Analog Devices Linear ADI Power LTC3310-1 User manual

1
DEMO MANUAL DC3043A
Rev. 0
DESCRIPTION
LTC3310-1
3.3V to 1.0V at 10A, 2MHz Automotive Low
EMI Buck Regulator in a 2.11cm2Solution
Demonstration Circuit 3043A shows the LTC3310-1 10A,
1V fixed output, synchronous step-down Silent Switcher
®
operating as a 2MHz 3.3V to 1.0V 10A buck regulator. The
LTC3310-1 supports operating frequencies from 500kHz
up to 5MHz. The LTC3310-1 is a compact, ultralow emis-
sion, high efficiency, and high speed synchronous mono-
lithic step-down switching regulator. The LTC3310-1 has
Active Voltage Positioning (AVP) where the output voltage
is dependent on load current. At light loads the output
voltage is regulated above the nominal value. At full load
the output voltage is regulated below the nominal value.
The DC load regulation is adjusted to improve transient
performance and reduce output capacitor requirements.
DC3043A is set up to run in forced continuous mode with
a 2MHz switching frequency but can be configured to
pulse skip mode and different switching frequencies. RT
is connected to VIN which sets the MODE/SYNC pin as an
input and allows the LTC3310-1 to sync from an external
clock. Connecting the MODE/SYNC pin to VIN sets the
All registered trademarks and trademarks are the property of their respective owners.
PERFORMANCE SUMMARY
mode to pulse skip mode and connecting the MODE/SYNC
pin to GND sets the mode to forced continuous mode.
The DC3043A also has an EMI filter to reduce conducted
EMI. This EMI filter can be included by applying the input
voltage at the VIN EMI terminal. The EMI performance of
the board is shown in the EMI TEST RESULTS section.
The red lines in the EMI performance graphs illustrate
the CISPR25 Class 5 peak limits for the conducted and
radiated emission tests.
The LTC3310S/LTC3310-1 data sheet gives a complete
description of the part, operation and application infor-
mation. The data sheet must be read in conjunction with
this demo manual. The LTC3310-1 is assembled in a
3mm × 3mm LQFN package with exposed pad for low
thermal resistance. The layout recommendations for low
EMI operation and maximum thermal performance are
available in the data sheet section Low EMI PCB Layout.
Design files for this circuit board are available.
Specifications are at TA= 25°C
PARAMETER CONDITIONS MIN TYP MAX UNITS
DC3043A Input Voltage Range 2.25 5.5 V
DC3043A VOUT Voltage Range IOUT = 4A 1.0 V
DC3043A Output Current 10 A
Switching Frequency 1.8 2.0 2.2 MHz
VOUT Active Voltage Positioning 1.7 2.4 3.1 mV/A

2
DEMO MANUAL DC3043A
Rev. 0
BOARD PHOTO

3
DEMO MANUAL DC3043A
Rev. 0
QUICK START PROCEDURE
Demonstration circuit 3043A is easy to set up and evaluate
the performance of the LTC3310-1. Refer to Figure1 for
proper measurement equipment setup and follow the pro-
cedure below:
NOTE:For accurate V
IN
, V
OUT
and efficiency measure-
ments, measure VIN at the VIN SNSE and GND SNSE tur-
rets and V
OUT
at the VOUT SNSE and GND SNSE turrets as
illustrated as VM1 and VM2 in Figure1. When measuring
the input or output voltage ripple, care must be taken
to avoid a long ground lead on the oscilloscope probe.
Measure the output voltage ripple by touching the probe
tip directly across the output turrets or to TP1 as shown
in Figure2.
1. Set the JP1 Jumper to the HI position.
2. With power off, connect the input power supply to VIN
and GND. If the input EMI filter is desired, connect the
input power supply to VIN EMI and GND. Connect LD1
with the load set to 0A.
3. Slowly increase PS1 to 1V. If AM1 reads less than
20mA, increase PS1 to 3.3V. Verify that VM1 reads
3.3V and VM2 reads 1.2V. Record VM1, VM2, VM3
AM1 and AM2. Connect an oscilloscope voltage probe
as shown in Figure2. Set Channel to AC-coupled, volt-
age scale to 20mV and time base to 10µs. Record VOUT
ripple voltage. Verify that PGOOD voltage is above 3V.
