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Table of Contents
User’s Guide
TPS53127 Buck Controller Evaluation Module User's
Guide
ABSTRACT
The TPS53127EVM-614 dual-output buck converter evaluation module presents an easy-to-use reference
design for a common dual-output power supply using the TPS53127 controller in cost-sensitive applications.
Table of Contents
1 Introduction.............................................................................................................................................................................3
1.1 Description......................................................................................................................................................................... 3
1.2 Application..........................................................................................................................................................................3
1.3 Features............................................................................................................................................................................. 3
2 Electrical Performance Specifications................................................................................................................................. 3
3 TPS53127EVM-614 Schematic...............................................................................................................................................4
4 Connector and Test Point Descriptions................................................................................................................................5
4.1 Enable Switches (SW1 and SW2)......................................................................................................................................5
4.2 Switching Frequency Select Switch (SW3)........................................................................................................................ 5
4.3 Test Point Descriptions.......................................................................................................................................................5
5 Test Setup................................................................................................................................................................................7
5.1 Equipment.......................................................................................................................................................................... 7
5.2 Equipment Setup................................................................................................................................................................7
5.3 Start-Up/Shutdown Procedure........................................................................................................................................... 9
5.4 Output Ripple Voltage Measurement Procedure................................................................................................................9
5.5 Equipment Shutdown......................................................................................................................................................... 9
6 TPS53127EVM-614 Test Data............................................................................................................................................... 10
6.1 Efficiency..........................................................................................................................................................................10
6.2 Line and Load Regulation.................................................................................................................................................11
6.3 Output Voltage Ripple and Switching Node Waveforms.................................................................................................. 12
6.4 Switch Node..................................................................................................................................................................... 13
7 TPS53127EVM-614 EVM Assembly Drawings and Layout................................................................................................14
8 Bill of Materials..................................................................................................................................................................... 17
9 Revision History................................................................................................................................................................... 17
List of Figures
Figure 3-1. TPS53127EVM-614 Schematic.................................................................................................................................4
Figure 4-1. Tip and Barrel Measurement for Output Voltage Ripple............................................................................................6
Figure 5-1. TPS53127EVM-614 Recommended Test Setup....................................................................................................... 8
Figure 6-1. Efficiency vs Load (VIN = 8 V–22 V, VOUT1 = 1.05 V, IOUT1 = 0 A–4 A)....................................................................10
Figure 6-2. Efficiency vs Load (VIN = 8 V–22 V, VOUT2 = 1.8 V, IOUT2 = 0 A–4 A)......................................................................10
Figure 6-3. Output Voltage vs Load (VIN = 8 V–22 V, VOUT1 = 1.05 V, IOUT1 = 0 A–4 A)........................................................... 11
Figure 6-4. Output Voltage vs Load (VIN = 8 V–22 V, VOUT2 = 1.05 V, IOUT2 = 0 A–4 A)........................................................... 11
Figure 6-5. Output Voltage Ripple (VIN = 12 V, VOUT1 = 1.05 V, IOUT1 = 4 A)............................................................................ 12
Figure 6-6. Output Voltage Ripple (VIN = 12 V, VOUT2 = 1.8 V, IOUT2 = 4 A).............................................................................. 12
Figure 6-7. Switching Waveform (VIN = 12 V, VOUT1 = 1.05 V, IOUT1 = 4 A)...............................................................................13
Figure 6-8. Switching Waveform (VIN = 12 V, VOUT2 = 1.8 V, IOUT2 = 4 A).................................................................................13
Figure 7-1. Top Assembly.......................................................................................................................................................... 14
Figure 7-2. Bottom Assembly.................................................................................................................................................... 14
Figure 7-3. Top Layer.................................................................................................................................................................15
Figure 7-4. Bottom Layer........................................................................................................................................................... 15
Figure 7-5. Internal Layer 1....................................................................................................................................................... 16
Figure 7-6. Internal Layer 2....................................................................................................................................................... 16
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Trademarks
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List of Tables
Table 2-1. TPS53127EVM-614 Electrical and Performance Specifications.................................................................................3
Table 4-1. TPS53127EVM-614 Test Points Description.............................................................................................................. 5
Table 8-1. TPS53127EVM-614 Bill of Materials.........................................................................................................................17
Trademarks
D-CAP2™ is a trademark of Texas Instruments.
