1 Features

• AEC-Q100 qualified for automotive applications

– Device temperature grade 1: –40°C to 125°C

TA

– –40°C to 150°C junction temperature range

• Functional Safety-Capable

– Documentation available to aid functional safety

system design

• Input voltage range: 2.8V to 6V

• ±0.5% output voltage accuracy

• Output voltage range from 0.4V to 1.0V

• 1.8mΩ and 0.7mΩ internal power MOSFETs

• External compensation

• Optional stacked operation for increased output

current capability

• Adjustable switching frequency from 833kHz to

3MHz (product preview)

• External synchronization

• Forced PWM or power save mode operation

• Optimized load transient operation

• Fixed frequency DCS-Control

• Transient non-synchronous mode

• Adjustable droop compensation

• Optimized for small and low-profile inductors

• I2C-compatible interface with up to 3.4MHz

• Differential remote sense

• Thermal pre-warning and thermal shutdown

• Input and output overvoltage protection

• Output discharge

• Optional spread spectrum clocking

• Telemetry for VIN, Temp, VOUT, and IOUT

• Interrupt output

• Power-good output with window comparator with

adjustable thresholds

• Available in 5.0mm × 6.0mm, VQFN package

2 Applications

• ADAS sensor fusion

• Surround view ECU

• Hybrid and reconfigurable cluster

• Head unit, telematics control unit

3 Description

The TPS6289x-Q1 devices are a family of pin-topin

30A, 40A, and 50A synchronous step-down

DC/DC converters with I2C interface and differential

remote sense. Low-resistance power switches allow

up to 50A continuous output current at high ambient

temperatures. The devices can operate in stacked

mode to deliver higher output currents or to spread

the power dissipation across multiple devices. In

stacked operation, the converters frequencies are

synchronized, share a common compensation signal

and shift the phases to supply loads with several

hundreds of amperes. The TPS6289x-Q1 family

implements a fixed-frequency-DCS-Control scheme

with adjustable switching frequency and adjustable

loop compensation. The high switching frequency and

loop bandwidth is optimized for low-profile- and smallsize

inductors and low output capacitance. Devices

can operate in power-save mode (PSM) for maximum

efficiency, or forced-PWM mode for best transient

performance and lowest output voltage ripple. The I2C

compatible interface offers several control, monitoring

and warning features including telemetry data of

input voltage, output voltage, output current, and

temperature. Four SET pins can be used to program

default settings before start-up.