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 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 diagramProduct status link Vcc DRAIN VIPER222 Product label Istart-up OSCILLATOR SOFTSTART 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. Document Outline Cover image Product status link / summary Features Application Description 1 Pin setting 2 Typical power capability 3 Electrical and thermal ratings 4 Electrical characteristics 5 Typical electrical characteristics 6 General description 6.1 Startup 6.2 Feedback loop 6.3 Pulse skipping 6.4 Burst mode at light load 6.5 Short-circuit protection 6.6 VCC clamp protection 7 Basic application schematics 8 Package information 8.1 SSOP10 package information Revision history Contents List of tables List of figures
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