TPS54361 4.5 to 60V Input 3.5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™ | TI.com

TPS54361 (ACTIVE) 4.5 to 60V Input 3.5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

 

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Description

The TPS54361 device is a 60-V, 3.5-A, step-down regulator with an integrated high-side MOSFET. The device survives load dump pulses up to 65 V 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 startup ramp is controlled by the soft-start pin that can also be configured for sequencing and tracking. An open-drain power-good signal indicates the output is within 93% to 106% of the 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 TPS54361 device is available in a 10-pin 4-mm × 4-mm WSON package.

Features

  • High Efficiency at Light Loads With Pulse-Skipping Eco-Mode™
  • 89-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 TPS54361 with the WEBENCH® Power Designer

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WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS54361

  Min   Max Range
Vin  V 4.5 to 60.0V
Vout  V 0.8 to 58V
Iout  A ≤ 3.5A
Ambient Temp  °C -40 to 85°C

Parametrics

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Part number Order 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 Package size: mm2:W x L (PKG)
TPS54361 Order now 4.5     60     0.8     59     3.5     1     100     2500     0.152     Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Tracking
UVLO Adjustable    
Current Mode     98     -40 to 85     Catalog     WSON | 10     Converter     See datasheet (WSON)    
LM76003 Order now 3.5     60     1     57     3.5     1     300     2200     0.015     Enable
Forced PWM
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
Wettable Flanks Package    
Current Mode     98     -40 to 125     Catalog     WQFN | 30     Converter     30WQFN: 24 mm2: 4 x 6 (WQFN | 30)    
LMR16030 Order now 4.3     60     1     50     3     1     200     2500     0.04     Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Tracking
UVLO Adjustable    
Current Mode     98     -40 to 125     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS54360B Order now 4.5     60     1     58.8     3.5     1     100     2500     0.146     Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Pre-Bias Start-Up
Wettable Flanks Package    
Current Mode     98     -40 to 150     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS54360B-Q1 Order now 4.5     60     0.8     58.8     3.5     1     100     2500     0.146     Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
UVLO Adjustable    
Current Mode     98     -40 to 125     Automotive