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(dòng)特性，帶自動(dòng)重起的過流保護(hù)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(jì)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

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(jì)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(dòng)器，高達(dá)35V LED串
圖4所用材料清單（BOM）：