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.

For all available packages, see the orderable addendum at the

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 Step-Down (Buck) Converter

 
Regulated Outputs (#)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Topology
Switching Frequency (Max) (kHz)
Switch Current Limit (Typ) (A)
Iq (Typ) (mA)
Duty Cycle (Max) (%)
Soft Start
Compensation
Special Features
Brand
Control Mode
Vref Accuracy (Typ) (%)
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TPS544B20 TPS544C20 TPS53318 TPS53915 TPS53319 TPS53515 TPS53513 TPS56428 TPS53353 TPS53355 TPS56221 TPS54425 TPS54340
1     1     1     1     1     1     1     1     1     1     1     1     1    
4.5     4.5     1.5     1.5     1.5     1.5     1.5     4.5     1.5     1.5     4.5     4.5     4.5    
18     18     22     18     22     18     18     18     15     15     14     18     42    
0.6     0.6     0.6     0.6     0.6     0.6     0.6     0.6     0.6     0.6     0.6     0.76     0.8    
5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     12     5.5     41    
20     30     8     12     14     12     8     4     20     30     25     4     3.5    
Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck
Inverting Buck-Boost    
1000     1000     1000     1000     1000     1000     1000     650     1000     1000     1000     700     2500    
    8       22       9.8     5.3     28     40     35     5.4     5.5    
8     8     0.32     1.35     0.32     1.35     1.35     0.25     0.32     0.32     2.5     0.85     0.146    
    90       90         85     90     90     93     90     98    
Adjustable     Adjustable     Adjustable     Adjustable     Fixed     Fixed     Fixed     Fixed     Adjustable     Adjustable     Adjustable     Adjustable     Fixed    
Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     External     Not Needed     External    
Adjustable Current Limit
Adjustable UVLO
Dynamic Voltage Scaling
Enable
PMBus
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
Telemetry
Voltage Margining    
Adjustable Current Limit
Adjustable UVLO
Dynamic Voltage Scaling
Enable
PMBus
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
Telemetry
Voltage Margining    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
Dynamic Voltage Scaling
Enable
Light Load Efficiency
PMBus
Power Good
Synchronous Rectification
Voltage Margining    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification    
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
Enable
Light Load Efficiency
Synchronous Rectification    
Enable
Power Good
Synchronous Rectification    
Enable
Frequency Synchronization
Light Load Efficiency
Adjustable UVLO    
SWIFT     SWIFT     SWIFT     SWIFT     SWIFT     SWIFT     SWIFT     SWIFT     SWIFT     SWIFT     SWIFT     SWIFT      
D-CAP
D-CAP2    
D-CAP
D-CAP2    
D-CAP     D-CAP3     D-CAP     D-CAP3     D-CAP3     D-CAP2     D-CAP     D-CAP     Voltage Mode     D-CAP2     Current Mode    
0.5     0.5     1     0.5     1     0.5     0.5     1     1     1     1     1     1    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
    -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 125     -40 to 85     -40 to 85     -40 to 125     -40 to 85     -40 to 125    
40LQFN-CLIP     40LQFN-CLIP     22LSON-CLIP     28VQFN-CLIP     22LSON-CLIP     28VQFN-CLIP     28VQFN-CLIP     8SO PowerPAD     22LSON-CLIP     22LSON-CLIP     22LSON-CLIP     14HTSSOP     8SO PowerPAD    
3.70 | 1ku     3.90 | 1ku     3.05 | 1ku     3.00 | 1ku     3.35 | 1ku     2.70 | 1ku     2.55 | 1ku     1.22 | 1ku     3.50 | 1ku     3.75 | 1ku     3.75 | 1ku     1.02 | 1ku     1.68 | 1ku    
WEBENCH® TPS544B20
    Min   Max   Range  
  Vin V    4.50 – 18.00V  
  Vout V    0.60 – 5.50V  
  Iout A    ≤ 20A  
  Ambient Temp °C    -40 – 150°C  
Footprint BOM Cost Efficiency
 
   
 
 
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