MAX17690EVKITA#

The MAX17690EVKITA# is an evaluation kit for evaluating MAX17690 no-opto flyback with secondary side synchronous rectification. It is a fully assembled and tested circuit board that demonstrates the operation of an isolated MAX17690 DC to DC converter. This circuit is implemented using MAX17690, a no-opto, flyback controller in a 16 pin TQFN package with an exposed pad. The synchronous rectification on secondary side is enabled by replacing the secondary diode with a MOSFET to achieve 90% efficiency. The circuit uses MAX17606, a secondary side synchronous rectifier driver in 6 pin SOT-23 package for driving secondary side MOSFET. The EV kit output is configured for an isolated +5V and provides up to 1A of output current. The transformer provides galvanic isolation between input and output up to 1875Vrms. It regulates output voltage within ±5% over the line, load and temperature without using auxiliary winding/optocoupler for output voltage feedback.

• Input voltage range from 18V to 36V
• Compact design with high frequency (150KHz) switching
• No optocoupler/third winding required to derive feedback signal
• Proven PCB layout

Applications

Power Management

Warnings

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party

Notes

Make sure all high-voltage capacitors are fully discharged before handling. Allow 5 minutes after disconnecting input power source before touching circuit parts.