| TI TPS40210异步升压电源控制方案 |
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| 作者:TI 来源:中电网 点击数:141 更新时间:2008-4-29 |
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TI公司的TPS40210和TPS40211是宽输入电压(4.5V-52V)电流模式异步升压控制器,具有可编程软起动特性,带自动重起的过流保护和可编程的振荡频率,广泛应用于LED照明,工业控制系统以及以电池为能源的系统。本文介绍了TPS40210和TPS40211的主要特性,功能方框图以及几种设计案例和相应的所用材料清单(BOM)。
TPS40210, TPS40211 4.5-V TO 52-V INPUT CURRENT MODE BOOST ONTROLLER
The TPS40210 and TPS40211 are wide-input voltage (4.5 V to 52 V), non-synchronous boost controllers. They are suitable for topologies which require a grounded source N-channel FET including boost, flyback, SEPIC and various LED Driver applications. The device features include programmable soft start, overcurrent protection with automatic retry and programmable oscillator frequency. Current mode control provides improved transient response and simplified loop compensation. The main difference between the two parts is the reference voltage to which the error amplifier regulates the FB pin.
主要特性: Suitable for Boost, Flyback, SEPIC, and LED Driver Topologies Wide Input Operating Voltage: 4.5 V to 52 V Adjustable Oscillator Frequency Fixed Frequency Current Mode Control Internal Slope Compensation Integrated Low-Side Driver Programmable Closed Loop Soft Start Overcurrent Protection 700-mV Reference (TPS40210) 263-mV Reference (TPS40211) Low Current Disable Function
应用: LED Lighting Industrial Control Systems Battery Powered Systems


图1. TPS40210/1 功能方框图
图2.12V到24V异步升压稳压器 12-V to 24-V Non-Synchronous Boost Regulator The following example illustrates the design process and component selection for a 12-V to 24-V non-synchronous boost regulator using the TPS40210 controller.

图3.TPS40210 设计案例: 8V 到 24V,电流 2A 图3所用材料清单(BOM):


图4.12V输入, 700mA LED 驱动器,高达35V LED串 图4所用材料清单(BOM):
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