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Overview
| Topology | Other Topology |
| Switching frequency | 2000 kHz |
| IC revision | 6 |
Description
The ISL6745 is a low-cost double-ended voltage-mode PWM controller designed for half-bridge and full-bridge power supplies and line-regulated bus converters. It provides precise control of switching frequency, adjustable soft-start, and overcurrent shutdown. In addition, the ISL6745 allows for accurate adjustment of MOSFET nonoverlap time ("deadtime") with deadtimes as low as 35ns, allowing power engineers to optimize the efficiency of openloop bus converters. The ISL6745 also includes a control voltage input for closed-loop PWM and line voltage feedforward functions.
Low start-up and operating currents allow for easy biasing in both AC/DC and DC/DC applications. This advanced BiCMOS design also features adjustable switching frequency up to 1MHz, 1A FET drivers, and very low propagation delays for a fast response to overcurrent faults. The ISL6745 is available in a space-saving MSOP-10 package and is guaranteed to meet rated specifications over a wide -40°C to 105°C temperature range.
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 Available (RoHS Compliant)
Typical applications
- Telecom, datacom, and file server power
- AC/DC power supplies
- Half-bridge converters
- Line-regulated bus converters
- Full-bridge converters
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Pins | Type | G(mm) | Working Voltage(V (AC)) | Operating Temperature | IR(A) | L(mH) | RDC max.(mΩ) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-CMB Common Mode Power Line Choke, 4, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMB Common Mode Power Line Choke | Pins4 | – | Pin length5 mm | – | Operating Temperature -40 °C up to +125 °C | Rated Current8 A | Inductance2.2 mH | DC Resistance14 mΩ | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length30 mm | Width21 mm | Height35 mm | MountTHT | ||||
 | WR-PHD Socket Header - Single, 6, Straight | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Socket Header - Single | Pins6 | TypeStraight | – | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | Rated Current3 A | – | – | – | – | – | Length15.74 mm | – | – | MountTHT | ||
 | WR-PHD Socket Header - Single, 9, Straight | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Socket Header - Single | Pins9 | TypeStraight | – | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | Rated Current3 A | – | – | – | – | – | Length23.36 mm | – | – | MountTHT | ||
 | WR-PHD Socket Header - Single, 16, Straight | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Socket Header - Single | Pins16 | TypeStraight | – | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | Rated Current3 A | – | – | – | – | – | Length41.14 mm | – | – | MountTHT |