Analog Devices DC2374B Quick setup guide

1
Rev. 0
DEMO MANUAL DC2374B
DESCRIPTION
LTC4013EUFD
60V Synchronous Buck
Multi-Chemistry Battery Charger
Demonstration circuit 2374B is a multi-chemistry battery
charger with maximum power point tracking (MPPT)
featuring the LT C
®
4013. The LTC4013 has 2 stage CC/CV
charge cycles, 3 stage and 4 stage lead acid and Li-Ion
battery algorithms.
The DC2374B is set up to operate from a 21.5V to 35V
supply or from a solar panel and charges a six cell lead
acid battery at 5A. There are optional input and output
capacitors plus large inductor pads and parallel top and
bottom FET pads to allow high power charging.
The LTC4013 is a 60V controller which makes it suitable
for large battery stacks with up to a 60V supply or solar
panelinput.AnMPPTburstmodefeatureallowsthedevice
to efficiently charge in low light levels. Since the LTC4013 All registered trademarks and trademarks are the property of their respective owners.
PERFORMANCE SUMMARY
is a controller, the power train can be sized from 1A to
over 10A of charge current. The LTC4013 also has an NTC
temperature compensated float voltage to help increase
the battery life.
The operating frequency, charge voltage, low battery (LB)
voltage setting and timing are configurable with external
resistorsandacapacitor.Thedifferentchargingalgorithms
are set by two tri-state mode pins and the TIMER pin as
shown in Table 1.
Refer to the LTC4013 data sheet for more details on the
electrical and timing specifications.
Design files for this circuit board are available.
Specifications are at TA= 25°C
PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Supply Range ENABLE (JP1) = UVLO
ENABLE (JP1) = ON, MPPT (JP2) = ON
21.5
5
24 35
35
V
V
Battery Float Voltage (VFLOAT) MODE1 (JP4) = HI, MODE2 (JP3) = LO
MODE1 (JP4) = MID, MODE2 (JP3) = LO
MODE1 (JP4) = HI, MODE2 (JP3) = MID
MODE1 (JP4) = MID, MODE2 (JP3) = MID
13.6
13.2
14.2
14.4
V
V
V
V
Battery Absorption Voltage (VABS) MODE1 (JP4) = HI, MODE2 (JP3) = LO
MODE1 (JP4) = MID, MODE2 (JP3) = LO
14.2
14.4
V
V
Battery Equalization Voltage (VEQ) MODE1 (JP4) = HI, MODE2 (JP3) = HI, TIMER (JP6) = CAP
MODE1 (JP4) = MID, MODE2 (JP3) = HI, TIMER (JP6) = CAP
16
15.6
V
V
Recharge Voltage (VRECHRG) MODE1 (JP4) = HI, MODE2 (JP3) = MID
MODE1 (JP4) = MID, MODE2 (JP3) = MID
13.77
13.77
V
V
Low Battery (VLB) 10.4 V
MPPT Maximum Power Voltage (VPM) to Open
Circuit Voltage (VOC) Ratio
MPPT (JP2) = ON 83.3 %
FBOC to DCIN Attenuation Ratio MPPT (JP2) = ON 6.9 %

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Rev. 0
DEMO MANUAL DC2374B
BOARD PHOTO

3
Rev. 0
DEMO MANUAL DC2374B
TYPICAL APPLICATION
24V 5A 6 Cell Lead Acid Charger with Absorption and Equalization Charging
Efficiency and Power Loss
vs Charge Current
V
IN
= 24V
V
BAT
= 13.8V
EFFICIENCY
POWER LOSS
CHARGE CURRENT (A)
0
1
2
3
4
5
87
88
89
90
91
92
93
94
95
96
97
0
0.5
1.0
1.5
2.0
2.5
EFFICIENCY (%)
POWER LOSS (W)
