Texas Instruments SWIFT TPS561201EVM-896 1-A, User Manual, Page: 2 / 18

Introduction
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2 SLVUB34 – April 2017
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Copyright © 2017, Texas Instruments Incorporated
TPS561201EVM-896 1-A, SWIFT™ Regulator Evaluation Module
16 Bottom Layer
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17 TPS561201EVM-896 Schematic Diagram
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List of Tables
1 Input Voltage and Output Current Summary
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2 TPS561201EVM-896 Performance Specifications Summary
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3 Output Voltages
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4 Connection and Test Points
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5 Bill of Materials
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Trademarks
SWIFT, D-CAP2 are trademarks of Texas Instruments.
All other trademarks are the property of their respective owners.
1 Introduction
The TPS561201 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 switching frequency is internally set at a nominal 580 kHz and enters plus skip mode
in light load conditions. The high-side and low-side switching MOSFETs are incorporated inside the
TPS561201 package along with the gate-drive circuitry. The low drain-to-source on resistance of the
MOSFETs allows the TPS561201 to achieve high efficiencies and helps keep the junction temperature low
at high output currents. The TPS561201 dc/dc synchronous converter is designed to provide up to a 1-A
output from an input voltage source of 4.5 V to 17 V. The output voltage range is from 0.768 V to 7 V.
Rated input voltage and output current ranges for the evaluation module are given in
Table 1 .
The TPS561201EVM-896 evaluation module (EVM) is a single, synchronous buck converter providing
1.05 V at 1 A from 4.5-V to 17-V input. This user’s guide describes the TPS561201EVM-896 performance.
Table 1. Input Voltage and Output Current Summary
EVM Input Voltage (V
IN
) Range Output Current (I
OUT
) Range
TPS561201EVM-896 4.5 V to 17 V 0 A to 1 A
2 Performance Specification Summary
A summary of the TPS561201EVM-896 performance specifications is provided in Table 2 . Specifications
are given for an input voltage of V
IN
= 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. TPS561201EVM-896 Performance Specifications Summary
Specifications Test Conditions MIN TYP MAX Unit
V
IN
Input voltage range 4.5 12 17 V
CH1
Output voltage 1.05 V
Operating frequency V
IN
= 12 V, I
OUT
= 1 A 580 kHz
Output current range 0 2 A
Overcurrent limit V
IN
= 12 V, L = 2.2 µH 1.6 A
Output ripple voltage V
IN
= 12 V, I
OUT
= 1 A 20 mV
PP