VIPER222XSTR STMicroelectronics

VIPER222 Datasheet High voltage converter Features 730 V avalanche rugged power MOSFET PWM controller 1.2 V reference voltage Frequency jittering 40 mW no load input power at 230 V AC Short-circuit protection Thermal shutdown Application Auxiliary SMPS for home appliances, consumer, industrial, lighting. Description The VIPER222 device is a high performance high voltage converter that combines a 730 V rugged power MOSFET with a PWM control. The device embeds the high voltage startup and the current sense circuit, avoiding the use of extra components in the BoM. Frequency jittering spreads the EMI and allows the use of a small filter. The burst mode technique allows to obtain a very low input power consumption at light load. Figure 1. Block diagram Product status link Vcc DRAIN VIPER222 Product label Istart-up OSCILLATOR SOFT START S Q OCP PWM BLOCK R LOGIC DIS - EA-IN + 1.2V E/A Rsense PROTECTIONS EA-OUT GND DS13192 - Rev 2 - January 2020 www.st.com For further information contact your local STMicroelectronics sales office.VIPER222 Pin setting 1 Pin setting Figure 2. Connection diagram GND 1 10 DRAIN VCC 2 9 DRAIN NC 3 8 DRAIN EA-IN 4 7 DRAIN EA-OUT 5 6 DRAIN Table 1. Pin description SSOP10 Name Function Connected to the source of the internal power MOSFET and controller ground 1 GND reference. Supply voltage of the control section. This pin provides the charging current of the 2 VCC external capacitor. 3 NC Not connected. The pin must be connected to GND pin. 4 EA-IN Input of the error amplifier. 5 EA-OUT Output of the error amplifier. High voltage drain pin. The start-up bias current is drawn from this pin too. Connect 6-10 DRAIN to a PCB copper area to facilitate the heat dissipation. DS13192 - Rev 2 page 2/20