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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Regulated Outputs (#) 1
Vin (Min) (V) 4.5
Vin (Max) (V) 17
Vout (Min) (V) 0.6
Vout (Max) (V) 5
Iout (Max) (A) 10
Iout2 (Max) (A) -
Vout2 (Min) (V) -
Vout2 (Max) (V) -
Topology Buck
  • Boost
  • Buck
  • Buck-Boost
  • Inverting Buck-Boost
Switching Frequency (Max) (kHz) 1200
Switch Current Limit (Typ) (A) 15
Iq (Typ) (mA) 0.6
Duty Cycle (Max) (%) 98
Soft Start Adjustable
  • Adjustable
  • Fixed
  • None
Compensation External
  • External
  • Internal
  • Not Needed
Special Features Enable
Frequency Synchronization
Power Good
Tracking
Adjustable Current Limit
Phase Interleaving
Light Load Efficiency
Synchronous Rectification
  • Adjustable Current Limit
  • Adjustable UVLO
  • Dynamic Voltage Scaling
  • Enable
  • Frequency Synchronization
  • Light Load Efficiency
  • Phase Interleaving
  • Power Good
  • Synchronous Rectification
  • Tracking
Control Mode Current Mode
  • COT with emulated ripple
  • Constant on-time (COT)
  • Current Mode
  • D-CAP
  • D-CAP+
  • D-CAP2
  • D-CAP3
  • Voltage Mode
Preset Vout (V) -
Vref Accuracy (Typ) (%) 1
Rating Catalog
  • Automotive
  • Catalog
  • HiRel Enhanced Product
  • High Temp
  • Military
  • Space
Operating Temperature Range (C) -40 to 150 °C to °C
Approx. Price (US$) 3.10 | 1ku
Package Group VQFN
  • CFP
  • DDPAK/TO-263
  • DSBGA
  • DSLGA
  • HTSSOP
  • LQFN-CLIP
  • LSON-CLIP
  • MSOP-PowerPAD
  • PDIP
  • QFN
  • SO PowerPAD
  • SOIC
  • SON
  • SOT
  • SOT-23
  • TO-220
  • TO-263
  • TSSOP
  • USON
  • VQFN
  • VQFN-CLIP
  • VSON
  • VSSOP
  • WQFN
  • WSON
  • XCEPT
  Sample & Buy Reset Update

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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  
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