TPS62442RQRR中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Functional Safety-Capable

– Documentation available to aid functional safety

system design

? 0.6-V to 5.5-V dual-channel, output voltage

? 1-A/1-A, 2-A/2-A, 3-A/1-A output currents

? 2.75-V to 6-V input voltage range

? 1 feedback voltage accuracy (PWM operation)

? TJ = –40°C to +150°C

? Two precise ENABLE inputs allow:

– User-defined undervoltage lockout

– Exact sequencing

? Two power-good outputs with window comparator

? 1.8-MHz to 4-MHz adjustable switching frequency

? Optional synchronization to external clock

? Optional spread spectrum clocking

? Forced PWM or PWM/PFM operation

? Selectable compensation network up to 200 μF

? 22-μA quiescent current

? 180° phase shifted operation

? 100 duty cycle mode

? Active output discharge

? Thermal shutdown protection

? 2.3-mm × 2.7-mm QFN package

2 Applications

? Motor drives/drone controller

? Robotics HMI

? Test and measurement

? Machine vision

? String inverter

3 Description

The TPS6244x is a family of pin-to-pin dual 1-A,

dual 2-A, and 3-A/1-A high-efficiency and easy-touse

synchronous step-down DC/DC converters. The

device family is based on a peak current mode control

topology. The devices are designed for industrial

applications such as motor drives and robotics. Low

resistive switches allow up to 3-A continuous output

current and total maximum output current up to 4-A at

high ambient temperature. The switching frequency is

externally adjustable from 1.8 MHz to 4 MHz and can

also be synchronized to an external clock in the same

frequency range. In PWM/PFM mode, the TPS6244x

automatically enters power save mode at light loads

to maintain high efficiency across the whole load

range. The TPS6244x provides a 1 output voltage

accuracy in PWM mode, which helps design a power

supply with high output voltage accuracy.

The TPS6244x is available as an adjustable voltage

version, packaged in a VQFN package.