Texas Instruments TPS563249 | Demoboard TPS563249EVM-031

Description

The TPS563249 is a single, adaptive on-time, D-CAP3™ mode, synchronous buck converter requiring avery low external component count. The D-CAP3 control circuit is optimized for low-ESR output capacitorssuch as POSCAP, SP-CAP, or ceramic types and features fast transient response with no externalcompensation. The switching frequency is internally set at a nominal 1.4 MHz. The high-side and low-sideswitching MOSFETs are incorporated inside the TPS563249 package along with the gate-drive circuitry.The low drain-to-source on resistance of the MOSFETs allows the TPS563249 to achieve high efficienciesand helps keep the junction temperature low at high output currents. The TPS563249 dc/dc synchronousconverter is designed to provide up to a 3-A output from an input voltage source of 4.5 V to 17 V.

Features

• 3-A Converter Integrated 70-mΩ and 30-mΩ FETs
• D-CAP3™ Mode Control with Fast Transient Response
• Input Voltage Range: 4.5 V to 17 V
• Output Voltage Range: 0.6 V to 7 V
• Forced Continuous Conduction Mode
• Constant 1.4-MHz Switching Frequency
• Low Shutdown Current Less than 10 μA
• 1% Feedback Voltage Accuracy (25ºC)
• Startup from Pre-Biased Output Voltage
• Cycle-by-Cycle Overcurrent Limit
• Hiccup-mode Overcurrent Protection
• Non-Latch UVP and TSD Protections
• Fixed Soft Start: 1.8 ms

Typical applications

• Digital TV, Set-Top Boxes
• Broadband Modem / Access Point Networks / Wireless Routers / Surveillance

More information

• Datasheet
• IC product information