PL84052 Dual Constant Current Step-Down Switching Converter
關(guān)鍵詞： PL84052 降壓式開(kāi)關(guān)轉(zhuǎn)換器 雙路恒流 汽車(chē)啟停系統(tǒng) 工業(yè)電源應(yīng)用
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
