2

SW

ZC

XCON

PWM

Control Logic

+

+

+

UVP

OVP

3

VIN

Ton

One-Shot

8

VBST

+

6

VFB

OCL

+

+

Soft Start

7

EN

HS

LS

1

GND

SS

Voltage

Reference

Ref

Hiccup

OCL

threshold

Regulator

UVLO

VREG5

VREG5

TSD

5

SS

4

PG

+

TPS562210, TPS563210

www.ti.com

SLVSCM6A – FEBRUARY 2015 – REVISED AUGUST 2015

8 Detailed Description

8.1 Overview

The TPS562210 and TPS563210 are 2-A, 3-A synchronous step-down converters. The proprietary D-CAP2™

mode control supports low ESR output capacitors such as specialty polymer capacitors and multi-layer ceramic

capacitors without complex external compensation circuits. The fast transient response of D-CAP2™ mode

control can reduce the output capacitance required to meet a specific level of performance.

8.2 Functional Block Diagram

Figure 17. TPS562210

8.3 Feature Description

8.3.1 The Adaptive On-Time Control and PWM Operation

The main control loop of the TPS562210 and TPS563210 are adaptive on-time pulse width modulation (PWM)

controller that supports a proprietary D-CAP2™ mode control. The D-CAP2™ mode control combines adaptive

on-time control with an internal compensation circuit for pseudo-fixed frequency and low external component

count configuration with both low ESR and ceramic output capacitors. It is stable even with virtually no ripple at

the output.

Copyright © 2015, Texas Instruments Incorporated

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Product Folder Links: TPS562210 TPS563210