Texas Instruments TPS54A24

Beschreibung

The TPS54A24 is a full-featured 17-V, 10-A synchronous step-down DC/DC converter in a standard 4 mm × 4 mm WQFN package.The device is optimized for small solution size through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through peak-current-mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor footprint.The peak-current-mode control simplifies the loop compensation and provides fast transient response. Cycle-by-cycle peak current limiting on the high-side and low-side sourcing current limit protects the device in overload situations. Hiccup limits MOSFET power dissipation if a short circuit or over loading fault persists.A power-good supervisor circuit monitors the regulator output. The PGOOD pin is an open-drain output and goes high impedance when the output voltage is in regulation. An internal deglitch time prevents the PGOOD pin from pulling low unless a fault has occurred.A dedicated EN pin can be used to control the regulator on/off and adjust the input undervoltage lockout. The output voltage start-up ramp is controlled by the SS/TRK pin, which allows operation as either a standalone power supply or in tracking situations.

Eigenschaften

• Standard 4-mm × 4-mm WQFN package
• –40°C to +150°C Operating junction temperature
• 200-kHz to 1.6-MHz Fixed switching frequency
• Peak-current-mode control
• Synchronizes to external clock
• 0.6-V Voltage reference ±0.85% over temperature
• 0.6-V to 12-V Output voltage range
• Safe start-up into prebiased output voltage
• Hiccup current limit
• Adjustable soft start and power sequencing
• Adjustable input undervoltage lockout
• Power-good output monitor for undervoltage and overvoltage
• 3-µA Shutdown current
• Output overvoltage protection
• Non-latch thermal shutdown protection
• Create a custom design using the TPS54A24 with the WEBENCH® Power Designer

Typische Anwendungen

• Test and measurement
• Wired networking (switches), Wireless infrastructure
• Medical imaging equipment
• Power for FPGAs, SoCs, DSPs and processors

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers