TPS53321 - 具有集成 MOSFET 的 2.9V 至 6V、5A 降压转换器

TPS53321是TI德州仪器公司的一款转换器（集成开关）产品，TPS53321是具有集成 MOSFET 的 2.9V 至 6V、5A 降压转换器，本站介绍了TPS53321的封装应用图解、特点和优点、功能等，并给出了与TPS53321相关的TI元器件型号供参考。

TPS53321 - 具有集成 MOSFET 的 2.9V 至 6V、5A 降压转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The TPS53321 provides a fully integrated 3-V to 5-V VIN integrated synchronous FET converter solution with 16 total components, in 200 mm2 of PCB area. Due to the low on-resistance and TI's Proprietary SmoothPWM™ Skip mode of operation, it enables 96% peak efficiency, and over 90% efficiency at loads as light as 100 mA. It requires only two 22-µF ceramic output capacitors for a power dense 5-A solution.

The TPS53321 features a 1.1-MHz switching frequency, skip mode operation support, pre-bias startup, internal softstart, output soft discharge, internal VBST switch, power good, EN/input UVLO, overcurrent, overvoltage, undervoltage and over-temperature protections and all ceramic output capacitor support. It supports supply voltage from 2.9V to 3.5V and conversion voltage from 2.9V to 6.0V, and output voltage is adjustable from 0.6V to 0.84V × VIN.

The TPS53321 is available in the 3 mm × 3 mm 16-pin QFN package (Green RoHs compliant and Pb free) and operates between –40°C and 85°C.

产品特性

96% Maximum Efficiency

Continuous 5-A Output Current

Supports All MLCC Output Capacitor

SmoothPWM™ Auto-Skip Eco-mode™ for Light-Load Efficiency

Optimized Efficiency at Light and Heavy Loads

Voltage Mode Control

Supports Master-Slave Interleaved Operation

Synchronization up to ±20% of Nominal Frequency

Conversion Voltage Range Between 2.9 V and 6.0 V

Soft-Stop Output Discharge During Disable

Adjustable Output Voltage Ranging Between 0.6 V and 0.84 V × VIN

Overcurrent, Overvoltage and Over-Temperature Protection

Small 3 × 3 , 16-Pin QFN Package

Open-Drain Power Good Indication

Internal Boot Strap Switch

Low RDS(on), 24-mΩ with 3.3-V Input and 19-mΩ with 5-V Input

Supports Pre-bias Start-Up

APPLICATIONS

5-V Step-down Rail
3.3-V Step-down Rail

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