4.5-18V 20A SWIFT™ with PMBus™ Programmability and Voltage, Current and Temperature Monitoring - TPS544B20

TPS544B20 (ACTIVE)

4.5-18V 20A SWIFT™ with PMBus™ Programmability and Voltage, Current and Temperature Monitoring

 

Description

The TPS544B20 and TPS544C20 devices are PMBus compatible, non-isolated DC-DC Integrated FET converters, capable of high-frequency operation and delivering 20-A , or 30-A current output from a 5 mm × 7 mm package, enabling high-power density and fast transient performance with minimal PCB area. The PMBus interface provides for converter configuration as well as monitoring of key parameters including output voltage, current and an optional external temperature. High-frequency, low-loss switching, provided by an integrated NexFET power stage and optimized drivers, allows for very high-density power solutions and reduced inductor and filter capacitor sizes. Response to fault conditions can be set to either restart or latch off depending on system requirements.

Features

  • PMBus-Enabled Converters: 20 A, 30 A
  • 4.5-V to 18-V input, 0.6-V to 5.5-V Output
  • 5 mm × 7 mm LQFN Package with 0.5-mm Pitch
  • Single Thermal Pad
  • Integrated 4.5-mΩ and 2.0-mΩ Stacked NexFET Power Stage
  • 600-mV, 0.5% Reference
  • Lossless, Low-Side MOSFET Current Sensing
  • Selectable D-CAP and D-CAP2 Mode Control
  • Differential Remote Sensing
  • Monotonic Start-Up into Pre-Biased Output
  • Output Voltage Margin and Trim
  • Output Voltage and Output Current Reporting
  • External Temperature Monitoring with 2N3904
  • Programmable via PMBus
    • Overcurrent Protection
    • UVLO, Soft-Start
    • PGOOD, OV, UV, OT Levels
    • Fault Responses
    • Turn-On and Turn-Off Delays
  • Thermal Shutdown
  • Pin Compatible 20-A, 30-A Converters

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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
Communication Interface
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
Approx. Price (US$)
TPS544B20 TPS544B25 TPS544C20 TPS544C25
4.5     4.5     4.5     4.5    
18     18     18     18    
0.6     0.5     0.6     0.5    
5.5     5.5     5.5     5    
20     20     30     30    
1     1     1     1    
250     200     250     200    
1000     1000     1000     1000    
8     9.5     8     7.7    
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
UVLO Adjustable
Voltage Margining    
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
UVLO Adjustable
Voltage Margining    
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
UVLO Adjustable
Voltage Margining    
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
Tracking
Voltage Margining
UVLO Adjustable    
PMBus     PMBus     PMBus     PMBus    
D-CAP
D-CAP2    
Voltage Mode     D-CAP
D-CAP2    
Voltage Mode    
80     80     80     80    
-40 to 85     -40 to 125     -40 to 85     -40 to 125    
Catalog     Catalog     Catalog     Catalog    
LQFN-CLIP     LQFN-CLIP     LQFN-CLIP     LQFN-CLIP    
3.55 | 1ku     4.08 | 1ku     3.90 | 1ku     4.49 | 1ku    
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WEBENCH® Designer TPS544B20

  Min   Max Range
Vin  V 4.5 to 18.0V
Vout  V 0.6 to 5.5V
Iout  A ≤ 20A
Ambient Temp  °C -40 to 150°C


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