4013 TA01a
INTVCC
24V
INTVCC
INTVCC
BAT
DCIN
D1
B0540W
DCIN
ENAB
INTVCC
SYNC
SGND
SENSE
BAT
ITH
RT
CLKOUT
PGND
FB
TG
SW
BST
BG
VIN
FBOC
MPPT
INFET
LB
NTC
MODE1
MODE2
VIN
_S
STAT1
STAT0
TMR
ISMON
LTC4013
BATTERY
4013 TA05
M1
M2
M3
M4
C1
4.7µF
C29
4.7nF
R22
23.2k
R24
86.6k
R23
86.6k
C31
0.22µF
RSENSE
10m
RFB2
499k
RFB1
100k
C16-18
22µF×3
C23
220µF
C19
0.1µF
C13
4.7µF
L1
6.8µH
R17
7.5k
D3
GREEN
R18
7.5k
D2
RED
R1
665k
R3
40.2k
C3
0.1µF
C15
0.15µF
C9
68µF
C2/10
10µF×2
M1, M2, M3, M4 VISHAY SiS434DN
L1 WURTH 7443340680
C1 4.7µF 50V
C2, C10 10µF, 50V
C16-C18 22µF 25V
C23 220µF 25V
C9 PANASONIC 68µF 50V EEHZA1H680P
D4 1N4148WS
4 STAGE CHARGING WITH
13.6V FLOAT, 14.2V ABSORPTION
AND 15.0V EQUALIZATION
3.3 HR TIMEOUT
D4

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Rev. 0
DEMO MANUAL DC2374B
24V SUPPLY QUICK START PROCEDURE
The DC2374B is easy to set up to evaluate the performance
of the LTC4013. Refer to Figure 1 and Figure 2 for proper
measurement equipment setup.
NOTE: When measuring the input or output voltage ripple,
care must be taken to avoid a long ground lead on the
oscilloscope probe. Measure the input or output voltage
ripple by touching the probe tip directly across the VIN or
VOUT and GND terminals. See Figure 2 for proper scope
probe technique.
1. Set the DC2374B to operate in a three stage lead acid
battery charging mode by positioning the jumpers as
listed below:
JP1 ENABLE - UVLO
JP2 MPPT - OFF
JP3 MODE2 – LO
JP4 MODE1 – HI
JP5 NTC – INT
JP6 TIMER – CAP
JP7 PULL_UP PWR - DCIN
2. With power off, connect a 0V to 16V, 6A power supply
(PS2) to BAT and GND terminals with a series ammeter
and a voltmeter as shown in Figure 1.
3. With power off, connect a 5.1A load (LOAD1) to BAT
and GND terminals in parallel with PS2 as shown in
Figure 1.
4. Set PS2 to 10V and turn on PS2 and LOAD1.
5. With power off, connect a 0V to 35V, 5A power supply
(PS1) to DCIN and GND terminals with a series am-
meter and a voltmeter as shown in Figure 1.
CHARGING OPTIONS
Table 1. LTC4013 Charging Algorithm Selection
MODE1 MODE2 TIMER Charging Mode VFLOAT (V) VABS (V) VEQ (V) Recharge TERMINATION EQ Timeout
L L 0V 2 Stage 13.6 - - - None None
L L CAP 2 Stage 13.6 - - - 3.33hrs None
L M 0V 2 Stage 14 - - - None None
L M CAP 2 Stage 14 - - - 3.33hrs None
L H 0V N/A, Do Not Use - - - - - -
L H CAP 4 Stage 13.6 14.2 15 - 3.33hrs 50min
M L 0V 3 Stage 13.2 14.4 - - C/10 (~14.1V) None
M L CAP 3 Stage 13.2 14.4 - - 3.33hrs None
M M 0V Li-Ion 14.4 - - 95.8%
(13.77V)
C/10 (~14.3V) None
M M CAP Li-Ion 14.4 - - 95.8%
(13.77V)
3.33hrs None
M H 0V N/A, Do Not Use - - - - - -
M H CAP 4 Stage 13.2 14.4 15.6 - 3.33hrs 25min
H L 0V 3 Stage 13.6 14.2 - - C/10 (~14.1V) None
H L CAP 3 Stage 13.6 14.2 - - 3.33hrs None
H M 0V Li-Ion 14.2 - - 97.1
(13.77V)
C/10 (~14.1V) None
H M CAP Li-Ion 14.2 - - 97.1
(13.77V)
3.33hrs None
H H 0V N/A, Do Not Use - - - - - -
H H CAP 4 Stage 13.6 14.2 15 - 3.33hrs 25min

