The ISL6744AB-T is a low cost, primary side, double-ended controller intended for applications using full and half-bridge topologies for unregulated DC/DC converters. It is a voltage mode PWM controller designed for half-bridge and fullbridge power supplies. It provides precise control of switching frequency, adjustable soft-start, precise deadtime control with deadtimes as low as 35ns, and overcurrent shutdown. Low start-up and operating currents allow for easy biasing in both AC/DC and DC/DC applications. This advanced BiCMOS design features low start-up and operating currents, adjustable switching frequency up to 1MHz, 1A FET drivers, and very low propagation delays for a fast response to overcurrent faults.
Feature
- Precision Duty Cycle and Deadtime Control
- 100µA Start-up Current
- Adjustable Delayed Overcurrent Shutdown and Re-Start
- Adjustable Oscillator Frequency Up to 2MHz
- 1A MOSFET Gate Drivers
- Adjustable Soft-Start
- Internal Over Temperature Protection
- 35ns Control to Output Propagation Delay
- Small Size and Minimal External Component Count
- Input Undervoltage Protection
- Pb-Free Plus Anneal Available (RoHS Compliant)