Texas Instruments

TPS54313PWP  

DC Switching Voltage Regulators

TPS54313PWP Description

The TPS54313PWP from Texas Instruments is a high-efficiency, 3A synchronous buck (step-down) DC-DC converter housed in a 20-pin HTSSOP package. Designed for fixed 1.5V output applications, it operates over a wide input voltage range of 3V to 6V, making it suitable for low-voltage power systems. Part of the SWIFT™ series, this regulator integrates a synchronous rectifier for improved efficiency, reducing the need for external Schottky diodes. With a switching frequency of 350kHz or 550kHz, it offers flexibility in balancing efficiency and component size. Although marked as obsolete, its robust design and compliance with ROHS3 and REACH standards ensure reliability for legacy designs.

TPS54313PWP Features

• High Efficiency: Synchronous rectification minimizes power losses, achieving peak efficiency for 3A loads.
• Wide Input Range: Supports 3V–6V inputs, ideal for battery-powered or regulated intermediate bus applications.
• Fixed 1.5V Output: Precision voltage regulation (±2% typical) simplifies design for low-voltage logic (e.g., DSPs, FPGAs).
• Dual Switching Frequencies: Selectable 350kHz/550kHz operation optimizes for efficiency or compact layouts.
• Integrated Protection: Includes thermal shutdown, undervoltage lockout (UVLO), and overcurrent protection.
• Compact Footprint: HTSSOP-20 package (PWP) enables space-constrained designs.

TPS54313PWP Applications

The TPS54313PWP excels in systems requiring stable, high-current 1.5V rails, such as:

• Portable Electronics: Tablets, handheld devices powered by Li-ion batteries (3.7V nominal).
• Embedded Systems: Point-of-load (POL) regulation for microcontrollers, ASICs, or memory modules.
• Industrial Controls: Low-voltage sensors or actuators in 5V bus architectures.
• Legacy Upgrades: Replacing linear regulators to reduce heat dissipation in tight layouts.

Conclusion of TPS54313PWP

While obsolete, the TPS54313PWP remains a compelling choice for designers needing a compact, efficient buck converter with 3A output capability. Its synchronous topology, dual-frequency operation, and robust protection features make it ideal for space- and energy-sensitive applications. Engineers should evaluate alternative SWIFT™ series models (e.g., TPS54320) for active designs but may leverage this IC for cost-effective legacy system maintenance.

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TPS54313PWP Documents

Download datasheets and manufacturer documentation for TPS54313PWP

EOL :

Product Discontinuance Notification (PDF)      

Images :

Mechanical Outline Drawing      

PCN :

Product Change Notification (PDF)      

Application Notes :

Adjusting Vout of Internal Compensated Low Input Voltage SWIFT DC/DC Converters (Rev. A)       Designing with the TPS54311 Through TPS54316 Synchronous Buck Regulators      

Technical Resources :

TPS54313xx TINA-TI Transient Reference Design      

SPICE Models :

TPS54313xx TINA-TI Transient Spice Model       TPS54313 Unencrypted PSpice Transient Model Package (Rev. A)