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Rev. 0
DEMO MANUAL DC2374B
6. Set PS1 to 17V and then turn on.
7. Slowly increase PS1 until the STAT0 LED illuminates.
DCIN is now above the UVLO rising threshold.
NOTE: PS1 can be increased from this voltage up to 35V.
Make sure that the input voltage does not exceed 40V.
8. Observe that the battery charger current is only about
1A, 20%, and the voltage on the ISMON terminal
measures about 0.2VDC. This is because the battery
voltage is below the LB threshold. If the battery voltage
remains below low bat for 25 minutes then the charge
cycle is terminated.
9. Slowly increase PS2 until the battery current jumps up
to about 5A, full load. ISMON reads close to 1V. The
battery voltage is now above the low battery threshold.
10. Slowlyincrease PS2 until thebattery current decreases
to 4.5A. If the STAT0 LED is on and the STAT1 LED is
off then the battery voltage is now approaching the
absorption voltage and the charge timer has started.
The battery will charge for about 3.3hrs before switch-
ing to float mode.
11. When the LTC4013 switches to float mode, the charge
current will drop to 0A until the battery voltage is
decreased below 13.6V.
To observe equalization mode, follow steps 12 thru 18.
Otherwise skip to step 19.
NOTE: Equalization mode will not enable more than one
time during a power on event. If an equalization cycle has
already completed, power will need to be cycled in order
to run a second equalization cycle.
24V SUPPLY QUICK START PROCEDURE
12. Make sure PS1 is set above UVLO rising threshold and
set PS2 to about 12V.
13. Make sure JP6, the TIMER jumper, is still in the CAP
position. Set JP3, the MODE2 jumper, to the HI posi-
tion. The STAT0 LED should be on and the STAT1 LED
should be off. If not, power PS1 down, set JP3 to LO,
turn PS1 back on, then set JP3 back to HI.
14. Increase PS2 until the battery voltage approaches the
absorption voltage as done in step 10.
15. Continueincreasing PS2 untilthebatterycurrent drops
below 500mA.
16. In about 3.33 hours the charge current will increase
to about 1A. This is equalization mode.
17. IncreasePS2 untilthebatterycurrentstartsto decrease.
The battery voltage is approaching the equalization
voltage.
18. Afterabout 25 minutes in equalizationmodethe charge
current will return to about 0A until the battery voltage
is reduced below the float voltage of about 13.6V.
19. When done, turn off and disconnect all loads and
power supplies.
NOTE: To evaluate the MPPT function, see the MPPT Quick
Start Procedure section.

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Rev. 0
DEMO MANUAL DC2374B
24V SUPPLY QUICK START PROCEDURE
Figure 1. Proper Measurement Equipment Setup
Figure 2. Measuring Input or Output Ripple

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Rev. 0
DEMO MANUAL DC2374B
MPPT QUICK START PROCEDURE
TheLTC4013hasamaximum power point tracking feature
that regulates the input voltage to the maximum power
voltage (VPM) by adjusting the output of the charger.
