OVP voltage problem and Vout
Posted by: y2121611
on
DER-815 - 45 W 24 V Output used InnoSwitch3-CP.
InnoSwitch3-CP datasheet VOUT Pin Voltage is -0.3V to 27V but DER-815 OVP trigger voltage is 34V.
VOUT Pin Voltage 34V has any problem or damage to the product.
Hi,
Yes, You are right, the IC might get damage at VOmax = 34V. The OVP circuit on the secondary side is meant to prevent the output capacitor to blow in case of output overvoltage. Adding Zener + resistor from primary bias voltage to the BPS would provide a more accurate and faster response overvoltage protection.
Regards
Mark