Calculate Die temperature using formula below:
TJ(°C)=
V
SSTT
4mV
– 273
4. Increase the load by 1A intervals up to 10A and observe
the voltage output regulation, ripple voltage, and the
voltage on the SSTT turret.
5. If Pulse Skip Mode is desired, set PS1 to 0V. Install a
0Ω in the R5 location or short the MODE/SYNC turret
to VIN. Repeat steps 1 through 4. In step 4 observe
that the switching waveform is now operating in Pulse
Skip Mode at low currents.
6. To change the frequency, remove R4 and install the
desired RT resistor in the R6 location. Note, the MODE/
SYNC pin is an output when R6 is installed and the
MODE/SYNC pin should have high impedance to GND
and VIN. Size the inductor, output capacitors and com-
pensation components to provide the desired inductor
ripple and a stable output.
7. To test the transient response with a base load, add the
desired resistor to produce a minimum load between
VOUT and I_STEP turrets (RL shown on Figure1).
Note that the total load resistance will be RL plus R10
(50mΩ). Adjust a signal generator with a 10ms period,
10% duty cycle and an amplitude from 1V to 2V to start.
8. Measure the I_STEP voltage to observe the current,
VI_STEP/50mΩ. Adjust the amplitude of the pulse to
provide the desired transient. Adjust the rising and
falling edge of the pulse to provide the desired ramp
rate. The Load Transient Response Measurement plot
shows a load step from 1.5A (RL = 0.62Ω) to 7.5A.
IOUT =
V
I_STEP
50mΩ
VGS = VSG_INPUT – VI_STEP
9. When done, turn off SG1, PS1 and Load. Remove all
connections to demo board.
Load Transient Response Measurement
LTC3310-1
3.3V
IN TO 1V
OUT
LOADSTEP 1.5A TO 7.5A 6A/µs
10µs/DIV
V
I_STEP
100mV/DIV
V
OUT
20mV/DIV
V
SG_INPUT
2V/DIV
dc3043a QSP01

4
DEMO MANUAL DC3043A
Rev. 0
QUICK START PROCEDURE
Figure1. Test Setup for the DC3043A Demo Board
Figure2. Technique for Measuring Output Ripple and Step Response
PS1
3.3V
10A
VM1 VM2
VM3
SG1
SCOPE
RL
LD1

5
DEMO MANUAL DC3043A
Rev. 0
CIRCUIT SCHEMATIC
Efficiency and Power Loss vs Load Current
Load Transient Response Forced
Continuous Mode
VOUT Load Regulation
(LTC3310S-1, LTC3310-1)
dc3043a CS01
EN
RT
MODE/SYNC
SSTT
ITH
V
OUT
1V
10A
PGOOD
SW
VOUT
AGND
VIN
VIN
V
IN
2.25V TO 5.5V
PGND
LTC3310-1
1M
249k
22µF
100nH
15k
100k
20Ω
330pF
3.3pF
22µF 0.47µF
OPT
0.47µF
OPT
1µF
0201
1µF
0201
0.033µF 47µF
×7
L = COILCRAFT, XEL4030-101ME
0.1µF
VIN
V
IN
= 3.3V
V
OUT
= 1.0V
f
OSC
= 2MHz
EFFICIENCY
POWER LOSS
LOAD CURRENT (A)
0
1
2
3
4
5
6
7
8
9
10
0
10
20
30
40
50
60
70
80
90
100
0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
2.4
2.7
3.0
EFFICIENCY (%)
POWER LOSS (W)
dc3043a CS02
ILOAD (A)
0
1
2
3
4
5
6
7
8
9
10
0.90
0.92
0.94
0.96
0.98
1.00
1.02
1.04
1.06
1.08
1.10
VOUT (V)
dc3043a CS03
125°C
25°C
–45°C
LTC3310-1
3.3V
IN TO 1V
OUT
LOADSTEP 1.5A TO 7.5A 6A/µs
VOUTMIN = 0.983V, VOUTMAX = 1.018V
10µs/DIV
I
OUT
2A/DIV
1V
V
OUT
10mV/DIV
dc3043a CS04

6
DEMO MANUAL DC3043A
Rev. 0
EMI TEST RESULTS
Conducted EMI Performance (CISPR25 Conducted
Emission Test with Class 5 Peak Limits)
