TPS61287中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Wide input voltage and output voltage range

– VIN : 2.0V to 23V

– 2.5V Minimum input voltage for start-up

– VOUT : 4.5V to 25V

? High efficiency and power capability

– Programmable switch current limit: 5A to 20A

– Integrated 8.5mΩ high side MOSFET

– Switching frequency: 320kHz

– Up to 92.3% efficiency at VIN = 3.6V, VOUT =

18V, and IOUT = 2.0A

– Up to 95.48% efficiency at VIN = 7.2V, VOUT =

18V, and IOUT = 4.0A

? Support stackable multi-phase function

? Selectable Auto PFM and Forced PWM mode

? Synchronization capability to external clock

? Rich protection

– Output overvoltage protection at 27V

– Precise EN/UVLO threshold

– Cycle-by-cycle overcurrent protection

– Thermal shutdown

? External loop compensation

? 2.5mm × 3.0mm VQFN HotRod? Lite package

2 Applications

? Bluetooth? speaker

? Source driver of LCD display

? USB Type-C? power delivery

3 Description

The TPS61287 is a high-power density, synchronous

boost converter that integrates high side synchronous

rectifier MOSFET and uses an external low side

MOSFET to provide a high efficiency and small size

solution. The TPS61287 has wide input voltage range

from 2.0V to 23V and the output voltage covers up to

25V with 20A switching valley current capablity.

The TPS61287 uses adaptive constant on-time

valley current control topology to regulate the output

voltage. Under moderate to heavy load condition,

the TPS61287 operates in pulse width modulation

(PWM) mode. There are two optional modes in light

load by configuring the MODE pin: Auto PFM mode

to improve light-load efficiency and Forced PWM to

avoid audible noise and other problems caused by

low switching frequency.

The TPS61287 supports stackable multi-phase

operation. Up to 4pcs TPS61287 can be configured

for multi-phase operation at same switching frequency

to support higher power and input current balancing.

The TPS61287 offers a very small solution size with

2.5mm x 3.0mm VQFN HotRod? Lite package with

minimal external components.