Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus
The STEVAL-ISA140V1 is a 15 W wide range evaluation board based on the Viper37HE. It is designed as an example of an isolated auxiliary power supply. The board and the transformer were designed and optimized in order to have a very compact size evaluation board.
The VIPER37 device is an offline converter with an 800 V rugged power section, a PWM control, two levels of overcurrent protection, overvoltage and overload protection, hysteretic thermal protection, soft-start, and safe auto-restart after the removal of any fault condition. Burst mode operation and very low device consumption help to meet the standby energy saving regulations. Advance frequency jittering reduces EMI filter costs. Brownout function protects the switch mode power supply when the rectified input voltage level is below the normal minimum level specified for the system. The high voltage startup circuit is embedded in the device.
Applications:
- SMPS for set-top boxes, DVD players and recorders, white goods
- Auxiliary power supply for consumer and home equipment
- ATX auxiliary power supply
- Low / medium power AC-DC adapters
Features
- AC Main Input voltage range: 100 VACto 265 VAC
- Mains frequency (fL): 50 Hz / 60 Hz
- Output voltage typ: 12 V
- Output current: 1.25 A
- Output ripple voltage: 50 mV
- Rated output power: 15 W
- Input power in standby @230 VAC: 50 mW
- Active mode efficiency: 78%
- Ambient operating temperature: 60 °C
Ships With
- Board
