S-8533A45AFT-TB-U

Introduction to S-8533A45AFT-TB-U

The S-8533A45AFT-TB-U is a highly integrated Pulse Width Modulation (PWM) controller designed to provide power factor correction (PFC) and DC-DC converter solutions in off-line power converter applications. The device features such as MPFC, power supply protection, frequency synchronization, over-temperature protection, low on-resistance, and low contrast voltage make the S-8533A45AFT-TB-U a versatile PWM controller.

Application Field of S-8533A45AFT-TB-U

S-8533A45AFT-TB-U Power Factor Correction (PFC) controller provides different functions for general-purpose PFC applications such as LED light, Power Supplies, and other consumer electronic products that require high power factor and efficiency. MPFC provides a fast and accurately controlled PFC boost current while minimizing the component count and cost. The high performance DC/DC converter also provides many functions like using pre-bias voltage, burst frequency, wide operating range, and frequency synchronization to give users system flexibility in their DC/DC design. The wide operating range makes the S-8533A45AFT-TB-U suitable for a range of applications such as lighting, telecom, consumer electronics, PC, LCD monitors, and Industrial.

Working Principle of S-8533A45AFT-TB-U

The working principle of the S-8533A45AFT-TB-U is to drive power switch devices like MOSFET or IGBTs to convert AC (or DC) input voltage into a DC output voltage. The S-8533A45AFT-TB-U uses a phase-shift technique to control the input current of a boost converter. The phase-shift technique is a complex but efficient strategy to control the power converter without an input current measurement circuit. The wide range of operating frequencies, operating temperature, and 5KV pulse width modulation (PWM) signal make S-8533A45AFT-TB-U suitable for different types of designs.

The S-8533A45AFT-TB-U also offers the user with an adjustable over-temperature protection (OTP). The OTP will be triggered when the chip temperature, thermal derating of power switch and input under-voltage are all above their threshold. This gives protection from the thermal issue and gives maximum life of the system.

Conclusion

The S-8533A45AFT-TB-U is an advanced PWM integrated controller for Power Factor Correction (PFC) and DC-DC switching controllers. The S-8533A45AFT-TB-U is suitable for a wide range of applications such as LED lights, Power Supplies, and other consumer electronic products that require high power factor and efficiency. The device features such as MPFC, frequency synchronization, over-temperature protection, low on-resistance, and low contrast voltage make the S-8533A45AFT-TB-U a versatile PWM controller.