Texas Instruments TPS56837 | Demoboard SLVUCE1A

Description

The TPS56837 is an adaptive on-time D-CAP3™ control mode synchronous step-down DC/DC converter. With the wide operating input voltage range of 4.5 V to 28 V, the TPS56837 is designed for systems powered from 12-V, 19-V, 24-V power-bus rails. The device supports up to 8-A continuous output current between 0.6 V and 13 V. The TPS56837 device provides 500-kHz, 800-kHz and 1.2-MHz switching frequencies for selection. This switch mode power supply (SMPS) IC is optimized for applications requiring very low power consumption, such as printers, DTV, monitor and some industrial applications, by providing an Eco-mode™ (pulse-skipping). D-CAP3 control mode provides an easy-to-design, stable regulation with very little external components, and supports cost-effective ceramic capacitors. Table 1-1 shows the rated input voltage and output current ranges for the evaluation module.The TPS56837EVM evaluation module (EVM) is a single, synchronous buck converter providing 5-V at 8-A output from 5.5-V to 28-V input. This user’s guide describes the TPS56837EVM performance.

Features

• 4.5V to 28V input voltage range
• 0.6V to 13V output voltage range
• Supports 8A continuous output current
• Integrated 20.4mΩ and 9.5mΩ MOSFETs
• 0.6V ±1% reference voltage at 25°C
• 45uA low quiescent current of TPS56837
• D-CAP3™ control mode for fast transient response
• TPS56837 with Eco-mode (auto-skip mode) for high light-load efficiency
• TPS56838 with forced continuous conduction mode (FCCM)
• TPS56836 with Out-of-Audio™ (OOA) mode
• 500kHz, 800kHz, and 1200kHz selectable switching frequencies by mode selection
• Adjustable cycle-by-cycle over current limit for low side MOSFETs by mode selection
• 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
• Create a customer design using the TPS5683x with the WEBENCH® Power Designer
• Pin-to-pin compatible with 6A TPS56637 and 8A TPS56837H

Typical applications

• Multifunction printers, video conference system, Monitors, TV, speakers, PC and notebooks, portable electronics
• Industrial PC, EPOS, factory automation and control
• General purposes for 12V,19V, 24V power-bus supply

More information

• Datasheet
• IC product information