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TPS544B27W

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4V to 18V input, 20A, PMBus and SVID synchronous step-down converter

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Data sheet

TPS544B27W

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 18 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 0.25 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Adjustable soft start, Differential Remote Sense, Enable, Extended security, Forced PWM, Light-load efficiency, Overcurrent protection, PMBus, Power good, Prebias startup, SVID, Synchronous rectification, Telemetry, UVLO adjustable, VID Interface, Voltage Margining Control mode D-CAP+ Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.009 Duty cycle (max) (%) 80
Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 18 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 0.25 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Adjustable soft start, Differential Remote Sense, Enable, Extended security, Forced PWM, Light-load efficiency, Overcurrent protection, PMBus, Power good, Prebias startup, SVID, Synchronous rectification, Telemetry, UVLO adjustable, VID Interface, Voltage Margining Control mode D-CAP+ Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.009 Duty cycle (max) (%) 80
WQFN-FCRLF (VBD) 33 20 mm² 5 x 4
  • PMBus 1.5 interface with NVM for configuration, telemetry (V/I/T), and fault reporting
  • Input voltage: 4V to 18V
  • Output voltage: 0.25V to 5.5V
  • Supports external 5V bias improving efficiency and enabling 2.7V minimum input voltage
  • Output current: 20A continuous and 35A peak
  • Cycle-by-cycle valley IOUT OCF limit programmable up to 35A
  • Input power monitoring (PIN sense)
  • Programmable DCM or FCCM operation
  • Switching frequency: 400kHz to 2MHz
  • Programmable internal loop compensation including droop (DC load line)
  • Programmable soft-start time from 0.5ms to 16ms
  • Programmable soft-stop time from 0.5ms to 4ms
  • Programmable output voltage slew rate: 0.625mV/µs to 25mV/µs
  • Programmable VIN UVLO, VOUT OVF/UVF, and OTF
  • Safe start-up into prebiased outputs
  • Precision voltage reference and differential remote sense for high output accuracy
    • ±0.5% tolerance from 0°C to 85°C junction
    • ±1% tolerance from –40°C to 125°C junction
  • Analog output current output pin (IMON)
  • D-CAP+™ control topology with fast transient response
  • Open-drain power-good output (VRRDY)
  • PMBus 1.5 interface with NVM for configuration, telemetry (V/I/T), and fault reporting
  • Input voltage: 4V to 18V
  • Output voltage: 0.25V to 5.5V
  • Supports external 5V bias improving efficiency and enabling 2.7V minimum input voltage
  • Output current: 20A continuous and 35A peak
  • Cycle-by-cycle valley IOUT OCF limit programmable up to 35A
  • Input power monitoring (PIN sense)
  • Programmable DCM or FCCM operation
  • Switching frequency: 400kHz to 2MHz
  • Programmable internal loop compensation including droop (DC load line)
  • Programmable soft-start time from 0.5ms to 16ms
  • Programmable soft-stop time from 0.5ms to 4ms
  • Programmable output voltage slew rate: 0.625mV/µs to 25mV/µs
  • Programmable VIN UVLO, VOUT OVF/UVF, and OTF
  • Safe start-up into prebiased outputs
  • Precision voltage reference and differential remote sense for high output accuracy
    • ±0.5% tolerance from 0°C to 85°C junction
    • ±1% tolerance from –40°C to 125°C junction
  • Analog output current output pin (IMON)
  • D-CAP+™ control topology with fast transient response
  • Open-drain power-good output (VRRDY)

The TPS544B27W device is a highly-integrated buck converter with D-CAP+ control topology for fast transient response. All programmable parameters can be configured by the PMBus interface and stored in non-volatile memory (NVM) as the new default values to minimize the external component count. These features make the device well-designed for space-constrained applications.

Fault management and status reports for the overcurrent fault (OCF), VOUT overvoltage fault (OVF), undervoltage fault (UVF), and overtemperature fault are provided on the device. The TPS544B27W device provides a full set of telemetry, including output voltage, output current, and device temperature. Additionally, input power monitoring through an external sensing resistor is provided for board-level power management.

TPS544B27W is a lead-free device and is RoHS compliant without exemption.

The TPS544B27W device is a highly-integrated buck converter with D-CAP+ control topology for fast transient response. All programmable parameters can be configured by the PMBus interface and stored in non-volatile memory (NVM) as the new default values to minimize the external component count. These features make the device well-designed for space-constrained applications.

Fault management and status reports for the overcurrent fault (OCF), VOUT overvoltage fault (OVF), undervoltage fault (UVF), and overtemperature fault are provided on the device. The TPS544B27W device provides a full set of telemetry, including output voltage, output current, and device temperature. Additionally, input power monitoring through an external sensing resistor is provided for board-level power management.

TPS544B27W is a lead-free device and is RoHS compliant without exemption.

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* Data sheet TPS544B27W 4V to 18V Input, 20A Buck Converter With PMBus® and Telemetry datasheet PDF | HTML 10 Dec 2025

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WQFN-FCRLF (VBD) 33 Ultra Librarian
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