2.95V to 6V Input, 3A Synchronous Step-Down Converter - TPS5432

TPS5432 (ACTIVE)

2.95V to 6V Input, 3A Synchronous Step-Down Converter

Recommended alternative parts

  • TPS54519  -  Looking for a device with more output current? Try the TPS54519.
  • TPS54328  -  Looking for a device with higher input voltage? Try the TPS54328.

Description

The TPS5432 is a 6V, 3A, low Iq, current mode, synchronous monolithic buck converter with integrated MOSFETs. The TPS5432 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by 700kHz switching frequency. SOIC-8 package with exposed thermal pad provides both thermally enhanced solution and easy to use.

The TPS5432 provides accurate regulation for a variety of loads with an accurate 3.0% voltage reference over temperature.

Efficiency is maximized through the integrated 70mΩ MOSFETs and 360μA typical supply current. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

The output voltage startup ramp is controlled by the slow start pin. A ceramic capacitor at this pin can easily adjust the slow start time.

Frequency fold back and thermal shutdown protects the device during an over-current condition.

Features

  • Two 70mΩ (typical) MOSFETs for 3A Continuous Output Current
  • Current Mode Control With External Compensation
  • 700kHz Switching Frequency
  • 360µA no Load Quiescent Operating Current (no switching)
  • 0.808V Internal Voltage Reference
  • ±2.0% Reference Accuracy at 25°C
  • ±3.0% Reference Accuracy Over Temperature Range –40°C~125°C
  • Stable Operation With Ceramic Output Capacitor
  • Adjustable Slow Start
  • Cycle by Cycle Current Limit, and Frequency Fold Back Protection
  • Thermally Enhanced 8-Pin SOIC (DDA) Package

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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$)
TPS5432 TPS54319 TPS54331 TPS54678 TPS54618 TPS54332 TPS54531 TPS53316 TPS54618-Q1 TPS54560 TPS53318 TPS54418 TPS53353
1     1     1     1     1     1     1     1     1     1     1     1     1    
2.95     2.95     3.5     2.95     2.95     3.5     3.5     2.9     2.95     4.5     1.5     2.95     1.5    
6     6     28     6     6     28     28     6     6     60     22     6     15    
0.808     0.8     0.8     0.6     0.8     0.8     0.8     0.6     0.8     0.8     0.6     0.8     0.6    
4.5     4.5     25     4.5     4.5     25     25     5.5     4.5     58.8     5.5     4.5     5.5    
3     3     3     6     6     3.5     5     5     6     5     8     4     20    
Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck
Inverting Buck-Boost    
Buck     Buck     Buck    
700     2000     570     2000     2000     1000     570     2000     2000     2500     1000     2000     1000    
5.7     6.6     5.8     9     9     6.5     8.5     9     9     7.5     8     5     28    
0.36     0.36     0.11     0.25     0.25     0.082     0.11     0.32     0.25     0.146     0.32     0.35     0.32    
98     98     90     98     98     90     90     99     98     98     90     98     90    
Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Fixed     Adjustable     Adjustable     Adjustable    
External     External     External     External     External     External     External     External     External     External     Not Needed     External     Not Needed    
Enable
Synchronous Rectification    
Enable
Frequency Synchronization
Power Good
Tracking
Synchronous Rectification    
Enable
Light Load Efficiency
Adjustable UVLO    
Enable
Frequency Synchronization
Power Good
Tracking
Adjustable UVLO
Synchronous Rectification    
Adjustable UVLO
Enable
Frequency Synchronization
Power Good
Synchronous Rectification
Tracking    
Enable
Light Load Efficiency
Adjustable UVLO    
Enable
Light Load Efficiency    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification    
Adjustable UVLO
Enable
Frequency Synchronization
Power Good
Synchronous Rectification
Tracking    
Enable
Frequency Synchronization
Light Load Efficiency
Adjustable UVLO    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
Enable
Frequency Synchronization
Power Good
Adjustable UVLO
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
      SWIFT     SWIFT           SWIFT     SWIFT     SWIFT     SWIFT     SWIFT    
Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Voltage Mode     Current Mode     Current Mode     D-CAP     Current Mode     D-CAP    
2     3     3.5     1     1     3.5     3.5     1     1     1     1     1     1    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Automotive     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 150     -40 to 150     -40 to 150     -40 to 150     -40 to 150     -40 to 85     -40 to 85     -40 to 125     -40 to 125     -40 to 85     -40 to 150     -40 to 85    
8SO PowerPAD     16WQFN     8SO PowerPAD
8SOIC    
16WQFN     16WQFN     8SO PowerPAD     8SO PowerPAD     16QFN     16WQFN     8SO PowerPAD     22LSON-CLIP     16WQFN     22LSON-CLIP    
1.00 | 1ku     0.80 | 1ku     0.60 | 1ku     2.75 | 1ku     2.60 | 1ku     0.73 | 1ku     0.90 | 1ku     1.99 | 1ku     3.04 | 1ku     2.30 | 1ku     3.05 | 1ku     2.15 | 1ku     3.50 | 1ku    
WEBENCH® TPS5432
    Min   Max   Range  
  Vin V    2.95 – 6.00V  
  Vout V    0.81 – 5.50V  
  Iout A    ≤ 3A  
  Ambient Temp °C    -40 – 150°C  
Footprint BOM Cost Efficiency
 
   
 
 
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