TDK-Lambda PAQ50S48-1R2 User manual

PAQ
B-225
・All specifications are subject to change without notice.
PAQ SERIES
■ Product Line up
PAQ-S （Single Output）
■ Model naming method
This means that, in conformity with EU Directive 2002/95/
EC, lead, cadmium, mercury, hexavalent chromium, and
specic bromine-based ame retardants, PBB and PBDE,
have not been used, except for exempted applications.
■ Conformity to RoHS Directive
Output Voltage 50W 100W
Output Current Model Output Current Model
1.2V
12A
PAQ50S48-1R2
25A
PAQ100S48-1R2
1.8V PAQ50S48-1R8 PAQ100S48-1R8
2.5V PAQ50S48-2R5 PAQ100S48-2R5
3.3V PAQ50S48-3R3 PAQ100S48-3R3
5V 10A PAQ50S48-5 20A PAQ100S48-5
PAQ 100 S 48 − 5 / □
Option
Blank: ON/OFF control negative logic,
OVP manual reset
P: ON/OFF control positive logic, OVP
manual reset
V: ON/OFF control negative logic, OVP
automatic recovery
B: With baseplate (PAQ100S48-* only)
ON/OFF control negative logic, OVP
manual reset
* Sample option combination:
PAQ100S48-5/BPV: With baseplate,
ON/OFF control positive logic,
OVP automatic recovery
Nominal output voltage
Nominal intput voltage
D: Dual output
S: Simple function
Output power
Series name
PAQ65D （Dual Output）
■ Features
● 1/4 brick industry standard size (36.8×8.5×57.9
mm)
● Compact/slim/high power density: 90.1W/inch3
（PAQ100S48-5）
● High e󱐰ciency: 90% (5V output type)
● No use of heat sink
● Output voltage adjustable type
● Internal capacitor: Functional polymer electrlytic
(output smoothing), ceramic
Y
E
A
R
S
warranty
2
Output Voltage 65W
Output Current / Model Output Current / Model Output Current / Model Output Current / Model
1.8V 17A
PAQ65
D48-2518
17A
PAQ65
D48-3318
－
PAQ65
D48-3325
－
PAQ65
D48-5033
2.5V 15A － 17A －
3.3V － 15A 15A 16A
5V － － － 13A
■ Applications
DC/DC 1/8 Brick 50-100W
web191203

PAQ
B-226
・All specifications are subject to change without notice.
PAQ50S48 PAQ50S48-* Specifications
PAQ50S48
(*1) At 48VDC, maximum output current, air velocity = 2m/s and Ta = +25℃.
(*2) 36 - 76VDC, constant load.
(*3) No load - full load, constant input voltage.
(*4) Constant current limiting. (The unit automatically shutdown when left in OCP condition
with the output voltage less than the LVP level.) Auto restart option available.
(*5) Inverter shutdown method, manual reset. Auto restart option available.
(*6) Refer to Instruction manual.
(*7) Refer to derating curve and instruction manual.
(*8) External components are needed for operation. (Refer to basic connection and Instruction manual.)
ITEMS/UNITS MODEL PAQ50S48-1R2 PAQ50S48-1R8 PAQ50S48-2R5 PAQ50S48-3R3 PAQ50S48-5
Input Voltage Range V DC36 - 76 Efficiency (typ) (*1) ％78 83 85 88 90
Current (typ) (*1) A 0.39 0.56 0.75 0.96 1.18
Output
Nominal Voltage VDC 1.2 1.8 2.5 3.3 5
Maximum Current A 12 10
Maximum Power W 14.4 21.6 30 39.6 50
Voltage Setting Accuracy (*1) ％ ±1
Maximum Line Regulation (*2) mV 10
Maximum Load Regulation (*3) mV 10
Temperature Coefficient Less than 0.02%/℃
Maximum Ripple & Noise (*8)
mVp-p 100
Voltage Adjustable Range (*8) -20%, +10% ±15%
Function
Over Current Protection (*4) 105% - 150% (Option availavle : Refer to option table)
Over Voltage Protection (*5) 120% - 140% (Option availavle : Refer to option table)
Remote Sensing (*6) Possible
Remote ON/OFF Control Possible (Option availavle : Refer to option table)
Parallel Operation (*6) -
Series Operation (*6) Possible
Environment
Operating Temperature (*7) ℃Ta= -40 to +85
Storage Temperature ℃-40 to +100
Operating Humidity ％RH 5 - 95 (No dewdrop)
Storage Humidity ％RH 5 - 95 (No dewdrop)
Vibration At no operating, 10-55Hz (sweep for 1min.)
Amplitude 0.825mm constant (maximum 49.0m/s²) X, Y, Z 1 hour each
Shock 196.1m/s²
Cooling (*7) Convection cooled / Forced air cooled
Isolation Withstand Voltage Input-Output : 1.5kVDC for 1min
Isolation Resistance More than 100MΩat 25℃and 70%RH Input-Output...500VDC
Standards Safety Standards Approved by UL60950-1, CSA 22.2 No.60950-1, EN60950-1
Mechanical
Weight (typ) g 50
Size (W x H x D) mm 36.8 x 8.5 x 57.9 (Refer to outline drawing)
■ Basic Connection ■ Option Table
Option OVP, OCP Remote ON/OFF control
Standard
Shut down
(ON/OFF control reset or
manual reset) Negative
(Short : ON,
Open : OFF)
/V Auto restart
/P
Shut down
(ON/OFF control reset or
manual reset) Positive
(Short : OFF,
Open : ON)
/PV Auto restart
(*1) Use an external fuse (fast blow type) for each unit.
(*2) Put output capacitors.
C1: 1µF ceramic capacitor.
C2: 10µF tantalum capacitor or electrolytic capacitor.
(*3) Refer to instruction manual for further details.
MeasurementpointforVin
Measurementpointfor
Vo,Load/Lineregulation
Measurementpointfor
outputripple&noise
(JEITARC-9141probe)
Bandwidthofscope：100MHz
LOAD
FUSE5A
(*1)
Vin
36-76VDC
+Vin
CNT
-Vin
+S
+V
TRM
-S
-V
L=50mm
Cl 1uF
C2 10uF
+
-
(*2)

