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PMIC - Voltage Regulators - DC DC Switching Regulators

The MPQ2166GD-AEC1-P is a DC DC switching regulator from Maxim Integrated, a leading integrated circuit producer. It is a fixed-frequency off-line fly-back regulator designed for low cost and ease-of-use. It is part of the wider ‘Precision Power’ series of products, designed to provide a power supply solution for a wide range of different applications.

Specifications

The MPQ2166GD-AEC1-P has a maximum output current of 1.5 amps and an adjustable output voltage between 0.5V and 6.5V. It also incorporates an over-current, overtemperature, and overvoltage protection. Additional features include adjustable soft‑start, a shutdown mode and an adjustable maximum average on‑time.

Applications

The MPQ2166GD-AEC1-P is suitable for a range of different applications. It can be used for powering anything from low voltage applications, such as CPU, memory, and FPGA circuits, to mid- and high-voltage monolithic solutions, such as satellite transceivers, telecom base power solutions, and automotive telematics systems.

Working Principle

The MPQ2166GD-AEC1-P works on the fixed-frequency off-line fly-back principle. It uses a high voltage MOSFET in the primary side, and a low voltage MOSFET in the secondary side. The high voltage MOSFET is connected to the main power source and turned on and off by the primary control signal. The voltage control signal on the primary side is then used to control the duty cycle of the high MOSFET, which in turn controls the power delivered to the output. Once the power is delivered to the output, the low voltage MOSFET can be turned on or off through the secondary control signal to control the output voltage. This allows the output voltage to be adjusted while the primary circuit is held in a steady state.

The MPQ2166GD-AEC1-P also has a number of features that help increase efficiency and reduce power losses. It utilizes a pulse-width modulation (PWM) control to optimize output voltage regulation. It also features an over-current protection, overtemperature protection, and an adjustable soft-start. It also includes several additional features, such as an adjustable maximum average on-time, a shutdown mode, and an output voltage adjustable between 0.5V and 6.5V.

Conclusion

The MPQ2166GD-AEC1-P is a fixed-frequency off-line fly-back DC DC switching regulator designed for low cost and ease-of-use. It is suitable for a range of applications, from low voltage applications, such as CPUs and memory chips, to mid- and high-voltage monolithic solutions, such as satellite transceivers, telecom base power solutions, and automotive telematics systems. It utilizes a high voltage MOSFET in the primary side, and a low voltage MOSFET in the secondary side to allow for adjustable output voltage. It also has a number of features to increase efficiency and reduce power losses, such as an adjustable soft-start, over-current protection, overtemperature protection, and an adjustable maximum average on-time.

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