MAX17690EVKITA#

MAX17690EVKITA# is a MAX17690A evaluation kit (EV kit). This 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.

• 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

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.