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Table of Contents
User’s Guide
TPS563210 Step-Down Converter Evaluation Module
User's Guide
ABSTRACT
This user's guide contains information for the TPS563210 as well as support documentation for the
TPS563210EVM-663 evaluation module. Included are the performance specifications, schematic, and the bill
of materials of the TPS563210EVM-663.
Table of Contents
1 Introduction.............................................................................................................................................................................2
2 Performance Specification Summary................................................................................................................................... 3
3 Modifications...........................................................................................................................................................................4
3.1 Output Voltage Setpoint..................................................................................................................................................... 4
4 Test Setup and Results.......................................................................................................................................................... 5
4.1 Input/Output Connections.................................................................................................................................................. 5
4.2 Start-Up Procedure............................................................................................................................................................ 5
4.3 Efficiency............................................................................................................................................................................6
4.4 Load Regulation................................................................................................................................................................. 7
4.5 Line Regulation.................................................................................................................................................................. 8
4.6 Load Transient Response.................................................................................................................................................. 8
4.7 Output Voltage Ripple........................................................................................................................................................ 9
4.8 Input Voltage Ripple......................................................................................................................................................... 10
4.9 Start-Up............................................................................................................................................................................ 11
4.10 Shut-Down..................................................................................................................................................................... 12
5 Board Layout.........................................................................................................................................................................13
5.1 Layout.............................................................................................................................................................................. 13
6 Schematic, Bill of Materials, and Reference...................................................................................................................... 15
6.1 Schematic........................................................................................................................................................................ 15
6.2 Bill of Materials.................................................................................................................................................................16
6.3 Reference.........................................................................................................................................................................17
7 Revision History................................................................................................................................................................... 17
Trademarks
D-CAP2™ is a trademark of Texas Instruments.
All trademarks are the property of their respective owners.
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Introduction
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1 Introduction
The TPS563210 is a single, adaptive on-time, D-CAP2™ mode, synchronous buck converter requiring a very
low external component count. The D-CAP2 control circuit is optimized for low-ESR output capacitors such as
POSCAP, SP-CAP, or ceramic types and features fast transient response with no external compensation. The
slow start time is externally programmable and there is a dedicated Power Good (PG) pin to aid in voltage
monitoring and sequencing. The switching frequency is internally set at a nominal 650 kHz and enters Advanced
Eco-mode in light load conditions. The high-side and low-side switching MOSFETs are incorporated inside the
TPS563210 package along with the gate-drive circuitry. The low drain-to-source on resistance of the MOSFETs
allows the TPS563210 to achieve high efficiencies and helps keep the junction temperature low at high output
currents. The TPS563210 dc/dc synchronous converter is designed to provide up to a 3-A output from an input
voltage source of 4.5 V to 17 V. The output voltage range is from 0.8 V to 6.5 V. Rated input voltage and output
current ranges for the evaluation module are given in Table 1-1.
The TPS563210EVM-663 evaluation module (EVM) is a single, synchronous buck converter providing 1.05 V at
3 A from 4.5-V to 17-V input. This user’s guide describes the TPS563210EVM-663 performance.
Table 1-1. Input Voltage and Output Current Summary
2
EVM
Input Voltage Range
Output Current Range
TPS563210EVM-663
VIN = 4.5 V to 17 V
0 A to 3 A
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Performance Specification Summary
2 Performance Specification Summary
A summary of the TPS563210EVM-663 performance specifications is provided in Table 2-1. Specifications are
given for an input voltage of VIN = 12 V and an output voltage of 1.05 V, unless otherwise noted. The ambient
temperature is 25°C for all measurement, unless otherwise noted.
Table 2-1. TPS563210EVM-663 Performance Specifications Summary
Specifications
Test Conditions
Input voltage range (VIN)
Min
Typ
Max
4.5
12
17
Output voltage
Operating frequency
CH1
VIN = 12 V, IO = 3 A
Output current range
VIN = 12 V, LO = 1.5 µH
Output ripple voltage
VIN = 12 V, IO = 3 A
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V
1.05
V
650
kHz
0
Over current limit
Unit
3
A
A
20
mVPP
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Modifications
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3 Modifications
These evaluation modules are designed to provide access to the features of the TPS563210. Some
modifications can be made to this module.
3.1 Output Voltage Setpoint
To change the output voltage of the EVMs, it is necessary to change the value of resistor R1. Changing the
value of R1 can change the output voltage above 0.765 V. The value of R1 for a specific output voltage can be
calculated using Equation 1.