PAQ
B-227
・All specifications are subject to change without notice.
Outline Drawing
Derating Curve
57.9±0.5
50.8±0.25
36.8±0.5
4.1min
15.24±0.25
8.5max
15.24±0.25
7.62±0.25
NAME
NOTEA
2-φ1.5
NOTEB
NAME
PLATE 6−φ1.0
NOTEC
TOPVIEW
OPTIONCODE
NOTED
BOTTOMVIEW
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
AirVelocity
Naturalconvectioncooling
1m/s,2m/s
AmbientTemperature（℃）
Load（％）
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
1m/s,2m/s
AirVelocity
Naturalconvectioncooling
1m/s,2m/s
AmbientTemperature（℃）
Load（％）
(unit : mm)
PAQ50S48-1R2 PAQ50S48-1R8
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
1m/s,
2m/s
AirVelocity
Naturalconvectioncooling
AmbientTemperature（℃）
Load（％）
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
1m/s,
2m/s
AirVelocity
Naturalconvectioncooling
AmbientTemperature（℃）
Load（％）
PAQ50S48-2R5 PAQ50S48-3R3
PAQ50S48
=NOTES=
A: Model name, country of manufacture, Lot
No. and safety marking (TUV, C-UL-US &
CE marking) are shown here in accordance
with the specifications.
B: Output pin of +V and -V : 2- Φ1.5
C: Signal and Input pin : 6- Φ1
D: OPTION
OPTION CODE OVP/OCP REMOTE ON/OFF CONTROL
NOTHING (STANDARD)
SHUT DOWN
(ON/OFF CONT. RESET OR MANUAL RESET)
NEGATIVE
(SHORT: ON
OPEN: OFF)
/V AUTO RESTART
/P
SHUT DOWN
(ON/OFF CONT. RESET OR MANUAL RESET)
POSITIVE
(SHORT : OFF
OPEN : ON)
/PV AUTO RESTART
Vin=48Vdc
AIRFLOW DIRECTION FOR STANDARD
VERTICAL MOUNTING
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
1m/s,
2m/s
AirVelocity
Naturalconvectioncooling
AmbientTemperature（℃）
Load（％）
PAQ50S48-5
Topview
Airflow
Input
Output
NOTES
*For other mounting methods, airflow directions
and conditions, refer to Instruction manual.

PAQ
B-228
・All specifications are subject to change without notice.
PAQ100S48 PAQ100S48-* Specifications
PAQ100S48
■ Option Table
■ Basic Connection
MeasurementpointforVin
Measurementpointfor
Vo,Load/Lineregulation
Measurementpointfor
outputripple&noise
(JEITARC-9141probe)
Bandwidthofscope:100MHz
LOAD
FUSE6.3A
(*1)
Vin
36-76VDC
+Vin
CNT
-Vin
+S
+V
TRM
-S
-V
L=50mm
Cl 1uF
(*2)
C210uF
+
-
(*1) At 48VDC, maximum output current, air velocity = 2m/s and Ta = +25℃.
(*2) 36 - 76VDC, constant load.
(*3) No load - full load, constant input voltage.
(*4) Constant current limiting. (The unit automatically shutdown when left in OCP condition
with the output voltage less than the LVP level.) Auto restart option available.
(*5) Inverter shutdown method, manual reset. Auto restart option available.
(*6) Refer to Instruction manual.
(*7) Refer to derating curve and Instruction manual.
(*8) External components are needed for operation. (Refer to basic connection and Instruction manual.)
ITEMS/UNITS MODEL
PAQ100S48-1R2 PAQ100S48-1R8 PAQ100S48-2R5 PAQ100S48-3R3 PAQ100S48-5
Input Voltage Range V DC36 - 76 Efficiency (typ) (*1) ％80 84 86 89 90
Current (typ) (*1) A 0.8 1.14 1.55 1.98 2.37
Output
Nominal Voltage VDC 1.2 1.8 2.5 3.3 5
Maximum Current A 25 20
Maximum Power W 30 45 62.5 82.5 100
Voltage Setting Accuracy (*1) % ±1
Maximum Line Regulation (*2) mV 10
Maximum Load Regulation (*3) mV 10
Temperature Coefficient Less than 0.02%/℃
Maximum Ripple & Noise (*8)
mVp-p 100
Voltage Adjustable Range (*8) -20%, +10% ±15%
Function
Over Current Protection (*4) 105% - 140% (Option availavle : Refer to option table)
Over Voltage Protection (*5) 120% - 140% (Option availavle : Refer to option table)
Remote Sensing (*6) Possible
Remote ON/OFF Control Possible (Option availavle : Refer to option table)
Parallel Operation (*6) -
Series Operation (*6) Possible
Environment
Operating Temperature (*7) ℃Ta= -40 to +85
Storage Temperature ℃-40 to +100
Operating Humidity ％RH 5 - 95 (No dewdrop)
Storage Humidity ％RH 5 - 95 (No dewdrop)
Vibration At no operating, 10-55Hz (sweep for 1min.)
Amplitude 0.825mm constant (maximum 49.0m/s²) X, Y, Z 1 hour each
Shock 196.1m/s²
Cooling (*7) Convection cooled / Forced air cooled
Isolation Withstand Voltage Input-Output : 1.5kVDC for 1min
Isolation Resistance More than 100MΩat 25℃and 70%RH Input-Output...500VDC
Standards Safety Standards Approved by UL60950-1, CSA 22.2 No.60950-1, EN60950-1
Mechanical
Weight (typ) g 50
Size (W x H x D) mm 36.8×8.5×57.9 (Refer to outline drawing)
Option OVP, OCP Remote ON/OFF control
Standard
Shut down
(ON/OFF control reset or
manual reset) Negative
(Short : ON,
Open : OFF)
/V Auto restart
/P
Shut down
(ON/OFF control reset or
manual reset)
Positive
(Short : OFF,
Open : ON)
/PV Auto restart
(*1) Use an external fuse (fast blow type) for each unit.
(*2) Put output capacitors.
C1: 1µF ceramic capacitor.
C2: 10µF tantalum capacitor or electrolytic capacitor.
(*3) Refer to instruction manual for further details.

PAQ
B-229
・All specifications are subject to change without notice.
Outline Drawing
Derating Curve
OPTIONCODE
NAME
2-Φ1.5

NOTEB
6-Φ1.0
NOTEC
NOTED
NOTEA
TOPVIEW
BOTTOMVIEW
NAME
PLATE
Airvelocity
Ambienttemperature（℃）
Naturalconvectioncooling
Load（%）
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
1m/s,
2m/s
Ambienttemperature（℃）
Load（%）
Vin =48VDC
PAQ100S48-1R2 PAQ100S48-1R8
Ambienttemperature（℃）
Load（%）
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
1m/s,
2m/s
Load（%）
Ambienttemperature（℃）
Airvelocity
Naturalconvectioncooling
PAQ100S48-2R5 PAQ100S48-3R3
PAQ100S48
(unit : mm)
=NOTES=
A: Model name, country of manufacture, Lot
No. and safety marking (TUV, C-UL-US
& CE marking) are shown here in accor-
dance with the specifications.
B: Output pin of +V and -V : 2- Φ1.5
C: Signal and Input pin : 6- Φ1
D: OPTION
OPTION CODE OVP/OCP REMOTE ON/OFF CONTROL
NOTHING (STANDARD)
SHUT DOWN
(ON/OFF CONT. RESET OR MANUAL RESET)
NEGATIVE
(SHORT : ON
OPEN : OFF)
/V AUTO RESTART
/P
SHUT DOWN
(ON/OFF CONT. RESET OR MANUAL RESET)
POSITIVE
(SHORT : OFF
OPEN : ON)
/PV AUTO RESTART
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
1m/s,
2m/s
Load（%）
Ambienttemperature（℃）
Airvelocity
Naturalconvectioncooling
PAQ100S48-5
AIRFLOW DIRECTION FOR STANDARD
VERTICAL MOUNTING
Topview
Airflow
Input
Output
NOTES
*For other mounting methods, airflow direc-
tions and conditions, refer to Instruction
manual.

