Overview
The VIPER26LDTR, 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 with very low power consumption and burst mode operation under light load conditions.
The VIPER26LDTR supports the design of flyback, buck, and buck-boost converters with a minimal number of external components, thanks to its integrated HV startup, sense-FET, error amplifier, and oscillator with jitter.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Transistor Breakdown Voltage (V) | 800 | V |
| Drain Current (A) | 0.7 | A |
| RDS(on) (Ω) | 7 | Ω |
| Operating Frequency | 60 kHz (L type), 115 kHz (H type) | kHz |
| Standby Power | < 50 mW at 265 VAC | mW |
| Operating Junction Temperature Range | -40 to 150 | °C |
| Thermal Shutdown Temperature | 150 to 160 | °C |
| Package | SO-16 narrow | |
| Packing Type | Tape and reel |
Key Features
- 800 V avalanche rugged power MOSFET allowing a wide range of input voltages
- Embedded HV startup and sense-FET
- Current mode PWM controller with frequency jittering to reduce EMI filter cost
- Minimized system input power consumption: less than 30 mW at 230 VAC in no-load condition and less than 400 mW at 230 VAC with a 250 mW load
- Limiting current with adjustable set point
- 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
- Industrial applications
Q & A
- What is the breakdown voltage of the power MOSFET in the VIPER26LDTR?
The breakdown voltage of the power MOSFET is 800 V.
- What are the operating frequencies of the VIPER26LDTR?
The operating frequencies are 60 kHz for the L type and 115 kHz for the H type.
- What is the standby power consumption of the VIPER26LDTR?
The standby power consumption is less than 50 mW at 265 VAC.
- Does the VIPER26LDTR have built-in thermal protection?
Yes, it has hysteretic thermal shutdown.
- What types of converters can be designed using the VIPER26LDTR?
The device supports the design of flyback, buck, and buck-boost converters.
- How does the VIPER26LDTR reduce EMI?
The device uses frequency jittering to reduce EMI filter costs.
- What is the typical RDS(on) of the power MOSFET?
The typical RDS(on) is 7 Ω.
- Does the VIPER26LDTR have automatic restart after a fault condition?
Yes, it has protections with automatic restart for overload/short-circuit and feedback loop disconnection.
- What is the operating junction temperature range of the VIPER26LDTR?
The operating junction temperature range is -40 to 150 °C.
- What package types are available for the VIPER26LDTR?
The device is available in SO-16 narrow packages with tape and reel packing.