All trademarks are the property of their respective owners.
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Introduction
1 Introduction
1.1 Description
The TPS53127EVM-614 dual output buck evaluation board provides the user with a convenient way to evaluate
the TPS53127 dual D-CAP2™ mode control buck controller in a realistic cost-sensitive application. Providing
both a low “core-type” 1.05-V and “I/O type” 1.8-V output at up to 4 A from a loosely regulated 12-V (8 V–22 V)
source, the TPS53127EVM-614 includes switches and test points to assist a user in evaluating the performance
of the TPS53127 controller in their application.
1.2 Application
•
•
•
•
Digital television
Set-top box
DSL and cable modems
Cost-sensitive digital consumer products
1.3 Features
•
•
•
•
•
8-V to 22-V input
1.05-V and 1.8-V output
Up to 4 A per channel output
700-kHz pseudo-fixed frequency D-CAP2 mode control
Independent enable switches for power-on/power-off testing
2 Electrical Performance Specifications
Table 2-1. TPS53127EVM-614 Electrical and Performance Specifications
Parameter
Notes and Conditions
MIN
TYP
MAX UNIT
INPUT CHARACTERISTICS
VIN
Input voltage
IIN
Input current
VIN = 12 V, IOUT1 = 4 A, IOUT2 = 4 A
No load input current
VIN = 12 V, IOUT = 0 A
VIN_UVLO Input UVLO
IOUT = 4 A
8
12
22
V
—
1.2
1.5
A
—
20
35
mA
4.0
4.2
4.5
V
1.03
1.05
1.07
V
OUTPUT CHARACTERISTICS
VOUT1
Output voltage 1
VIN = 12 V, IOUT1 = 2 A
Line regulation
VIN = 8 V to 22 V
—
—
1%
Load regulation
IOUT1 = 0 A to 4 A
—
—
1%
VOUT1_rip Output voltage ripple
VIN = 12 V, IOUT2 = 4 A
—
-
IOUT1
Output current 1
VIN = 8 V to 22 V
VOUT2
Output voltage 2
VIN = 12 V, IOUT2 = 2 A
1.78
Line regulation
VIN = 8 V to 22 V
—
Load regulation
0
4
A
1.80
1.82
V
—
1%
1%
IOUT2 = 0 A to 4 A
—
—
VOUT2_rip Output voltage ripple
VIN = 12 V, IOUT2 = 4 A
—
—
IOUT2
VIN = 8 V to 22 V
Output current 2
30 mVpp
0
30 mVpp
4
A
SYSTEMS CHARACTERISTICS
FSW
Switching frequency
350
700
800
ηpk
Peak efficiency
VIN = 12 V
—
85%
—
η
Full load efficiency
VIN = 12 V, IOUT1 = 4 A
—
83%
—
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kHz
3
TPS53127EVM-614 Schematic
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+
+
+
3 TPS53127EVM-614 Schematic
For reference only. See Table 8-1 for specific values.
Figure 3-1. TPS53127EVM-614 Schematic
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Connector and Test Point Descriptions
4 Connector and Test Point Descriptions
4.1 Enable Switches (SW1 and SW2)
The TPS53127EVM-614 includes independent enable switches for each of the two outputs. When the switch
is in the DIS position, the channel is disabled and discharged per the internal discharge characteristics of the
TPS53127.
To enable VOUT1, place SW1 in the EN position.
To enable VOUT2, place SW2 in the EN position.
4.2 Switching Frequency Select Switch (SW3)
The TPS53127EVM-614 does not populate SW3. When using the TPS53127EVM-614 to evaluate the
TPS53126 controller in the TSSOP package, SW3 can be populated to allow selection of the TPS53126
switching frequency between 350 kHz and 700 kHz.
4.3 Test Point Descriptions
Table 4-1 lists the test points, their labels, uses, and where additional information is located.