PAQ
B-230
・All specifications are subject to change without notice.
(*1) At 48VDC, maximum output current, baseplate temperature = +25℃.
(*2) 36 - 76VDC, constant load.
(*3) No load - full load, constant input voltage.
(*4) Constant current limiting. (The unit automatically shutdown when left in OCP condition with the output voltage less than the LVP level.) Auto restart
option available.
(*5) Inverter shutdown method, manual reset. Auto restart option available.
(*6) Refer to Instruction manual.
(*7) Refer to derating curve on the Right and Instruction manual.
(*8) External components are needed for operation. (Refer to basic connection and Instruction manual.)
■ Basic Connection
MeasurementpointforVin
Measurementpointfor
Vo,Load/Lineregulation
Measurementpointfor
outputripple&noise
(JEITARC-9141probe)
Bandwidthofscope：100MHz
LOAD
FUSE6.3A
(*1)
Vin
36-76VDC
+Vin
CNT
-Vin
+S
+V
TRM
-S
-V
L=50mm
Cl 1uF
(*2)
C2 10uF
+
-
Baseplate
■ Option Table
PAQ100S48-*/B
PAQ100S48-*/B Specifications
ITEMS/UNITS MODEL
PAQ100S48-1R2/B PAQ100S48-1R8/B PAQ100S48-2R5/B PAQ100S48-3R3/B PAQ100S48-5/B
Input Voltage Range V DC36 - 76 Efficiency (typ) (*1) ％80 84 86 89 90
Current (typ) (*1) A 0.8 1.14 1.55 1.98 2.37
Output
Nominal Voltage VDC 1.2 1.8 2.5 3.3 5
Maximum Current A 25 20
Maximum Power W 30 45 62.5 82.5 100
Voltage Setting Accuracy (*1) ％ ±1
Maximum Line Regulation (*2) mV 10
Maximum Load Regulation (*3) mV 10
Temperature Coefficient Less than 0.02%/℃
Maximum Ripple & Noise (*8)
mVp-p 100
Voltage Adjustable Range (*8) -20%, +10% ±15%
Function
Over Current Protection (*4) 105% - 140% (Option availavle : Refer to option table)
Over Voltage Protection (*5) 120% - 140% (Option availavle : Refer to option table)
Remote Sensing (*6) Possible
Remote ON/OFF Control Possible (Option availavle : Refer to option table)
Parallel Operation (*6) -
Series Operation (*6) Possible
Environment
Operating Temperature (*7) ℃Baseplate : -40 to +100 / MIN ambient temperature : -40
Storage Temperature ℃-40 to +100
Operating Humidity ％RH 5 - 95 (No dewdrop)
Storage Humidity ％RH 5 - 95 (No dewdrop)
Vibration At no operating, 10-55Hz (sweep for 1min.)
Amplitude 0.825mm constant (maximum 49.0m/s²) X, Y, Z 1 hour each
Shock 196.1m/s²
Cooling (*7) Conduction cooled / Forced air cooled
Isolation Withstand Voltage Input-Baseplate : 1.5kVDC, Input-Output : 1.5kVDC for 1min
Output-Baseplate : 500VDC for 1min
Isolation Resistance More than 100MΩat 25℃and 70%RH Output-Baseplate...500VDC
Standards Safety Standards Approved by UL60950-1, CSA 22.2 No.60950-1, EN60950-1
Mechanical
Weight (typ) g 75
Size (W x H x D) mm 36.8 x 12.7 x 57.9 (Refer to outline drawing)
(*1) Use an external fuse (fast blow type) for each unit.
(*2) Put output capacitors.
C1: 1µF ceramic capacitor.
C2: 10µF tantalum capacitor or electrolytic capacitor.
(*3) Refer to instruction manual for further details.
Option OVP, OCP Remote ON/OFF control
/B
Shut down
(ON/OFF control reset or
manual reset) Negative
(Short : ON,
Open : OFF)
/BV Auto restart
/BP
Shut down
(ON/OFF control reset or
manual reset) Positive
(Short : OFF,
Open : ON)
/BPV Auto restart

PAQ
B-231
・All specifications are subject to change without notice.
Outline Drawing
Derating Curve
57.9±0.5
47.2±0.5
TOPVIEW
BOTTOMVIEW
50.8±0.25
36.8±0.5
12.7±0.5 26.16±0.25
4.1min
15.24±0.25
15.24±0.25
7.62±0.25
OPTIONCODE
NOTED
2-M3X0.5THROUGH
NAME
NOTEA
2-Φ1.5
NOTEB
NAME
PLATE
6-Φ1.0NOTEC
NOTEE
(unit : mm)
= NOTE =
A: Model name, country of manufacture, Lot No. and safety marking (TUV, C-UL-
US & CE marking) are shown here in accordance with the specifications.
B: Output pin of +V and -V : 2-Φ1.5
C: Signal and Input pin : 6-Φ1.0
D: OPTION CODE
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
2R5,3R3,5model
1R2,1R8model
BaseplateTemperature(℃)
Load(%)
Baseplate
temperature
measuringpoint
There is no restriction on mountintg direction but there should be enough
consideration for airflow so that heat does not accumulate around the power
module vicinity. Determine external components configuration and mounting
direction on PCB such that air could flow through power module at forced air
cooling or convection cooling.
By maintaining baseplate temperature below 100℃, operation is possible. Ac-
cording to the models, output derating is needed.
Measure baseplate temperature at center of baseplate.
For better improvement of power module reliability, more derating of baseplate
temperature when using is recommended.
PAQ100S48-*/B
CODE OVP/OCP REMOTE ON/OFF CONTROL
/B SHUT DOWN
(
ON/OFF CONT. RESET
OR MANUAL RESET
)
NEGATIVE
(
SHORT : ON
OPEN : OFF
)
/BV AUTO RESTART
/BP SHUT DOWN
(
ON/OFF CONT. RESET
OR MANUAL RESET
)
POSITIVE
(
SHORT : OFF
OPEN : ON
)
/BPV AUTO RESTART
E: M3X0.5 tapped holes 2 for customer chassis mounting (FG).

