RDK-242 Power Integrations, RDK-242 Datasheet - Page 42

• Manufacturer Part Number: RDK-242
• Description: Power Management Modules & Development Tools TOPSwitch-JX REF. DESIGN KIT
• Manufacturer: Power Integrations
• Type: MOSFET & Power Driverr

Specifications of RDK-242

• Input Voltage: 85 VAC to 264 VAC
• Output Voltage: 12 V
• Maximum Operating Temperature: + 40 C
• Minimum Operating Temperature: 0 C
• Operating Supply Voltage: 85 VAC to 264 VAC
• Product: Power Management Modules

12.7 Overvoltage Protection (Open Loop Test)
OVP is initiated by shorting the LED of U2. This constitutes an open loop condition and
causes the output voltage, and bias voltage to rise. OVP is sensed in the primary by
sensing the bias winding.
Figure 37 – OVP at 85 VAC, No-load.
Figure 39 – OVP at 264 VAC, No-load.
Power Integrations, Inc.
Tel: [phone] Fax: [phone]
www.powerint.com
OVP Trip Point = 18.75 V.
OVP Trip Point = 18.96 V.
Figure 38 – OVP at 85 VAC, Full Load.
Figure 40 – OVP at 264 VAC, Full Load.
OVP Trip Point = 16.67 V.
OVP Trip Point = 17.92 V.
Page 42 of 59