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TPS40304A-高功率密度、600kHz 3V 至 20V 宽输入同步降压控制器，591mV、1% 参考
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TI产品 - TPS40304A介绍

TPS40304A - 高功率密度、600kHz 3V 至 20V 宽输入同步降压控制器，591mV、1% 参考

TPS40304A是TI德州仪器公司的一款控制器（外部开关）产品，TPS40304A是高功率密度、600kHz 3V 至 20V 宽输入同步降压控制器，591mV、1% 参考，本站介绍了TPS40304A的封装应用图解、特点和优点、功能等，并给出了与TPS40304A相关的TI元器件型号供参考。

TPS40304A - 高功率密度、600kHz 3V 至 20V 宽输入同步降压控制器，591mV、1% 参考 - 控制器（外部开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The TPS40304A is a cost-optimized synchronous buck controller that operates from 3-V to 20-V input. The controller implements a voltage-mode control architecture with input-voltage feed-forward compensation that responds instantly to input voltage change. The switching frequency is fixed at 600 kHz.

Frequency Spread Spectrum feature adds dither to the switching frequency, significantly reducing the peak EMI noise and making it much easier to comply with EMI standards.

The TPS40304A offers design with a variety of user programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation.

The OCP level is programmed by a single external resistor connected from LDRV pin to circuit ground. During initial power on, the TPS40304A enters a calibration cycle, measures the voltage at the LDRV pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is compared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. The TPS40304A then enters a shutdown and restart cycle until the fault is removed.

产品特性

  • Input Voltage Range from 3 V to 20 V
  • Fixed 600-kHz Switching Frequency
  • High- and Low-Side FET RDS(on) Current Sensing
  • Programmable Thermally Compensated OCP Levels
  • Programmable Soft-Start
  • 591-mV, 1% Reference Voltage
  • Voltage Feed-Forward Compensation
  • Supports Pre-Biased Output
  • Frequency Spread Spectrum
  • Thermal Shutdown Protection at 145°C
  • 10-Pin 3 mm × 3 mm SON Package with Ground Connection to Thermal Pad
  • APPLICATIONS
    • POL Modules
    • Printer
    • Digital TV
    • Telecom

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