ST’s high-voltage AC-DC converters combine an advanced pulse width modulation (PWM) controller with a high-voltage switch in a single package. This monolithic integration simplifies switch mode power supply (SMPS) design while reducing PCB space. Our portfolio covers application power solutions ranging from a few watts up to 100 W.
Most popular topologies, including quasi-resonant, flyback, and buck configurations are supported, covering both isolated and non-isolated designs. By minimizing external component count and integrating robust protection features, these converters help designers achieve the highest reliability targets at the lowest system cost.
Applications
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Product types
VIPerGaN series: The peak of power density
The VIPerGaN family marks the transition to 700 V GaN HEMT technology, delivering 50 W to 100 W output power in ultra-compact QFN packages (5x6 mm).
- Superior performance: High switching frequencies and efficiency (>95%) enable smaller, lighter PCBs and minimized magnetics.
- Seamless design: All devices are pin-to-pin compatible, allowing fast power scalability without redesigning the board.
The 65W device is also available in SO16n package.
Altair series
The Altair® series is categorized by MOSFET voltage ratings and specific regulation features to match your design needs.
- ALTAIR04 Series: Featuring a 900 V avalanche-rugged MOSFET, this series is optimized for primary-side constant voltage (CV) operations and includes protections against transformer saturation.
- ALTAIR05T Series: Integrating an 800 V MOSFET, this series offers both CV and CC regulation. It features unique Cable Drop Compensation (CDC) to maintain accurate voltage at the end of the output cable.
VIPerPlus series: Reliability and efficiency
Integrating an 800 V avalanche-rugged MOSFET, the VIPerPlus series is the benchmark for low standby consumption (>4 mW at 230 VAC).
- VIPerPlus Series 1, 6 & 22: Feature an integrated error amplifier for 5 V output regulation with minimum external components.
- VIPerPlus Series 5: Optimized for quasi-resonant topologies to maximise efficiency.
- VIPerPlus Series 7 & 8: Enhanced with brown-out protection and peak power capability to withstand temporary overloads conditions.
- VIPer0P: Features a unique zero-power mode, ideal for ultralow consumption IoT applications.
Benefits
- A plus in integration: Embedded HV start-up, SenseFET MOSFET, and jittered frequency for low EMI reduce component count by half.
- A plus in reliability: Built-in safeguards including thermal shutdown, soft-start, and 800 V /900 V/1050 V avalanche-ruggedness for harsh mains.
- A plus in efficiency: Best-in-class standby power and ultra-high efficiency (up to 95% with GaN) to meet the strictest energy regulations.
- Extreme power density: VIPerGaN enables power densities >25W/in³, supporting some of the smallest adapters in the industry.
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eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.
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• Specify input/output power for each node in the tree
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Thermal-electrical Simulators for Components
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• Build simple schematics and firmware inputs in minutes
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Signal Conditioning Design Tool
Active Filters
• Handles multi-stage-designs and common topologies
• Returns circuit component values
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Signal Conditioning Design Tool
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NFC/RFID Calculators
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