Analog Devices ADPL54203

Description

The ADPL54203 operates from an input voltage range of 3.2V to 40V and delivers up to 17W of isolated output power. It is a monolithic micropower isolated flyback converter. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or optoisolator for regulation. The output voltage is programmed with two external resistors and a third optional temperature compensation resistor. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple Burst Mode operation maintains high efficiency at light load while minimizing the output voltage ripple.A 3.4A, 60V DMOS power switch is integrated along with all the high voltage circuitry and control logic into a thermally enhanced 8-lead SO package. The high level of integration and the use of boundary and low ripple burst modes result in a simple to use, low component count, and high efficiency application solution for isolated power delivery.

Features

• 3.4A, 60V Internal DMOS Power Switch
• 3.2V to 40V Input Voltage Range
• No Transformer Third Winding or Opto-Isolator Required for Output Voltage Regulation
• Quasi-Resonant Boundary Mode Operation at Heavy Load
• Low Ripple Burst Mode® Operation at Light Load
• Low Quiescent Current
• 115μA in Sleep Mode
• 390μA in Active Mode
• Minimum Load < 0.5% (Typ) of Full Output
• Temperature Compensation for Output Diode
• Internal Compensation and Soft-Start
• Output Short-Circuit Protection
• Accurate EN/UVLO Threshold and Hysteresis
• Thermally Enhanced 8-Lead SO Package

Typical applications

• Isolated Auxiliary/Housekeeping Power Supplies, Isolated Industrial, Medical Power Supplies

More information

• Datasheet
• IC product information