TPS53318 High-Efficiency 8-A Synchronous Buck Converter with Eco-mode ™ | TI.com

TPS53318
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High-Efficiency 8-A Synchronous Buck Converter with Eco-mode ™

 

Description

The TPS53318 and TPS53319 devices are D-CAP mode, 8-A or 14-A synchronous switchers with integrated MOSFETs. They are designed for ease of use, low external component count, and space-conscious power systems.

These devices feature accurate 1%, 0.6-V reference, and integrated boost switch. A sample of competitive features include: 1.5-V to 22-V wide conversion input voltage range, very low external component count, D-CAP™ mode control for super fast transient, auto-skip mode operation, internal soft-start control, selectable frequency, and no need for compensation.

The conversion input voltage ranges from 1.5 V to 22 V, the supply voltage range is from 4.5 V to 25 V, and the output voltage range is from 0.6 V to 5.5 V.

These devices are available in 5 mm x 6 mm, 22-pin QFN package and is specified from –40°C to 85°C.

Features

  • Conversion Input Voltage Range: 1.5 V to 22 V
  • VDD Input Voltage Range: 4.5 V to 25 V
  • 91% Efficiency from 12 V to 1.5 V at 14 A
  • Output Voltage Range: 0.6 V to 5.5 V
  • 5-V LDO Output
  • Supports Single-Rail Input
  • Integrated Power MOSFETs with 8 A (TPS53318) or 14 A (TPS53319) of Continuous Output Current
  • Auto-Skip Eco-mode™ for Light-Load Efficiency
  • < 110 µA Shut Down Current
  • D-CAP™ Mode with Fast Transient Response
  • Selectable Switching Frequency from 250 kHz to 1 MHz with External Resistor
  • Selectable Auto-Skip or PWM-Only Operation
  • Built-in 1% 0.6-V Reference.
  • 0.7-ms, 1.4-ms, 2.8-ms and 5.6-ms Selectable Internal Voltage Servo Soft-Start
  • Integrated Boost Switch
  • Pre-Charged Start-Up Capability
  • Adjustable Overcurrent Limit with Thermal Compensation
  • Overvoltage, Undervoltage, UVLO and Over-Temperature Protection
  • Supports All Ceramic Output Capacitors
  • Open-Drain Power Good Indication
  • Incorporates NexFET™ Power Block Technology
  • 22-Pin QFN (DQP) Package with PowerPAD™

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WEBENCH® Designer TPS53318

  Min   Max Range
Vin  V 1.5 to 22.0V
Vout  V 0.6 to 5.5V
Iout  A ≤ 8A
Ambient Temp  °C -40 to 125°C

Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
TPS53318 Order now 1.5     22     0.6     5.5     8     1     250     1000     0.32     Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
D-CAP     90     -40 to 85     Catalog     LSON-CLIP | 22     Converter     22LSON-CLIP: 30 mm2: 5 x 6 (LSON-CLIP | 22)