Radiated EMI Performance (CISPR25 Radiated
Emission Test with Class 5 Peak Limits)
Radiated EMI Performance (CISPR25 Radiated
Emissions Test with Class 5 Peak Limits)
FREQUENCY (MHz)
AMPLITUDE (dBµV/m)
60
50
30
10
40
20
0
–10
–20
dc3043a EMI01
0 50 9030 70
110
10040 8020 6010
CLASS 5 PEAK LIMIT
MEASURED DATA
AMBIENT NOISE
DC3043A DEMO BOARD
(WITH EMI FILTER INSTALLED)
3.3V INPUT TO 1V OUTPUT AT 8A, f
SW
= 2MHz
FREQUENCY (MHz)
AMPLITUDE (dBµV/m)
dc3043a EMI02
0 500 900300 700
1000
400 800200 600100
60
50
40
30
20
10
–10
–20
0
HORIZONTAL POLARIZATION
CLASS 5 PEAK LIMIT
MEASURED EMISSIONS
AMBIENT NOISE
DC3043A DEMO BOARD
(WITH EMI FILTER INSTALLED)
3.3V INPUT TO 1V OUTPUT AT 8A, fSW = 2MHz
FREQUENCY (MHz)
AMPLITUDE (dBµV/m)
dc3043a EMI03
0 500 900300 700
1000
400 800200 600100
60
50
40
30
20
10
–10
–20
0
VERTICAL POLARIZATION
CLASS 5 PEAK LIMIT
MEASURED EMISSIONS
AMBIENT NOISE
DC3043A DEMO BOARD
(WITH EMI FILTER INSTALLED)
3.3V INPUT TO 1V OUTPUT AT 8A, fSW = 2MHz

7
DEMO MANUAL DC3043A
Rev. 0
THEORY OF OPERATION
Introduction to the DC3043A
The DC3043A demonstration circuit features the
LTC3310-1, a fixed 1V output, synchronous step-down
Silent Switcher.”The LTC3310-1 is a monolithic, constant
frequency, current mode step-down DC/DC converter. An
oscillator, with frequency set using a resistor on the RT
pin, turns on the internal top power switch at the begin-
ning of each clock cycle. Current in the inductor then
increases until the top switch comparator trips and turns
off the top power switch. The peak inductor current, at
which the top switch turns off, is controlled by the volt-
age on the internal ITH node. The error amplifier servos
the ITH node by comparing the voltage on the internal
VFB pin with an internal 500mV reference. When the load
current increases, it causes a reduction in the feedback
voltage relative to the reference leading the error amplifier
to raise the ITH voltage until the average inductor current
matches the new load current. When the top switch turns
off, the synchronous power switch turns on until the next
clock cycle begins or the inductor current falls to zero.
If overload conditions result in excessive current flowing
through the bottom switch, the next clock cycle will be
delayed until the switch current returns to a safe level.
The LTC3310-1 includes Active Voltage Positioning (AVP)
where the output voltage is dependent on load current. At
light loads the output is regulated above the nominal. At
full load the output is regulated below the nominal. The DC
regulation is degraded to improve transient performance
and reduce output capacitance requirements.
If the EN pin is low, the LTC3310-1 is in shutdown and in
a low quiescent current state. When the EN pin is above
its threshold, the switching regulator will be enabled.
The MODE/SYNC pin synchronizes the switching fre-
quency to an external clock, is a clock output or sets the
PWM mode. The PWM modes of operation are either pulse
skip or forced continuous. See the LTC3310S/LTC3310-1
data sheet for more detailed information.
