PFS7329H

Series:	HiperPFS™
Packaging:	Tube
Part Status:	Active
Mode:	Continuous Conduction (CCM)
Frequency - Switching:	--
Voltage - Supply:	10.2 V ~ 13.2 V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	16-SSIP, 13 Leads, Exposed Pad, Formed Leads
Supplier Device Package:	eSIP-16D

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PFS7329H application field and working principle

PMIC – PFC, or Power Factor Correction, is a technique used to increase the efficiency of an AC-powered system by improving and modifying the input current waveform. The technique is also used in some power supplies and inverters with electrical motors that require high inrush currents. The PFS7329H is a common power factor-correcting (PFC) controller integrated with the required features for a wide range of applications.The PFS7329H is designed for high performance AC-DC offline converters. It provides high accuracy power factor correction and Active PFC, and also provides a good transient response enabling high switching frequencies. The integrated cooling Fan control, Auto recoil start, and line compensation ensure an optimal performance. The PFS7329H is compatible with a variety of standard components like FETs, ICs, Opto-isolators, and Bipolar Transistors. The device is also tolerant to external component tolerances, ensuring an easy and accurate design. The PFS7329H is widely used in AC-DC power systems including desktop computers, notebook computers, LCD TVs and industrial applications. The PFS7329H features a digital average current mode PFC circuit, providing a precise power factor regulation loop and eliminating the need for an additional opto-coupler and drive circuitry. Its active PFC circuit automatically adjusts the power factor under varying line conditions, thus providing a highly reliable, efficient, and noise-free operation.The high precision current sense circuit of the PFS7329H corrects for component inaccuracies resulting in accurate power regulation. The precise current loop ensures an excellent response to rapid output voltage fluctuations eliminating the need for an external error amplifier. The integrated Fan controller, with its adjustable current sensing threshold ensure optimal cooling with minimal acoustic noise.The optimal design of the PFS7329H offers excellent protection against transient voltages, over temperature, and short-circuits. It also features precise programmable gate drive and soft-start. The PFS7329H can operate up to 475kHz and is available in the SOIC 16-pin package, making it ideal for high-performance applications with limited board space. In summary, the PFS7329H is a power factor-correcting (PFC) controller ideal for high-performance AC-DC offline converters. It offers excellent protection against transient voltages, over temperature, and short circuits. It provides also precise power factor correction and Active PFC, cooling fan control, auto recoil start, and line compensation. Furthermore, it features a precise current sense circuit, integrated fan controller, precise programmable gate drive, and soft-start. The PFS7329H also offers good transient response enabling high switching frequencies, and is generally compatible with a variety of standard components.

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