MP1567DQ-LF-Z

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The MP1567DQ-LF-Z is a low-cost, high-efficiency step-down DC-DC switching regulator designed to provide designers with the highest performance power solution in a small, cost-effective form factor. It is designed to convert input voltages of 2V to 10V to output voltages of 0.5V to 3.2V with up to 12A of output current. The MP1567DQ-LF-Z is capable of providing a high level of efficiency, up to 91%, depending on the input voltage range.

Application Field

The MP1567DQ-LF-Z is suitable for a wide variety of applications, including portables electronics, power supplies, gadgets, and any application that requires a low-cost, reliable, compact and stable DC-DC power solution. The MP1567DQ-LF-Z also features low standby current and low operating current, which makes it an ideal choice for applications with stringent power requirements.

Features

• High efficiency up to 91%
• Input voltage between 2V and 10V
• Output voltage between 0.5V and 3.2V
• Output current up to 12A
• Low standby current
• Low operating current
• Small, cost-effective form factor
• Wide temperature range
• High reliability

Working Principle

The MP1567DQ-LF-Z is a synchronous buck converter, which means that a PFM/PWM converter is used to control the output current using a fixed frequency modulation. The MP1567DQ-LF-Z also features an adjustable frequency with a range of 200KHz-1.2MHz. The converter consists of a voltage regulator, a controller, a driver and an oscillator. The regulator converts the input voltage to a desired output voltage, the controller sequences the operation of the converter to ensure that the desired output voltage is maintained, the driver controls the power switch to generate the output voltage, and the oscillator controls the PWM frequency.

The MP1567DQ-LF-Z utilizes a current mode control to regulate the output voltage and to improve the overall performance. The current mode control typically uses a current sense resistor to sense the output current, and feedback resistors to complete the voltage loop. The output voltage is maintained at the desired value by regulating the ratio of the feedback resistors, which results in a fixed output voltage.

Protection Features

The MP1567DQ-LF-Z is capable of providing a wide range of protection features to ensure that the system is operating safely and reliably. The features include:

• Input Under-Voltage Lockout (UVLO) which prevents the device from operating in an unstable or hazardous condition
• Over-voltage protection (OVP) to protect the converter from excessive voltage
• Over-current protection (OCP) to protect the converter from excessive current
• Comprehensive short circuit protection with automatic retry

Conclusion

The MP1567DQ-LF-Z is a low-cost, high-efficiency, step-down DC-DC switching regulator. It is suitable for a wide variety of applications, including portable electronics, power supplies, and any application that requires a reliable, compact and stable DC-DC power solution. It features high efficiency up to 91%, input voltage between 2V and 10V, output voltage between 0.5V and 3.2V, output current up to 12A, low standby current, low operating current, and a wide temperature range. In addition, it provides a wide range of protection features to ensure that the system is operating safely and reliably.

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