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TPS53318DQ

8A sync buck, 1.5-22V in, D-CAP mode, QFN-22

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Manufacturer Part：

TPS53318DQ

Package：

QFN-22 (5.0 x 6.0 x 0.9 mm, exposed pad)

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Description

Product Overview

The TPS53318DQ from Texas Instruments is a high-efficiency 8A synchronous buck converter with D-CAP mode control, supporting input voltages from 1.5V to 22V for point-of-load applications.

Key Specifications

Manufacturer Texas Instruments
Topology Synchronous Buck
Input Voltage 1.5V to 22V (VDD 4.5-25V)
Output Voltage 0.6V to 5.5V
Output Current 8A
Switching Frequency 8 preset values (250kHz-970kHz)
Control Mode D-CAP with adaptive on-time
Efficiency >90% typical
Features Auto-skip / FCCM mode
Package QFN-22 (5x6mm)
Operating Temperature -40°C to +125°C

Features

  • 8A continuous output current
  • D-CAP mode control (no external compensation)
  • 8 preset switching frequencies
  • Auto-skip light-load mode
  • Forced continuous conduction mode (FCCM)
  • Internal soft-start
  • Power-good output
  • Over-current/over-voltage/thermal protection

Applications

  • Server and telecom POL
  • FPGA and ASIC core power
  • DDR memory power
  • Embedded computing

The TPS53318DQ from Texas Instruments is a high-efficiency 8A synchronous buck converter using D-CAP mode control with adaptive on-time. It supports wide input (1.5V-22V) to low output (0.6V-5.5V) conversion, making it ideal for point-of-load regulation in servers and telecom. Eight preset switching frequencies (250kHz-970kHz) are selected via RF pin resistor. No external phase compensation is needed. Auto-skip mode improves light-load efficiency while FCCM mode provides constant frequency.

D-CAP mode uses adaptive on-time control with output voltage directly compared to the reference via a comparator. No error amplifier means no external compensation. The on-time is adaptively adjusted based on VIN and VOUT to maintain near-constant frequency. The MODE pin selects between auto-skip (pulse skipping at light load) and FCCM (continuous conduction at all loads). The internal low-side MOSFET provides synchronous rectification.

Pin Group Name Function
Multiple SW/BOOT/VDD Power and switching
Multiple FB/RF/MODE Control and feedback
Multiple PGOOD/EN/SS Status and control
  • Server CPU/GPU point-of-load
  • FPGA and ASIC core voltage regulation
  • DDR VDDQ and VTT power
  • Telecom distributed power architectures
Manufacturer Part Number Notes
TI TPS53319DQ 14A version
TI TPS53315DQ 5A version
Infineon IR38164MTRPBF Similar POL regulator
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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

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Contact Information

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Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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