Overview
Description
The ISL6754 is a high performance extension of the Renesas family of Zero-Voltage Switching (ZVS) full-bridge PWM controllers. Like the ISL6752, it achieves ZVS operation by driving the upper bridge FETs at a fixed 50% duty cycle while the lower bridge FETs are trailing-edge modulated with adjustable resonant switching delays. Adding to the ISL6752’s feature set are average current monitoring and soft-start. The average current signal may be used for average current limiting, current sharing circuits and average current mode control. Additionally, the ISL6754 supports both voltage- and current-mode control. The ISL6754 features complemented PWM outputs for Synchronous Rectifier (SR) control. The complemented outputs may be dynamically advanced or delayed relative to the PWM outputs using an external control voltage. This advanced BiCMOS design features precision dead time and resonant delay control, and an oscillator adjustable to 2MHz operating frequency. Additionally, multi-pulse suppression ensures alternating output pulses at low duty cycles where pulse skipping may occur.
Features
- Adjustable resonant delay for ZVS operation
- Synchronous rectifier control outputs with adjustable delay/advance
- Voltage- or current-mode control
- 3% current limit threshold
- Adjustable average current limit
- Adjustable dead time control
- 175μA start-up current
- Supply UVLO
- Adjustable oscillator frequency up to 2MHz
- Internal over-temperature protection
- Buffered oscillator sawtooth output
- Fast current sense to output delay
- Adjustable cycle-by-cycle peak current limit
- 70ns leading edge blanking
- Multi-pulse suppression
- Pb-free (RoHS compliant)
Comparison
Applications
Documentation
Featured Documentation
Log in required to subscribe
|
|
|
|
|---|---|---|
| Type | Title | Date |
| Datasheet | PDF 1.43 MB | |
| End Of Life Notice | PDF 603 KB | |
| Application Note | PDF 1.49 MB | |
| Application Note | PDF 509 KB | |
| Application Note | PDF 397 KB | |
5 items
|
||
Design & Development
Boards & Kits
Evaluation
ISL6752/54EVAL1Z
Last Time Buy
ZVS Full-Bridge PWM Controller Evaluation Board
The ISL6752/54EVAL1Z is a new design based on the ISL6752EVAL1Z but with several design modifications to improve the efficiency from 90% to 95%. The control circuit has been moved off the main board onto a daughter card. Two different daughter cards are provided: one using the ISL6752 and the...
Recommended Documents:
Evaluation
ISL6752DBEVAL1Z
Last Time Buy
ZVS Full-Bridge PWM Controller Evaluation Board
The ISL6752/54EVAL1Z is a new design based on the ISL6752EVAL1Z but with several design modifications to improve the efficiency from 90% to 95%. The control circuit has been moved off the main board onto a daughter card. Two different daughter cards are provided: one using the ISL6752 and the...
Recommended Documents:
Evaluation
ISL6754DBEVAL1Z
Obsolete
ZVS Full-Bridge PWM Controller Evaluation Board
The ISL6752/54EVAL1Z is a new design based on the ISL6752EVAL1Z but with several design modifications to improve the efficiency from 90% to 95%. The control circuit has been moved off the main board onto a daughter card. Two different daughter cards are provided: one using the ISL6752 and the...
Recommended Documents:
Evaluation
ISLACDC750WEVKIT1Z
Active
Boost PFC and Asymmetrical Full-Bridge ZVS Converter Evaluation Kit
The ISLACDC750WEVKIT1Z evaluation kit is designed to demonstrate ATX PC power supply applications based on the ISL6754 ZVS full-bridge PWM controller, ISL6731A and ISL6731B power factor correction (PFC) controllers, and the ISL6721 single-ended current mode PWM controller. With a 400V DC bus,...
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.
Product Options
Applied Filters: