STEVAL-ISA001V1| Datasheet

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STEVAL-ISA001V1
6W dual output supply evaluation board using VIPer12A
Data Brief

Features

Switch mode general purpose power supply Input: 85 to 264 VAC @ 50/60 Hz Output: 12V @ 0.5A Output power (peak) 6W Burst mode operation in standby for blue angel operation Current mode control Switching frequency 60 kHz Over 74% efficiency Auxiliary undervoltage lockout with hysteresis Output short circuit protection Thermal shutdown protection Meets EN55022 Class B EMI specification STEVAL-ISA001V1

Description
The evaluation board consumes less than 1W total power consumption when working in the burst mode during standby operation and therefore, meets Blue Angel norm. Table 2 below outlines the total power consumption measured on the reference board at different line voltages with zero loads at both the outputs. The output voltages remain regulated when operating in burst mode condition.

Applications
This evaluation board is an off-line wide range dual output general-purpose power supply capable of delivering a total output power up to 6W. In low load condition, it operates in the automatic burst mode while in an overvoltage condition it will operate in hiccup mode. Other output voltages can easily be achieved by changing the transformer and a few components on the board, as shown in the application note. Transformers are readily available for the following configurations:

5V/12V 5V/15V 5V/24V

July 2007

Rev 1

1/5
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For further information contact your local STMicroelectronics sales office.