TPS40305 - 高功率密度、高效的 1.2MHz 3V 至 20V 宽输入同步降压控制器

TPS40305是TI德州仪器公司的一款控制器（外部开关）产品，TPS40305是高功率密度、高效的 1.2MHz 3V 至 20V 宽输入同步降压控制器，本站介绍了TPS40305的封装应用图解、特点和优点、功能等，并给出了与TPS40305相关的TI元器件型号供参考。

TPS40305 - 高功率密度、高效的 1.2MHz 3V 至 20V 宽输入同步降压控制器 - 控制器（外部开关） - DC/DC开关稳压器 - 德州仪器

产品特性

Input Voltage Range From 3 V to 20 V
300-kHz (TPS40303), 600-kHz (TPS40304), and 1.2-MHz (TPS40305) Switching Frequencies
High- and Low-Side FET RDS(on) Current Sensing
Programmable Thermally Compensated OCP Levels
Programmable Soft-Start
600-mV, 1% Reference Voltage
Voltage Feed-Forward Compensation
Supports Prebiased Output
Frequency Spread Spectrum
Thermal Shutdown Protection at 145°C
10-Pin 3-mm × 3-mm SON Package With Ground Connection to Thermal Pad

产品应用

POL Modules
Printers
Digital TVs
Telecom

产品说明

The TPS4030x is a family of cost-optimized synchronous buck controllers that operate 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 a change in input voltage. The switching frequency is fixed at 300 kHz, 600 kHz, or 1.2 MHz.

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

The TPS4030x offers design with a variety of user-programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation.

OCP level may be programmed by a single external resistor connected from the LDRV pin to circuit ground. During initial power on, the TPS4030x 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 TPS4030x then enters a shutdown and restart cycle until the fault is removed.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS40303	VSON (10)	3.00 mm × 3.00 mm
TPS40304
TPS40305

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