DC2422A-B

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DC2422A-B evaluation boards are designed for applications that require a regulated single-output AC/DC power supply. The boards allow you to quickly evaluate the power supply’s performance and features, evaluate its stability, analyze its electrical characteristics, experiment with different waveforms, and troubleshoot the design. The versatile DC2422A-B evaluation boards offer adjustable output voltage, current limiting, and external loop compensation circuitry, making them ideal for evaluating complex power supply systems.

The DC2422A-B evaluation board consists of two separate boards, one for the primary and one for the secondary components, and can be operated from a single AC power mains. The board contains components such as diodes, switch-mode power MOSFETs, inductors, and capacitors, as well as a low-voltage AC/DC rectifier and a peak current mode, full- bridge AC/DC converter. The evaluation board is configured for a regulated single-output AC-DC power supply with an adjustable output voltage.

The working principle of the DC2422A-B evaluation board is based on the peak current mode full-bridge topology. In this topology, an inductor is connected to the input voltage, while the output voltage is sampled and feedback to the input via the PWM (pulse-width modulation) comparator. As the PWM comparator compares the reference voltage to the output voltage, its duty cycle will increase or decrease accordingly, regulating the output voltage. This control of the duty cycle is done through an external control circuit based on an error amplifier and corresponding compensation components.

The DC2422A-B evaluation board also features current-limiting circuitry to protect the power supply and the load in case of over-current. The board has an internal start-up timer, which ensures a smooth start of the power supply. The board comes with various safety features such as over-temperature protection, over-voltage protection, and surge protection, as well as various voltage and current sensing features.

The DC2422A-B evaluation board is suitable for any application that requires a regulated single-output AC/DC power supply. It is highly customizable and can be used to evaluate different waveforms and various power supply specifications, allowing designers to quickly and accurately assess their power supply designs. With its adjustable output voltage, current-limiting features, and external loop compensation circuitry, the DC2422A-B evaluation board is the perfect tool for evaluating and troubleshooting complex power supply systems.

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