VIPER35HE

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The VIPER35HE is a high-efficient, monolithic, mixed-signal, integrated power converter. It is able to operate in either a buck (step down) or boost (step up) configuration with near zero voltage switching. It is optimized for a wide input voltage range of 5V to 36V in buck mode, while allowing operation in up to 72V input in boost mode. The device is featuring 9V to 14V fixed output voltage range, with programmable output current of up to 3A.

The VIPER35HE is a P-channel high-side MOSFET controller with an integrated high-frequency gate driver, which simplifies the external components required. In addition, the device is incorporating thermal protection circuit and low dropout current limit, providing high reliability in extreme conditions. The high-efficiency VIPER35HE is suitable for any application requiring a dc-dc converter in either buck or boost configuration.

Application field and working principle: The VIPER35HE is widely used in industrial, communications, consumer and automotive applications. Its wide input voltage range, high efficiency and low dropout current limit make the device suitable for voltage conversions from dc inputs to the power ranges between 5V and 72V. Its high-efficiency and low maximum on-state resistance of the internal MOSFET, further simplify external design and provide excellent low ESR noise performance in the output.

The device works by converting energy from a dc input source to a dc output. It performs high frequency voltage transformation and voltage regulation. When fed an alternating current, the device uses multiple power transistors to rectify it, producing a dc output. The device then regulates the output voltage to a predetermined level. This can be achieved by either a buck or a boost topology.

The buck topology used by the VIPER35HE is a flyback converter with synchronous rectification. The device utilizes MOSFETs to switch current between the input and output. The output voltage is regulated by a feedback loop from the output. In boost topology, the device switches voltage from the input to the output by using an inductor, a capacitor and an output clamp.

The VIPER35HE reduces the need for external components, which make it an ideal choice for applications demanding maximum space savings and minimum number of components. The device provides advanced features such as simultaneous Pulse Width Modulation (PWM) and Pulse Frequency Modulation (PFM) control, as well as its output voltage regulation as low as 9V.

The VIPER35HE is a high-efficiency, high-performance dc-dc converter, suitable for many applications requiring cost-effective power conversion solutions with low noise. It provides excellent efficiency, power capacity and protection features, making it the ideal choice in high current automotive, consumer electronics and industrial applications.

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