TPS54073PWP_1133985

· 8-mW MOSFET Switches for High Efficiency at 14.5-A Peak Output Current
· Separate Low-Voltage Power Bus
· Disabled Current Sinking During Start-Up
· Adjustable Output Voltage Down to 0.9 V
· Wide PWM Frequency: Fixed 350 kHz, 550 kHz or Adjustable 280 kHz to 700 kHz
· Synchronizable to 700 kHz
· Load Protected by Peak Current Limit and Thermal Shutdown
· Integrated Solution Reduces Board Area and Total Cost

(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

As a member of the SWIFT™family of dc/dc regu- lators, the TPS54073 low-input voltage high-output current synchronous buck PWM converter integrates all required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier that enables maximum performance and flexibility in choosing the output filter L and C components; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 3 V; an internally or externally set slow-start circuit to limit in-rush currents; and a power good output useful for processor/logic reset, fault signaling, and supply se-quencing.

For reliable power up in output precharge applications,the TPS54073 is designed to only source current during start-up.

The TPS54073 is available in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD™ package, which eliminates bulky heatsinks. TI provides evaluation modules and the SWIFT™ designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment devel-opment cycles