MP1499GD-Z

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MP1499GD-Z Application Field and Working Principle

The MP1499GD-Z is a DC/DC buck converter integrated circuit (IC) with a wide range of applications in power management. This product is classified as part of the PMIC – Voltage Regulators – DC DC Switching Regulators, due to its wide operating range, comprehensive protections, low noise, low voltage dropping, and high efficiency.

The MP1499GD-Z has various features, including:

• Wide input voltage range: 4.5 V to 35 V.
• Wide output voltage range adjustable with an external resistor divider: 0.80 V to 25 V.
• High peak current of up to 6 A.
• High efficiency with the low switching losses.
• Over temperature, UVLO, OVP, and OCP protection.
• 3.3 V LDO for controller and phase oscillator.
• Package type: QFN16 (3.6 mm x 3.6 mm).

The MP1499GD-Z is mostly used in various power management applications such as portable electronic devices, audio systems, CCTV, game accessories, and consumer electronics. This product can control power supplies of various power levels, current, and voltage ranges.

Working Principle of MP1499GD-ZMP1499GD-Z is an advanced buck regulator with a maximum input voltage of 36 V and a minimum of 4.5 V. The power from the VIN is managed by buck action in which the input voltage is reduced in a resonant action process. A square wave oscillator is created to provide the Resonant Switch control. The current generated by the converter is limited by a current sense circuit, which also keeps track of the output voltage by setting the switching frequency.

The MP1499GD-Z allows an external Schottky diode to be connected in a synchronous rectifier configuration, which eliminates the power dissipation of the internal diode while preventing the flow of reverse currents. This helps to improve the device\'s overall efficiency and reduce its noise.

In addition, the MP1499GD-Z includes protection features including over temperature protection (OTP), under voltage lockout (UVLO), overvoltage protection (OVP), and overcurrent protection (OCP). The OTP is triggered when the die temperature exceeds the over-temperature threshold. UVLO limits operation of the device when the input voltage is below the UVLO threshold. When the input voltage exceeds the OVP trip level, the regulator is disabled and shut down, and when the output current is greater than its set threshold, the OVP is triggered and the device will be shut down.

Conclusion

The MP1499GD-Z is a DC/DC buck regulator IC with a wide range of applications in power management. It features a wide input voltage range, wide output voltage range, high peak current, high efficiency, and various protection features. The MP1499GD-Z is used to control power supplies of various power levels, current and voltage ranges. It also includes protection features including over temperature protection, under voltage lockout, overvoltage protection, and overcurrent protection. This product is classified as part of the PMIC – Voltage Regulators – DC DC Switching Regulators.

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