R1 =
R2 ´ (VOUT - 0.765 V )
(1)
0.765 V
Table 3-1 lists the R1 values for some common output voltages. Note that the values given in Table 3-1 are
standard values and not the exact value calculated using Table 3-1.
Table 3-1. Output Voltages
4
Output Voltage
(V)
R1
(kΩ)
R2
(kΩ)
L1
(µH)
Min
Typ
Max
C5 + C6 +C7
(µF)
1.0
3.09
10.0
1.5
2.2
4.7
20 - 68
1.05
3.74
10.0
1.5
2.2
4.7
20 - 68
1.2
5.76
10.0
1.5
2.2
4.7
20 - 68
1.5
9.53
10.0
1.5
2.2
4.7
20 - 68
1.8
13.7
10.0
1.5
2.2
4.7
20 - 68
2.5
22.6
10.0
2.2
3.3
4.7
20 - 68
3.3
33.2
10.0
2.2
3.3
4.7
20 - 68
5.0
54.9
10.0
3.3
4.7
4.7
20 - 68
6.5
75.0
10.0
3.3
4.7
4.7
20 - 68
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Test Setup and Results
4 Test Setup and Results
This section describes how to properly connect, set up, and use the TPS563210EVM-663. The section also
includes test results typical for the evaluation modules and efficiency, output load regulation, output line
regulation, load transient response, output voltage ripple, input voltage ripple, start-up, and switching frequency.
4.1 Input/Output Connections
The TPS563210EVM-663 is provided with input/output connectors and test points as shown in Table 4-1. A
power supply capable of supplying 3 A must be connected to J1 through a pair of 20-AWG wires. The load
must be connected to J2 through a pair of 20-AWG wires. The maximum load current capability is 3 A. Wire
lengths must be minimized to reduce losses in the wires. Test point TP1 provides a place to monitor the VIN input
voltages with TP2 providing a convenient ground reference. TP7 is used to monitor the output voltage with TP8
as the ground reference.
Table 4-1. Connection and Test Points
Reference Designator
Function
J1
VIN (see Table 1-1 for VIN range)
J2
VOUT, 1.05 V at 3-A maximum
JP1
EN control. Shunt EN to GND to disable, shunt EN to VIN to enable.
TP1
VIN positive monitor point
TP2
GND monitor test point
TP3
EN test point
TP4
Switch node test point
TP5
Test point for loop response measurements
TP6
VOUT positive monitor point
TP7
GND monitor test point
4.2 Start-Up Procedure
1. Ensure that the jumper at JP1 (Enable control) pins 1 and 2 are covered to shunt EN to GND, disabling the
output.
2. Apply appropriate VIN voltage to VIN (J1-2) and GND (J1-1). See Table 1-1 for VIN voltage range.
3. Move the jumper at JP1 (Enable control) from pins 1 and 2 (EN and GND), to pins 2 and 3 (EN and VIN)
enabling the output.
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Test Setup and Results
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4.3 Efficiency
Figure 4-1 shows the efficiency for the TPS563210EVM-663 at an ambient temperature of 25°C.
100
90
80
Efficiency (%)
70
60
50
40
30
20
10
VIN = 5V
VIN = 12V
0
0
0.5
1
1.5
Output Current (A)
2
2.5
3
D001
Figure 4-1. TPS563210EVM-663 Efficiency
Figure 4-2 shows the efficiency at light loads for the TPS563210EVM-663 at an ambient temperature of 25°C.
100
90
80
Efficiency (%)
70
60
50
40
30
20
10
0
0.001
VIN = 5V
VIN = 12V
0.002 0.003
0.005
0.01
0.02 0.03
0.05 0.07 0.1
Output Current (A)
0.2
0.3 0.4 0.5 0.7
1
2
3
4 5
D002
Figure 4-2. TPS563210EVM-663 Light Load Efficiency
6
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Test Setup and Results
4.4 Load Regulation
The load regulation for the TPS563210EVM-663 is shown in Figure 4-3 and Figure 4-4.
1
0.8
0.6
Load Regulation (%)
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
0
0.5
1
1.5
Output Current (A)
2
2.5
3
D003
Figure 4-3. TPS563210EVM-663 Load Regulation, 5 V Input
1
0.8
0.6
Load Regulation (%)
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
0
0.5
1
1.5
Output Current (A)
2
2.5
3
D003
D004
Figure 4-4. TPS563210EVM-663 Load Regulation, 12 V Input
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Test Setup and Results
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4.5 Line Regulation
The line regulation for the TPS563210EVM-663 is shown in Figure 4-5.