The LTC4013 MPPT function periodically stops charg-
ing, measures the open circuit voltage (VOC), and then
continues charging while regulating the input voltage. As
the sunlight changes, the VOC and VPM also change. This
board is setup to regulate a VPM voltage of 83% of the
measured VOC. This ratio can be changed to match the
solar panel by changing R2, R8, and R10. To change the
VOC/VPM ratio, follow the procedure listed in the Maximum
Power Point Tracking section in the LTC4013 data sheet.
There are a number of ways to test the MPPT function of
the LTC4013. The most accurate way is to use a solar panel
in sunlight, however it is difficult to control the sunlight
conditions. Another method is to use a covered solar panel
(dark panel) biased thru a controlled current source from
0A to the short circuit current (ISC) of the panel as shown
in Figure 3. The solar panel can be replaced with a string
of silicon rectifier diodes that can handle the power dis-
sipation of Vf• ISC. With these methods, increasing the
current on the panel to ISC produces the maximum VOC
for a full light condition. Reducing this current simulates
lower light conditions.
A more simple method is to supply a voltage to DCIN with
a series input resistor (RIN) as shown in Figure 4. RIN is
calculated by (VOC – VPM)/IMP where IMP is the maximum
power current. The supply current limit is set to ISC and the
voltage of the supply is set to the desired VOC representing
thedesiredsunlight. Set the power supply to the maximum
VOC to produce a full light condition. Reducing the supply
voltage simulates lower light conditions.
To evaluate the LTC4013 MPPT function follow the pro-
cedure below:
1. Set the DC2374B to operate in MPPT mode with a three
stage lead acid battery charging mode by positioning
the jumpers as listed below:
JP1 ENABLE - ON
JP2 MPPT - ON
JP3 MODE2 – LO
JP4 MODE1 – HI
JP5 NTC – INT
JP6 TIMER – CAP
JP7 PULL_UP PWR - DCIN
2. With power off, connect a 0V to 16V, 6A power supply
(PS2) to BAT and GND terminals with a series ammeter
and a voltmeter as shown in Figure 1.
3. With power off, connect a 5.1A load (LOAD1) to BAT
and GND terminals in parallel with PS2 as shown in
Figure 1.
4. Set PS2 to 10V and turn on PS2 and LOAD1.
5. With power off, connect a solar panel or solar panel
simulator as previously discussed and refer to Figure
3 and Figure 4 as needed.
6. With a full or close to full light condition, observe that
the battery charger current is only about 1A, 20%, and
the voltage on the ISMON terminal measures about
0.2VDC. DCIN is also above the VPM point at this
time. This is because the battery voltage is below the
Low Battery threshold. If the battery voltage remains
below low bat for 25 minutes then the charger cycle
is terminated. The solar panel can supply more power
to the charger than needed at this point.
7. Slowly increase PS2 until the battery current jumps
up to above 1A. The battery voltage is now above
the low battery threshold. If the IMP is less than the
input current needed to provide full charge current,
the LTC4013 will regulate the charge current below
full load to obtain a DCIN voltage near the VPM point
for the measured VOC.
8. If possible, vary the light conditions for the solar panel
orsimulator and observe thechargecurrentis adjusted
to maintain the VMP for the measured VOC.
NOTE:If the charge current is reduced below C/10,
~ 500mA, and the battery voltage is over the low battery
threshold, then the TEOC timer will start even if the battery
voltage is not approaching the absorption voltage.
9. If possible, return the light source to near full light
condition.

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Rev. 0
DEMO MANUAL DC2374B
MPPT QUICK START PROCEDURE
10. Slowly increase PS2 until the battery current starts
to decrease below 1A. The battery voltage is now
approaching the absorption voltage. The timer will
start if not already started from a low light condition.
11. When the timer has elapsed, the LTC4013 will switch
to float mode and the charge current will drop to near
0A until the battery voltage is reduced below the float
voltage.
12. Whendone, turn off anddisconnectall loads andpower
supplies.
