PL59011(DC-DC同步降压IC)

1 Features

 12V to 100V wide operating input range

 Adjustable Frequency from 50kHz to 500kHzOperation

 Precision Reference Voltage (1.2 V)

 Programmable Soft−Start with Pre-biased LoadCapability

 Programmable EN Off Delay Function

 Programmable Over-Load Protection with 0.2sblank timer and Hiccup

 Programmable Cycle-by-Cycle Current LimitingProtection

 Programmable Input Under-Voltage LockoutProtection with Latch

 Programmable Input Over-Voltage Protection withLatch

 Output Over-Voltage Protection

 Over-Temperature Protection

 ETSSOP20 packages

2 Applications

 48 V Non−Isolated DC−DC Converter

 Car applications

 Telecom Bus Converters

 General purpose

 USB Type-C Power Delivery

 Industrial DC-DC Motor Drivers

3 Description

PL59011 is a high voltage PWM controller designed forhigh performance synchronous Buck DC/DC applicationswith input voltages up to 100V.

PL59011 drives a pair of external N−MOSFETs. Theswitching frequency is programmable from 50 kHz up to500 kHz allowing the flexibility to tune for efficiency andsize. The output voltage can be preciselyregulated usingthe internally 1.2 V reference voltage for low voltageapplications.

Protection features include user programmable undervoltage lockout, over voltage lockout and over currentprotection. The supply current drops below 10µA inshutdown mode. PL59011 is a good choice for carinfotainment application, telecom bus converter, etc.