TPS62442-Q1中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? AEC-Q100-qualified for automotive applications

– Device temperature grade 1:

–40°C to +125°C TA

? Functional Safety-Capable

– Documentation available to aid functional safety

system design

? Input voltage range: 2.75 V to 6 V

? Dual-channel output, output voltage from 0.6 V to

5.5 V

? Output voltage accuracy ±1 (PWM operation)

? Forced PWM or PWM and PFM operation

? Adjustable switching frequency of

1.8 MHz to 4 MHz

? Two precise ENABLE inputs allow:

– User-defined undervoltage lockout

– Exact sequencing

? Two power-good outputs with window comparator

? 180° phase shifted operation

? 100 duty cycle mode

? Active output discharge

? Optional spread spectrum clocking

? Optional foldback overcurrent protection

? TJ = –40°C to +150°C

? 2.3-mm × 2.7-mm QFN package with wettable

flanks

2 Applications

? ADAS camera and ADAS sensor fusion

? Surround view ECU

? Hybrid and reconfigurable cluster

? Infotainment head unit and digital cockpit

? Telematics control unit

3 Description

The TPS6244x-Q1 is a family of pin-to-pin dual 1-A,

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

synchronous step-down DC/DC converters. They

are based on a peak current mode control topology.

The devices are designed for automotive applications

such as infotainment and advanced driver assistance

systems. Low resistive switches allow up to 3-A

continuous output current and a 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 from 2 MHz to 4 MHz. In PWM

and PFM mode, the TPS6244x-Q1 automatically

enters power save mode at light loads to maintain

high efficiency across the whole load range. The

TPS6244x-Q1 provides a 1 output voltage accuracy

in PWM mode, which helps design a power supply

with high output voltage accuracy.

The TPS6244x-Q1 is available as an adjustable

voltage version, packaged in a VQFN package.