Figure 3. Solar Panel Simulator Using a Dark Solar Panel or Diode String

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Rev. 0
DEMO MANUAL DC2374B
MPPT QUICK START PROCEDURE
Figure 4. Solar Simulator Using a Power Supply with Series Resistor

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Rev. 0
DEMO MANUAL DC2374B
APPLICATION INFORMATION
Changing Board Configuration
This board is optimized for a 24V to 14V lead acid bat-
tery with 5A charge current, however it can be modified
for other charging topologies, different charge currents,
plus different DCIN and battery voltages. The DC2374B
can also accommodate higher power outputs. There are
optional capacitors, inductor, FETs, and a catch diode on
the bottom of the board that can be used for larger com-
ponents if needed. The layout was designed with ample
copperandvias to provide enough thermal relief for 300W.
Refer to the data sheet for the sizing of all of the required
components and changes as needed.
No Battery Operation
The LTC4013 will operate without a battery, however there
needsto be at least2Von the SENSEpin,VIN mustbe above
4.5V, DCIN must be above VIN and above VBAT by about
100mV, plus the ENAB pin must also be above its rising
threshold to startup. For single input FET applications VIN
will increase to DCIN –Vfof the input FET body diode. For
dual input FET applications a resistor can be used to bleed
current across the first FET to allow VIN to charge up. For
MPPT applications, the added resistor should provide an
RC constant (R • CVIN) greater than 10ms.
One way to raise the SENSE pin above to 2V is to provide
a weak pullup from INTVCC with a blocking diode on
the BAT pin when no battery is present. VFLOAT must be
greater than INTVCC for this method. Refer to the “Starting
Without a Battery”section of the LTC4013 data sheet for
more information on this.
Connecting a High Voltage Battery
When connecting a battery to the DC2374B demo board,
the battery will instantaneously charge the bulk capaci-
tors on the BAT and the VIN nodes. Since the battery and
capacitors have very low ESR, the instantaneous current
can be 10’s or 100’s of amps when the battery is first
connected and can damage the components in its path.
It is recommended to pre-charge the BAT terminals of the
DC2374B prior to connecting a low ESR battery. This can
be done by connecting the battery thru a current limiting
resistor first, then short across the resistor. Refer to the
Plugging in a Battery section of the LTC4013 data sheet
for more information.

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Rev. 0
DEMO MANUAL DC2374B
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 1 C1 CAP, CHIP, X5R, 4.7µF, ±10%, 50V, 0805 TDK, C2012X5R1H475K
2 3 C2, C13, C21 CAP, CHIP, X5R, 68nF, ±10%, 50V, 0402 TDK, CGA2B3X5R1H683M050BB
3 2 C3, C4 CAP, CHIP, X5R, 10µF, ±20%, 50V, 1210 TDK, C3225X5R1H106M250AB
4 1 C10 CAP.,150uF,ALUM. ELECT.,50V,20%,10x10.2mm RADIAL,FK
