PS8A0011PE

Series:	*
Part Status:	Obsolete

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PS8A0011PE Application Field and Working Principle

Introduction

The PS8A0011PE is a high efficiency step-down DC/DC converter developed for use in a wide range of applications such as automotive, communications, and consumer electronics. With its single power supply, wide operating voltage from 4.5V to 20V and high switching frequency of 1.2MHz, the PS8A0011PE provides high efficiency with low quiescent current and low EMI (electromagnetic interference) operation.

Application Field

The PS8A0011PE is a wide input voltage step-down DC/DC converter with a wide operating voltage range of 4.5V to 20V. This makes it suitable for a wide range of applications such as automotive, communications, and consumer electronics.In automotive applications, the PS8A0011PE is used to convert the 12V or 24V primary battery voltage to a variety of low voltage DC output. It can be used in automotive infotainment systems, Advanced driver assistance systems (ADAS), powertrains, and body electronics, etc.In communication applications, the PS8A0011PE converter can be used for the LNBs (Low Noise Block down converter) power supply, amplifiers and filters. In consumer electronics, the PS8A0011PE can be used for the power supply of LED/LCD displays, Li-Ion battery charging, etc.

Working Principle

The PS8A0011PE adopts the synchronous step-down switching converter topology. This topology includes an n-MOSFET, a p-MOSFET and a low power, low dropout (LDO) linear regulator. The n-MOSFET and p-MOSFET operate in a continous conduction mode, while the linear regulator works in a diode-orien mode.When the input voltage is applied to PS8A0011PE, the n-MOSFET turns on and current begins to flow through the inductor. As the n-MOSFET turns off and p-MOSFET turns on, the inductor stores the energy and releases it to the output capacitor and load. The regulated output voltage is regulated by a constantly adjusting duty cycle and the output voltage can be adjusted by an external resistive voltage divider. The fault protection of the PS8A0011PE includes soft-start, over-voltage protection, over-current protection, under voltage protection and thermal shutdown.The PS8A0011PE features a low quiescent current, a high efficiency of up to 95%, a wide input voltage range, an adjustable switching frequency of 1.2MHz and an integrated 200mΩ N-FET for high performance.

Conclusion

The PS8A0011PE is a high efficiency step-down DC/DC converter developed for a wide range of applications such as automotive, communications, and consumer electronics. With its wide operating voltage range from 4.5V to 20V and high switching frequency of 1.2MHz, the PS8A0011PE provides high efficiency with low quiescent current and low EMI (electromagnetic interference) operation. It is capable of regulating output voltages with accuracy of ±1.5%, making it suitable for various demanding applications.

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