Table 4-1. TPS53127EVM-614 Test Points Description
Test Point
Label
Use
Section
TP1
TEST1
Monitor Channel 1 Soft-Start Voltage
Section 4.3.4
TP2
TEST2
Monitor Channel 2 Soft-Start Voltage
Section 4.3.4
TP3
GND
Ground for Input Voltage
Section 4.3.1
TP4
GND
Ground for Channel 1 Output Voltage
Section 4.3.2
TP5
SW1
Monitor Switching Node for Channel 1
Section 4.3.5
TP6
GND
Ground for Channel 2 Output Voltage
Section 4.3.3
TP7
VO2
Monitor Output Voltage for Channel 2
Section 4.3.3
TP8
VO1
Monitor Output Voltage for Channel 1
Section 4.3.2
TP9
VIN
Monitor Input Voltage
Section 4.3.1
TP10
VREG5
Monitor Output of VREG5 Regulator
Section 4.3.6
TP11
SW2
Monitor Switching Node for Channel 2
Section 4.3.5
CN1
VOUT1
Monitor Output Voltage for Channel 1
Section 4.3.2
CN2
VOUT2
Monitor Output Voltage for Channel 2
Section 4.3.3
4.3.1 Input Voltage Monitoring (TP3 and TP9)
The TPS53127EVM-614 provides two test points for measuring the voltage applied to the module. This allows
the user to measure the actual module voltage without losses from input cables and connectors. All input voltage
measurements should be made between TP9 and TP3. To use TP9 and TP3, connect a voltmeter positive
terminal to TP9 and negative terminal to TP3.
4.3.2 Channel 1 Output Voltage Monitoring (TP4 and TP8)
The TPS53127EVM-614 provides two test points for measuring the voltage generated at the VO1 output by
the module. This allows the user to measure the actual output voltage without losses from output cables and
connectors. All DC output voltage measurements should be made between TP8 and TP4. To use TP8 and TP4,
connect a voltmeter positive terminal to TP8 and negative terminal to TP4.
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Connector and Test Point Descriptions
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Metal Ground Barrel
Probe Tip
TP8
TP4
Figure 4-1. Tip and Barrel Measurement for Output Voltage Ripple
4.3.3 Channel 2 Output Voltage Monitoring (TP6 and TP7)
The TPS53127EVM-614 provides two test points for measuring the voltage generated at the VO1 output by
the module. This allows the user to measure the actual output voltage without losses from output cables and
connectors. All DC output voltage measurements should be made between TP7 and TP6. To use TP7 and TP6,
connect a voltmeter positive terminal to TP7 and negative terminal to TP6.
4.3.4 Soft-Start Voltage Monitoring (TP1, TP2, and TP3)
The TPS53127EVM-614 provides two test points for measuring the soft-start ramp voltages. TP1 monitors the
soft-start ramp of Channel 1. TP2 monitors the soft-start ramp of Channel 2. To use TP1 or TP2, connect an
oscilloscope probe between TP1 or TP2 and TP3.
4.3.5 Switching Node Monitoring (TP3, TP5, and TP11)
The TPS53127EVM-614 provides two test points for measuring the switching node waveform voltages. TP5
monitors the switching node of Channel 1. TP2 monitors the switching node of Channel 2. To use TP5 or TP11,
connect an oscilloscope probe between TP5 or TP11 and TP3.
4.3.6 5-V Regulator Output Monitoring (TP3 and TP10)
The TPS53127EVM-614 provides a test point for measuring the output of the internal 5-V regulator. TP10
monitors the output voltage of the internal 5-V regulator. To use TP10, connect a voltmeter positive terminal to
TP10 and negative terminal to TP3.
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Test Setup
5 Test Setup
5.1 Equipment
5.1.1 Voltage Source
VIN
The input voltage source (VVIN) is a 0-V to 25-V variable DC source capable of supplying 3.0 ADC minimum.
5.1.2 Meters
A1: 0 ADC–4 ADC, Ammeter
V1: VIN, 0-V to 22-V voltmeter
V2: VOUT1, 0-V to 2-V voltmeter
V3: VOUT2, 0-V to 2-V voltmeter
5.1.3 Loads
LOAD1: The output load is an electronic load set for constant current mode capable of 0 ADC to 4 ADC at 1.05
VDC.
LOAD2: The output load is an electronic load set for constant current mode capable of 0 ADC to 4 ADC at 1.80
VDC.
5.1.4 Oscilloscope
Oscilloscope
The oscilloscope is an analog or digital oscilloscope set for AC-coupled measurement with 20-MHz bandwidth
limiting. Use 20-mV/division vertical resolution and 1.0-µs/division horizontal resolution for output ripple voltage
test. Set cursors at +20 mV and –20 mV.
Probe
One oscilloscope probe is a Tektronix P6138 or equivalent oscilloscope probe with exposed conductive ground
barrels.