Series, AEC-Q200
PANASONIC, EEE-FK1H151P
5 1 C14 CAP, CHIP, X5R, 4.7µF, ±20%, 6.3V, 0603 TAIYO YUDEN, JMK107BJ475MAHT
6 1 C15 CAP, CHIP, X5R, 0.22µF, ±10%, 25V, 0402 TAIYO YUDEN, TMK105BJ224KVHF
7 1 C16 CAP, CHIP, COG, 33pF,±5%, 50V, 0402 JOHANSEN TECHNOLOGY,
500R07S330JV4T
8 1 C17 CAP, CHIP, X5R, 0.22µF, ±10%, 10V, 0402 TAIYO YUDEN, LMK105BJ224KV-F
9 3 C18-C20 CAP, CHIP, X5R, 22µF, ±20%, 25V, 1210 TAIYO YUDEN, TMK325BJ226MM-T
10 1 C24 CAP, 220µF, 25V, Alum. Electro, 20%, 8mm X 10.2mm PANASONIC, EEHZC1E221P
11 2 C26, C29 CAP, CHIP, COG, 100pF, ±5%, 50V, 0402 TDK, CGJ2B2C0G1H101J050BA
12 1 C27 CAP, CHIP, X7R, 47nF, ±10%, 25V, 0402 MURATA, GCM155R71E473KA55D
13 1 C28 CAP, CHIP, X7R, 4.7nF, ±10%, 25V, 0402 MURATA, GRM155R71E472KA01D
14 1 C31 CAP, CHIP, X5R, 10nF, ±10%, 10V, 0402 KEMET, C0402C103K8PAC7867
15 1 D1 DIODE, GEN PURP, 75V, 250MA, SOD123 DIODES INC, 1N4448WQ-7-F
16 1 D5 DIODE, GEN PURP, 75V, 150MA, SOD323F ON SEMICONDUCTOR, 1N4148WS
17 1 L1 IND, SMT, 6.8µH, ±20% WURTH, 74439358068
18 4 M1, M2, M3, M4 MOSFET, N-CH, 40V, 10.5A, 1212-8 VISHAY SILICONIX, SI7116DN-T1-E3
19 2 R1, R15 RES, CHIP, 20Ω, ±1%, 1/16W, 0402 VISHAY, CRCW040220R0FKED
20 2 R2, R3 RES, CHIP, 665kΩ, ±1%, 0.1W, 0402 VISHAY, CRCW0402665KFKED
21 2 R4,R21 RES, CHIP, 40.2KΩ, ±1%, 0.1W, 0402 VISHAY, CRCW040240K2FKED
22 2 R5,R24 RES, CHIP, 10KΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040210K0FKED
23 1 R6 RES, CHIP, 49.9KΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040249K9FKED
24 3 R7-R9 RES, CHIP, 100KΩ, ±5%, 1/16W, 0402 VISHAY, CRCW0402100KJNED
25 1 R10 RES, CHIP, 3.40KΩ, ±1%, 1/16W, 0402 VISHAY, CRCW04023K40FKED
26 2 R11, R12 RES, CHIP, 86.6KΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040286K6FKED
27 3 R13, R14, R17 RES, CHIP, 100KΩ, ±1%, 1/16W, 0402 VISHAY, CRCW0402100KFKED
28 1 R16 RES, CHIP, 499KΩ, ±1%, 1/16W, 0402 VISHAY, CRCW0402499KFKED
29 1 R22 RES, CHIP, 0Ω, ±1%, 1/16W, 0402 VISHAY, CRCW04020000Z0ED
30 1 R23 RES., 4.99 OHMS, 1%, 1/16W, 0402, AEC-Q200 VISHAY, CRCW04024R99FKEDC
31 1 RSENSE RES, CHIP, 10mΩ, ±1%, 1W, 1632 LONG SIDE TERM SUSUMU, PRL1632-R010-F-T1
32 1 U1 60V SYNC. BUCK MULTI-CHEMISTRY BATTERY CHARGER ANALOG DEVICES, LTC4013EUFD#PBF

12
Rev. 0
DEMO MANUAL DC2374B
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Additional Demo Board Circuit Components
33 0 C5 (OPT) CAP, 68µF, 50V, Alum. Electro, 20%, 8mm x 10.2mm PANASONIC, EEHZA1H680P
34 0 C6-C9, C22, C23 (OPT) CAP, CHIP, X5R, 10µF, ±20%, 50V, 1210 TDK, C3225X5R1H106M250AB
35 0 C11, C12 (OPT) CAP.,68uF,ALUM. ELECT.,50V,20%,8x10.2mm,
RADIAL,AEC-Q200
PANASONIC, EEHZA1H680P
36 0 C25 (OPT) CAP, 220µF, 25V, Alum. Electro, 20%, 8mm X 10.2mm PANASONIC, EEHZC1E221P
37 0 C30 (OPT) CAP, CHIP, COG, 100pF, ±5%, 50V, 0402 TDK, CGJ2B2C0G1H101J050BA
38 0 D2 (OPT) DIODE, SCHOTTKY, 60V, 3A, SMB ON SEMICONDUCTOR, MBRS360BT3G
39 0 D6 (OPT) DIODE,TVS,12V,15.5V,350W,SOD323-2 MICRO COMMERCIAL, ESD12VD3B-TP
