STK760-216-E

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Power Factor Correction (PFC) is an important part of power supply technology. It is used to improve the efficiency of power supply systems while decreasing emissions and power losses. The STK760-216-E integrated circuit is a PFC circuit that can be used to improve the quality of the power supply while simplifying the system design and reducing the number of components needed. In this article, we\'ll discuss the application field and working principle of the STK760-216-E.

Application Field

The STK760-216-E is designed for use in AC-DC switching power supplies and DC-DC converters. It is especially suitable for applications that require high-efficiency and power factor correction such as LED lighting, digital signage, and general office equipment. It can also be used in solar power systems and off-line power supplies. The STK760-216-E is capable of delivering a continuous current of 10A with a peak current of 15A. It is available in a compact 8-pin package and has a wide operating temperature range of -40°C to +85°C.

Working Principle

The STK760-216-E employs a unique PFC control method to reduce power losses and improve system efficiency. It uses a single-stage PFC based on a pulse-width modulation (PWM) technique with a current-mode control. The device incorporates an internal Power Lossless Control (PLC) circuit, which allows it to operate without an external loss Compensation circuit. This reduces the overall system cost and improves system efficiency. The constant on-time control of the PWM increases system reliability and decreases the need for complicated compensation circuits.

The STK760-216-E features an internal low dropout (LDO) regulator that supplies a stable bias voltage for the PFC control circuitry. It also features a voltage clamping circuit to reduce the input voltage level when the input exceeds a predetermined level. It also features a soft-start circuit to reduce start-up surge current. The device also features several protection mechanisms, including over-current protection and short-circuit protection.

The STK760-216-E offers low standby power consumption, low EMI emissions, and excellent power factor correction performance. It is RoHS compliant and has an operating temperature range of -40°C to +85°C. It is available in a compact 8-pin package and is ideal for applications that require high efficiency and power factor correction.

Conclusion

The STK760-216-E is an integrated PFC circuit that can be used to improve the efficiency and power factor of AC-DC switching power supplies and DC-DC converters. It features a unique PWM control scheme, an internal LDO regulator, a voltage clamping circuit, and several protection mechanisms. It offers low standby power consumption, low EMI emissions, and excellent power factor correction performance. It is RoHS compliant and has an operating temperature range of -40°C to +85°C. It is ideal for applications that require high efficiency and power factor correction.

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