PL84052 Dual Constant Current Step-Down Switching Converter

PL84052 Dual Constant Current Step-Down Switching Converter

1、Features

3.0V to 32V wide operating input range

2.0V to 32V wide operating output range

100% duty

Integrated two 13mQ power MOSFETs.

Dynamical programming of output current and

Output voltage using PWM signal or analog signal

Adjustable Switching Frequency using resistor

Frequency dithering for good EMl performance

Integrated 2-A MOSFET Gate Drivers

Comprehensive protection features including Output

Short Protection(OSP)，Cycle-by-Cycle Peak

Current limit,thermal requlation, thermal shutdown

input UvLo. output OVP etc.

Dual Output Average Current Limiting with stable CC

loop QFN5x5-32 Package

2、 Applications

Automotive Start-Stop Systems

Industrial PC Power Supplies

USB Power Delivery

3 Description

     PL84052 is a PWM controller, designed for highperformance synchronous Buck DC/DC applications

with input voltages 3.0 V to 32 V(36 V maximum).PL84052 employs Constant ON time control. The switching frequency could be set to 150kHz,300kHz600kHz or 1200kHz based on different resistor value between FREQ pin and GND pin. The device also features a programmable soft-start function and offers all kinds of protection features including cycle-by-cycle current limiting, input under voltage lockout (UVLO),output over voltage protection (OVP), thermal shutdow and output short protection etc.

    PL84052 provides voltage control loop,constantcurrent loop, and thermal regulation loop.lications

  Automotive Start-Stop SystemsIndustrial PC Power SuppliesUSB Power Delivery

4、Website：www.baitaishengshi.com

5、 Typical Application Schematic