40 0 L2 (OPT) IND, SMT, WE-HCI 1365 WURTH, WE-HCI 1365
41 0 M5, M6 (OPT) MOSFET, N-CH, 40V, 35A, 1212-8 VISHAY SILICONIX, SIS434DN-T1-GE3
42 0 R20 (OPT) RES, CHIP, 0Ω JUMPER, 1W, 2512 VISHAY, CRCW25120000Z0EG
Hardware: For Demo Board Only
43 1 D3 DIODE, LED, GREEN, 0603 LITE-ON, LTST-C190KGKT
44 1 D4 DIODE, LED, RED, 0603 LUMEX, SML-LX0603SRW-TR
45 4 E1, E4, E5, E8 TURRET, 0.09 DIA MILL-MAX, 2501-2-00-80-00-00-07-0
46 4 E2, E3, E6, E7 BANANA JACK, NON-INSULATED KEYSTONE, 575-4
47 10 E9 - E18 TURRET, 0.061 DIA MILL-MAX, 2308-2-00-80-00-00-07-0
48 3 JP1, JP3, JP4 HEADER, 4PINS, 2mm WURTH, 62000411121
49 4 JP2, JP5-JP7 HEADER, 3PINS, 2mm WURTH, 62000311121
50 7 XJP1-XJP7 SHUNT 2mm 1X2 WURTH, 60800213421
51 2 R18, R19 RES, CHIP, 7.5KΩ, ±1%, 1/4W, 1206 YAGEO, RC1206FR-077K5L
52 4 MH1-MH4 STANDOFF, NYLON 0.5" KEYSTONE, 8833
PARTS LIST

13
Rev. 0
DEMO MANUAL DC2374B
SCHEMATIC DIAGRAM
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
A
A
B
B
C
C
D
D
EXT
NOTES: UNLESS OTHERWISE SPECIFIED 1. RESISTORS: OHMS, 0402, 1%, 1/16W 2. CAPACITORS: 0402, 10%, 50V
INT
5V-35V
24V NOMINAL
13.6V FLOAT
OFF
ON
5A CC
OFF
ON
EXT_PWRDCIN
LO
HI
MID
LO
HI
MID
0V - 40V
ON
*UVLO
OFF
* DEFAULT UVLO RISING THRESHOLD = 21.5V
DESIGNATES SGND NODE
FSW = 500kHz
LB = 10.4V
TEOC = 3.33hr
OPT
OPT
5V MAX
S
SS
S
S
INTVCC
INTVCC
S
S
INTVCC
S
S
INTVCC
S
DCIN
DCIN
S
S
S
S
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
ZPPRODUCTION- 02 07-19-18
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
ZPPRODUCTION- 02 07-19-18
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
ZPPRODUCTION- 02 07-19-18
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
CUSTOMER NOTICE
SCHEMATIC
SCALE = NONE
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LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
02
DEMO CIRCUIT 2374B
11
60V SYNCHRONOUS BUCK
N/A
LTC4013
NC ZP
07-19-18
MULTI-CHEMISTRY BATTERY CHARGER
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
CUSTOMER NOTICE
SCHEMATIC
SCALE = NONE
www.analog.com
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
02
DEMO CIRCUIT 2374B
11
60V SYNCHRONOUS BUCK
N/A
LTC4013
NC ZP
07-19-18
MULTI-CHEMISTRY BATTERY CHARGER
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
CUSTOMER NOTICE
SCHEMATIC
SCALE = NONE
www.analog.com
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
02
DEMO CIRCUIT 2374B
11
60V SYNCHRONOUS BUCK
N/A
LTC4013
NC ZP
07-19-18
MULTI-CHEMISTRY BATTERY CHARGER
R7
100k
5%
+
C24 220uF
25V
M2
SI7116DN-T1-E3
R22 4.99
E5
BAT
C7 OPT 1210
D1
1N4448WQ-7-F
JP7
PULL_UP PWR
D5
1N4148WS
21
C28 4.7nF 25V
R3
665k
R15
20
+
C5
OPT
C13 68nF
M6
OPT
+
C11
OPT
TPB2
TPA1
+
C25
OPT
C26
100pF
+
C10 150uF EEE-FK1H151P
TPA2
R4
40.2k C17
0.22uF
10V
E11 STAT0
C30
OPT
R18
7.5k
1206
E9
SYNC
R8
100k
5%
R17 100k
C19 22µF 1210
25V
E1
DCIN
E16 NTC
R16 499k
C18 22µF 1210
25V
C22 OPT 1210
C15 0.22uF
25V
E12 STAT1
L2
OPT
WE-HCI 1365
C6 OPT 1210
C31
10nF
25V
R6
49.9k