5.1.5 Recommended Wire Gauge
VIN to J3
The connection between the source voltage, VVIN, and J1 of the TPS53127EVM-614 can carry as much as 2.0
ADC. The minimum recommended wire size is AWG #16 with the total length of wire less than two feet (1-foot
input, 1-foot return).
J1 to LOAD1 and J2 to LOAD2
The connection between J1 and LOAD1 and J2 and LOAD2 of the TPS53127EVM-614 can carry as much as
4 ADC each. The minimum recommended wire size is AWG #14, with the total length of wire less than two feet
(1-foot input, 1-foot return).
5.1.6 Other
FAN
The TPS53127EVM-614 evaluation module includes components that can get hot to the touch. Because this
EVM is not enclosed to allow probing of circuit nodes, a small fan capable of 200 lfm–400 lfm is required to
reduce component temperatures when operating.
5.2 Equipment Setup
Figure 5-1 shows the recommended basic test setup to evaluate the TPS53127EVM-614. Note that although the
return for J3 and J1 and JP2 are the same system ground, the connections should remain separate as shown in
Figure 5-1.
5.2.1 Procedure
1. Working at an ESD workstation, make sure that any wrist straps, bootstraps, or mats are connected
referencing the user to earth ground before power is applied to the EVM. An electrostatic smock and safety
glasses should also be worn.
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Test Setup
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2. Prior to connecting the DC input source, VIN, it is advisable to limit the source current from VIN to 3.0 A
maximum. Make sure VIN is initially set to 0 V and connected as shown in Figure 5-1.
3. Verify SW1 and SW2 are in the desired position.
4. Place a fan as shown in Figure 5-1. Turn it on, making sure that air is flowing across the EVM.
5.2.2 Diagram
FAN
+
V1
-
+
-
+
+
A1
-
+
LOAD1
1.05V @
4A
V2
LOAD2
1.8V @
4A
V3
-
+
VVIN
Figure 5-1. TPS53127EVM-614 Recommended Test Setup
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Test Setup
5.3 Start-Up/Shutdown Procedure
1.
2.
3.
4.
5.
6.
7.
Increase VIN from 0 V to 12 VDC.
Vary LOAD1 from 0 ADC–4 ADC.
Vary LOAD2 from 0 ADC–4 ADC.
Vary VIN from 8 VDC to 22 VDC.
Decrease VIN to 0 VDC.
Decrease LOAD1 to 0 A.
Decrease LOAD2 to 0 A.
5.4 Output Ripple Voltage Measurement Procedure
1.
2.
3.
4.
5.
6.
7.
8.
9.
Increase VIN from 0 V to 12 VDC.
Adjust LOAD1 to desired load between 0 ADC and 4 ADC.
Adjust LOAD2 to desired load between 0 ADC and 4 ADC.
Adjust VIN to desired load between 8 VDC and 22 VDC.
Connect an oscilloscope probe to CN1 or CN2 shown in Figure 5-1.
Measure output ripple.
Decrease VIN to 0 VDC.
Decrease LOAD1 to 0 A.
Decrease LOAD2 to 0 A.
5.5 Equipment Shutdown
1.
2.
3.
4.
5.
Shut down the oscilloscope.
Shut down VIN.
Shut down LOAD1.
Shut down LOAD2.
Shut down FAN.
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6 TPS53127EVM-614 Test Data
Figure 6-1 through Figure 6-8 present typical performance curves for the TPS53127EVM-614. Since actual
performance data can be affected by measurement techniques and environmental variables, these curves are
presented for reference and may differ from actual field measurements.
