The HF900 is a flyback regulator with a 900V MOSFET integrated, targeting high AC input voltage application. The switching frequency can be programmed with one external resistor
The EVHF900-P-00A Evaluation Board is designed to demonstrate the capabilities of HF900 and is also designed for off-line high input voltage (85VAC~420VAC) application with triple outputs (13.5V/300mA, 8V/50mA, 8V/50mA). The 8V output rail can power the LDO for MCU power supply.
The EVHF900-P-00A has an excellent performance and meets EN55022 conducted EMI requirements easily with frequency jittering function. It has various protections like Over Temperature Protection (OTP), VCC Under Voltage Lockout (UVLO), Over Load Protection (OLP), Over Voltage Protection (OVP), Short Circuit Protection (SCP) and built-in PRO pin for extra protection setting.
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