Part # Brief STEVAL-ISA029V1 VIPER53-E datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Compact power supply for DVD set-top box demonstration board with three Vout (-30 V, +3.3 V, +12 V)

Part Details:

STEVAL-ISA029V1 Compact power supply for DVD/set-top box demonstration board with three Vout (-30 V, +3.3 V, +12 V) Data Brief Features Input voltage range: 85 VAC ­ 300 VAC VOUT1= 12 V (±5%) IOUT1= 1 A VOUT2= 3.3 V (±2%) IOUT2= 100 mA VOUT3= -24 V (±10%) IOUT3= 40 mA Safety EN60950 compliant EMI - conducted EN55022-B compliant STEVAL-ISA029V1 Description The STEVAL-ISA029V1 demonstration board is an isolated triple-output flyback converter, suitable for wide-range input voltage operation. The converter is based on the smart power VIPer53-E which, in a single package, integrates an enhanced current-mode PWM controller and a high-voltage MDmeshTM power MOSFET. The switching frequency is set to 60 kHz by means of an external RC network connected to a dedicated pin on the IC. The closed loop regulation is performed on the 12 V output using an optocoupler, which drives the COMP pin of the VIPer53-E. The 3.3 V output is post-regulated using a non-integrated low drop linear voltage regulator to achieve the required accuracy. The negative 24 V output is achieved by means of a discrete linear voltage regulator, made up of a Zener diode, a resistor and a PNP transistor. September 2008 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. 4 Board schematic STEVAL-ISA029V1 1 Board schematic Figure 1. Schematic diagram 7N 2 O 2J C 1 2 3 4 5 6 7 V.33+ u 5 .7 1 4 C n0 5 0 C 1 4 R 3 T33 1 2 M U

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Brief STEVAL-ISA029V1 VIPER53-E.pdf Datasheet