NXP TEA1713 150W 一体化PC适配器解决方案

发布时间：2011-10-13 14:50 发布者：1046235000

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

􀂄 Integrated PFC and HBC controllers

􀂄 Universal mains supply operation (70 V to 276 V (AC))

􀂄 High level of integration resulting in a low external component count and a cost effective design

􀂄 Enable input (enable only PFC or both PFC and HBC controllers)

􀂄 On-chip high-voltage start-up source

􀂄 Stand-alone operation or IC supplied from external DC source

2．PFC controller features

􀂄 Boundary mode operation with on-time control

􀂄 Valley/zero voltage switching for minimum switching losses

􀂄 Frequency limiting to reduce switching losses

􀂄 Accurate boost voltage regulation

􀂄 Burst mode switching with soft start and soft stop

3．HBC controller features

􀂄 Integrated high-voltage level shifter

􀂄 Adjustable minimum and maximum frequency

􀂄 Maximum 500 kHz half-bridge switching frequency

􀂄 Adaptive non-overlap time

􀂄 Burst mode switching

4． Protection features

􀂄 Safe restart mode for system fault conditions

􀂄 General latched protection input for output overvoltage protection or external temperature protection

􀂄 Protection timer for time-out and restart

􀂄 Overtemperature protection

􀂄 Soft (re)start for both controllers

􀂄 Undervoltage protection for mains (brownout), boost, IC supply and output voltage

􀂄 Overcurrent regulation and protection for both controllers

􀂄 Accurate overvoltage protection for boost voltage

􀂄 Capacitive mode protection for HBC controller

TEA1713应用：

􀂄 LCD television

􀂄 Plasma television

􀂄 Adapters

图1。TEA1713方框图

图2。TEA1713内部电源框图

图3。TEA1713应用框图

图4。TEA1713 250W LCD TV电源电路图（1）

图5。TEA1713 250W LCD TV电源电路图（2）

图6。TEA1713 250W LCD TV电源电路图（3）

图7。TEA1713 70W 笔记本电脑适配器电源电路图（1）

图8。TEA1713 70W 笔记本电脑适配器电源电路图（2）

采用TEA1713和TEA1795 150W一体化PC适配器

The purpose of the demo board is to demonstrate the operation of the TEA1713T and TEA1795T in a single output supply including burst mode operation. The performance is according today’s general standards and can be used as a starting point for further development.