The maximum allowable operating frequency is influenced
by the minimum on time of the top switch, the ratio of
VOUT to VIN and the available inductor values. The maxi-
mum allowable operating frequency may be calculated in
the formula below.
Select an operating switching frequency below fSW(MAX).
Typically, it is desired to obtain an inductor current of 30%
of the maximum LTC3310-1 operating load, 10A. Use the
formulas below to calculate the inductor value to obtain
a 30% (3A) inductor ripple for the operating frequency.
fSW(MAX) =
V
OUT
VIN(MAX) • tON(MIN)
When determining the compensation components, C10,
C11 and R8, controlling the loop stability and transient
response are the two main considerations. The LTC3310-1
has been designed to operate at a high bandwidth for
fast transient response capabilities. This reduces out-
put capacitance required to meet the desired transient
response. The mid-band gain of the loop increases with
R8 and the bandwidth of the loop increases with decreas-
ing C11. C10 along with R8 provides a high frequency
pole to reduce the high frequency gain.
L≈VOUT
3A • fSW
• 1– VOUT
VIN(MAX)
⎛
⎝
⎜⎞
⎠
⎟for VOUT
VIN(MAX)
≤0.5
L≈0.25• VIN(MAX)
3A • fSW
for VOUT
VIN(MAX)
>0.5
Loop stability is generally measured using the Bode Plot
method of plotting loop gain in dB and phase in degrees.
The 0dB crossover frequency should be less the 1/6 of
the operating frequency to reduce the effects of added
phase of the modulator. The control loop phase margin
goal should be 45° or greater and a gain margin goal of
8dB or greater.
Ceramic capacitors with a X5R or X7R dielectric should be
used for both input and output capacitors. It is important
to review the impedance versus frequency when selecting
a capacitor for the application. Ceramic capacitors have a
resonant frequency in the 1MHz to 3MHz range. Setting
the operating frequency above the resonant frequency will
result in higher output ripple voltage due to the ESL of
the capacitor. Low inductance capacitors are available at
a higher cost but can improve the ripple voltage by 30%.
Low inductance capacitors are available from Murata,
TDK, Taiyo Yuden and AVX.

8
DEMO MANUAL DC3043A
Rev. 0
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 2 C2, C3 CAP., 22µF, X7S, 6.3V, 20%, 0805 TDK, C2012X7S0J226M125AC
2 2 C4, C12 CAP., 1µF, X7T, 6.3V, 20%, 0201 MURATA, GRM033D70J105ME01D
3 7 C5, C6, C23-C27 CAP., 47µF, X7S, 6.3V, 20%, 1206, NO SUBS. ALLOWED TDK, C3216X7S0J476M160AC
4 1 C9 CAP., 0.033µF, X7R, 25V, 10%, 0402 WURTH ELEKTRONIK, 885012205053
5 1 C10 CAP., 3.3pF, C0G, 50V, ±0.25pF, 0402 AVX, 04025A3R3CAT2A
6 1 C11 CAP., 330pF, X7R, 50V, 20%, 0402 AVX, 04025C331MAT2A
