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


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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.


  • Integrated 8-mΩ and 6-mΩ MOSFETs
  • Thermally Enhanced 3.5-mm × 3.5-mm HotRod™
  • Peak Current Mode Control
  • Eco-mode™ Pulse 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 Prebiased Outputs
  • Overtemperature and Overvoltage Protection
  • –40°C to 150°C Operating Junction
    Temperature Range
  • Adjustable Soft-Start and 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,

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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)
Special Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Package Group
TPS54020 TPS53513 TPS53515 TPS53915
4.5    1.5    1.5    1.5   
17    18    18    18   
0.6    0.6    0.6    0.6   
5    5.5    5.5    5.5   
10    8    12    12   
1    1    1    1   
200    250    250    250   
1200    1000    1000    1000   
0.6    1.35    1.35    1.35   
Adjustable Current Limit
Frequency Synchronization
Light Load Efficiency
Phase Interleaving
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification   
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification   
Dynamic Voltage Scaling
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Voltage Margining   
Current Mode    D-CAP3    D-CAP3    D-CAP3   
98    80    80    80   
-40 to 150    -40 to 85    -40 to 85    -40 to 85   
Catalog    Catalog    Catalog    Catalog   
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WEBENCH® Designer TPS54020

  Min   Max Range
Vin  V 4.5 to 17.0V
Vout  V 0.6 to 5V
Iout  A ≤ 10A
Ambient Temp  °C -40 to 125°C

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