PAQ
B-232
・All specifications are subject to change without notice.
Example :
PAQ65D48-3325/PV; Represent positive logic, OVP/OCP Auto-restart
 MODEL
ITEMS/UNITS CH
PAQ65D48-2518 PAQ65D48-3318 PAQ65D48-3325 PAQ65D48-5033
12121212
Input Voltage Range V 36 - 76 VDC Efficiency (Typ) (*2) ％86.0 87.0 90.0
Current (Typ) (*2) A 0.82 0.97 1.10 1.36
Output
Nominal Voltage VDC 2.5 1.8 3.3 1.8 3.3 2.5 5 3.3
Minimum Current A 0
Maximum Current A 15 17 15 17 15 17 13 16
Maximum Current Combination A Io1+Io2 = 18A
Total Allowable Power (*1) W Po1+Po2 = 37.5 Po1+Po2 = 49.5 Po1+Po2 = 65
Voltage Setting Accuracy (*2) ％ ± 2
Maximum Line Regulation (*5) mV ±6.6 ±10 ±6.6
Maximum Load Regulation (*6) mV ±16.5 ±25 ±16.5
Temperature Coefficient 0.02%/℃
Maximum Ripple & Noise (*4)
mVp-p 75 100 75 100 75 100
Voltage Adjustable Range (*3) ±10%
Function
Over Current Protection
(Io1+Io2) (*7)(*8)(*10) 105 ～160% Current limiting with inverter shutdown (Option available : Refer to option table)
Over Voltage Protection (*7)(*8) 120 ～140%
Inverter shutdown (Option available : Refer to option table)
Remote ON/OFF Control (*8) Negative logic (Option available : Refer to option table)
Parallel Operation ------------
Series Operation ------------
Environment
Operating Temperature ℃-40 to +85
Storage Temperature ℃-40 to +100
Operating Humidity ％RH 5 ~ 95 (No dewdrop)
Storage Humidity ％RH 5 ~ 95 (No dewdrop)
Vibration At no operating, 10 - 55Hz (sweep for 1 min.)
Amplitude 0.825mm constant (maximum 49.0 m/s²) X,Y,Z 1 hour each
Shock 196.1 m/s² (In package)
Cooling (*8)(*9) Convection cooling / forced air cooling with derating
Isolation Withstand Voltage Input - Output : 1.5kVDC for 1 min.
Isolation Resistance More than 100Mohm at 25℃and 70 %RH, Input - Output : 500 VDC
Standards Safety Standards Approved by UL60950-1, CSA 22.2 No.60950-1, EN60950
Mechanical
Weight (Typ) g 40
Size (W x H x D) mm 36.8 x 8.9 x 57.9 ( Refer to outline drawing)
PAQ65D48 PAQ65D48 Specifications
■ Basic Connection ■ Option Table
PAQ65D
(*1) Use external fuse (fast blow type) for each unit.
(*2) Recommended input capacitor C1
-20℃to +85℃: 33µF electrolytic type capacitor.
-40℃to +85℃: 33µF ceramic capacitor or equivalent such
as 5 parallel 6.8µF ceramic type capacitor.
(*3) 22µF ceramic capacitor
Option : ON/OFF Logic OVP/OCP
Standard Negative Shut-down
/P Positive Shut-down
/V Negative
Auto-restart
/PV Positive Auto-restart
(*1) Maximum allowable combination output power for both channel; also maximum output current for each channel and combination output current for
both channel should not exceeded.
(*2) At 48 VDC, ambient temperature = +25℃and air velocity = 2m/S; 5033: Io1 = Io2 = 7.5A; 3325, 3318, 2518: Io1 = Io2 = 8.5A.
(*3) Additional external components have to be connected; Both outputs are trim independantly; Refer to application notes.
(*4) Measured at Ta = 25℃, Vin = 48VDC and with external components connected;
refer to basical connection drawing. For all temperature range, please refer to the application notes.
(*5) 36 ~ 76 VDC with respect to nominal input line 48V; constant load; ambient temperature = +25℃.
(*6) No load ~ full load with respect to 50% of maximun load; other output: no load; constant input voltage; ambient temperature =+25℃.
(*7) CNT reset or manual reset. Auto-restart option available.
(*8) Refer to application notes.
(*9) Refer to output derating curve.
(*10) Percentage is with respect to maximum combination current which is 18A.
Option for “/C”
(/C, /CP, /CV, /CPV)
Each output voltage can be varied
simultaneously and by the same
proportion by one trimmer.
MeasurementpointforVin
+Vin
Fuse 5A (*1)
C1
（*2）
+
Vin
36〜76VDC
CNT
-Vin
Vo2
Trim2
Gnd
Trim1
Vo1
L=50mm
C3 22uF(*3)
C222uF(*3) +
-
-
+Load
Load
MeasurementpointforVo,
line&loadregulation
Measurementpointforoutputripple&noise
Bandwidthforscope:20MHz

PAQ
B-233
・All specifications are subject to change without notice.
Outline Drawing
OPTIONCODE
NOTEC
TOPVIEW
BOTTOMVIEW
−
＋
10.2max 1.3min
CLEARANCE
−
7
6.36±0.25
19.08±0.25
−
＋
NAME
NOTEA
NAME
NOTEB
＝NOTE＝
A: MODEL NAME, COUNTRY OF MANUFACTURE, LOT NO.
AND SAFETY MARKING (BSI, C-UL-US & CE MARKING)
ARE SHOWN HERE IN ACCORDANCE WITH THE
SPECIFICATIONS.
B: INPUTAND OUTPUT TERMINAL : 8-Φ1.0
C: OPTION
OPTIONCODE
NOTEC
NOTEB
＋
−
＋
−
NAME
NOTEA
TOPVIEW
BOTTOMVIEW
NAME
＝NOTE＝
A: MODEL NAME, COUNTRY OF MANUFACTURE, LOT NO.
AND SAFETY MARKING (BSI, C-UL-US & CE MARKING)
ARE SHOWN HERE IN ACCORDANCE WITH THE
SPECIFICATIONS.
B: INPUTAND OUTPUT TERMINAL : 8-Φ1.0
C: OPTION
−
8
● Standard, /P, /V, /PV
● /C, /CP, /CV, /CPV
(unit : mm)
(unit : mm)
PAQ65D
OPTION ON/OFF LOGIC OVC/OCP
STANDARD NEGATIVE(H:OFF/L:ON) SHUT DOWN
(ON/OFF CONTROL RESET OR MANUAL RESET)
/P POSITIVE(H:OFF/L:ON)
/V NEGATIVE(H:OFF/L:ON) AUTO RESTART
/PV POSITIVE(H:OFF/L:ON)
OPTION ON/OFF LOGIC OVC/OCP
/C
NEGATIVE (H:OFF / L:ON)
SHUT DOWN
(ON/OFF CONTROL RESET OR MANUAL RESET)
/CP POSITIVE (H:OFF / L:ON)
/CV NEGATIVE (H:OFF / L:ON)
AUTO RESTART
/CPV
POSITIVE (H:OFF / L:ON)

PAQ
B-234
・All specifications are subject to change without notice.
PAQ65D
Output Derating
120
100
80
60
40
20
00 20 40 60 80 100 120
125
140
TotalPower(%)
Q15Temperature(℃)
INPUT
OUTPUT
TOPVIEW
MOSFETQ15
● Output derating curve with respect to Q15
When using with different measuring conditions from those of output derating by ambient tem-
perature, use output derating to keep temperature of MOSFET Q15 below 125℃.
Q15 temperature is decided by temperature of thermal sensor in the center of PCB. When the
module operates over the output derating curve of PCB temperature, over thermal protection
(OTP) functions and output shutdown.
● Output derating by ambient temperature
Please refer to Instruction Manual.

