TPS54A24 4.5-V to 17-V input, 10-A synchronous SWIFT™ step-down converter | TI.com

TPS54A24 (ACTIVE) 4.5-V to 17-V input, 10-A synchronous SWIFT™ step-down converter

 

Description

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.

Features

  • 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

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WEBENCH® Designer TPS54A24

  Min   Max Range
Vin  V 4.5 to 17.0V
Vout  V 0.6 to 12V
Iout  A ≤ 10A
Ambient Temp  °C -40 to 150°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)
TPS54A24 Order now 4.5     17     0.6     12     10     1     200     1600     0.58     Enable
Frequency Synchronization
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking    
Current Mode     98     -40 to 150     Catalog     WQFN | 24     Converter     24WQFN: 16 mm2: 4 x 4 (WQFN | 24)    
TPS54020 Order now 4.5     17     0.6     5     10     1     200     1200     0.6     Adjustable Current Limit
Enable
Frequency Synchronization
Light Load Efficiency
Phase Interleaving
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
Soft Start Adjustable    
Current Mode     98     -40 to 150     Catalog     VQFN-HR | 15     Converter     15VQFN-HR: 12 mm2: 3.5 x 3.5 (VQFN-HR | 15)    
TPS54824 Order now 4.5     17     0.6     12     8     1     200     1600     0.58     Enable
Frequency Synchronization
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
Soft Start Adjustable    
Current Mode     98     -40 to 150     Catalog     VQFN-HR | 18     Converter     18VQFN-HR: 12 mm2: 3.5 x 3.5 (VQFN-HR | 18)