TPS54531 - 具有 ECO-MODE 的 5A、28V 输入、降压 SWIFT? DC/DC 转换器

TPS54531是TI德州仪器公司的一款转换器（集成开关）产品，TPS54531是具有 ECO-MODE 的 5A、28V 输入、降压 SWIFT? DC/DC 转换器，本站介绍了TPS54531的封装应用图解、特点和优点、功能等，并给出了与TPS54531相关的TI元器件型号供参考。

TPS54531 - 具有 ECO-MODE 的 5A、28V 输入、降压 SWIFT? DC/DC 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

3.5 to 28-V Input Voltage Range
Adjustable Output Voltage Down to 0.8 V
Integrated 80-mΩ High-Side MOSFET Supports up to 5-A Continuous Output Current
High Efficiency at Light Loads with a Pulse Skipping Eco-mode™
Fixed 570kHz Switching Frequency
Typical 1μA Shutdown Quiescent Current
Adjustable Slow Start Limits Inrush Currents
Programmable UVLO Threshold
Overvoltage Transient Protection
Cycle-by-Cycle Current-Limit, Frequency Fold Back, and Thermal Shutdown Protection
Available in Easy-to-Use Thermally Enhanced 8-Pin SO PowerPADTM Package

产品应用

Consumer Applications such as Set-Top Boxes, CPE Equipment, LCD Displays, Peripherals, and Battery Chargers
Industrial and Car Audio Power Supplies
5-V, 12-V and 24-V Distributed Power Systems

产品说明

The TPS54531 device is a 28-V, 5-A non-synchronous buck converter that integrates a low RDS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode feature is automatically activated. Furthermore, the 1-μA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input under-voltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current-limit scheme, frequency fold back, and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54531 device is available in 8-pin SO PowerPADTM package that has been internally optimized to improve thermal performance.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS54531	SO PowerPAD (8)	4.90 mm × 3.90 mm

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