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    首页产品索引TPS43000

    TPS43000

    购买收藏
    多拓扑(降压、升压、sepic)高频 DC/DC 控制器

    制造商:TI

    产品信息

    描述The TPS43000 is a high-frequency, voltage-mode, synchronous PWM controller that can be used in buck, boost, SEPIC, or flyback topologies. This highly flexible, full-featured controller is designed to drive a pair of external MOSFETs (one N-channel and one P-channel), enabling it for use with a wide range of output voltages and power levels. With an automatic PFM mode, a shutdown current of less than 1 uA, a sleep-mode current of less than 100 uA and a full operating current of less than 2 mA at 1 MHz, it is ideal for building highly efficient, dc-to-dc converters. The TPS43000 operates over a wide input voltage range of 1.8 V to 9.0 V. Typical power sources are distributed power systems, two to four nickel or alkaline batteries, or one to two lithium-ion cells. It can be used to generate regulated output voltages from as low as 0.8 V to 8 V or higher. It operates either in a fixed-frequency mode, where the user programs the frequency (up to 2 MHz), or in an automatic PFM mode. In the automatic mode, the controller goes to sleep when the inductor current goes discontinuous, and wakes up when the output voltage has fallen by 2%. In this hysteretic mode of operation, very high efficiency can be maintained over a very wide range of load current. The device can also be synchronized to an external clock source using the dual function SYNC/SD input pin. The TPS43000 features a selectable two-level current-limit circuit which senses the voltage drop across the energizing MOSFET. The user can select either pulse-by-pulse current limiting or hiccup mode overcurrent protection. The TPS43000 also features a low-power (LP) mode (which reduces gate charge losses in the N-channel MOSFET at high input/output voltages), undervoltage lockout, and soft-start. The TPS43000 is available in a 16-pin TSSOP (PW) package.特性 High-Frequency (2-MHz) Voltage Mode PWM Controller 1.8-V to 9.0-V Input Voltage Range 0.8-V to 8.0-V Output Voltage Range (Higher in Non-Synchronous Boost Topology) High-Efficiency Buck, Boost, SEPIC or Flyback (Buck-Boost) Topology Synchronous Rectification for High-Efficiency Drives External MOSFETs for High-Current Applications Synchronizable Fixed-Frequency PWM or Automatic Pulsed Frequency Modulation (PFM) Mode Built-In Soft-Start User Programmable Discontinuous or Continuous Conduction Mode Selectable Pulse-by-Pulse Current Limiting or Hiccup Mode Protection APPLICATIONS Networking Equipment Servers Base Stations Cellular Telephones Satellite Telephones GPS Devices Digital Still and Handheld Cameras Personal Digital Assistants (PDAs)

    电路图、引脚图和封装图

    在线购买

    型号制造商描述购买
    TPS43000PWG4TIIC REG CTRLR MULT TOP 16TSSOP 立即购买
    TPS43000PWRG4TIIC REG CTRLR MULT TOP 16TSSOP 立即购买
    TPS43000PWTIIC REG CTRLR MULT TOP 16TSSOP 立即购买
    TPS43000PWRTIIC REG CTRLR MULT TOP 16TSSOP 立即购买

    技术资料

    标题类型大小(KB)下载
    Basic Calculation of a Boost Converter's Power StagePDF186 点击下载
    1-MHz, 3.3-V High-Efficiency Synchronous Buck ConverterPDF162 点击下载
    2.5-V to 5.0-V, 600-kHz High-Efficiency Synchronous Boost Converter With TPS4300PDF156 点击下载
    3.3-V to 12-V High Efficiency Ceramic Only Non-Synchronous Boost ConverterPDF144 点击下载
    Low-Voltage (1.2-V) High-Efficiency Synchronous Buck Converter With TPS43000 PWMPDF166 点击下载

    应用案例更多案例

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