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STMicroelectronics VIPER26 | Demoboard STEVAL-VP26K01B
15 V / 100 mA high voltage buck converter reference design based on VIPER26K
Overview
| Topology | Buck Converter |
| Input voltage | 60-870 V |
| Output 1 | 15 V / 0.1 A |
| IC revision | 1 |
Description
The device is a high voltage converter smartly integrating a 1050 V avalanche-rugged power section, with a PWM current mode control. The 1050 V-BV power MOSFET allows to extend input voltage range, and reduce the size of the DRAIN snubber circuit. This IC meets the most stringent energy-saving standards as it has very low consumption and operates in burst mode under light load.The integrated HV startup, sense-FET, error amplifier and oscillator with jitter allow a complete application to be designed with the minimum number of components.The VIPer26K supports the most common SMPS topologies such as: isolated flyback with optocoupler, primary-side regulation, non-isolated flyback with resistive feedback, buck, and buck boost.
Features
- 1050 V avalanche-rugged power MOSFET allowing ultra-wide VAC input range to be covered
- Embedded HV startup and sense-FET
- Current mode PWM controller
- Drain current limit protection:
- 500 mA (VIPER265K)
- 700 mA (VIPER267K)
- Jittered switching frequency reduces the EMI filter cost: 60 kHz ± 4kHz
- Standby power < 30 mW at 230 VAC
- Embedded E/A with 3.3 V reference
- Safe auto-restart after a fault condition
- Hysteretic thermal shutdown
- Built-in soft-start for improved system reliability
Typical applications
- Auxiliary power supply for appliances / SMPS for set-top boxes, DVD players and recorders
- Power metering
- LED drivers
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | L(µH) | IR(A) | ISAT,10%(A) | RDC max.(mΩ) | fres(MHz) | Version | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 50 V(DC), 1.5 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance1.5 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | |||||
 | WE-TI Radial Leaded Wire Wound Inductor, –, – | Downloads15 files EDA models: Components ZIP
Download all 15 files as zip archive | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TI Radial Leaded Wire Wound Inductor | – | – | – | Size1018 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length11 mm | Width11 mm | Height19 mm | – | – | Inductance1000 µH | Rated Current0.8 A | Saturation Current @ 10%1 A | DC Resistance860 mΩ | Self Resonant Frequency1.1 MHz | VersionHeat Shrinking Tube |