PAQ-S, 100S48-*/B
PAQ
B-235
・All specifications are subject to change without notice.
Block Diagram
（For standard model with latch type OVP and OCP, ON/OFF control in negative logic）
＋Vin
−Vin
/Voption
＋V
−V
＋S
−S
TRM
SwitchingFrequency(fixed)：330kHz
CNT
InputFilter
Switching
Synchronous Rectifier
Filter
BiasPower Supply
ControlCircuit
ShutDown
Thermal Protection
ON/OFFControl
AutoRestart
OCP
OVP
LVP
Voltage
Sensing
Sequence Time Chart
InputVoltage
OutputVoltage
*1
*1 level：4≦H≦35(V)orOpen
0≦L≦0.8(V)orShort
Vin
0
Vo
0
H
L
RESETMore
than1ms
OCPSetPoint
OVPSetPoint
ON/OFF
Control
INPUTON INPUTON
OTPON
OTPOFF
INPUTOFF
LVPTrip
ControlOFF
ControlON
ControlOFF
ControlOFF
ControlON
ControlON
OVPTrip
OCPON

PAQ65D
PAQ
B-236
・All specifications are subject to change without notice.
Block Diagram
(For standard model with latch type OVP and OCP)
＋Vin
−Vin
/Voption
＋Vo1
GND
TRM1
Switchingfrequency(fixed)：330kHz
CNT
Inputfilter
Inputfilter
Switching
Synchronous Rectifier
Synchronous Rectifier
OutputFilter
OutputFilter
BiasPower
supply
Controlcircuit
Shutdown
Thermal Protection
Autorestart
OCP
Voltage
Sensing
Electronic
Mag-AmpControl
OVP
OVP
LVP
VoltageSensing
＋Vo2
TRM2
Inputvoltage
Outputvoltage
*1
*1 Level：H≧2(V)orOpen
0≦L＜0.8(V)orShort
Vin
0
Vo1, Vo2
0
H
L
RESET
Morethan400ms
OCPSetPoint
OVP SetPoint
ON/OFF
Control
InputON
ControlOFF
ControlON ControlON ControlON
OVPTrip
OCPTrip
LVPTrip
ControlOFF ControlOFF
InputOFF
InputON
OTPON
OTPOFF
● Standard model, /P, /V, /PV option models
● /C, /CP, /CV, /CPV option models
Sequence Time Chart
＋Vin
−Vin
/Voption
＋Vo1
GND
TRM1
Switchingfrequency(fixed)：330kHz
CNT
Inputfilter
Inputfilter
Switching
Synchronous Rectifier
Synchronous Rectifier
OutputFilter
OutputFilter
BiasPower
supply
Controlcircuit
Shutdown
Thermal Protection
Autorestart
OCP
Voltage
Sensing
Electronic
Mag-AmpControl
OVP
OVP
LVP
VoltageSensing
＋Vo2
TRM2

PAQ-S48
PAQ
B-237
・All specifications are subject to change without notice.
PAQ-S48 Instruction Manual
1. Terminal Explanation
Be sure to take note of precautions and warnings indicated in
this manual when using this product. Improper usage may lead
to electric shock or re. Be sure to read this instruction manual
thoroughly before using this product.
Caution
● There are high voltage and high temperature components
within this product. Refrain from disassembling this product or
touching its internal components as this may lead to electric
shock or burned.
● When the unit is operating, keep your hands and face away
from the unit. You may get injured by accident.
● Conrm connections to input/output terminals and signal ter-
minals are correct as indicated in the instruction manual.
● Attach a fast blow type external fuse to each module to en-
sure safety operation and compliance to each safety standard
approval.
● This power module is designed for professional installation
within the end user equipment.
● Use isolated voltage by reinforced or double insulation as in-
put power source.
● Do not inject abnormal voltage to output terminal and signal
terminal from the outside.
The injection of reverse voltage or over voltage exceeding
nominal output voltage to output terminals might cause dam-
age to internal output capacitor (Functional Polymerized Ca-
pacitor)
● The application circuits and their parameter are for reference
only. Be sure to verify effectiveness of application circuits
and their parameters before nalizing circuit design.
● The information in this document is subject to change with-
out prior notice. For actual design-in, please refer to the lat-
est publications of data sheet, etc., for the most up-to date
specications of the unit.
● No part of this document may be copied or reproduced in any
for, or by any mean without prior written consent of Densei-
Lambda.
Note：CE Marking
CE Marking, when applied to a product covered by instruction
manual, indicates compliance with the low voltage directive
which complies with EN60950
Before Using This Power Module
[Input terminal]
-Vin: -Input Termminal
CNT: ON/OFF Control Terminal
+Vin: +Input Terminal
[Output terminal]
-V: -Output Terminal
-S: -Remote Sensing Terminal
TRM: Output Voltage Trimming Terminal
+V: +Remote Sensing Terminal
+S: +Output Terminal
＋V
＋S
TRM
−S
−V
＋Vin
−Vin
CNT
BottomView
Input and Outoput Terminal Configurations (Bottom View)
● PAQ100S48-*/B Instruction Manual B-246Page
● PAQ65D Instruction Manual B-250Page