6.1 Efficiency
100
VI = 8 V
VI = 12 V
90
80
VI = 22 V
h - Efficiency - %
70
60
50
40
30
VI = 8 V-22 V,
VOUT1 = 1.05 V,
IOUT1 = 0 A-4 A
20
10
0
0
0.5
1
1.5
2
2.5
ILOAD - Load Current - A
3
3.5
4
Figure 6-1. Efficiency vs Load (VIN = 8 V–22 V, VOUT1 = 1.05 V, IOUT1 = 0 A–4 A)
100
VI = 8 V
90
80
VI = 12 V
h - Efficiency - %
70
VI = 22 V
60
50
40
30
20
VI = 8 V-22 V,
VOUT2 = 1.80 V,
IOUT2 = 0 A-4 A
10
0
0
0.5
1
1.5
2
2.5
ILOAD - Load Current - A
3
3.5
4
Figure 6-2. Efficiency vs Load (VIN = 8 V–22 V, VOUT2 = 1.8 V, IOUT2 = 0 A–4 A)
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TPS53127EVM-614 Test Data
6.2 Line and Load Regulation
1.054
VI = 8 V-22 V,
VOUT1 = 1.05 V,
IOUT1 = 0 A-4 A
VI = 22 V
1.052
VO - Output Voltage - V
1.05
1.048
1.046
VI = 12 V
1.044
1.042
VI = 8 V
1.04
1.038
1.036
0
1
2
ILOAD - Load Current - A
3
4
Figure 6-3. Output Voltage vs Load (VIN = 8 V–22 V, VOUT1 = 1.05 V, IOUT1 = 0 A–4 A)
1.83
VI = 22 V
1.825
VO - Output Voltage - V
VI = 8 V-22 V,
VOUT1 = 1.0 V,
IOUT1 = 0 A-4 A
1.82
1.815
VI = 12 V
1.81
1.805
VI = 8 V
1.8
1.795
0
0.5
1
1.5
2
2.5
3
3.5
4
ILOAD - Load Current - A
Figure 6-4. Output Voltage vs Load (VIN = 8 V–22 V, VOUT2 = 1.05 V, IOUT2 = 0 A–4 A)
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6.3 Output Voltage Ripple and Switching Node Waveforms
TPS53127EVM-614
Test condition: 12 Vin, 105 V/4 A
Output Ripple
Figure 6-5. Output Voltage Ripple (VIN = 12 V, VOUT1 = 1.05 V, IOUT1 = 4 A)
TPS53127EVM-614
Test condition: 12 Vin, 1.8 V/4 A
Output Ripple
Figure 6-6. Output Voltage Ripple (VIN = 12 V, VOUT2 = 1.8 V, IOUT2 = 4 A)
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TPS53127EVM-614 Test Data
6.4 Switch Node
TPS53127EVM-614
Test condition: 12 Vin, 1.05 V/4 A
SwitchNode
Figure 6-7. Switching Waveform (VIN = 12 V, VOUT1 = 1.05 V, IOUT1 = 4 A)
TPS53127EVM-614
Test condition: 12 Vin, 1.8 V/4 A
Switch Node
Figure 6-8. Switching Waveform (VIN = 12 V, VOUT2 = 1.8 V, IOUT2 = 4 A)
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TPS53127EVM-614 EVM Assembly Drawings and Layout
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7 TPS53127EVM-614 EVM Assembly Drawings and Layout
Figure 7-1 through Figure 7-5 show the design of the TPS53127EVM-614 printed circuit board. The EVM has
been designed using a 4-layer, 2-oz copper-clad circuit board 3.5 in 2.7 to allow the user to easily view, probe,
and evaluate the TPS53127 control IC in a practical application. Moving components to both sides of the PCB or
using additional internal layers can offer additional size reduction for space constrained systems.
Figure 7-1. Top Assembly
Figure 7-2. Bottom Assembly
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TPS53127EVM-614 EVM Assembly Drawings and Layout
Figure 7-3. Top Layer
Figure 7-4. Bottom Layer
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TPS53127EVM-614 EVM Assembly Drawings and Layout
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Figure 7-5. Internal Layer 1
Figure 7-6. Internal Layer 2
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Bill of Materials
8 Bill of Materials
Table 8-1 contains the bill of materials for the TPS53127EVM-614. The reference designators reference the
schematic in Figure 3-1 and assembly locations in Figure 7-1. Components with a quantity 0 listed are not
populated on the PCB but are provided for reference.
