P9028-0AWGI8

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Applications:	Wireless Power Receiver
Current - Supply:	--
Voltage - Supply:	--
Operating Temperature:	0°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	--
Supplier Device Package:	36-WLCSP (3.1x2.9)

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Introduction

P9028-0AWGI8 is a special power management integrated circuit (PMIC) developed for automotive applications. It provides multiple independent supply voltage rails controlled by an integrated voltage regulator and a digital interface. It can support up to two power supply channels with up to four output voltages. The P9028-0AWGI8 integrates a wide range of features to enable use in automotive applications, including over-voltage protection (OVP) and under-voltage protection (UVP).

Application Field and Working Principle

The P9028-0AWGI8 is a PMIC solution optimized for automotive applications. It is used to provide a regulated output voltage to power systems and components, such as parking assistance systems, LCD displays, audio systems, navigation systems, engine control units and other electronics.The P9028-0AWGI8 operates according to the buck-boost converter topology. Buck-boost converters have the ability to both step up and step down an input voltage based on the given load requirements. The P9028-0AWGI8 contains a dual-channel control loop, which switch the input power between two switching converters in order to regulate both the output current and the output voltage.The overall regulation is performed by digitally controlling the switching frequency of the two switching converters and adjusting the duty cycle of each switching converter. The dual-channel control loop comprises separate current sensing loops and voltage sensing loops. The current sensing loop detects the amount of current flowing through the load and adjusts the duty cycle of the switches based on the load current. The voltage sensing loop monitors the output voltage and adjusts the switching frequency of the two switching converters based on the output voltage.The P9028-0AWGI8 also includes two I2C-compatible communication buses to control the power management settings and monitor the status of the load and input voltage. It contains a range of features to protect the system, such as over-voltage protection (OVP) and under-voltage protection (UVP), as well as short-circuit protection (SCP).

Conclusion

The P9028-0AWGI8 is an optimized PMIC for automotive applications. It offers a complete solution for the power management of automotive systems and components with the ability to support up to two power supply channels with up to four output voltages. The P9028-0AWGI8 can operate according to the buck-boost converter topology and contains a full range of features, such as over-voltage protection (OVP) and under-voltage protection (UVP), as well as a digital interface with two I2C-compatible communication buses.

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