TPS54320 - 4.5V 至 17V 输入、3A 同步降压 SWIFT? 转换器

TPS54320是TI德州仪器公司的一款转换器（集成开关）产品，TPS54320是4.5V 至 17V 输入、3A 同步降压 SWIFT? 转换器，本站介绍了TPS54320的封装应用图解、特点和优点、功能等，并给出了与TPS54320相关的TI元器件型号供参考。

TPS54320 - 4.5V 至 17V 输入、3A 同步降压 SWIFT? 转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品特性

Integrated 57-mΩ / 50-mΩ MOSFETs
Split Power Rail: 1.6 to 17 V on PVIN
200-kHz to 1.2-MHz Switching Frequency
Synchronizes to External Clock
0.8-V Voltage Reference With ±1% Accuracy
Low 2-µA Shutdown Quiescent Current
Hiccup Overcurrent Protection
Monotonic Start-Up into Prebiased Outputs
–40°C to 150°C Operating Junction Temperature Range
Pin-to-Pin Compatible With the TPS54620
Adjustable Slow Start/Power Sequencing
Power Good Output for Undervoltage and Overvoltage Monitoring
Adjustable Input Undervoltage Lockout (UVLO)
Supported by SwitcherPro™ Software Tool
For SWIFT™ Documentation and SwitcherPro, Visit www.ti.com/swift

产品应用

Broadband, Networking, and Communication Infrastructure
Automated Test and Medical Equipment
DSP and FPGA Point-of-Load Applications from 12-V Bus

产品说明

The TPS54320 is a full featured 17-V, 3-A synchronous step-down converter which is optimized for small designs through high efficiency and integrated high-side and low-side MOSFETs. Further space savings are achieved through current mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor's footprint.

The output voltage startup ramp is controlled by the SS/TR pin which allows operation as either a stand alone power supply or in tracking situations. Power sequencing is also possible by correctly configuring the enable and the open drain power good pins.

Cycle by cycle current limiting on the high-side FET protects the device in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. Hiccup protection will be triggered if the overcurrent condition has persisted for longer than the preset time. Thermal shutdown disables the part when die temperature exceeds thermal shutdown temperature. The TPS54320 is available in a 14-pin, 3.5-mm × 3.5-mm VQFN, thermally-enhanced package.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS54320	VQFN (14)	3.50 mm × 3.50 mm

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