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| Intermediate Bus PWM Controller |
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Available in RoHS/Pb-Free
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 Buy direct from Intersil
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 Check distributor inventory
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 Request samples
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Part No. |
Design-In
Status |
Temp. |
Package |
MSL |
Price
US $ |
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| ISL6744AABZ |
Active |
Automotive |
8 Ld SOIC |
1 |
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| ISL6744AABZ-T |
Active |
Automotive |
8 Ld SOIC T+R |
1 |
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| ISL6744AAUZ |
Active |
Automotive |
8 Ld MSOP |
2 |
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| ISL6744AAUZ-T |
Active |
Automotive |
8 Ld MSOP T+R |
2 |
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| The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices in today's market are fluid and may change without notice. |
| MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020 |
| SMD = Standard Microcircuit Drawing |
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 Description |
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The ISL6744A 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 voltagemode 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. The ISL6744A is identical to the ISL6744, but is optimized for higher noise environments.
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. |
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 Key Features |
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Precision Duty Cycle and Deadtime Control
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100μA Start-up Current
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Adjustable Delayed Overcurrent Shutdown and Restart
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Adjustable Oscillator Frequency Up to 2MHz
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1A MOSFET Gate Drivers
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Adjustable Soft-Start
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Internal Over Temperature Protection
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35ns Control to Output Propagation Delay
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Small Size and Minimal External Component Count
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Input Undervoltage Protection
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Pb-Free (RoHS Compliant)
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| Related Documentation |
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 Datasheet(s): |
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 Parametric Data |
| | Control Mode | | Voltage Mode | | | UVLO Rising (V) | | 6.2 | | | UVLO Falling (V) | | 5.7 | | | VBIAS (max) (V) | | 20 | | | No-Load Operating Current (mA) | | 3 | | | # of PWM Outputs | | 2 | | | FET Driver IOUT (max) (A) | | 1 | | | Max Duty Cycle (%) | | 100 | |
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| Applications |
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- Telecom and Datacom Isolated Power
- DC Transformers
- Bus Converters
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| | ISL6740 | | Flexible Double-Ended Voltage-Mode PWM Controller | | | | ISL6740A | | Flexible Double-Ended Voltage-Mode PWM Controller with Voltage Feed Forward | | | | ISL6741 | | Flexible Double-Ended Peak-Current-Mode PWM Controller | | | | ISL6742 | | Advanced Double-Ended PWM Controller with Synchronous Rectifier Control and Average Current Limit | | | | ISL6744 | | Intermediate Bus Double-Ended PWM Controller with Precision Dead-Time Adjustment | | | | ISL6745 | | Voltage-Mode Double-Ended PWM Controller with Precision Dead-Time Adjustment | | | | ISL6745A | | Improved Bridge Controller with Precision Dead Time Control | |
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