0.5
0.4
0.3
Line Regulation (%)
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
4
6
8
10
12
Input Voltage (V)
14
16
18
D005
Figure 4-5. TPS563210EVM-663 Line Regulation
4.6 Load Transient Response
The TPS563210EVM-663 response to load transient is shown in Figure 4-6. The current steps and slew rates
are indicated in the figures. Total peak-to-peak voltage variation is as shown.
VO = 50 mV / div (ac coupled)
IO = 1 A / div
Load step = 0.75 A - 2.25 A, slew rate = 500 mA / µsec
Time = 200 µsec / div
Figure 4-6. TPS563210EVM-663 Load Transient Response, 25% to 75% Load Step
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Test Setup and Results
4.7 Output Voltage Ripple
The TPS563210EVM-663 output voltage ripple is shown in Figure 4-7, Figure 4-8, and Figure 4-9. The output
currents are as indicated.
VO = 20 mV / div (ac coupled)
SW = 5 V / div
Time = 1 µsec / div
Figure 4-7. TPS563210EVM-663 Output Voltage Ripple, IOUT = 3 A
VO = 20 mV / div (ac coupled)
SW = 5 V / div
Time = 1 µsec / div
Figure 4-8. TPS563210EVM-663 Output Voltage Ripple, IOUT = 300 mA
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Test Setup and Results
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VO = 20 mV / div (ac coupled)
SW = 5 V / div
Time = 5 msec / div
Figure 4-9. TPS563210EVM-663 Output Voltage Ripple, IOUT = 0 mA
4.8 Input Voltage Ripple
The TPS563210EVM-663 input voltage ripple is shown in Figure 4-10. The output current is as indicated.
VI = 50 mV / div (ac coupled)
SW = 5 V / div
Time = 1 µsec / div
Figure 4-10. TPS563210EVM-663 Input Voltage Ripple, IOUT = 3 A
10
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Test Setup and Results
4.9 Start-Up
The TPS563210EVM-663 start-up waveform relative to VIN is shown in Figure 4-11. Load = 1 Ω resistive.
VI = 10 V / div
SS = 5 V / div
VO = 500 mV / div
PG = 1 V / div
Time = 1 msec / div
Figure 4-11. TPS563210EVM-663 Start-Up Relative to VIN
The TPS563210EVM-663 start-up waveform relative to enable (EN) is shown in Figure 4-12. Load = 1 Ω
resistive.
EN = 10 V / div
SS = 5 V / div
VO = 500 mV / div
PG = 1 V / div
Time = 1 msec / div
Figure 4-12. TPS563210EVM-663 Start-Up Relative to EN
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Test Setup and Results
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4.10 Shut-Down
The TPS563210EVM-663 shut-down waveform relative to VIN is shown in Figure 4-13. Load = 1 Ω resistive.
VI = 10 V / div
SS = 5 V / div
VO = 500 mV / div
PG = 1 V / div
Time = 5 msec / div
Figure 4-13. TPS563210EVM-663 Shut-Down Relative to VIN
The TPS563210EVM-663 shut-down waveform relative to EN is shown in Figure 4-14. Load = 1 Ω resistive.
EN = 10 V / div
SS = 5 V / div
VO = 500 mV / div
PG = 1 V / div
Time = 5 msec / div
Figure 4-14. TPS563210EVM-663 Shut-Down Relative to EN
12
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Board Layout
5 Board Layout
This section provides a description of the TPS563210EVM-663, board layout, and layer illustrations.
5.1 Layout
The board layout for the TPS563210EVM-663 is shown in Figure 5-1, Figure 5-2, and Figure 5-3. The top layer
contains the main power traces for VIN, VOUT, and ground. Also on the top layer are connections for the pins
of the TPS563210 and a large area filled with ground. Most of the signal traces are also located on the top side.
The input decoupling capacitors, C1, C2, and C3 are located as close to the IC as possible. The input and output
connectors, test points, and all of the components are located on the top side. The bottom layer is a ground
plane along with the switching node copper fill, signal ground copper fill and the feed back trace from the point of
regulation to the top of the resistor divider network.
Figure 5-1. Top Assembly
Figure 5-2. Top Layer
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Board Layout
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Figure 5-3. Bottom Layer
14
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Schematic, Bill of Materials, and Reference
6 Schematic, Bill of Materials, and Reference
6.1 Schematic
Figure 6-1 is the schematic for the TPS563210EVM-663.
