MP2617HGL-Z Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Lithium-Ion
Number of Cells:	1
Current - Charging:	Constant - Programmable
Programmable Features:	Timer
Fault Protection:	Over Temperature
Charge Current - Max:	3A
Battery Pack Voltage:	4.2V
Voltage - Supply (Max):	14V
Interface:	USB
Operating Temperature:	-40°C ~ 125°C (TJ)
Package / Case:	20-TFQFN
Supplier Device Package:	20-QFN (3x4)

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Introduction to PMIC – Battery Chargers

Power management integrated circuits (PMICs) are electronic components that are used in numerous electronic equipment to manage power and enable proper functioning of devices. PMICs are ultra-integrated, single-package integrated circuits that can maximize power efficiency and system performance. Battery chargers are one of the most important applications of power management ICs. Battery chargers have become increasingly popular with the growing demand for portable electronic devices and consequently the need for faster and more efficient battery charging. The MP2617HGL-Z is one such high-efficiency DC/DC synchronous step-down battery charger designed to operate over a wider input range than traditional chargers.

Overview of the MP2617HGL-Z:

The MP2617HGL-Z is a complete synchronous buck battery charger solution integrated into one package. It is designed to charge a Li-ion or Li-Polymer battery directly from a USB power port or other power adapter. It offers a typical 90% efficiency and can charge up to 2A with fast transient response.The MP2617HGL-Z is capable of working with both USB and adapter types at 5V to 20V input voltage. The output voltage is adjustable from 4.4V to 28V for Li-ion and Li-polymer batteries. The charger is capable of Fast Charge, Precharge, and Trickle Charge modes ensuring reliable and safe operation of gadgets like smartphones, tablets, portable media players, digital cameras, and other portable devices.

Working Principle of the MP2617HGL-Z

The MP2617HGL-Z is a step-down battery charger which uses the buck voltage conversion topology for the charging process. The buck topology is a type of DC to DC conversion topology in which the output voltage is lower than the input voltage. It takes advantage of switching waveforms in order to transform the voltage levels.In the MP2617HGL-Z, the buck topology is employed in order to regulate the input voltage to an appropriate voltage for charging the battery. A high speed MOSFET switch is controlled by an internal oscillator in order to vary the switch ON and OFF intervals. The ON/OFF intervals generate a pulse-width modulated AC voltage waveform which is applied to the primary of an isolated transformer. The output from the transformer is rectified, filtered, and output through one or more secondary outputs.The MP2617HGL-Z also contains several safety features such as overvoltage protection, undervoltage protection, thermal protection, and loading protection. All these features ensure that the battery charging process is both safe and efficient.

Conclusion

The MP2617HGL-Z is a high efficiency DC/DC synchronous step-down battery charger designed for Li-ion and Li-polymer batteries. It can operate over a wide input range from 5V to 20V and can charge up to 2A with fast transient response. The MP2617HGL-Z uses buck topology for the charging process and contains several safety features to ensure safe operation. It is a perfect solution for powering portable electronic devices such as smartphones, tablets, portable media players, and digital cameras.

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