苏州PL56001(DC-DC同步降压IC)

1 Features

? 4.5V to 36V wide operating input range

? 10A continuous output current capability

? Dynamical programming of output current andOutput voltage using PWM signal or analog signal

? Adjustable Switching Frequency using resistor

? Frequency dithering for good EMI performance

? Integrated 2-A MOSFET Gate Drivers

? Comprehensive protection features includingOutput Short Protection (OSP), Cycle-by-Cycleinput and output Peak Current Limit, thermalregulation, thermal shutdown, input UVLO, inputOVP, output OVP etc.

? Output Average Current Limiting with stable CCloop

? 5V/55mA low I q LDO to power system 苏州MCU

? QFN4x4-20 Package

2 Applications

? Automotive Start-Stop Systems

? Industrial PC Power Supplies

? USB Power Delivery

3 Description

PL56001 is a PWM controller, designed for highperformance synchronous Buck DC/DC applicationswith input voltages 4.5 V to 32 V (36 V maximum).

PL56001 employs Constant ON time control. Theswitching frequency could be set to 150kHz, 300kHz,

600kHz or 1200kHz based on different resistor valuebetween FREQ pin and GND pin. The device alsofeatures a programmable soft-start function andoffers all kinds of protection features includingcycle-by-cycle current limiting, input under voltagelockout (UVLO), output over voltage protection(OVP), input Over Voltage Protection, thermalshutdown and output short protection etc.

PL56001 provides voltage control loop, constantcurrent loop, and thermal regulation loop.