TPS6287B20中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Input voltage range: 2.7 V to 6 V

? Family of pin-to-pin compatible devices: 10 A, 15

A, 20 A, 25 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

VSET1 and VSET2 pins

– 0.4 V to 0.775 V with 25 mV of steps

– 0.8 V to 1.55 V with 50 mV of steps

? 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

? FPGA, ASIC and digital core supply

? Optical networks

? Storage

3 Description

The TPS6287B10, TPS6287B15, TPS6287B20 and

TPS6287B25 are a family of pin-to-pin 10-A,15-A, 20-

A, 25-A synchronous step-down DC/DC converters

with I2C interface and differential remote sense. All

devices offer high efficiency and ease of use. Lowresistance

power switches allow up to 25-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 TPS6287Bx 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 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 VSET1 and VSET2 pins.