SW

MOSFET Driver

Anti Shoot Through

Converter Control

Logic

High Side

Current

Sense

Vref

0.8V

Comparator

Error Amplifier

PVIN

PGND

EN

DEF

EN

M1

M2

VOS

SW

FB

Direct Control

and

Compensation

ramp

Timer

ton

PGND

DCS - Control™

Charge Pump

for

Gate driver

CP

CN

SS

Iss

Voltage clamp

Vref

÷1.56

PVIN

Hiccup

current limit

#32 counter

Output voltage

discharge

logic

200Ω

M3

VREF

PG

VFB

Bandgap

Undervoltage

Lockout

Thermal shutdown

Vin

400kW

AVIN

AGND

(1)

Copyright © 2017, Texas Instruments Incorporated

7

TLV62095

www.ti.com

SLVSDD3A – MARCH 2016 – REVISED JANUARY 2017

Product Folder Links: TLV62095

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Copyright © 2016–2017, Texas Instruments Incorporated

7 Detailed Description

7.1 Overview

The TLV62095 synchronous step down converter is based on DCS-Control™ (Direct Control with Seamless

transition into Power Save Mode). This is an advanced regulation topology that combines the advantages of

hysteretic and voltage mode control.

The DCS-Control™ topology operates in PWM (Pulse Width Modulation) mode for medium to heavy load

conditions and in Power Save Mode at light load currents. In PWM mode, the converter operates with its nominal

switching frequency of 1.4 MHz having a controlled frequency variation over the input voltage range. As the load

current decreases, the converter enters Power Save Mode, reducing the switching frequency and minimizing the

current consumption of the IC to achieve high efficiency over the entire load current range. DCS-Control™

supports both operation modes using a single building block and therefore has a seamless transition from PWM

to Power Save Mode without effects on the output voltage. The TLV62095 offers excellent DC voltage regulation

and load transient regulation, combined with low output voltage ripple, minimizing interference with RF circuits.

7.2 Functional Block Diagram

(1) The resistor is disconnected when EN is high.