U1
TPS563210DDF
TP1
J1
TP4
VIN = 4.5 - 17 V
L1
1.5uH
3
VIN
VBST
EN
SW
TP7
VOUT = 1.05 V
C5
J2
8
0.1µF
C1
0.1µF
TP2
GND
C2
10µF
R4
10.0k
C3
10µF
7
PG
SH-JP1
JP1
TP3
5
3
2
1
SS
VFB
GND
TP5
2
JP2
C6
22µF
SH-JP2
R5
4
C7
22µF
C8
22µF
R3 TP8
0
TP6
100k
6
R1
3.74k GND
GND
1
C4
8200pF
R2
10.0k
GND
GND
GND
GND
Figure 6-1. TPS563210EVM-663 Schematic Diagram
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Schematic, Bill of Materials, and Reference
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6.2 Bill of Materials
Table 6-1 lists the BOM for the EVM.
Table 6-1. Bill of Materials
Designator
Quantity
Part Number
Manufacturer
!PCB1
1
C1, C5
2
0.1uF
CAP, CERM, 0.1uF, 25V, +/-10%, X5R,
0603
0603
PWR663
Any
GRM188R61E104KA01D
MuRata
C2, C3
2
10uF
CAP, CERM, 10uF, 25V, +/-10%, X5R,
1210
1210
GRM32DR61E106KA12L
MuRata
C4
1
8200pF
CAP, CERM, 8200pF, 25V, +/-10%, X7R, 0603
0603
GRM188R71E822KA01D
MuRata
C6, C7, C8
3
22uF
CAP, CERM, 22uF, 10V, +/-10%, X7R,
1206
GRM31CR71A226KE15L
MuRata
J1, J2
2
Terminal Block, 6A, 3.5mm Pitch, 2-Pos, 7.0x8.2x6.5mm
TH
ED555/2DS
On-Shore Technology
JP1
JP2
1
Header, 100mil, 3x1, Tin, TH
Header, 3 PIN, 100mil, Tin
PEC03SAAN
Sullins Connector Solutions
1
Header, 100mil, 2x1, Tin, TH
Header, 2 PIN, 100mil, Tin
PEC02SAAN
Sullins Connector Solutions
L1
1
Inductor, Shielded Drum Core,
Superflux, 1.5uH, 11A, 0.0078 ohm,
SMD
WE-HC4
744311150
Wurth Elektronik eiSos
LBL1
1
Thermal Transfer Printable Labels,
1.250" W x 0.250" H - 10,000 per roll
PCB Label 1.25"H x 0.250"W
THT-13-457-10
Brady
R1
1
R2, R4
2
3.74k
RES, 3.74k ohm, 1%, 0.1W, 0603
0603
CRCW06033K74FKEA
Vishay-Dale
10.0k
RES, 10.0k ohm, 1%, 0.1W, 0603
0603
CRCW060310K0FKEA
Vishay-Dale
R3
R5
1
0
RES, 0 ohm, 5%, 0.1W, 0603
0603
ERJ-3GEY0R00V
Panasonic
1
100k
RES, 100k ohm, 1%, 0.1W, 0603
0603
CRCW0603100KFKEA
Vishay-Dale
SH-JP1, SH-JP2
2
1x2
Shunt, 100mil, Gold plated, Black
Shunt
969102-0000-DA
3M
TP1, TP7
2
Red
Test Point, Miniature, Red, TH
Red Miniature Testpoint
5000
Keystone
TP2, TP8
2
Black
Test Point, Miniature, Black, TH
Black Miniature Testpoint
5001
Keystone
TP3, TP5, TP6
3
White
Test Point, Miniature, White, TH
White Miniature Testpoint
5002
Keystone
TP4
1
Yellow
Test Point, Miniature, Yellow, TH
Yellow Miniature Testpoint
5004
Keystone
U1
1
TPS563210 4.5V to 17 V Input,
Synchronous Step-Down Voltage
Regulator DDF0008A
DDF0008A
TPS563210DDF
Texas Instruments
16
Value
Description
Package Reference
Printed Circuit Board
1.5uH
1206
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Schematic, Bill of Materials, and Reference
6.3 Reference
1. TPS56x210 4.5 V to 17 V Input, 2-A/3-A Synchronous Step-Down Voltage Regulator in SOT-23 data sheet
(SLVSCM6)
7 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision * (October 2014) to Revision A (July 2021)
Page
• Updated the numbering format for tables, figures, and cross-references throughout the document. ................2
• Updated user's guide title................................................................................................................................... 2
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