MPQ4423HGQ-P Integrated Circuits (ICs)

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MPQ4423HGQ-P is a DC DC switching regulator from PMIC-Voltage Regulators family, which are designed and made by Freescale Semiconductor. It is a highly integrated, space-saving and cost-effective solution for DC/DCin multiple applications. It provides a wide input voltage range of 5V to 30V and offers two output voltages of 3.3V and 5V. The MPQ4423HGQ-P chip offers a number of features that reduce time-to-market, minimize board space and optimize power savings. Its power conversion efficiency is up to 95%. Its switching frequency is adjustable from 300kHz to 2.0MHz, which is suitable for a wide variety of applications as well

Applications

The thermally efficient MPQ4423HGQ-P DC-DC switching regulator is an ideal solution for automotive, computing and industrial applications. It is a great choice for powering DC/DC applications with a high voltage power source and has been designed to meet the stringent automotive-grade logic requirements for computing applications. It is also suitable for industrial applications, such as power supplies, solid-state drives, desktops, servers, point-of-load (POL), instrumentation, and HVAC.

Working Principle

The MPQ4423HGQ-P is a DC/DC switching regulator that operates as an adjustable buck converter. It contains a power switch implemented with an internal PMOS transistor, which is driven from a stable frequency oscillator operating from 300kHz to 2.0MHz. The internal oscillator adjusts the converter frequency to optimize the converter efficiency and allow very fast transient times. The MPQ4423HGQ-P uses PWM hysteretic control to optimize the efficiency and provide fast transient response time.

The MPQ4423HGQ-P has an integrated current source that senses the current through the inductor, and adjusts the duty cycle of the power switch accordingly. This feature increases the power conversion efficiency and reduces the switching losses while maintaining a very fast transient response time. In addition, the MPQ4423HGQ-P is protected from current overload and undervoltage lockout. It also offers thermal shutdown protection and a programmable soft start.

The MPQ4423HGQ-P also provides a PGOOD signal for system monitoring and an EXTVCC pin for regulation of the power switch corner frequency.

In summary, the MPQ4423HGQ-P is a DC/DC switching regulator with robust features and a wide input voltage range of 5V to 30V. Its efficiency is up to 95% and the adjustable switching frequency range is from 300kHz to 2.0MHz. The device is suitable for a wide variety of automotive, computing and industrial applications, such as power supplies, solid-state drives, desktops, servers, point-of-load (POL), instrumentation, and HVAC.

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