FSCQ1565RPVDTU

PMIC - AC DC Converters, Offline Switchers: FSCQ1565RPVDTU Application Field and Working Principle

FSCQ1565RPVDTU is a high-efficiency offline switching regulator controller with built-in power MOSFET. It integrates constant off-time current-mode control, low operating current and low operating temperature. It\'s suitable for AC/DC flyback converters, offline buck converters and other AC/DC power supplies.

Application Field

FSCQ1565RPVDTU is able to address a wide range of AC/DC switching applications. It is a highly integrated, low-cost and cost-effective solution for applications such as telecom, set-top boxes, LCD displays and industrial electronics. It can be easily applied to other DC/DC power converter solutions through the integrated PWM controller. Furthermore, it can also be used to improve the inside circuit of existing setups by providing high efficiency with low operating cost.

Working Principle

FSCQ1565RPVDTU operates on the principle of constant off-time zoom current mode control. It is able to control the current flow of its MOSFET with high accuracy and provides high efficiency. This is done by the use of a low-ripple current feedback controller, over-current protection circuit, over-temperature protection circuit, PWM comparator, drive circuit and external compensation network.

The constant off-time zoom current mode control in FSCQ1565RPVDTU greatly improves the overall efficiency of its MOSFET. It also allows for a highly accurate start-up, stable output voltage and low switching losses. The current-detection and control of the FSCQ1565RPVDTU also ensures that the MOSFET is always within its safe operating temperature range.

Features

The FSCQ1565RPVDTU provides several features for DC/DC power conversion:

• High efficiency: The built-in MOSFET operates with high efficiency and low switching losses.
• Wide input voltage range: The FSCQ1565RPVDTU has a wide input voltage range of 75V to 550V.
• Integrated PWM controller: The PWM Controller allow engineers to quickly and easily implement AC/DC and DC/DC switching power supplies.
• Low operating current and temperature: The FSCQ1565RPVDTU has a low operating current of only 2.4mA and a low operating temperature of -20°C to +85°C.
• High accuracy: The FSCQ1565RPVDTU provides a high degree of accuracy with its constant off-time zoom current mode control.

Conclusion

FSCQ1565RPVDTU is a high-efficiency, high-accuracy, low-cost and cost-effective solution for AC/DC and DC/DC switching power supplies. Its implementation of constant off-time zoom current mode control ensures high efficiency, low switching losses and stable output voltage. These combined with its wide input voltage range, low operating current and temperature make the FSCQ1565RPVDTU a great choice for AC/DC and DC/DC switching power supplies.