VIPER222

VIPER222 Datasheet High voltage converter Product status link VIPER222 Product label Features 730 V avalanche rugged power MOSFET PWM controller 1.2 V reference voltage Frequency jittering 40 mW no load input power at 230 VAC 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 Vcc DRAIN SOFT START EA-IN 1.2V OCP BLOCK + E/A Istart-up PWM LOGIC OSCILLATOR SQ R DIS PROTECTIONS EA-OUT Rsense GND DS13192 - Rev 2 - January 2020 For further information contact your local STMicroelectronics sales office. www.st.com VIPER222 Pin setting 1 Pin setting Figure 2. Connection diagram GND VCC NC EA-IN EA-OUT 1 2 3 4 5 10 DRAIN 9 DRAIN 8 DRAIN 7 DRAIN 6 DRAIN SSOP10 1 2 3 4 5 6-10 Name GND VCC NC EA-IN EA-OUT DRAIN Table 1. Pin description Function Connected to the source of the internal power MOSFET and controller ground reference. Supply voltage of the control section. This pin provides the charging current of the external capacitor....