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TPS40193

ACTIVE

4.5-V to 18-V, 20-A, 300-kHz synchronous buck controller with power good

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TPS546B24A ACTIVE 2.95-V to 18-V, stackable 20-A synchronous SWIFT™ buck converter with pin-strapping and PMBus Upgraded PMBus with faster switching frequency and extended positive operating temperature range.

Product details

Vin (min) (V) 4.5 Vin (max) (V) 18 Vout (min) (V) 0.591 Vout (max) (V) 14.4 Iout (max) (A) 20 Iq (typ) (mA) 2.5 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 300 Features Enable, Power good, Pre-Bias Start-Up, Synchronous Rectification Operating temperature range (°C) -40 to 85 Regulated outputs (#) 1 Number of phases 1 Rating Catalog Control mode Voltage mode Type Controller
Vin (min) (V) 4.5 Vin (max) (V) 18 Vout (min) (V) 0.591 Vout (max) (V) 14.4 Iout (max) (A) 20 Iq (typ) (mA) 2.5 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 300 Features Enable, Power good, Pre-Bias Start-Up, Synchronous Rectification Operating temperature range (°C) -40 to 85 Regulated outputs (#) 1 Number of phases 1 Rating Catalog Control mode Voltage mode Type Controller
VSON (DRC) 10 9 mm² 3 x 3
  • Input Operating Voltage Range: 4.5 V to 18 V
  • Up to 20-A Output Currents
  • Supports Pre-Biased Outputs
  • 0.5%, 591-mV Reference
  • Switching Frequency
    • TPS40192: 600 kHz
    • TPS40193: 300 kHz
  • Three Selectable Thermally Compensated Short-Circuit Protection Levels
  • Hiccup Restart from Faults
  • Internal 5-V Regulator
  • High-Side and Low-Side MOSFET ON-resistance (RDS(on)) Current Sensing
  • 10-Pin 3 mm × 3 mm SON Package
  • Internal 4-ms Soft-Start Time
  • Thermal Shutdown Protection at 145°C
  • Input Operating Voltage Range: 4.5 V to 18 V
  • Up to 20-A Output Currents
  • Supports Pre-Biased Outputs
  • 0.5%, 591-mV Reference
  • Switching Frequency
    • TPS40192: 600 kHz
    • TPS40193: 300 kHz
  • Three Selectable Thermally Compensated Short-Circuit Protection Levels
  • Hiccup Restart from Faults
  • Internal 5-V Regulator
  • High-Side and Low-Side MOSFET ON-resistance (RDS(on)) Current Sensing
  • 10-Pin 3 mm × 3 mm SON Package
  • Internal 4-ms Soft-Start Time
  • Thermal Shutdown Protection at 145°C

TPS40192 and TPS40193 are cost-optimized synchronous buck controllers that operate from 4.5 V to 18 V input. These controllers implement a voltage-mode control architecture with the switching frequency fixed at either 600 kHz (TPS40192) or 300 kHz (TPS40193). The higher switching frequency facilitates the use of smaller inductor and output capacitors, thereby providing a compact power-supply solution. An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs.

Short circuit detection is done by sensing the voltage drop across the low-side MOSFET when it is on and comparing it with a user selected threshold of 100 mV, 200 mV or 280 mV. The threshold is set with a single external resistor connected from COMP to GND. This resistor is sensed at startup and the selected threshold is latched. Pulse-by-pulse limiting (to prevent current runaway) is provided by sensing the voltage across the high-side MOSFET when it is on and terminating the cycle when the voltage drop rises above a fixed threshold of 550 mV. When the controller senses an output short circuit, both MOSFETs are turned off and a timeout period is observed before attempting to restart. This behavior provides limited power dissipation in the event of a sustained fault.

TPS40192 and TPS40193 are cost-optimized synchronous buck controllers that operate from 4.5 V to 18 V input. These controllers implement a voltage-mode control architecture with the switching frequency fixed at either 600 kHz (TPS40192) or 300 kHz (TPS40193). The higher switching frequency facilitates the use of smaller inductor and output capacitors, thereby providing a compact power-supply solution. An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs.

