Analog Devices MAX17690 | Demoboard MAX17690A

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 withsecondary-side synchronous rectification. This circuit is implemented using the MAX17690, a no-opto, flyback controller in a 16-pin TQFN package with an exposedpad. The synchronous rectification on the secondaryside is enabled by replacing the secondary diode with a MOSFET to achieve 90% efficiency. The circuit uses theMAX17606, 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, andtemperature without using the auxiliary winding/optocoupler for output voltage feedback.

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

Typical applications

• DC-DC converter

More information

• Datasheet
• IC product information