MPQ4570GF-AEC1

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The MPQ4570GF-AEC1 is a digital, step-down, and synchronous-rectified DC/DC switching regulator that can be used in nearly any voltage and power regulation application due to its flexibility. This regulator is suitable for applications that require a wide input voltage range, low quiescent current, high efficiency and small form factor.

Features

• Wide 4.5V to 18V input voltage range
• Output voltage range from 0.8V to 5.5V
• Up to 6A output current
• Delayed soft-start
• 2MHz Pulse-Frequency Modulation (PFM)
• Burn-in; over-voltage, and over-temperature protection
• Output voltage tracking
• Internal compensation circuit
• PWM/PFM operation mode
• Integrated low-side and high-side MOSFETs

Application Field

MPQ4570GF-AEC1 DC/DC switching regulators are used in a wide range of applications, such as automotive, industrial, telecom, and other power regulation application, to convert higher voltage to the required value. This highly efficient regulator provides up to 6A output current while maintaining its low quiescent current, high efficiency, and small form factor.

The device’s wide input voltage range of 4.5V to 18V enables direct connection to batteries, DC sources, and AC line voltages. The output voltage range of 0.8V to 5.5V makes it a suitable choice for low-voltage applications, such as logic units, processors, and memory circuits.

MPQ4570GF-AEC1 DC/DC switching regulators are also widely used in automotive, medical, and telecom applications, where an efficient and reliable voltage regulator is required. Its2MHz PFM switching frequency allows it to be used in high-frequency circuits, such as motor control and LED lighting, which require fast response time.

Working Principle

MPQ4570GF-AEC1 DC/DC switching regulators are based on the PFM technique. This type of regulator works by changing the output voltage level through switching the switches. In this case, the switching frequency is determined by the input voltage and the output voltage.

The regulator is comprised of four main components: an internal control circuit, two MOSFETs (high-side and low-side), and an external compensation network. When the high-side MOSFET is on, the energy from the input voltage and current is stored in the inductor, and when the low-side MOSFET is on, the stored energy is transferred to the output. Thus, PFM control of the output voltage level is achieved by controlling the ON/OFF timing of the MOSFETs.

The output voltage is generated by the internal comparator circuit, which is programmable by the external compensation network. This compensator works by comparing the output voltage to the internal reference voltage and adjusting the ON/OFF timings accordingly to achieve the desired output voltage regulation.

The MPQ4570GF-AEC1 DC/DC switching regulator also provides additional features, such as an adjustable soft-start timing, over-voltage protection, over-temperature protection, and output voltage tracking. These features make it a highly efficient, reliable, and cost-effective solution for various power regulation applications.

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