TPS40304A

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具有 FSS 和寬工作溫度范圍的 3V 至 20V、25A、600kHz 同步降壓控制器

產(chǎn)品詳情

Rating Catalog Topology Buck Iout (max) (A) 25 Vin (max) (V) 20 Vin (min) (V) 3 Vout (max) (V) 18 Vout (min) (V) 0.6 Control mode Voltage mode Features Enable, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification Operating temperature range (°C) -40 to 145 Iq (typ) (μA) 2500 Duty cycle (max) (%) 90 Number of phases 1 EMI features Spread Spectrum
Rating Catalog Topology Buck Iout (max) (A) 25 Vin (max) (V) 20 Vin (min) (V) 3 Vout (max) (V) 18 Vout (min) (V) 0.6 Control mode Voltage mode Features Enable, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification Operating temperature range (°C) -40 to 145 Iq (typ) (μA) 2500 Duty cycle (max) (%) 90 Number of phases 1 EMI features Spread Spectrum
VSON (DRC) 10 9 mm2 3 x 3
  • 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
  • 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

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.

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.
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類型 標題 下載最新的英語版本 日期
* 數(shù)據(jù)表 3-V TO 20-V INPUT SYNCHRONOUS BUCK CONTROLLER. 數(shù)據(jù)表 2010年 1月 27日

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評估板

TPS40304EVM-353 — 具有 NexFET™ 功率 MOSFET 的 8-14V 輸入電壓、1.2V 輸出電壓同步降壓控制器評估模塊

TPS40304EVM-353 評估模塊是一款同步降壓控制器，可通過標稱 12V 輸入總線，在高達 20A 的電流下提供 1.2V 輸出。根據(jù)設計，EVM 采用單電源啟動，而無需附加的偏置電壓。該模塊使用我們的 NexFET™ 高性能 MOSFET，從而提高功率密度和效率。

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