TPS61175PWP.B中文资料德州仪器数据手册PDF规格书

1 Features

1• 2.9-V to 18-V Input voltage range

• 3-A, 40-V Internal switch

• High-efficiency power conversion: Up to 93%

• Frequency set by external resistor: 200 kHz to 2.2

MHz

• Synchronous external switching frequency

• User-defined soft start into full load

• Skip-switching cycle for output regulation at light

load

• 14-Pin HTSSOP package with PowerPad™

• Create a custom design using the TPS61175 with

the WEBENCH Power Designer

2 Applications

• 5-V to 12-V, 24-V Power conversion

• Supports SEPIC and flyback topologies

• ADSL modems

• TV tuners

3 Description

The TPS61175 device is a monolithic switching

regulator with integrated 3-A, 40-V power switch. The

device can be configured in several standard

switching-regulator topologies, including boost,

SEPIC, and flyback. The device has a wide input

voltage range to support application with input voltage

from multicell batteries or regulated 5-V, 12-V power

rails.

The TPS61175 regulates the output voltage with

current mode pulse width modulation (PWM) control.

The switching frequency of PWM is set by either an

external resistor or an external clock signal. The user

can program the switching frequency from 200 kHz to

2.2 MHz.

The device features a programmable soft-start

function to limit inrush current during start-up, and

has other built-in protection features, such as pulseby-

pulse overcurrent limit and thermal shutdown. The

TPS61175 is available in 14-pin HTSSOP package

with PowerPad.