Терраэлектроника
Применения > > Evaluation Kit for the MAX17690 (MAX17690EVKITA)

Evaluation Kit for the MAX17690 (MAX17690EVKITA) (MAX17690EVKITA)

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 90% 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.

Возможности

  • 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

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