Short circuit detection is done by sensing the voltage drop across the low-side MOSFET when it is on and comparing it with a user selected threshold of 100 mV, 200 mV or 280 mV. The threshold is set with a single external resistor connected from COMP to GND. This resistor is sensed at startup and the selected threshold is latched. Pulse-by-pulse limiting (to prevent current runaway) is provided by sensing the voltage across the high-side MOSFET when it is on and terminating the cycle when the voltage drop rises above a fixed threshold of 550 mV. When the controller senses an output short circuit, both MOSFETs are turned off and a timeout period is observed before attempting to restart. This behavior provides limited power dissipation in the event of a sustained fault.

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Technical documentation

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Type Title Date
* Data sheet TPS4019x 4.5-V to 18-V Input, Voltage-Mode, Synchronous Buck Controller With Power Good datasheet (Rev. H) PDF | HTML 23 May 2019
User guide TPS40193 Buck Controller Evaluation Module User's Guide (Rev. A) PDF | HTML 10 Jan 2022
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Selection guide DC/DC Buck Controller Solutions Selection Guide 06 Feb 2018
Application note Enabling Multiple TPS4019x Devices 29 Mar 2012

Design & development

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

Simulation model

TPS40193 PSpice Model

SLVC171.ZIP (79 KB) - PSpice Model
Simulation model

TPS40193 TINA-TI Average Reference Design (Rev. A)

SLVC172A.ZIP (12 KB) - TINA-TI Reference Design
Simulation model

TPS40193 TINA-TI Average Spice Model

SLVM013.ZIP (3 KB) - TINA-TI Spice Model
Simulation model

TPS40193 TINA-TI Transient Spice Model

SLVM075.ZIP (97 KB) - TINA-TI Spice Model
Calculation tool

SLUC263 Type III Compensation Calculation Tool

Supported products & hardware

Supported products & hardware

Products
Buck converters (integrated switch)
TPS53311 2.9V to 6V Input, 3A Synchronous Step-Down Converter with Eco-Mode and Smooth PWM TPS53313 4.5-V to 16-V, 6-A synchronous buck converter with optimized light load efficiency TPS53316 High-Efficiency, 5-A Step-Down Regulator with Integrated Switcher TPS56121 4.5-V to 14-V, 15-A synchronous SWIFT™ buck converter TPS56221 4.5-V to 14-V, 25-A synchronous SWIFT™ buck converter
Buck controllers (external switch)
TPS40007 2.25V-5.5V, 300 kHz, Synchronous Buck Controller, Source/ Sink, Prebias Operation TPS40009 2.25V-5.5V, 600 kHz, Synchronous Buck Controller, Source/ Sink, Prebias Operation TPS40021 Enhanced Low Input (2.25V-5.5V) up to 1MHz Frequency, Sync. Buck Controller, source/sink TPS40040 2.25 to 5.5 V input, 300 kHz, synchronous buck controller with low pin count TPS40041 2.25 to 5.5 V input, 600 kHz, synchronous buck controller with low pin count TPS40055 Wide Input (8V-40V) up to 1MHz Frequency Synchronous Buck Controller, source/sink TPS40057 Wide Input (8V-40V) up to 1MHz Frequency Synchronous Buck Controller, source/sink with prebias TPS40075 4.5-V to 28-V, synchronous buck controller with voltage feed forward TPS40077 4.5-V to 28-V, synchronous buck controller with voltage feed forward in HTSSOP package TPS40101 4.5-V to 18-V, synchronous buck controller with advanced sequencing and output margining TPS40170 4.5 V to 60 V Wide-Input Synchronous PWM Buck Controller TPS40190 4.5-V to 15-V, 20-A synchronous buck controller TPS40192 4.5-V to 18-V, 20-A, 600-kHz synchronous buck controller with power good TPS40193 4.5-V to 18-V, 20-A, 300-kHz synchronous buck controller with power good TPS40195 4.5-V to 20-V, 20-A, synchronous buck controller with power good and synchronization TPS40200 Wide Input Non-Synchronous Buck DC/DC Controller TPS40303 3-V to 20-V, 25-A, 300-kHz synchronous buck controller with FSS TPS40304 3-V to 20-V, 25-A, 600-kHz synchronous buck controller with FSS TPS40305 3-V to 20-V, 25-A, 1.2-MHz synchronous buck controller with FSS TPS40322 Dual Output or Two-phase Synchronous Buck Controller TPS40400 3-V to 20-V, 30-A, synchronous buck controller with PMBus™, including Telemetry TPS40422 Dual Output or Multiphase Synchronous Buck Controller with PMBus TPS5130 4.5-V to 28-V, triple synchronous buck controller with LDO controller
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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