TPS40210異步升壓電源控制方案

TI公司的TPS40210和TPS40211是寬輸入電壓（4.5V-52V）電流模式異步升壓控制器，具有可編程軟起動特性，帶自動重起的過流保護和可編程的振蕩頻率，廣泛應(yīng)用于LED照明，工業(yè)控制系統(tǒng)以及以電池為能源的系統(tǒng)。本文介紹了TPS40210和TPS40211的主要特性，功能方框圖以及幾種設(shè)計案例和相應(yīng)的所用材料清單（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

                  應(yīng)用：
                  LED Lighting
                  Industrial Control Systems
                  Battery Powered Systems

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                  圖1. TPS40210/1 功能方框圖

                  圖2.12V到24V異步升壓穩(wěn)壓器
                  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.

                  圖3.TPS40210 設(shè)計案例： 8V 到 24V，電流 2A
                  圖3所用材料清單（BOM）：

                  圖4.12V輸入， 700mA LED 驅(qū)動器，高達35V LED串
                  圖4所用材料清單（BOM）：