TPS56A37中文资料德州仪器数据手册PDF规格书

1 Features

• 4.5V to 28V input voltage range

• 0.6V to 13V output voltage range

• Supports 10A continuous output current

• Integrated 19.4mΩ and 8.5mΩ MOSFETs

• 0.6V ±1 reference voltage at 25°C

• 45uA low quiescent current

• D-CAP3™ control mode for fast transient response

• Eco-mode (auto-skip mode) for high light-load

efficiency

• Fixed 500kHz switching frequency

• Cycle by cycle over current limit

• Adjustable soft-start time with default 1.8ms

• Built-in output discharge function

• Power-good indicator to monitor output voltage

• Supports up to 98 duty operation

• Non-latched protections for UV, OV, OT, and UVLO

• –40°C to +150°C operating junction temperature

• Small 10-pin 3.0mm × 3.0mm HotRod™ QFN

package

• Pin-to-pin compatible with 6A TPS56637 and 8A

TPS56837

2 Applications

• Industrial PC, EPOS, factory automation and

control

• Multifunction printers, video conference system

• Monitors, TV, speakers, PC and notebooks,

portable electronics

• General purposes for 12V,19V, 24V power-bus

supply

3 Description

The TPS56A37 is a high-efficiency, easy-to-use,

synchronous buck converter with a wide input voltage

range of 4.5V to 28V. The device supports up to 10A

continuous output current at output voltages between

0.6V and 13V.

The TPS56A37 uses D-CAP3 control mode to

provide fast transient response, good line and load

regulation, no requirement for external compensation,

and supports low equivalent series resistance (ESR)

output capacitors like MLCC.

The TPS56A37 operates at Eco-mode to attain high

efficiency at light load with fixed 500kHz switching

frequency. The TPS56A37 has adjustable soft-start

time by connecting the SS capacitor and with default

1.8ms with the SS pin floating.

The TPS56A37 provides complete non-latched OV

(overvoltage), UV (undervoltage), OC (overcurrent),

OT (overtemperature), and UVLO (undervoltage

lockout) protections combined with power-good

indicator and output discharge function features.

The TPS56A37 is available in a 10-pin, 3.0mm

× 3.0mm HotRod QFN package, and the junction

temperature is specified from –40°C to 150°C.