PS8A0027PE

Series:	*
Part Status:	Obsolete

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Introduction

Power Supply Integrator Company (PSIC), one of the biggest distributors in electronic components market, has recently launched a brand-new product, the PS8A0027PE. The integrated circuit is specially designed for Power Management applications and provides superior features along with robust reliability. The product combines a wide range of power supply and control functions, thus it can be used in different applications such as automotive, industrial, communications and consumer electronics. The PS8A0027PE operates with an ultra-low quiescent current of just 2mA and its switching frequency is up to 600KHz, so the designers can save a lot of space and keep the noise generated by the external components to a minimum.

Detailed description

The PS8A0027PE is a mid-voltage power management integrated circuit that offers two integrated buck converters and two integrated LDO regulators. It\'s specifically designed for application fields where high performance and cost effectiveness are both required as it provides complete power supplies through a single package. It uses both synchronous and non-synchronous architectures for various applications and a patent pending active hysteretic burst mode technology which offers high output accuracy and reduces power consumption in the system at light load.The overall output voltage for the buck converters can be adjusted with the built-in resistors or the PMBusTM digital interface. This PMBusTM interface enables a much higher level of system monitoring and control, allowing for improved system stability in many operations. It\'s also worth mentioning that the device features pre-bias start-up support which is supported by two individual input pins. This makes it possible to start-up the system in pre-bias condition.

Working Principle

The PS8A0027PE integrates two buck converters and two LDO regulators, all controlled by a proprietary PMBusTM interface. The buck converters use a synchronous rectification architecture to improve power efficiency and output accuracy, while the LDO regulators provide a small, low quiescent current solution for the system. The device adopts patent pending active hysteretic burst mode technology for constant-voltage or constant-current modes which can advancedly restore the current or voltage demand with minimum noise. For the buck converters, it also integrates special operation circuit and driver which can achieve smooth transition from PWM to PSM and burst operation mode.The PS8A0027PE also comes with special protection features such as overcurrent protection, thermal shutdown, input and output voltage protection, overvoltage protection, dynamic power limiting and brownout protection.

Conclusion

To sum up, the Power Supply Integrator Company’s PS8A0027PE is an excellent power management IC that integrates two buck and two LDO converters into a single package. It supports an ultra-low quiescent current of 2mA which helps to enhance system efficiency while keeping the noise generated by the external components to a minimum. The device also features pre-bias start-up support and a PMBusTM interface which allows for improved system stability in many operations.

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