CURN101-HF Discrete Semiconductor Products

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Today, rectifiers are used in many applications and are available in a wide range of shapes and sizes. The CURN101-HF (High Frequency) is a high-speed, single-phase, thyristor rectifier that offers up to 20A output current and up to 200kHz PWM frequency. This SMD (surface-mounted device) is ideal for a wide range of applications that require high current rectification with low output radiation, such as power supplies, chargers, and high-current switching. In this article, we will discuss the application field and working principle of the CURN101-HF.

Application Field

The CURN101-HF is designed for high current used in a wide range of applications. It is an ideal choice for applications such as PFC (Power Factor Control) and DC-AC power conversion circuits. It can also be used in motor control and other high-current applications. The device is capable of handling up to 20A of current and provides a stable output voltage with low losses. It is also highly reliable, with an operating temperature range of -40°C to 125°C. Due to its low EMI (electromagnetic interference) levels, it is a suitable choice for applications such as switching power supplies, DC-DC converters, and UPS (uninterruptible power supplies).

Working Principle

The CURN101-HF is a single-phase thyristor rectifier that provides a high output current and up to 200kHz PWM frequency. It is made up of four thyristor (also known as SCR) elements that are connected in series, and two free-wheeling diodes. The device has two operating modes: ON and OFF. When the device is in ON mode, the voltage across the thyristors is equal, enabling current to flow through the thyristors. When the device is in OFF mode, the current flow is blocked and the voltage across the thyristors is equal to the source voltage. The voltage across the free-wheeling diodes is zero, thus providing a zero voltage drop.

The device works by controlling the firing angle or, in other words, the application of control signals. The firing angle determines the flow of current in the circuit, controlling the voltage and frequency. When the firing angle is increased, current flows for a longer period of time, resulting in an increase in output power. The output power is, therefore, directly proportional to the firing angle. The device also includes a Safe Operating Area (SOA) circuit, which prevents the thyristors from overheating and, in turn, protects the device from damage.

Conclusion

The CURN101-HF is a high-speed, single-phase, thyristor rectifier with up to 20A output current and up to 200kHz PWM frequency. It is designed for use in a wide range of high current applications, such as PFC, DC-AC power conversion circuits, motor control, and switching power supplies. The device works by controlling the firing angle or, in other words, the application of control signals. It also includes a Safe Operating Area (SOA) circuit, which prevents the thyristors from overheating and, in turn, protects the device from damage.

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