Overview
Description
The ISL6745A 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 ISL6745A allows for accurate adjustment of MOSFET non-overlap time (dead time) with dead times as low as 35ns, allowing power engineers to optimize the efficiency of open-loop bus converters. The ISL6745A also includes a control voltage input for closed-loop PWM and line voltage feed-forward functions. The ISL6745A is identical to the ISL6745, 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 also features adjustable switching frequency up to 1MHz, 1A FET drivers, and very low propagation delays for a fast response to overcurrent faults. The ISL6745A is available in a space-saving 10 Ld MSOP package and is assured to meet rated specifications across 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 restart
- 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 (RoHS compliant)
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 632 KB | |
| Product Change Notice | PDF 178 KB | |
| Product Change Notice | PDF 398 KB | |
| Application Note | PDF 746 KB | |
| Application Note | PDF 509 KB | |
| Application Note | PDF 397 KB | |
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Design & Development
Boards & Kits
Evaluation
ISL6745ALEVAL3Z
Last Time Buy
TRIAC Dimmer Compatible High Brightness White LED Driver Evaluation Board
The ISL6745ALEVAL3Z is a low cost, high performance LED driver with power factor correction (PFC) function that is compatible with widely used wall dimmers. It uses Renesas' ISL6745A voltage mode PWM controller to operate a SEPIC converter in discontinuous conduction mode (DCM).
The ISL6745A is a...
Recommended Documents:
Evaluation
ISL6745EVAL1Z
Last Time Buy
48V to 12V 120W Half-Bridge Power Supply Evaluation Board
The ISL6745EVAL1Z evaluation board utilizes Renesas' ISL6745A double-ended voltage-mode PWM controller for half-bridge converters with secondary side synchronous rectification. The ISL6745 voltage mode PWM controller is a 10 Ld MSOP device.
The input of the evaluation board ranges from 36V to...
Recommended Documents:
Evaluation
ISL6745LEVAL2Z
Last Time Buy
Offline High Brightness White LED Driver Evaluation Board
The ISL6745EVAL2Z evaluation board is a reference design for powering high brightness white LEDs.
The ISL6745UEVAL2Z utilizes Renesas' ISL6745A, a double-ended voltage mode PWM controller, for a SEPIC converter application requiring a constant output current. It consists of separate...
Recommended Documents:
Evaluation
ISL6745UEVAL2Z
Last Time Buy
Offline High Brightness White LED Driver Evaluation Board
The ISL6745EVAL2Z evaluation board is a reference design for powering high brightness white LEDs.
The ISL6745UEVAL2Z utilizes Renesas' ISL6745A, a double-ended voltage mode PWM controller, for a SEPIC converter application requiring a constant output current. It consists of separate...
Recommended Documents:
Evaluation
ISL6745AHEVAL5Z
Obsolete
TRIAC Dimmer Compatible LED Driver Evaluation Board (High Line)
The ISL6745AHEVAL5Z (high line) and ISL6745ALEVAL5Z (low line) are low cost, high performance LED drivers with power factor correction (PFC). They use Renesas' ISL6745A voltage mode PWM controller to operate a flyback converter in discontinuous conduction mode (DCM) for PFC. The design gives...
Recommended Documents:
Evaluation
ISL6745ALEVAL5Z
Obsolete
TRIAC Dimmer Compatible LED Driver Evaluation Board (Low Line)
The ISL6745AHEVAL5Z (high line) and ISL6745ALEVAL5Z (low line) are low cost, high performance LED drivers with power factor correction (PFC). They use Renesas' ISL6745A voltage mode PWM controller to operate a flyback converter in discontinuous conduction mode (DCM) for PFC. The design gives...
Recommended Documents:
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
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