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Key Features
Applications/Uses
Simplified Block Diagram
Technical Docs
| Data Sheet | Evaluation Kit for the MAX17690 | Nov 22, 2017 | |
| App Note | How to Design a No-Opto Flyback Converter with Secondary-Side Synchronous Rectification |
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Key Features
- 18V to 36V Input Range
- Isolated Output: 5V/1A DC
- Compact Design with High Frequency (150kHz) Switching
- No Optocoupler/Third Winding Required to Derive Feedback Signal
- 90% Peak Efficiency
- Galvanic Isolation up to 1875VRMS
- Proven PCB Layout
- Fully Assembled and Tested
- Minimum Load for ±5% Regulation: 1% of Full-Load
Applications/Uses
- Industrial and Telecom Applications
- Isolated Flyback Converters
- PLC I/O Modules
- Wide-Range DC-Input Isolated Power Supplies
Description
The MAX17690A evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the operation of an isolated 5W no-opto flyback DC-DC converter with secondary-side synchronous rectification. This circuit is implemented using the MAX17690, a no-opto, flyback controller in a 16-pin TQFN package with an exposed pad. The synchronous rectification on the secondary side is enabled by replacing the secondary diode with a MOSFET to achieve 89.5% efficiency. The circuit uses the MAX17606, a secondary-side synchronous rectifier driver in a 6-pin SOT23 package for driving the secondary-side MOSFET.
The EV kit output is configured for an isolated +5V and provides up to 1A of output current. The EV kit is programmed to operate at a 150kHz switching frequency. The transformer provides the galvanic isolation between input and output, up to 1875VRMS. The EV kit regulates the output voltage within ±5% over the line, load, and temperature without using the auxiliary winding/optocoupler for output voltage feedback.
Get Started with No-Opto Flyback Technology and the MAX17690
Simplified Block Diagram
Technical Docs
| Data Sheet | Evaluation Kit for the MAX17690 | Nov 22, 2017 | |
| App Note | How to Design a No-Opto Flyback Converter with Secondary-Side Synchronous Rectification |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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