150W 一体化PC适配器解决方案.你知道吗？

NXP 公司的TEA1713集成了PFC控制器和半桥谐振转换器（HBC），通用火线输入电压70 V到276 V (AC)，具有过流保护（OCP），过压保护（OVP）和去磁传感，保证在所有条件下安全工作。HBC控制器集成了高压电压转移器，半桥开关频率最大为500KHZ，自适应的非重叠时间和突发模式开关，主要用在LCD TV，等离子电视和适配器。本文介绍了TEA1713主要特性，方框图，应用框图和250W LCD TV与70W 笔记本电脑适配器电源电路图，以及采用TEA1713和TEA1795 150W一体化PC适配器电路图，材料清单。

TEA1713 AND TEA1795 DEMO BOARD FOR 150 W ALL-IN-ONE PC ADAPTER

THE TEA1713 INTEGRATES A POWER FACTOR CORRECTOR (PFC) CONTROLLER AND A CONTROLLER FOR A HALF-BRIDGE RESONANT CONVERTER (HBC) IN A MULTI-CHIP IC. IT PROVIDES THE DRIVE FUNCTION FOR THE DISCRETE MOSFET IN AN UP-CONVERTER AND FOR THE TWO DISCRETE POWER MOSFETS IN A RESONANT HALF-BRIDGE CONFIGURATION.

THE EFFICIENT OPERATION OF THE PFC IS ACHIEVED BY IMPLEMENTING FUNCTIONS SUCH AS QUASI-RESONANT OPERATION AT HIGH POWER LEVELS AND QUASI-RESONANT OPERATION WITH VALLEY SKIPPING AT LOWER POWER LEVELS. OVERCURRENT PROTECTION (OCP), OVERVOLTAGE PROTECTION (OVP), AND DEMAGNETIZATION SENSING ENSURE SAFE OPERATION UNDER ALL CONDITIONS. THE HBC MODULE IS A IS A HIGH-VOLTAGE CONTROLLER FOR A ZERO-VOLTAGE SWITCHING LLC RESONANT CONVERTER. IT CONTAINS A HIGH-VOLTAGE LEVEL SHIFT CIRCUIT AND SEVERAL PROTECTION CIRCUITS INCLUDING OCP, OPEN-LOOP PROTECTION, CAPACITIVE MODE PROTECTION AND A GENERAL PURPOSE LATCHED PROTECTION INPUT.

THE HIGH-VOLTAGE CHIP IS FABRICATED USING A PROPRIETARY HIGH-VOLTAGE BIPOLAR-CMOS-DMOS POWER LOGIC PROCESS THAT ENABLES EFFICIENT DIRECT START-UP FROM THE RECTIFIED UNIVERSAL MAINS VOLTAGE. THE LOW-VOLTAGE SILICON ON INSULATOR (SOI) CHIP IS USED FOR ACCURATE, HIGH-SPEED PROTECTION FUNCTIONS AND CONTROL.

THE TOPOLOGY OF A PFC CIRCUIT AND A RESONANT CONVERTER CONTROLLED BY THE TEA1713 IS VERY FLEXIBLE, ENABLING IT TO BE USED IN A BROAD RANGE OF APPLICATIONS WITH A WIDE MAINS VOLTAGE RANGE. COMBINING PFC AND HBC CONTROLLERS IN A SINGLE IC MAKES THE TEA1713 IDEAL FOR CONTROLLING POWER SUPPLIES IN LCD AND PLASMA TELEVISIONS.

HIGHLY EFFICIENT AND RELIABLE POWER SUPPLIES PROVIDING OVER 100 W CAN BE DESIGNED EASILY USING THE TEA1713, WITH A MINIMUM OF EXTERNAL COMPONENTS.

TEA1713主要特性：

1． GENERAL FEATURES