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

TPS543B20 (ACTIVE)

4-19Vin, 25A Stackable, Synchronous Step-down SWIFT™ Converter With Adaptive Internal Compensation

 

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 x 7 mm PowerStack™ package with a layout friendly thermal pad.

Features

  • Internally-compensated Advanced Current Mode Control 25-A POL
  • Input Voltage Range: 4.0-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 from 300 kHz to 2 MHz
  • Pin Strapping Programmable Reference from 0.6 V to 1.1 V with 0.5% Accuracy
  • Differential Remote Sensing
  • Safe Start-Up into Pre-Biased 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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Parametrics Compare all products in Buck Converter (Integrated Switch)

 
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)
Special Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
TPS543B20 TPS53353 TPS543C20 TPS548B22 TPS56221
4    1.5    4    1.5    4.5   
19    15    16    18    14   
0.6    0.6    0.6    0.6    0.6   
5.5    5.5    5.5    5.5    12   
25    20    40    25    25   
1    1    1    1    1   
300    250    300    425    300   
2000    1000    2000    1050    1000   
3    0.32    4.3    2    2.5   
Enable
Frequency Synchronization
Over Current Protection
Phase Interleaving
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
UVLO Adjustable   
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification   
Adjustable Current Limit
Enable
Frequency Synchronization
N/A
Over Current Protection
Phase Interleaving
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification   
Adjustable Current Limit
Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
UVLO Adjustable   
Enable
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification   
Current Mode    D-CAP    Current Mode    D-CAP3    Voltage Mode   
  90      80    93   
-40 to 125    -40 to 85    -40 to 125    -40 to 125    -40 to 125   
Catalog    Catalog    Catalog    Catalog    Catalog   
LQFN-CLIP    LSON-CLIP    LQFN-CLIP    LQFN-CLIP    LSON-CLIP   
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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


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