TPS54561 4.5V to 60V Input 5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™ | TI.com

TPS54561 (ACTIVE)

4.5V to 60V Input 5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

4.5V to 60V Input 5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™ - TPS54561
 

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Description

The TPS54561 is a 60-V, 5-A, step down regulator with an integrated high side MOSFET. The device survives load dump pulses up to 65V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load supply current to 152 µA. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can increase using an external resistor divider at the enable pin. The output voltage start up ramp is controlled by the soft start pin that can also be configured for sequencing/tracking. An open drain power good signal indicates the output is within 93% to 106% of its nominal voltage.

A wide adjustable switching-frequency range allows for optimization of either efficiency or external component size. Cycle-by-cycle current limit, frequency foldback and thermal shutdown protects internal and external components during an overload condition.

The TPS54561 is available in an 10-pin 4-mm × 4-mm WSON package.

Features

  • High Efficiency at Light Loads with Pulse Skipping Eco-mode™
  • 87-mΩ High-Side MOSFET
  • 152-µA Operating Quiescent Current and 2-µA Shutdown Current
  • 100-kHz to 2.5-MHz Adjustable Switching Frequency
  • Synchronizes to External Clock
  • Low Dropout at Light Loads with Integrated BOOT Recharge FET
  • Adjustable UVLO Voltage and Hysteresis
  • UV and OV Power Good Output
  • Adjustable Soft-Start and Sequencing
  • 0.8-V 1% Internal Voltage Reference
  • 10-Pin WSON with Thermal Pad Package
  • –40°C to 150°C TJ Operating Range
  • Create a Custom Design using the TPS54561 with the WEBENCH® Power Designer

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Parametrics Compare all products in Buck converters (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)
Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
Type
TPS54561 TPS54560B-Q1
4.5     4.5    
60     60    
0.8     0.8    
59     58.8    
5     5    
1     1    
100     100    
2500     2500    
0.152     0.146    
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
UVLO Adjustable    
Enable
Frequency Synchronization
Light Load Efficiency
UVLO Adjustable    
Current Mode     Current Mode    
98     98    
-40 to 125     -40 to 125    
Catalog     Automotive    
WSON | 10     SO PowerPAD | 8    
Converter     Converter    
New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS54561

  Min   Max Range
Vin  V 4.5 to 60.0V
Vout  V 0.8 to 58V
Iout  A ≤ 5A
Ambient Temp  °C -40 to 150°C


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