TPS54020 (ACTIVE)

4.5V to 17V Input, 10A Synchronous Step-Down SWIFT™ Converter with Out-of-Phase Synchronization

Description

The TPS54020 is a 10-A, 4.5-V to 17-V input SWIFT converter. The innovative 3.5 mm × 3.5 mm HotRod package optimizes high-density step-down designs. The TPS54020 is a full featured converter.

High efficiency is achieved through the innovative integration and packaging of the high-side and low-side MOSFETs. The TPS54020 operates at continuous current mode (CCM) at higher load conditions, and transitions to Eco-mode™ while skipping pulses to boost the efficiency at light loads.

Current limiting on both MOSFETs provides device and system protection. Cycle-by-cycle current limiting in the high-side MOSFET protects for overload situations. Low-side MOSFET zero current detection turns off the low-side MOSFET while operating under light loads. Three selectable current limit thresholds allow a good fit for various applications. A hiccup or cycle-by-cycle overcurrent protection scheme is also selectable.

Thermal shutdown protection disables switching when die temperature exceeds the thermal shutdown trip point and enables switching after the built-in thermal hysteresis and shutdown hiccup time.

The SS pin controls the output voltage start-up ramp and allows for selectable soft-start times. Power supply sequencing is also available by configuring the enable (EN) and the open drain power good (PWRGD) pins.

Two TPS54020 devices may be synchronized 180° out-of-phase by using the SYNC_OUT and CLK pins.

Features

  • Integrated 8-mΩ and 6-mΩ MOSFETs
  • Thermally Enhanced 3.5 mm × 3.5 mm HotRod Package
  • Peak Current Mode Control
  • Eco-modePulse Skip for Higher Efficiency
  • Overcurrent Protection for Both MOSFETs
  • Selectable Overcurrent Protection Schemes
  • Selectable Overcurrent Protection Levels
  • Split Power Rail: 1.6 V to 17 V on PVIN
  • 0.6 V Voltage Reference With ±1% Accuracy
  • 200-kHz to 1.2-MHz Switching Frequency
  • Synchronizes to External Clock
  • Start-Up into Pre-biased Outputs
  • Over-Temperature and Overvoltage Protection
  • –40°C to 150°C Operating Junction Temperature Range
  • Adjustable Soft-Start/Power Sequencing
  • Power Good Output Monitor for Undervoltage and Overvoltage
  • SYNC_OUT Function Provides Output Clock Signal 180° Out-of-Phase
  • Supported by WEBENCH Software Tool
  • For SWIFT Documentation and WEBENCH, visit http://www.ti.com/swift

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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$)
TPS54020 TPS53319 TPS53915 TPS54821 TPS54622 TPS53515 TPS51367 TPS544B20 TPS544C20 TPS51363 TPS51362 TPS54620 TPS53315
1     1     1     1     1     1     1     1     1     1     1     1     1    
4.5     1.5     1.5     4.5     4.5     1.5     3     4.5     4.5     3     3     4.5     3    
17     22     18     17     17     18     22     18     18     22     22     17     15    
0.6     0.6     0.6     0.6     0.6     0.6     0.6     0.6     0.6     0.6     0.6     0.8     0.6    
5     5.5     5.5     15     15     5.5     2     5.5     5.5     2     2     15     5.5    
10     14     12     8     6     12     12     20     30     10     10     6     12    
Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck    
1200     1000     1000     1600     1600     1000     800     1000     1000     800     800     1600     1000    
15     22       11.5     8       16         12     12     8     21    
0.6     0.32     1.35     0.6     0.002     1.35     0.1     8     8     0.56     0.1     0.6     0.32    
98     90       100     98       87         87     87     98     90    
Adjustable     Fixed     Adjustable     Adjustable     Adjustable     Fixed     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable    
External     Not Needed     Not Needed     External     External     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     Not Needed     External     Not Needed    
Enable
Frequency Synchronization
Power Good
Tracking
Adjustable Current Limit
Phase Interleaving
Light Load Efficiency
Synchronous Rectification    
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    
Enable
Frequency Synchronization
Power Good
Synchronous Rectification
Tracking    
Enable
Frequency Synchronization
Power Good
Tracking
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification    
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    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification    
Enable
Frequency Synchronization
Power Good
Tracking
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
SWIFT     SWIFT     SWIFT     SWIFT     SWIFT     SWIFT       SWIFT     SWIFT         SWIFT     SWIFT    
Current Mode     D-CAP     D-CAP3     Current Mode     Current Mode     D-CAP3     D-CAP2     D-CAP
D-CAP2    
D-CAP
D-CAP2    
D-CAP2     D-CAP2     Current Mode     D-CAP    
1     1     0.5     1     1     0.5     1     0.5     0.5     1     1     1     1    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 150     -40 to 85     -40 to 85     -40 to 125     -40 to 150     -40 to 85     -10 to 85         -10 to 85     -10 to 85     -40 to 150     -40 to 85    
15VQFN     22LSON-CLIP     28VQFN-CLIP     14VQFN     14VQFN     28VQFN-CLIP     28VQFN-CLIP     40LQFN-CLIP     40LQFN-CLIP     28VQFN-CLIP     28VQFN-CLIP     14VQFN     40VQFN    
3.10 | 1ku     3.35 | 1ku     3.00 | 1ku     1.90 | 1ku     2.50 | 1ku     2.70 | 1ku     2.70 | 1ku     3.70 | 1ku     3.90 | 1ku     2.10 | 1ku     2.30 | 1ku     2.50 | 1ku     3.50 | 1ku    
WEBENCH® TPS54020
    Min   Max   Range  
  Vin V    4.50 – 17.00V  
  Vout V    0.60 – 5.00V  
  Iout A    ≤ 10A  
  Ambient Temp °C    -40 – 125°C  
Footprint BOM Cost Efficiency
 
   
 
 
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