TPS6287X-Q1中文资料德州仪器数据手册PDF规格书

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: 2.7 V to 6 V

• Family of pin-to-pin compatible devices: 15 A, 20

A, 25 A and 30 A

• 3 selectable output voltage ranges from 0.4 V to

1.675 V

– 0.4-V to 0.71875-V with 1.25-mV steps

– 0.4-V to 1.0375-V with 2.5-mV steps

– 0.4-V to 1.675-V with 5-mV steps

• Output voltage accuracy: ±0.8%

• Internal power MOSFETs: 2.6 mΩ and 1.5 mΩ

• Adjustable soft start

• External compensation

• Selectable start-up output voltage through the

VSEL pin

• Selectable switching frequency of 1.5 MHz, 2.25

MHz, 2.5 MHz or 3 MHz, through FSEL pin

• Forced PWM or power-save mode operation

• Start-up output voltage selection by external

resistor or I2C

• I2C-compatible interface with up to 3.4 MHz

• Optional stacked operation for increased output

current capability

• Differential remote sense

• Thermal pre-warning and thermal shutdown

• Output discharge

• Optional spread spectrum clocking

• Power-good output with window comparator

2 Applications

• ADAS camera, ADAS sensor fusion

• Surround view ECU

• Hybrid and reconfigurable cluster

• Head unit, telematics control unit

3 Description

The TPS62874-Q1, TPS62875-Q1, TPS62876-Q1

and TPS62877-Q1 are a family of pin-to-pin 15-A,

20-A, 25-A and 30-A synchronous step-down DC/DC

converters with I2C interface and differential remote

sense. All devices offer high efficiency and ease of

use. Low-resistance power switches allow up to 30-A

output current at high ambient temperature.

The devices can operate in stacked mode to deliver

higher output currents or to spread the power

dissipation across multiple devices.

The TPS6287x-Q1 family implements an enhanced

DCS control scheme that combines fast transient

response with fixed-frequency operation. Devices can

operate in power-save mode for maximum efficiency,

or forced-PWM mode for best transient performance

and lowest output voltage ripple.

An optional remote sensing feature maximizes voltage

regulation at the point-of-load, and the device

achieves ±0.8% DC voltage accuracy for the full

output voltage range.

The switching frequency is selectable through the

FSEL pin, and can be set to 1.5 MHz, 2.25 MHz, 2.5

MHz or 3 MHz, or synchronized to an external clock in

the same frequency range.

The I2C compatible interface offers several control,

monitoring and warning features, such as voltage

monitoring and temperature related warnings. The

output voltage can be quickly adjusted to adapt the

load´s power consumption to the performance needs.

The default start-up voltage is resistor selectable

through the VSEL pin.