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1 Introduction
The TPS56C20 is a synchronous DC-DC converter. The TPS56C20 is a buck converter whose output voltage
can be adjusted using the feedback resistor divider network or using VID commands from an I2C interface bus.
It is a single, adaptive on-time, D-CAP2
™
mode converter requiring a very low external component count. The
D-CAP2 control circuit is optimized for low-ESR output capacitors such as POSCAP or SP-CAP, or ceramic
types. The D-CAP2 control circuit features fast transient response with no external compensation. The reference
design internally sets the switching frequency at a nominal 500 kHz. The design integrates the high- and
low-side switching MOSFETs and the gate drive circuitry. The low drain-to-source on resistance of the MOSFETs
allows the TPS56C20 to achieve high efficiencies and helps keep the junction temperature low at high output
currents. The TPS56C20 DC/DC synchronous converter provides up to a 12-A output from an input voltage
source of 4.5 V to 17 V. The output voltage range is from 0.6 V to 1.87 V. The rated input voltage and output
current range for the evaluation module are given in
.
The TPS56C20EVM-614 evaluation module is a single, synchronous buck converter providing 1.1 V at 12 A
from 4.5-V to 17-V input.
Table 1-1. Input Voltage and Output Current Summary
EVM
Input Voltage Range
Output Current Range
TPS56C20EVM-614
VIN = 4.5V to 17V
0A to 12A
Introduction
SBAU227A – MARCH 2014 – REVISED JUNE 2021
TPS56C20 Buck Converter Evaluation Module User's Guide
3
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