7 1 C20 CAP., 0.1µF, X7S, 16V, 10%, 0201 MURATA, GRM033C71C104KE14D
8 1 L1 IND., 0.1µH, PWR, SHIELDED, 20%, 25.8A, 1.8mΩ,
4.3mm × 4.3mm, XEL4030, AEC-Q200
COILCRAFT, XEL4030-101MEB
9 1 R4 RES., 0Ω, 1/16W, 0402, AEC-Q200 VISHAY, CRCW04020000Z0ED
10 1 R8 RES., 15k, 1%, 1/16W, 0402 VISHAY, CRCW040215K0FKED
11 1 U1 IC, 5V, FIXED 1V OUTPUT 10A SYNCHRONOUS STEP-DOWN
SILENT SWITCHER 2, 18-LQFN
ANALOG DEVICES, LTC3310HV-1#PBF
Additional Demo Board Circuit Components
1 2 C1, C18 CAP., 470µF, TANT. POSCAP, 6.3V, 20%, 7343, 10mΩ, TCF PANASONIC, 6TCF470MAH
2 2 C7, C15 CAP., 0.1µF, X7R, 10V, 10%, 0402, AEC-Q200 MURATA, GCM155R71A104KA55D
3 1 C8 CAP., 22µF, X7S, 6.3V, 20%, 0805 TDK, C2012X7S0J226M125AC
4 4 C13, C14, C16, C17 CAP., 10µF, X7S, 6.3V, 20%, 0603 TDK, C1608X7S0J106M080AC
5 0 C19 CAP., OPTION, 0402
6 2 C21, C22 CAP., 0.47µF, X7S, 10V, 10%, 0402, AEC-Q200 MURATA, GCM155C71A474KE36D
7 1 L2 IND., 100Ω AT 100MHz, FERRITE BEAD, 25%, 8A, 6mΩ, 1812 WURTH ELEKTRONIK, 74279226101
8 1 Q1 XSTR., MOSFET, N-CH, 40V, 14A, DPAK (TO-252) VISHAY, SUD50N04-8M8P-4GE3
9 1 R1 RES., 1M, 1%, 1/16W, 0402, AEC-Q200 VISHAY, CRCW04021M00FKED
10 1 R2 RES., 249k, 1%, 1/16W, 0402, AEC-Q200 VISHAY, CRCW0402249KFKED
11 2 R3, R9 RES., 100k, 5%, 1/16W, 0402, AEC-Q200 VISHAY, CRCW0402100KJNED
12 0 R5, R6 RES., OPTION, 0402
13 1 R7 RES., 20Ω, 1%, 1/16W, 0402, AEC-Q200 VISHAY, CRCW040220R0FKED
14 1 R10 RES., 0.05Ω, 1%, 10W, 2818, AEC-Q200, METAL, HP VISHAY, WSHP2818R0500FEA
15 1 R11 RES., 10k, 5%, 1/16W, 0402, AEC-Q200 VISHAY, CRCW040210K0JNED
Hardware: For Demo Board Only
1 10 E1-E3, E5, E12, E14-E17, E20 TEST POINT, TURRET, 0.064" MTG. HOLE, PCB 0.062" THK MILL-MAX, 2308-2-00-80-00-00-07-0
2 6 E4, E7, E10, E13, E18, E21 TEST POINT, TURRET, 0.094" MTG. HOLE, PCB 0.062" THK MILL-MAX, 2501-2-00-80-00-00-07-0
3 5 E6, E8, E9, E11, E19 CONN., BANANA JACK, FEMALE, THT, NON-INSULATED, SWAGE,
0.218"
KEYSTONE, 575-4
4 1 JP1 CONN., HDR, MALE, 1 × 3, 2mm, VERT, ST, THT WURTH ELEKTRONIK, 62000311121
5 4 MP1-MP4 STANDOFF, NYLON, SNAP-ON, 0.50" KEYSTONE, 8833
6 1 XJP1 CONN., SHUNT, FEMALE, 2 POS, 2mm WURTH ELEKTRONIK, 60800213421

9
DEMO MANUAL DC3043A
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications
subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D D C C B B A A
HI LO
1.0V 10A
2.25V - 5.5V
EN
VOUT
MODE/SYNC
GND
EN
SSTT
PGOOD
GND
VIN
GND
VIN
GND
VOUT
GND
VOUT
SNSE
GND
SNSE
VIN
SNSE
GND
SNSE
REVISION HISTORY
ECO REV DESCRIPTION APPROVED DATE
-PRODUCTION 6/10/2020
2
PCA ADDITIONAL PARTS
PULSE SKIP/SYNC
FORCED CONT
(VIN MAX)
MODE
PULSE SKIP
FORCED CONT.
R3 R4 R6
OPEN
0 or OPEN * POPULATED OR OPEN **
100k
OPEN
* IF R6 IS POPULATED R4 MUST BE OPEN. ** MODE/SYNC PIN IS CLOCK OUTPUT WHEN R6 IS POPULATED.
