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April 2013

DocID024565 Rev 1

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STEVAL-ISA134V1

12 V - 4 W, 115 kHz isolated flyback based on the VIPer06

Data brief

Features

• High frequency output voltage ripple:

• Min active mode efficiency ηAV = 71%

• Max ambient operating temperature:

Description

The STEVAL-ISA134V1 demonstration board is a

a 12 V - 4 W power supply in isolated flyback

topology using the VIPer06, a new off-line high

voltage converter by STMicroelectronics.

The VIPer06 features an 800 V avalanche rugged

power section, PWM operation at 115 kHz with

frequency jittering for lower EMI, cycle-by-cycle

current limit with adjustable set point, on-board

soft-start and safe auto-restart after a fault

condition.

Protection features available include thermal

shutdown with hysteresis, delayed overload

protection, and open loop failure protection (the

latter available only if auxiliary winding is used).

This flyback converter design is suitable for

various applications, such as external adapter or

as an auxiliary power supply in consumer

equipment.

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