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TPS543A26T

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4V to 18V input, 16A synchronous SWIFT™ step-down converter with thermally enhanced packaging

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Data sheet

TPS543A26T

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck Iout (max) (A) 16 Vin (max) (V) 18 Vin (min) (V) 4 Vout (max) (V) 7 Vout (min) (V) 0.5 Features Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, Overcurrent protection, Power good, Prebias startup, Soft-start adjustable, Synchronous rectification, UVLO adjustable Control mode ACM/AECM Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.0012 Duty cycle (max) (%) 94
Rating Catalog Topology Buck Iout (max) (A) 16 Vin (max) (V) 18 Vin (min) (V) 4 Vout (max) (V) 7 Vout (min) (V) 0.5 Features Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, Overcurrent protection, Power good, Prebias startup, Soft-start adjustable, Synchronous rectification, UVLO adjustable Control mode ACM/AECM Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.0012 Duty cycle (max) (%) 94
WQFN-FCRLF (RAS) 17 11.25 mm² 4.5 x 2.5
  • Integrated 6.5mΩ and 2mΩ MOSFETs
  • 4V to 18V input voltage range
  • Fixed-frequency, internally compensated, advanced current mode (ACM) control
  • 0.5V to 7V output voltage range
  • True differential remote sense amplifier (RSA)
  • Three selectable PWM ramp options to optimize the control loop performance
  • Five selectable switching frequencies: 500kHz, 750kHz, 1MHz, 1.5MHz, and 2.2MHz
  • Synchronizable to an external clock
  • 0.5V, ±0.5% voltage reference accuracy over full temperature range
  • 1ms, 2ms, 4ms, and 8ms selectable soft-start times
  • Monotonic start-up into prebiased outputs
  • Selectable current limits to support 16A and 12A operation
  • Enable with adjustable input undervoltage lockout
  • Power-good output monitor
  • Output overvoltage, output undervoltage, input undervoltage, overcurrent, and overtemperature protection
  • –40°C to 150°C operating junction temperature
  • 2.5mm × 4.5mm, 17-pin WQFN-HR package with 0.5mm pitch
  • Lead-free (RoHS compliant), Lead-free (Pb-free) conversion
  • Pin compatible with the 25A - TPS543B25, 20A - TPS543B22, and 12A - TPS543A22
  • Create a custom design using the TPS543A26T with the WEBENCH Power Designer
  • Integrated 6.5mΩ and 2mΩ MOSFETs
  • 4V to 18V input voltage range
  • Fixed-frequency, internally compensated, advanced current mode (ACM) control
  • 0.5V to 7V output voltage range
  • True differential remote sense amplifier (RSA)
  • Three selectable PWM ramp options to optimize the control loop performance
  • Five selectable switching frequencies: 500kHz, 750kHz, 1MHz, 1.5MHz, and 2.2MHz
  • Synchronizable to an external clock
  • 0.5V, ±0.5% voltage reference accuracy over full temperature range
  • 1ms, 2ms, 4ms, and 8ms selectable soft-start times
  • Monotonic start-up into prebiased outputs
  • Selectable current limits to support 16A and 12A operation
  • Enable with adjustable input undervoltage lockout
  • Power-good output monitor
  • Output overvoltage, output undervoltage, input undervoltage, overcurrent, and overtemperature protection
  • –40°C to 150°C operating junction temperature
  • 2.5mm × 4.5mm, 17-pin WQFN-HR package with 0.5mm pitch
  • Lead-free (RoHS compliant), Lead-free (Pb-free) conversion
  • Pin compatible with the 25A - TPS543B25, 20A - TPS543B22, and 12A - TPS543A22
  • Create a custom design using the TPS543A26T with the WEBENCH Power Designer

The TPS543A26T is a high-efficiency, 18V, 16A, synchronous buck converter employing an internally compensated, fixed-frequency advanced current mode (ACM) control architecture, which while always operating under FCCM, generates output voltages from 0.5V to 7V. The device is capable of providing high efficiency while operating at a switching frequency up to 2.2MHz, making the device an excellent choice for designs requiring a small design size. The fixed frequency controller can operate from 500kHz to 2.2MHz and can be synchronized to an external clock using the SYNC pin. Additional features include a high accuracy voltage reference, two-wire remote sense, selectable soft-start times, monotonic start-up into prebiased outputs, selectable current limits, adjustable UVLO through the EN pin, and a full suite of fault protections.

The TPS543A26T is available in a small 2.5mm × 4.5mm HotRod™ WQFN-FCRLF package.

The TPS543A26T is a high-efficiency, 18V, 16A, synchronous buck converter employing an internally compensated, fixed-frequency advanced current mode (ACM) control architecture, which while always operating under FCCM, generates output voltages from 0.5V to 7V. The device is capable of providing high efficiency while operating at a switching frequency up to 2.2MHz, making the device an excellent choice for designs requiring a small design size. The fixed frequency controller can operate from 500kHz to 2.2MHz and can be synchronized to an external clock using the SYNC pin. Additional features include a high accuracy voltage reference, two-wire remote sense, selectable soft-start times, monotonic start-up into prebiased outputs, selectable current limits, adjustable UVLO through the EN pin, and a full suite of fault protections.

The TPS543A26T is available in a small 2.5mm × 4.5mm HotRod™ WQFN-FCRLF package.
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* Data sheet TPS543A26T 4V to 18V Input, 16 A, Synchronous, SWIFT Step-Down Converter With Internally Compensated, Advanced Current Mode Control in Thermally Enhanced Package datasheet (Rev. A) PDF | HTML 29 May 2024

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS543B25TEVM — TPS543B25T evaluation module for synchronous SWIFT™ step-down converter

The TPS543B25TEVM is an evaluation module (EVM) for the TPS543B25T integrated circuit (IC). The TPS543B25T is a synchronous step-down converter with thermally enhanced packaging (TEP), which removes the top side mold compound of a standard over-molded IC in order to improve thermal performance (...)
User guide: PDF | HTML
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Simulation model

TPS543A26 PSpice Transient Model (Rev. A)

SLVME21A.ZIP (124 KB) - PSpice Model
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Simulation model

TPS543B22 SIMPLIS Transient and Average Model (Rev. A)

SLVMDY4A.ZIP (928 KB) - SIMPLIS Model
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Package Pins CAD symbols, footprints & 3D models
WQFN-FCRLF (RAS) 17 Ultra Librarian
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