VIPER013HSTR Integrated Circuits (ICs)

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VIPER013HSTR Application Field and Working Principle

The VIPER013HSTR is a high-end Power Management IC (PMIC) that puts forth a high level of performance against stringent power-management requirements. It offers a range of features and functions, including power-stage and power-management control, voltage and current regulation, and inrush-current limiting, making it the perfect choice for power electronics applications. The VIPER013HSTR is a step in a new direction, allowing designers to implement the highest levels of performance in their products while meeting stringent requirements.

Overview of the VIPER013HSTR Application

The VIPER013HSTR falls into the PMIC - AC DC Converters, Offline Switchers category. This PMIC has the ability to control AC and DC power conversion stages and is designed for adjustable, non-isolation off-line and non-tracking (unregulated) switching power supplies for applications up to 12W. The device provides a powerful, integrated, low-power solution with several benefits.

The VIPER013HSTR is featuring a Secondary-Side Regulator (SSR) which reduces the number of components necessary and has a very fast response resulting in improved reliability and switching frequency adjustment. Its integrated control functions, small size, and high internal power ratings make this device ideal for applications with limited board space or energy constraints. It features an analog-controlled PWM architecture and digital circuitry to enable rapid changes in output voltage. The PWM signal can be programmed using either analog or digital signals. The device includes a wide range of protection features, including inrush current limiting, over-current protection, overtemperature protection, open load protection, and load disconnection.

Working Principle of VIPER013HSTR

The working principle of the VIPER013HSTR is based on a PWM architecture, with a maximum frequency of 500 kHz and a minimum frequency of 100 kHz. The frequency is adjustable, allowing for optimization of the power supply design. The device operates in one of two modes: Discontinuous Conduction Mode (DCM) or Continuous Conduction Mode (CCM). DCM mode is used for low loads and offers lower current ripple and inductor size, whereas CCM mode is more suitable for higher load conditions and provides a greater level of output current stability.

The VIPER013HSTR features two integrated control loops which enable it to regulate its output power. The first loop is a voltage-mode control loop, which controls the output voltage. It consists of an error amplifier and an analog-controlled PWM comparator. The second loop is an average current-mode control loop, which regulates the output current. This loop is enabled by the small design and low power requirements of the device and its large peak current capability. It consists of a current-sense amplifier and an adjustable over-current comparator.

The VIPER013HSTR includes many protection features to protect the device and the system it is connected to. These features included inrush current limiting, over-current protection, over-temperature protection, open-load protection, cycle-by-cycle current limiting, and load disconnection. The device also features a programmable EMI filter and a startup delay timer which can be used to adjust the switching frequency of the device.

The VIPER013HSTR is capable of providing up to 12 W of output power, along with efficient and reliable performance. It is an ideal solution for a wide range of applications, including telecom, industrial, and consumer electronics where high performance and reliability are essential. The device offers a simple, cost-effective solution for DC/DC power converters.

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