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

TPS54561 (ACTIVE)

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

 

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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 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)
Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
TPS54561 TPS54060A TPS54160A TPS54360-Q1 TPS54361 TPS54361-Q1 TPS54560 TPS54560-Q1 TPS54561-Q1
4.5    3.5    3.5    4.5    4.5    4.5    4.5    4.5    4.5   
60    60    60    60    60    60    60    60    60   
0.8    0.8    0.8    0.8    0.8    0.8    0.8    0.8    0.8   
59    58    58    58.8    59    59    58.8    58.8    59   
5    0.5    1.5    3.5    3.5    3.5    5    5    5   
1    1    1    1    1    1    1    1    1   
100    100    100    100    100    100    100    100    100   
2500    2500    2500    2500    2500    2500    2500    2500    2500   
0.152    0.116    0.116    0.146    0.152    0.152    0.146    0.146    1.52   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Tracking
UVLO Adjustable   
Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode   
98    98    98    98    98    98    98    98    98   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 85    -40 to 125    -40 to 125    -40 to 125    -40 to 125   
Catalog    Catalog    Catalog    Automotive    Catalog    Automotive    Catalog    Automotive    Automotive   
WSON    MSOP-PowerPAD
VSON   
MSOP-PowerPAD
VSON   
SO PowerPAD    WSON    WSON    SO PowerPAD    SO PowerPAD    WSON   

Other qualified versions of TPS54561

Version Part Number Definition
Automotive TPS54561-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
New! Interactive Design
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WEBENCH® Designer TPS54561

  Min   Max Range
Vin  V 4.5 to 60.0V
Vout  V 0.8 to 58.0V
Iout  A ≤ 5A
Ambient Temp  °C -40 to 150°C


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