PAQ-S48
PAQ
B-238
・All specifications are subject to change without notice.
1 Input Voltage Range
Input Voltage Range for PAQ-S48 Series is indicated
below.
Input Voltage Range: 36-76VDC
Basically, ripple voltage (Vrpl) which results from
rectication and ltering of commercial AC line is included
within the input voltage as shown in Fig.1-1. Ripple voltage
must be limited within the voltage described below.
Allowable input ripple voltage: 4Vp-p
When this value is exceeded, the output ripple voltage
becomes large.
Note that sudden input voltage change may cause variation
of output voltage transitionally.
Also, input voltage waveform peak value must not exceed
above input voltage range.
Time
InputVoltage
Vrpl
below4V
InputVoltage
Range
Fig.1-1 Input Ripple Voltage
TRM
CNT
Load
＋
−
-Vin
+Vin
+S
-S
-V
+V
Fuse
C3
C1 C2
50mm
+
+
Fig.1-2 Basic Connection
Input Fuse
PAQ-S48 Series module is not internally fused. To ensure
safe operation and to receive each Safety Standards
approval, please connect an external fuse (fast-blow type)
as shown in Fig.1-2.
Fuse must be connected to the +Vin side if –Vin side is
used as ground, or fuse must be connected to –Vin side if
+Vin side is used as a ground.
Recommended input fuse current rating:
PAQ100S48: 6.3A
PAQ50S48: 5A
C1: 1μF, C2: 10μF
To reduce spike noise voltage at the output, connect
1μF ceramic capacitor and 10μF electrolytic capacitor
or tantalum capacitor between +V and –V within 50mm
distance from the output terminals.
Also, take note that output spike noise voltage could vary
according to PCB wiring design.
Maximum capacitance that can be connected between +V
and –V, is total 10,000μF.
C3:
Input capacitor C3 is recommended to stabilize the module
when the module is powered from a high impedance
source.
Select the electrolytic capacitor with low ESR and
su󱐰cient allowable ripple current.
Verify actual ripple current value by actual measurement.
Recommended capacitor value: 33μF and above
（voltage rating 100V or above）
Note)
1. Use low impedance electrolytic capacitor
with excellent temperature characteristics.
(Nippon Chemicon LXV Series or equivalent)
2. When input line inductance becomes excessively
high due to insertion of choke coil operation of
the power module could become unstable. For
this case, increase C3 value more than the value
indicated above.
3. When ambient temperature becomes lower than
–20℃, connect two capacitors indicate above in
parallel.
C4：
When switches or connectors are used between input
source and PAQ-S48 Series input terminals, impulse surge
voltage is generated due to input throw-in by switch on/o󱐯
or due to inserting/removing of power module from the
active line. For this case, connect an additional electrolytic
capacitor C4 as shown in g.1-3 and g.1-4.
Recommended Capacitor: 33μF and above
（Voltage Rating 100V or above）
Also, in-rush current ows at line throw-in.
Therefore, be sure to verify capability of switch or fuse to
withstand I2t at line throw-in.
Fuse
−Vin
＋Vin
C3
+
C4
+
Switch
Fig.1-3 Input filter (C4) with Switch
Fuse
−Vin
＋Vin
C3
+
C4
+
Switch
Fuse
C3
+
−Vin
＋Vin
Fig.1-4 Input Filter with Switch when Plural Power
2. Explanation on Specifications

PAQ-S48
PAQ
B-239
・All specifications are subject to change without notice.
Reverse input connections
Reverse input polarity would cause module damage.
For cases where reverse connections are possible, con-
nect a protective diode and fuse. Use protective diode
with higher voltage rating than the input voltage, and with
higher surge current rating than the fuse.
−Vin
＋Vin
−V
＋V
Load
Fuse
Fig.1-5 Protection for Reversed Input Connection
2 Output Voltage Adjustment Range
Output voltage could be adjusted within the range de-
scribed below by external resister or variable resistor. How-
ever, take note that OVP might trigger when output voltage
adjustment exceeds the ranges indicated below.
Output Voltage Adjustment Range
3.3V, 5V: –15% to ＋15% of nominal output voltage
1.2V, 1.8V, 2.5V: –20% to ＋10% of nominal output voltage
When increasing the output voltage, reduce the output cur-
rent accordingly so as not to exceed the maximum output
power.
For 3.3V and 5V output models, take note that when out-
put voltage is increased, input voltage range is limited as
show in g.2-1.
Also, when output voltage is decreased under output ad-
justment range, output voltage will shut o󱐯.
Remote sensing is possible even when output voltage is
varied. For details on remote sensing function, please refer
to “9. Remote Sensing.”
55
36
35 40 45 50
110
100
90
120
InputVoltage(VDC)
3.3V,5V Model
1.2V,1.8V,2.5V Models
Outputvoltage(%)
Fig.2-1 Limit of Input Voltage
Output Voltage Adjustment by external resistor or
by variable resistor
（1）In case of adjusting output voltage lower
（1-1）Available maximum output current = rated output
current
（1-2） Connect an external resistor Radj (down) between
the TRM terminal and -S terminal.
Load
PAQ
Series
＋
−
Radj(down)
−S
−V
＋V
＋S
TRM
Fig.2-2 Connection for output voltage trim down
（1-3）Equation of external resistor and output voltage
Radj (down): Value of external resistor
Δ(%): Output voltage change rate against
nominal output voltage
1.2V model
Radj (down)=
〔
5.777×100（%）
−10.887
〕
［kΩ］
Δ（%）
1.8V, 2.5V, 3.3V, 5V model
Radj (down)=
〔
5.11×100（%） −10.22
〕
［kΩ］
Δ（%）
Below graph is relation Δ(%) and value of external resistor.
1
10
100
1000
0 10 20 30
ChangeinOutputVoltage（%)
Radj(down)(kΩ)
1.2V
Except1.2V
Fig.2-3 Δ(%) vs. Radj (down)
（2） In case of adjusting output voltage higher
（2-1） Allowable maximum output current = value of
output power÷output voltage (Reduce maximum
output current in specication.)
（2-2） Connect an external resistor Radj (up) between
TRM terminal and +S terminal
Load
PAQ
Series
＋
−
Radj(up)
−S
−V
＋V
＋S
TRM
Fig.2-4 Connection for output voltage trim up
（2-3） Equation of external resistor and output voltage
Vo : nominal output value of module
Radj (up) : external adjustment resistor
Δ(%) : Output voltage change rate against
nominal output voltage
1.2V model
Radj （up） =
〔
8.665×Vo（100（%）＋Δ（%）） − 5.777×100（%）−10.887
〕
[kΩ]
1.225×Δ（%） Δ（%）
1.8V, 2.5V, 3.3V, 5V model
Radj（up）=
〔
5.11×Vo（100（%）＋Δ（%）） − 5.11×100（%） −10.22
〕
[kΩ]
1.225×Δ（%）
Δ（%）

