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News
High-Voltage Converter from STMicroelectronics Enables Ultra-Low-Consumption Power Supplies in Smart Home and Industrial Applications
2016-07-19 | ReturnThe new device belongs to the VIPerPlusTM family of high-voltage converters, now in its second generation, and exploits ST’s proprietary BCD (Bipolar-CMOS-DMOS) technology. BCD allows the integration in a single chip of a high-performance PWM controller with a high-voltage logic-level control transistor, protection and diagnostic circuitry, without significantly impacting the robustness and reliability of the power transistor.
The VIPER01 enables designers to meet the most stringent energy-saving standards[1], as it has very low power consumption and switches automatically to pulse frequency modulation under light load conditions. It can be used in fly-back, buck, and buck-boost converter topologies, while the integrated high-voltage start-up, sense-FET, error amplifier, and oscillator with jitter allow a complete application to be designed with the minimum number of external components.
Key features of the VIPER01 include:
。800 V avalanche-rugged Power MOSFET allowing ultra-wide VAC input range;
。Embedded HV start-up and sense-FET;
。Current mode PWM controller;
。Drain current limit protection;
。Wide supply-voltage range from 4.5V to 30V;
。Self-supply option allows auxiliary winding or bias components to be removed;
。Jittered switching frequency reduces the EMI filter cost;
。Embedded error amplifier with 1.2V reference voltage;
。Protections with automatic restart include overload/short-circuit, line or output OVP, maximum duty cycle counter, VCC clamp;
。Embedded thermal shutdown;
。Built-in soft-start for improved system reliability.
The VIPER01 comes with a set of tools including evaluation kits, application notes, and spice models to jumpstart more robust, safer, and cost-effective SMPS designs.
VIPER01 is available now in volume at a price of US$ 0.364 for 1,000 units.
For further information please visit www.st.com/viperplus
[1] These include the US Energy Star and the European EuP Lot 6 tier 2 from EC Ecodesign Directive.
Source:http://www.st.com/