8 Detailed Description

8.1 Overview

The TLVM13610 is an easy-to-use, synchronous buck DC/DC power module designed for a wide variety of

applications where reliability, small solution size, and low EMI signature are of paramount importance. With

integrated power MOSFETs, a buck inductor, and PWM controller, the TLVM13610 operates over an input

voltage range of 3 V to 36 V with transients as high as 42 V. The module delivers up to 8-A (10-A peak) DC load

current with high conversion efficiency and ultra-low input quiescent current in a very small solution footprint.

Control loop compensation is not required, reducing design time and external component count.

With a programmable switching frequency from 200 kHz to 2.2 MHz using its RT pin or an external clock signal,

the TLVM13610 incorporates specific features to improve EMI performance in noise-sensitive applications:

• An optimized package and pinout design enables a shielded switch-node layout that mitigates radiated EMI

• Parallel input and output paths with symmetrical capacitor layouts minimize parasitic inductance, switch-

voltage ringing, and radiated field coupling

• Resistor-programmable switch-node slew rate

• Integrated power MOSFETs with enhanced gate drive control enable low-noise PWM switching

Together, these features significantly reduce EMI filtering requirements, while helping to meet CISPR 11 and

CISPR 32 Class B EMI limits for conducted and radiated emissions.

The TLVM13610 module also includes inherent protection features for robust system requirements:

• An open-drain PGOOD indicator for power-rail sequencing and fault reporting

• Precision enable input with hysteresis, providing

– Programmable line undervoltage lockout (UVLO)

– Remote ON and OFF capability

• Internally fixed output-voltage soft start with monotonic start-up into prebiased loads

• Hiccup-mode overcurrent protection with cycle-by-cycle peak and valley current limits

• Thermal shutdown with automatic recovery.

Leveraging a pin arrangement designed for simple layout that requires only a few external components, the

TLVM13610 is specified to maximum junction temperatures of 125°C. See typical performance curves to

estimate suitability in a given ambient environment.

8.2 Functional Block Diagram

COUT

CIN

PG

CBOOT

PGND

VCC

VOUT1, VOUT2

AGND

FB

EN

PGOOD

logic

+

VREF

Comp

Power

stage

and

control

logic

Shutdown

logic

OCP

UVLO

Oscillator

Soft start

LDO bias

subregulator

Enable

logic

2.2 µH

SW

RBOOT

VIN1, VIN2

100

SYNC

detect

RT

VLDOIN

OTP

EN

OTP

OCP

UVLO

VIN = 3 V to 36 V

Optional

external bias

(from VOUT)

VOUT = 1 V to 10 V

PGOOD

indicator

RENT

RENB

Precision

enable for

VIN UVLO

RRT

RFBB

RFBT

To VOUT

sense point

VIN

TLVM13610

SLVSH63 – FEBRUARY 2023

www.ti.com

12

Submit Document Feedback

Copyright © 2023 Texas Instruments Incorporated

Product Folder Links: TLVM13610