0
FSW = 2MHz
CONNECT BY VOUT
SENSE ONLY
VIN EMI
VIN EMI
R5
OPEN
100k
2.25V - 5.5V
NOTES: UNLESS OTHERWISE SPECIFIED 1. RESISTORS: OHMS, 0402, 1%, 1/16W 2. CAPACITORS: 0402
SG_INPUT
I_STEP
OPTIONAL TRANSIENT RESPONSE CIRCUIT
20V MAX
3.3V TO 1.0V AT 10A, 2MHz AUTOMOTIVE LOW
EMI BUCK REGULATOR IN A 2.11cm SOLUTION
JD
2
R7 IS USED FOR PHASE AND GAIN MEASURMENTS ONLY. R7 CAN BE REPLACED WITH A WIRE IN THE APPLICATION.
***
***
OPT OPT
VIN
VIN
VIN
GND_A
VIN
GND
GND_A
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
CUSTOMER NOTICE
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.
SCALE = NONE
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCA ASS'Y DWG:
www.analog.com
11
NC
MM
LTC3310-1
DC3043A 710-DC3043A_REV02
705-DC3043A_REV02
Friday, October 16, 2020DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
CUSTOMER NOTICE
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.
SCALE = NONE
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCA ASS'Y DWG:
www.analog.com
11
NC
MM
LTC3310-1
DC3043A 710-DC3043A_REV02
705-DC3043A_REV02
Friday, October 16, 2020DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG.
CUSTOMER NOTICE
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.
SCALE = NONE
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCA ASS'Y DWG:
www.analog.com
11
NC
MM
LTC3310-1
DC3043A 710-DC3043A_REV02
705-DC3043A_REV02
Friday, October 16, 2020
E19
TP2 C6 47uF X7S 1206 6.3V
JP1
E15
C16 10uF X7S 0603 6.3V
U1
LTC3310HV-1
EN
1
SW 6
VOUT 18
ITH
17
MODE/SYNC
13
RT 15
PGOOD 14
SSTT
16
VIN
3
PGND
5
AGND
2
VIN
11
VIN
12
VIN
4SW 7
SW 8 SW 9
PGND
19
PGND
10
R3
100k
E13
E5
PCB1 PCB, DC3043A REV02
MP1 STANDOFF,NYLON,SNAP-ON,0.50"
C2 22uF X7S 6.3V 0805
E9 TPB1
MP4 STANDOFF,NYLON,SNAP-ON,0.50"
+
C18 470uF
C19
OPT
R2 249k
C3 22uF X7S 6.3V 0805
+
C1 470uF
E7
E12
R8
15k
E20
C22 0.47uF X7S 10V
C7 0.1uF X7R 10V
E11
R7 20
C8 22uF X7S 6.3V 0805
C20 0.1uF
0201
X7S 16V
C9
0.033uF
X7R 25V
E2
R9
100k
5%
Q1
SUD50N04-8m8P
2
1
3
C24 47uF X7S 1206 6.3V
R11
10k 5%
TP3
TP1
MP3 STANDOFF,NYLON,SNAP-ON,0.50"
R4
0
E10
C25 47uF X7S 1206 6.3V
C11 330pF X7R 50V
E17
L1
0.1uH
XEL4030-101MEB
R5
OPT
E18
C26 47uF X7S 1206 6.3V
E14
C15
0.1uF
X7R
10V
C23 47uF X7S 1206 6.3V
LB1 LABEL
L2
100 OHMS@100MHz
C13 10uF X7S 0603 6.3V
E4 E6
E1
R10 0.05
2818 10W
TPA1
R1
1M C27
47uF X7S 1206 6.3V
C21 0.47uF X7S 10V
C14
10uF
X7S
0603 6.3V
MP2 STANDOFF,NYLON,SNAP-ON,0.50"
C4 1uF X7T 6.3V 0201
E3
C5 47uF X7S 1206 6.3V
E21
E8
C17 10uF X7S 0603 6.3V
C12 1uF X7T 6.3V 0201
E16
C10
3.3pF
C0G 50V
R6
OPT
VOUT
RT
RT
MODE
SW
MODE
VOUT VIN

10
DEMO MANUAL DC3043A
Rev. 0
 ANALOG DEVICES, INC. 2021
04/21
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.