D6 ESD12VD3B
2 1
E10 EXT_PWR
L1
6.8µH
74439358068
M4
SI7116DN-T1-E3
C20 22µF 1210
25V
R2
665k
E15 GND
JP5 NTC
R10
3.40k
C2 68nF
JP3
MODE2
E13
ISMON
RSENSE
10m
1W
R23 0
D2
OPT
POWERDI123A
JP4
MODE1
R1
20
E14 CLKOUT
D4
RED
R19 7.5k
1206
JP1
ENABLE
R14
100K
R24
10k
R9
100k
5%
M1 SI7116DN-T1-E3
C3 10µF 1210
U1 LTC4013EUFD
MODE1
11
LB
9
VIN
27
CLKOUT 13
ISMON
6
TMR
10
SGND
29
MPPT
3
PGND
26
NTC 17
DCIN
2
MODE2
12 FB 18
SYNC
14
STAT0 7
ENAB
5
RT
15
SW 23
STAT1 8
ITH
16
BG 24
INTVCC 25
VIN_S
28
SENSE 20
BAT 19
INFET
1
FBOC
4
TG 22
BST 21
C9 OPT 1210
C1 4.7µF
0805
E6
C14
4.7uF
0603 6.3V
E18
GND
R12 86.6k
C21 68nF
25V
C23 OPT 1210
TPB1
C4 10µF 1210
D3
GREEN
C16
33pF
E7
E8
GND
R13
100K
C8 OPT 1210
E2
C29
100pF
R5
10k
C27 47nF
E17 GND
E3
E4
GND
JP2
MPPT
R20 0
M3
SI7116DN-T1-E3
JP6
TIMER
R21 40.2k
+
C12
OPT
M5
OPT
R11
86.6k

14
Rev. 0
DEMO MANUAL DC2374B
 ANALOG DEVICES, INC. 2016–2019
02/19
www.analog.com
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.
Legal Terms and Conditions
By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and
conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation
Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”)
and Analog Devices, Inc. (“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to
Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and
agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted
is expressly made subject to the following additional limitations:Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board;and (ii) permit any Third
Party to access the Evaluation Board. As used herein, the term “Third Party”includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is
NOT sold to Customer;all rights not expressly granted herein, including ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all
be considered the confidential and proprietary information of ADI. Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of
use of the Evaluation Board or termination of this Agreement, Customer agrees to promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile
or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited
to soldering or any other activity that affects the material content of the Evaluation Board. Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS
Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF
LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS”AND ADI MAKES NO WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY
DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS
LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF THE EVALUATION BOARD, INCLUDING
BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE AMOUNT OF ONE
HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable United States
federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of Massachusetts
(excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby submits
to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.