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Texas Instruments TPS56837H 8A Synchronous Buck Converter

Texas Instruments TPS56837H 8A Synchronous Buck Converter is an easy-to-use, high-efficiency, synchronous buck converter with a wide input voltage range of 4.5V to 28V. The device supports up to 8A continuous output current at output voltages between 4V and 22V and supports 5V, 9V, 15V, and 20V dynamic output change for USB Power Delivery (USB PD) applications. The TPS56837H uses D-CAP3 control mode to provide a fast transient response, good line and load regulation, and no requirement for external compensation. It supports low equivalent series resistance (ESR) output capacitors like MLCC.

The TPS56837H operates at Eco-mode to attain high efficiency at light load with a fixed 500kHz switching frequency and three selectable current limits through MODE pin configuration. The TPS56837H has an adjustable soft-start time by the SS pin capacitor configuration. The TPS56837H 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 Texas Instruments TPS56837H 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.

Features

Support for USB power delivery (USB PD)
- 4.5V to 28V input voltage range
- 4V to 22V output voltage range
- Supports 8A continuous output current
- Three adjustable cycle-by-cycle over the current limit for low-side MOSFET by mode selection
High efficiency over the entire load range
- Integrated 20.4mΩ and 9.5mΩ MOSFETs
- 45uA low quiescent current
- Fixed 500kHz switching frequency
- 98.7% efficiency at V_IN = 24V, V_OUT = 20V and I_OUT = 3A
- Eco-mode for high light-load efficiency

0.6V ±1% reference voltage at 25°C
D-CAP3™ control mode for fast transient response
Adjustable soft-start time by SS capacitor
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

Applications

USB Power Supplies with PD
Industrial PC, EPOS, factory automation and control
Multifunction printers, video conference system

Monitors, TVs, speakers, PCs and notebooks, portable electronics
General purposes for 12V, 19V, 24V power-bus supply

Texas Instruments TPS56837H 8A Synchronous Buck Converter

Features

Applications

Functional Block Diagram

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