Overview
The VIPER26HD, produced by STMicroelectronics, is a smart high voltage converter that integrates an 800 V avalanche-rugged power MOSFET with PWM current mode control. This device is part of the VIPer plus family and is designed to meet stringent energy-saving standards. It features low power consumption, burst mode operation under light load, and supports the design of flyback, buck, and buck boost converters. The integrated HV startup, sense-FET, error amplifier, and oscillator with jitter enable complete application designs with a minimum number of components.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Transistor Breakdown Voltage (V) | 800 | V |
| Drain Current (A) | 0.7 | A |
| Drain-Source On-State Resistance (RDS(on)) | 7 | Ω |
| Operating Frequency | 60 kHz ±4 kHz (L type), 115 kHz ±8 kHz (H type) | kHz |
| No-Load Power Consumption | < 30 mW @ 230 VAC | mW |
| Load Power Consumption | < 400 mW @ 230 VAC with 250 mW load | mW |
| Operating Junction Temperature Range | -40 to 150 | °C |
| Thermal Shutdown Temperature | 150 to 160 | °C |
Key Features
- 800 V avalanche rugged power MOSFET allowing a wide range of VAC input to be covered.
- Embedded HV startup and sense-FET.
- Current mode PWM controller.
- Minimized system input power consumption: less than 30 mW @ 230 VAC in no-load condition and less than 400 mW @ 230 VAC with 250 mW load.
- Limiting current with adjustable set point.
- Jittered switching frequency to reduce EMI filter cost: 60 kHz ±4 kHz (L type) and 115 kHz ±8 kHz (H type).
- Embedded error amplifier.
- Hysteretic thermal shutdown.
- Built-in soft-start for improved system reliability.
- Protections with automatic restart: overload/short-circuit (OLP), feedback loop disconnection.
Applications
- Auxiliary power supply for appliances.
- Power metering.
- LED drivers.
- SMPS for set-top boxes, DVD players, and recorders.
Q & A
- What is the breakdown voltage of the VIPER26HD?
The breakdown voltage of the VIPER26HD is 800 V.
- What are the operating frequencies of the VIPER26HD?
The operating frequencies are 60 kHz ±4 kHz (L type) and 115 kHz ±8 kHz (H type).
- What is the no-load power consumption of the VIPER26HD at 230 VAC?
The no-load power consumption is less than 30 mW at 230 VAC.
- Does the VIPER26HD have built-in thermal protection?
- What types of converters can be designed using the VIPER26HD?
The VIPER26HD supports the design of flyback, buck, and buck boost converters.
- What is the typical drain current of the VIPER26HD?
The typical drain current is 0.7 A.
- Does the VIPER26HD have automatic restart after a fault condition?
- What is the maximum operating junction temperature of the VIPER26HD?
The maximum operating junction temperature is 150°C.
- Does the VIPER26HD support burst mode operation?
- What is the purpose of the jittered switching frequency in the VIPER26HD?
The jittered switching frequency reduces the EMI filter cost.