Table 8-1. TPS53127EVM-614 Bill of Materials
Count
RefDes
Value
Description
Size
Part Number
MFR
0
C1
Capacitor, Aluminum, 25 V, 20%
0.328 × 0.390 inch
Std
Std
0
C12, C19, C20,
C21
Capacitor, Ceramic
0603
Std
Std
1
C15
4.7 µF
Capacitor, Ceramic, 10 V, X5R, 20%
0805
Std
Std
1
C16
1 µF
Capacitor, Ceramic, 16 V, X5R, 20%
0805
Std
Std
4
C2, C3, C4, C5
10 µF
Capacitor, Ceramic, 25 V, X5R, 20%
1210
Std
Std
2
C22, C23
4700 pF
Capacitor, Ceramic, Low Inductance, 16 V,
X7R, 20%
0603
Std
Std
0
C24, C25
Capacitor, Ceramic, 25 V, X7R, 20%
0603
Std
Std
2
C6, C11
0.1 µF
Capacitor, Ceramic, 50 V, X5R, 10%
0603
Std
Std
6
C7, C9, C10,
C14, C17, C18
47 µF
Capacitor, Ceramic, 6.3 V, X5R, 20%
1206
Std
Std
0
C8, C13
330 µF
Capacitor, PXE, 4.0 V, 15 mΩ, 20%
7343 (D)
APXE4R0ARA331MF61G
NIPPON CHEMICON
2
D1, D2
BAT54XV2T1G
Diode, Schottky, 200 mA, 30 V
SOD523
BAT54XV2T1G
On Semi
3
J1, J2, J3
ED120/2DS
Terminal Block, 2-pin, 15-A, 5.1 mm
0.40 × 0.35 inch
ED120/2DS
OST
2
L1, L2
1.5 µH
Inductor, SMT, 11 A, 9.7 mΩ
0.256 × 0.280 inch
SPM6530T-1R5M100
TDK
4
Q1, Q2, Q3, Q4
CSD17507Q5A
MOSFET, N-Chan, 30 V, 65 A, 11.8 mΩ
QFN-8 POWER
CSD17507Q5A
TI
1
R1
1.62 k
Resistor, Chip, 1/16W, 1%
0603
Std
Std
4
R10, R4, R6, R8
10.0 k
Resistor, Chip, 1/16W, 1%
0603
Std
Std
2
R11, R12
5.11
Resistor, Chip, 1/16W, 1%
0603
Std
Std
1
R13
432
Resistor, Chip, 1/16W, 1%
0603
Std
Std
0
R14, R15
Resistor, Chip, 1/8W, 5%
0603
Std
Std
2
R17, R18
Resistor, Chip, 1/16W, 1%
0603
Std
Std
0
R2, R7, R9
Resistor, Chip, 1/16W, 1%
0603
Std
Std
1
R3
3.32 k
Resistor, Chip, 1/16W, 1%
0603
Std
Std
1
R5
12.1 k
Resistor, Chip, 1/16W, 1%
0603
Std
Std
2
SW1, SW2
G12AP-RO
Switch, ON-ON Mini Toggle
0.28 × 0.18 inch
G12AP-RO
Nikkai
0
SW3
G12AP-RO
Switch, ON-ON Mini Toggle
0.28 × 0.18 inch
G12AP-RO
Nikkai
4
TP1, TP2, TP5,
TP11
5012
Test Point, White, Thru Hole
0.125 × 0.125 inch
5012
Keystone
1
TP10
5013
Test Point, Orange, Thru Hole
0.125 × 0.125 inch
5013
Keystone
3
TP3, TP4, TP6
5011
Test Point, Black, Thru Hole
0.125 × 0.125 inch
5011
Keystone
2
TP7, TP8
5014
Test Point, Yellow, Thru Hole
0.125 × 0.125 inch
5014
Keystone
1
TP9
5010
Test Point, Red, Thru Hole
0.125 × 0.125 inch
5010
Keystone
1
U1
TPS53127PW
IC, Dual Synchronous Step-Down Controller
For Low-Voltage Power Rails
TSSOP
TPS53127PW
TI
1
–
PCB, 2.70" × 3.50" × 0.063" FR-4
2.7 × 3.5 inch
HPA614
Any
2.00
Notes: 1. These assemblies are ESD sensitive, ESD precautions shall be observed.
2. These assemblies must be clean and free from flux and all contaminants. Use of no clean flux is not acceptable.
3. These assemblies must comply with workmanship standards IPC-A-610 Class 2.
4. Ref designators marked with an asterisk ('**') cannot be substituted. All other components can be substituted with equivalent MFG's components.
9 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision * (February 2011) to Revision A (January 2022)
Page
• Updated the numbering format for tables, figures, and cross-references throughout the document. ................3
• Updated the user's guide title............................................................................................................................. 3
SLVU434A – FEBRUARY 2011 – REVISED JANUARY 2022
TPS53127 Buck Controller Evaluation Module User's Guide
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17
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