Overview
Description
The ISL6744 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.
Features
- 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)
Comparison
Applications
- Telecom and Datacom Isolated Power
- DC Transformers
- Bus Converters
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 857 KB | |
| End Of Life Notice | PDF 603 KB | |
| Product Change Notice | PDF 266 KB | |
| Product Change Notice | PDF 398 KB | |
| Product Change Notice | PDF 77 KB | |
| Product Change Notice | PDF 108 KB | |
| Application Note | PDF 509 KB | |
| Application Note | PDF 397 KB | |
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| SOICN | Tube | 980 | ||
| SOICN | Reel | 2500 | ||
| MSOP | Tube | 980 |
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