PAQ-S48
PAQ
B-240
・All specifications are subject to change without notice.
Below graph is relation Δ(%) and value of external resistor.
10
100
1000
10000
0 5 10 15
ChangeinOutputVoltage(%)
Radj (up) (kΩ)
1.2V
1.8V
2.5V
3.3V
5V
Fig.2-5 Δ(%) vs. Radj (up)
（3）To adjust output voltage for whole range
Resister values, as well as, connecting methods for
external resistor (R1) and external variable resistor (VR)
are described below.
Model 1.2V 1.8V 2.5V 3.3V 5V
R1 3.3k 2.2k 4.7k 10k 3.3k
VR 2k 2k 2k 2k 5k
Unit：［Ω］
Table 2-3
Values of External Resistor and Variable Resistor
〔 Vo -20% , +10% (1.2V, 1.8V, 2.5V) 〕
Vo ±15% (3.3V, 5V)
Model 1.2V 1.8V 2.5V 3.3V 5V
R1 36k 33k 18k 27k 18k
VR 500 500 1k 1k 2k
Unit：［Ω］
Table 2-4
Values of External Resistor and Variable Resistor
(±10% Variable)
R1：±5% Tolerance
VR：±20% Tolerance
with end resistance below 1%
+S
+V
-S
TRM
-V
Load
＋
−
VR
R1
+
Fig.2-6 Example connection of external resistor
3 Maximum Ripple and Noise
（1） Measurement based on JEITA RC-9141
Measure according to the specied methods (Fig.3-1)
based on JEITA RC-9141 (Clause 7.12 and 7.13)
which is described in the following. Connect ca-
pacitors (C1: ceramic capacitor 1μF, C2: electrolytic
capacitor 10μF) at 50mm distance from the output
terminals. Measure at ceramic capacitor (C2) leads
as shown in g.3-1 using coaxial cable with JEITA at-
tachment. Use oscilloscope with 100MHz frequency
bandwidth or equivalent.
−V
＋V
+
50mm
Load
Asshortaspossible
Coaxialcable
100MHz
Bandwidh
JEITA
Attachment
R:50Ω
C:4700pF
C2
C1
R
C
Oscilloscope
1.5m50Ω
Fig.3-1 Measurement of Maximum Output Ripple &
Noise Based on JEITA RC-9141
（2） Measurement using coaxial cable
Measure according to fig.3-2. Connect capacitors
(C1:ceramic capacitor 1μF, C2: electrolytic capacitor
10μF) at 50mm distance from the output terminals.
Measure at ceramic capacitor (C2) leads using coaxial
cable. Use oscilloscope with 20MHz frequency band-
width or equivalent.
−V
＋V
+
50mm
Load
Asshortaspossible
CoaxialCable
20MHz
bandwidth
C2
C1
Oscilloscope
1.5m50Ω
Fig.3-2 Measurement of Maximum Output Ripple &
Noise Using coaxial cable
Take note that output ripple voltage and output spike noise
may vary depending on PCB wiring design. Generally, out-
put ripple voltage and output spike noise can be reduced
by increasing value of external capacitor.
4 Maximum Line Regulation
Maximum line regulation is the maximum value of output
voltage change when input voltage is gradually varied with-
in specified input voltage range. The measurement point
for the input and output voltage are ±Vin and ±S (sense
point) respectively.
5 Maximum Load Regulation
Maximum value of output voltage change when output
current is gradually varied within specied output current
range. The measurement point for the input and output
voltage are ±Vin and ±S (sense point) respectly. When
using at dynamic load mode, audible noise may be heard
from the power module and output voltage fluctuation
might increase.
6 Over Current Protection (OCP)
This power module has built-in OCP function.
Output will recover when short circuit or overload condi-
tions are released. OCP setting value is xed and there-
fore, can not be externally adjusted. Also, take note, when
output voltage drops down below lower side of adjustment
range for 20ms-50ms by output short circuit or over load
conditions, output might be shut down.
Output can be recovered by manual reset of the control

PAQ-S48
PAQ
B-241
・All specifications are subject to change without notice.
ON/OFF terminal or by turning input line o󱐯 and then turn-
ing it on again .
7 Over Voltage Protection (OVP)
This power module has built-in OVP function.
OVP set point is relative to the rated output voltage value.
When output voltage exceed OVP set point, output voltage
shut down. OVP set point is fixed and therefore can not
be changed. When OVP is triggered, output can be recov-
ered by turning input line o󱐯 and then turning it on again
after lowering the input voltage below the voltage value
indicated below or by manual reset of the control ON/OFF
terminal.
Input voltage for OVP reset: 24VDC and below
/V Option (automatic recovery)
The /V optional model will re-start with delay of 200ms-
500ms after shutdown by OCP or OVP triggering. When
over voltage and over current are removed, output will re-
cover normally.
Verifying OVP function shall be done by increasing output
voltage with external resistor. For verifying OVP function,
avoid applying external voltage to output terminal because
this will cause power module damage.
8 Over Thermal Protection (OTP)
This power module has built-in OTP function. This function
operates and shuts down the output when temperature of
the power module rises abnormally. Take note that OTP
will operate again unless the cause of abnormal heat of
the power module is eliminated.
For the details of OTP, refer to the clause of “Mounting
Method and Thermal Condition”.
9 Remote Sensing (+S, -S Terminal)
Remote sensing terminal is provided to compensate for
voltage drop across the wirings from the power module
output terminal to the load input terminal. When remote
sensing function is not used (local sensing), short +S ter-
minal to +V terminal and, -S terminal to –V terminal.
Take note that voltage compensation range for line drop
(voltage drop due to wiring) should be kept such that out-
put voltage at the output terminals is within output volt-
age range and the maximum power is not exceeded. Use
shielded wire, twist pair, or parallel pattern to reduce noise
e󱐯ect.
Load
Stabillizetheoutputvolftageatload
+
Twised
Mustbeasthickaspossible
−V
−S
＋V
−
＋
＋S
+
Fig.9-1 Remote Sensing in Use
Stabillizetheoutputvoltageatoutputload
Load
+
−V
−S
＋V
−
＋
＋S
Fig.9-2 Remote Sensing Not in Use（Local Sensing）
Load
- Vpattern
Overlaponbothsidespattern
+Vpattern
−V
＋V
−
＋
Fig.9-3 Load pattern layout example （by）using double side PCB
󱫒 ON/OFF Control (CNT Terminal)
Without turning the input supply on and o󱐯, the output can
be enabled and disabled using this function. This function
also can be used for output sequence of plural modules
ON/OFF control circuit is on the primary side (the input
side), CNT Terminal pin. For secondary control, isolation
can be achieved through the use of a opto coupler or relay.
CNT Terminal Level to -Vin Terminal Output Status
H Level (4V≦H≦35V) or Open OFF
L Level (0V≦L≦0.8V) or Short ON
＊When control function is not used, CNT terminal is shorted
to –Vin terminal.
＊When using long wiring, for prevention of noise, attach a
0.1μF capacitor between CNT Terminal and –Vin terminal.
＊At L level, maximum source current from CNT Terminal to
–Vin terminal is 0.5mA.
＊The maximum CNT Terminal voltage when it is opened is
35V.
（1）Output ON/OFF control
PAQ
Series
Transistor,Relay
orEquivalent
＋Vin
CNT
−Vin
（2）Secondary (output side) control
PAQ
Series
Secondary
(outputside)
＋Vin
CNT
−Vin
Fig.10-1 CNT connection
󱫓 Parallel Operation
Parallel Operation can not be used.

