12W 5V SMPS evaluation board with ICE3AR4780VJZ

Abstract

Application Note

3

Revision 1.2, 2015-05-12

1

Abstract

This document is an engineering report of a universal input 12W 5V off-line flyback converter power supply

utilizing F3R80 CoolSET™ICE3AR4780VJZ. The application evaluation board is operated in Discontinuous

Conduction Mode (DCM) and is running at 100 kHz switching frequency. It has a single output voltage with

secondary side control regulation. It is especially suitable for small power supply such as DVD player, set-top

box, game console, charger and auxiliary power of white goods, server, PC and high power system, etc. The

ICE3AR4780VJZ is the latest version of the CoolSET™. Besides having the basic features of the F3R CoolSET™

such as Active Burst Mode, propagation delay compensation, soft gate drive, auto restart protection for

major fault (Vcc over voltage, Vcc under voltage, adjustable input OVP, over temperature, over-load, open

loop and short opto-coupler), it also has the BiCMOS technology design, selectable entry and exit burst

mode level, adjustable AC line input over voltage protection feature, built-in soft start time, built-in and

extendable blanking time and frequency jitter feature, etc. The particular features are the best-in-class low

standby power and the good EMI performance.

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Evaluation board

This document contains the list of features, the power supply specification, schematic, bill of material and

the transformer construction documentation. Typical operating characteristics such as performance curve

and scope waveforms are showed at the rear of the report.

Figure 1

EVAL-3AR4780VJZ [Dimensions L x W x H: 95mm x 41mm x 24mm (3.74" x 1.61" x 0.94")]