TPS543B20 4-19Vin 25A Stackable Synchronous Step-down SWIFT™ Converter w/ Adaptive Internal Compensation | TI.com

TPS543B20
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4-19Vin 25A Stackable Synchronous Step-down SWIFT™ Converter w/ Adaptive Internal Compensation

 

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Achieve ultra-fast transient response AND true fixed frequency with Internally-compensated Advanced Current Mode. Download now

Description

The TPS543B20 employs an internally compensated emulated peak-current-mode control, with a clock synchronizable, fixed-frequency modulator for EMI-sensitive POL. The internal integrator and directly amplifying ramp tracking loop eliminate the need for external compensation over a wide range of frequencies thereby making the system design flexible, dense, and simple. Optional API and body braking help improve transient performance by significantly reducing undershoot and overshoot, respectively. Integrated NexFET™ MOSFETs with low-loss switching facilitate high efficiency and deliver up to 25 A in a 5-mm × 7-mm PowerStack™ package with a layout friendly thermal pad. Two TPS543B20 devices can be stacked together to provide up to 50-A point-of-load.

Features

  • Internally-Compensated Advanced Current Mode Control 25-A POL
  • Input Voltage Range: 4 V to 19 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Integrated 4.1/1.9-mΩ Stacked NexFET™ Power Stage With Lossless Low-Side Current Sensing
  • Fixed Frequency - Synchronization to an External Clock and/or Sync Out
  • Pin Strapping Programmable Switching Frequency
    • 300 kHz to 2 MHz for Standalone
    • 300 kHz to 1 MHz for Stackable
  • Stack 2× for up to 50 A With Current Share, Voltage Share, and CLK Sync
  • Pin Strapping Programmable Reference from 0.6 V to 1.1 V With 0.5% Accuracy
  • Differential Remote Sensing
  • Safe Start-Up into Prebiased Output
  • High-Accuracy Hiccup Current Limit
  • Asynchronous Pulse Injection (API) and Body Braking
  • 40-pin, 5-mm × 7-mm LQFN Package with 0.5-mm Pitch and Single Thermal Pad
  • Create a Custom Design Using the TPS543B20 With the WEBENCH® Power Designer

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WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS543B20

  Min   Max Range
Vin  V 4.0 to 19.0V
Vout  V 0.6 to 5.5V
Iout  A ≤ 25A
Ambient Temp  °C -40 to 150°C

Parametrics

Compare all products in Buck converters (integrated switch) Email Download to Excel
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)
TPS543B20 Order now 4     19     0.6     5.5     25     1     300     2000     3     Enable
Frequency Synchronization
Over Current Protection
Phase Interleaving
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Fixed
Differential Remote Sense
Forced PWM
Soft Start Adjustable
Adjustable Current Limit    
Current Mode     70     -40 to 125     Catalog     LQFN-CLIP | 40     Converter     40LQFN-CLIP: 35 mm2: 5 x 7 (LQFN-CLIP | 40)    
TPS543C20 Order now 4     14     0.6     5.5     40     1     300     2000     4.3     Enable
Frequency Synchronization
Over Current Protection
Phase Interleaving
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Fixed
Differential Remote Sense
Forced PWM
Soft Start Adjustable
Adjustable Current Limit    
Current Mode     70     -40 to 125     Catalog     LQFN-CLIP | 40     Converter     40LQFN-CLIP: 35 mm2: 5 x 7 (LQFN-CLIP | 40)    
TPS544C25 Order now 4.5     18     0.5     5     30     1     200     1000     7.7     Adjustable Current Limit
Enable
Frequency Synchronization
PMBus
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable
Voltage Margining
Differential Remote Sense
Over Current Protection
Adjustable Current Limit
Forced PWM
Soft Start Adjustable    
Voltage Mode     80     -40 to 125     Catalog     LQFN-CLIP | 40     Converter     40LQFN-CLIP: 35 mm2: 5 x 7 (LQFN-CLIP | 40)    
TPS548B22 Order now 1.5     18     0.6     5.5     25     1     425     1050     2     Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable
Differential Remote Sense
Forced PWM
Over Current Protection
Soft Start Adjustable    
D-CAP3     80     -40 to 125     Catalog     LQFN-CLIP | 40     Converter     40LQFN-CLIP: 35 mm2: 5 x 7 (LQFN-CLIP | 40)    
TPS548D22 Order now 1.5     16     0.6     5.5     40     1     425     1050     2     Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable
Differential Remote Sense
Forced PWM
Over Current Protection
Soft Start Adjustable    
D-CAP3     80