PAQ-S48
PAQ
B-242
・All specifications are subject to change without notice.
󱫔 Series Operation
Series operation is possible for PAQ-48 series.
Connections shown in g.12-1 and g.12-2 is possible.
Load
＋
−
+
−S
−V
＋V
＋S
−S
−V
＋V
＋S
+
Fig.12-1 Series Operation for High Output
Voltage Application
Load
＋
−
Load
＋
−
+
−S
−V
＋V
＋S
−S
−V
＋V
＋S
+
Fig.12-2 ±Output Series Operation
󱫕 Operating Ambient Temperature
According to ambient temperature, output load should de-
rated accordingly (refer to Mounting Method & Terminal
Condition). There is no restriction on mounting direction
but there should be enough consideration for airflow so
that heat does not accumulate around the power module
vicinity. Determine external components conguration and
mounting direction on PCB such that air could ow through
power module at forced air cooling or convection cooling.
For better reliability, derating of ambient temperature is
recommended. For details on deraing, refer to “Mounting
Method & Thermal Condition”
󱫖 Operating Ambient Humidity
Take note that moisture could lead to power module abnor-
mal operation or damage.
󱫗 Storage Ambient Temperature
Abrupt temperature change would cause condensation
built-up that leads to poor solderability of terminals of the
power module.
󱫘 Storage Ambient Humidity
High temperature and humidity can cause the terminals
on the module to oxidize. The quality of the solder will be-
come worse.
󱫙 Cooling Method
Forced air cooling is recommended. Convection cooling is
also possible. For the details of derating, refer to “Mounting
Method and Thermal Condition”
󱫚 Ambient Temperature vs. Output Voltage Drift
Temperature coefficient is defined as the rate of voltage
change when ambient temperature is changed during op-
eration.
󱫛 Withstand Voltage
This power module is designed to have a withstand voltage
of 1.5kVDC between input and output. When conducting
withstand voltage test during incoming inspection, be sure
to apply DC voltage. Also, set the current limit value of the
withstand voltage testing equipment to 10mA. Be sure to
avoid conducting test with AC voltage because this would
cause power module damage. Furthermore, avoid throw in
or shut o󱐯 of the testing equipment when applying or when
shutting down the test voltage. Instead, gradually increase
or decrease the applied voltage. Take note especially not
to use the timer of the test equipment because when the
timer switches the applied voltage off, impulse voltage
which has several times the magnitude of the applied volt-
age is generated causing damage to the power module.
Short the output side as shown in the diagram below.
＋V
−V
＋S
−S
TRM
＋Vin
−Vin
CNT
Withstand
Voltagetester
1.5kVDC 1minute (10mA)
Fig.19-1 Withstand Voltage Test for Input-Output
󱫜 Insulation Resistance
Use DC insulation tester (MAX 500V) between output and
input. Insulation resistance value is
100MΩ and above at 500VDC applied voltage. Make
sure that during testing, the isolation testers does not
produce a high pulse when the applied voltage is varied.
Ensure that the tester is fully discharged after the test.
＋V
−V
＋S
−S
TRM
＋Vin
−Vin
CNT
Isolation
Tester
Fig.20-1 Isolation test
󱫝 Vibration
Vibration of power module is dened in case of mounting
on PCB.
󱫞 Shock
Value for the conditions of out shipping and packaging.

PAQ-S48
PAQ
B-243
・All specifications are subject to change without notice.
3. Mounting Method and Thermal Condition
1Outputderating
There is no restriction on mounting direction but there
should be enough consideration for airflow so that heat
does not accumulate around the power module vicinity.
Determine external components conguration and mount-
ing direction on PCB such that air could flow through
power module at forced air cooling or convection cooling.
Take note, output power derating is needed as shown in
followings. (Refer to output derating by ambient tempera-
ture).
The derating curves provided is based on the below set-up
condition. For actual application with di󱐰culty of air ow
measurement, nd of PCB temperature is recommended to
ensure the power module operates within derating curve.
(Refer to Output derating by PCB temperature)
C
L
Airflow Airflow
Input
Output
25.4mm
PCB PCB
12.7mm
76mm
Power
Module
Power
Module
Taandair
velocity
measurement
point
Topview
Fig.1-1
（1）Output Derating by ambient temperature
PAQ100S48 Vin=48VDC
PAQ100S48-1R2 (including /V option)
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
1m/s
2m/s
AmbientTemperature(℃)
Load(%)
AirVelocity
Naturalconvectioncooling
Fig.1-2
PAQ100S48-1R8 (including /V option)
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
1m/s
2m/s
AirVelocity
Naturalconvectioncooling
AmbientTemperature(℃)
Load(%)
Fig.1-3
PAQ100S48-2R5 (including /V option)
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
1m/s
2m/s
AirVelocity
Naturalconvectioncooling
AmbientTemperature(℃)
Load(%)
Fig.1-4
PAQ100S48-3R3 (including /V option)
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
1m/s
2m/s
AirVelocity
Naturalconvectioncooling
AmbientTemperature(℃)
Load(%)
Fig.1-5
PAQ100S48-5 (including /V option)
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
1m/s
2m/s
AirVelocity
AmbientTemperature(℃)
Load(%)
Naturalconvectioncooling
Fig.1-6
PAQ50S48 Vin=48VDC
PAQ50S48-1R2 (including /V option)
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
AirVelocity
Naturalconvectioncooling
1m/s
2m/s
AmbientTemperature(℃)
Load(%)
Fig.1-7

PAQ-S48
PAQ
B-244
・All specifications are subject to change without notice.
PAQ50S48-1R8 (including /V option)
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
AirVelocity
Naturalconvectioncooling
1m/s,2m/s
AmbientTemperature(℃)
Load(%)
Fig.1-8
PAQ50S48-2R5 (including /V option)
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
AirVelocity
Naturalconvectioncooling
1m/s
2m/s
AmbientTemperature(℃)
Load(%)
Fig.1-9
PAQ50S48-3R3 (including /V option)
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
AirVelocity
Naturalconvectioncooling
1m/s
2m/s
AmbientTemperature(℃)
Load(%)
Fig.1-10
PAQ50S48-5 (including /V option)
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
AirVelocity
Naturalconvectioncooling
1m/s
2m/s
AmbientTemperature(℃)
Load(%)
Fig.1-11
（2）Output derating by PCB
When use with di󱐯erent measurement conditions from
output derating by ambient temperature, use output
derating by PCB temperature as in Fig.1-13 and
1-14. PCB temperature is decided by temperature
of thermal sensor in below Fig.1-12. As the ther-
mal sensor terminals are exposed, when connecting
thermocouple, please take sufficient insulation from
terminals. Over Thermal Protection of power module
is achieved by detecting the PCB temperature through
thermal sensor. When the module operates over the
output derating curve of PCB temperature, Over Ther-
mal Protection (OTP) functions and output shutdown.
Therefore, measurement of PCB temperature is rec-
ommended to ensure the module to operate within the
derating curve.
Topview
Thermalsensor
Output Input
Fig.1-12 Thermal Sensor Position
Output Derating by PCB Temperature
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
PCBTemperature（℃）
Load(%)
Fig.1-13 Output Derating by PAQ100S48 PCB Temperature
100
80
60
40
20
0
−40 −20 0 20 40 60 80 100
PCBTemperature（℃）
Load(%)
Fig.1-14 Output Derating by PAQ50S48 PCB Temperature
2MountingMethod
（1）Prohibition area of pattern wiring
Avoid wiring pattern on PCB in shaded area as
shown in Figure 2-1 as it may cause insulation prob-
lem.
Since the power module may inuence by noise, care
must be taken when wire the signal line on the un-
shaded area.
+V +S
TRM
-S
-V
+Vin -Vin
CNT
36.8
6.2
23.3
3
17.2 8.5
(10.6)10.215.610.265.3
(2.1)4.48.15.816.4
5.1 4.4
32.7
57.9
9.7 5.5
9
（11.1）
TopView
Fig.2-1 Prohibition area of wiring pattern