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TPS40041

ACTIVE

2.25 to 5.5 V input, 600 kHz, synchronous buck controller with low pin count

Product details

Vin (min) (V) 2.25 Vin (max) (V) 5.5 Vout (min) (V) 0.6 Vout (max) (V) 4.95 Iout (max) (A) 6 Iq (typ) (mA) 2 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 700 Features Pre-Bias Start-Up Operating temperature range (°C) -40 to 85 Number of phases 1 Rating Catalog Control mode Voltage mode Type Controller
Vin (min) (V) 2.25 Vin (max) (V) 5.5 Vout (min) (V) 0.6 Vout (max) (V) 4.95 Iout (max) (A) 6 Iq (typ) (mA) 2 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 700 Features Pre-Bias Start-Up Operating temperature range (°C) -40 to 85 Number of phases 1 Rating Catalog Control mode Voltage mode Type Controller
VSON (DRB) 8 9 mm² 3 x 3
  • 2.25-V to 5.5-V Input
  • Output Voltage from 0.6 V to 90% of VIN
  • High-Side Drive for N-Channel FET
  • Supports Pre-Biased Outputs
  • Adaptive Anti-Cross Conduction Gate Drive
  • 1%, 0.6-V Reference
  • Two Fixed Switching Frequency Versions, TPS40040 (300 kHz) and TPS40041 (600 kHz)
  • Three Selectable Short Circuit Protection Levels of 105 mV, 180 mV and 310 mV
  • Hiccup Restart from Faults
  • Voltage Mode Control
  • Active Low Enable
  • Thermal Shutdown Protection at 145°C
  • 8-Pin, 3-mm × 3-mm SON with Ground Connection to Thermal Pad
  • APPLICATIONS
    • Point of Load
    • Telecommunications
    • DC to DC Modules
    • Set Top Boxes

PowerPAD Is a trademark of Texas Instruments.
Predictive Gate Drive Is a trademark of Texas Instruments.

  • 2.25-V to 5.5-V Input
  • Output Voltage from 0.6 V to 90% of VIN
  • High-Side Drive for N-Channel FET
  • Supports Pre-Biased Outputs
  • Adaptive Anti-Cross Conduction Gate Drive
  • 1%, 0.6-V Reference
  • Two Fixed Switching Frequency Versions, TPS40040 (300 kHz) and TPS40041 (600 kHz)
  • Three Selectable Short Circuit Protection Levels of 105 mV, 180 mV and 310 mV
  • Hiccup Restart from Faults
  • Voltage Mode Control
  • Active Low Enable
  • Thermal Shutdown Protection at 145°C
  • 8-Pin, 3-mm × 3-mm SON with Ground Connection to Thermal Pad
  • APPLICATIONS
    • Point of Load
    • Telecommunications
    • DC to DC Modules
    • Set Top Boxes

PowerPAD Is a trademark of Texas Instruments.
Predictive Gate Drive Is a trademark of Texas Instruments.

The TPS40040 and TPS40041 dc-to-dc controllers are designed to operate from a 2.25-V to 5.5-V input source. To reduce the number of external components, several operating parameters are fixed internally; namely, frequency, soft start time, and short circuit protection (SCP) levels. For example, the operating frequencies of TPS40040/1 are 300 kHz/600 kHz, respectively.

One of three short circuit threshold levels may be selected by the addition of an external resistor from the COMP pin to circuit ground. During power on, and before the internal soft start commands the output voltage to rise, the TPS40040/1 enters a calibration cycle, measures the current out of the COMP pin, and selects an internal SCP threshold voltage. At the end of the 1.6-ms calibration time, the output voltage is allowed to rise for a 4-ms soft start. During operation, the selected SCP threshold voltage is compared to the upper MOSFET’s voltage drop during its ON time to determine whether there is an overload condition.

The packaging of the TPS40040/1 is unique in that the PowerPAD™ is used as an electrical ground connection as well as a thermal connection.

The TPS40040 and TPS40041 dc-to-dc controllers are designed to operate from a 2.25-V to 5.5-V input source. To reduce the number of external components, several operating parameters are fixed internally; namely, frequency, soft start time, and short circuit protection (SCP) levels. For example, the operating frequencies of TPS40040/1 are 300 kHz/600 kHz, respectively.

One of three short circuit threshold levels may be selected by the addition of an external resistor from the COMP pin to circuit ground. During power on, and before the internal soft start commands the output voltage to rise, the TPS40040/1 enters a calibration cycle, measures the current out of the COMP pin, and selects an internal SCP threshold voltage. At the end of the 1.6-ms calibration time, the output voltage is allowed to rise for a 4-ms soft start. During operation, the selected SCP threshold voltage is compared to the upper MOSFET’s voltage drop during its ON time to determine whether there is an overload condition.

The packaging of the TPS40040/1 is unique in that the PowerPAD™ is used as an electrical ground connection as well as a thermal connection.

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Technical documentation

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Type Title Date
* Data sheet Low Pin Count, Low VIN (2.5V to 5.5V Synchronous Buck DC-to-DC Controller datasheet (Rev. D) 12 Dec 2007
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Selection guide DC/DC Buck Controller Solutions Selection Guide 06 Feb 2018
Technical article Power Tips: Simple PSRR measurement with a frequency analyzer PDF | HTML 25 May 2016
Application note Power for V5’s Transceiver using DC/DC Controllers using External FETs 04 Sep 2007
User guide A 5-V Input, 1.8-V Output, 6-A Synchronous Buck Converter 10 Apr 2006

Design & development

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

Evaluation board

TPS40040EVM-001 — 5V Input, 1.8V Output, 10A Synchronous Buck Evaluation Module

The TPS40040EVM-001 evaluation module (EVM) is a synchronous buck converter providing a fixed1.8 V output at up to 10 A from a 5 V input bus. The EVM is designed to start up from a single supply, so no additional bias voltage is required for startup. The module uses the TPS40040 (...)

User guide: PDF
Not available on TI.com
Evaluation board

TPS40041EVM-001 — TPS40041 5V Input, 1.8V Output, 6A Evaluation Module

The TPS40041EVM-001 evaluation module (EVM) is a synchronous buck converter providing a fixed1.8 V output at up to 6 A from a 5 V input bus or 3 A from a 3.3 V input. The EVM is designed to start up from a single supply, so no additional bias voltage is required for (...)

User guide: PDF
Not available on TI.com
Simulation model

TPS40040/1 Unencrypted PSpice Average Model Package (Rev. A)

SLVJ008A.ZIP (108 KB) - PSpice Model
Simulation model

TPS40041 PSpice Transient Model

SLVM033.ZIP (61 KB) - PSpice Model
Simulation model

TPS40041 TINA-TI Average Reference Design

SLVM027.TSC (566 KB) - TINA-TI Reference Design
Simulation model

TPS40041 TINA-TI Average Spice Model

SLVM073.TSM (6 KB) - TINA-TI Spice Model
Simulation model

TPS40041 TINA-TI Transient Reference Design

SLVM030.TSC (758 KB) - TINA-TI Reference Design
Simulation model

TPS40041 TINA-TI Transient Spice Model

SLVM031.TSM (27 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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VSON (DRB) 8 View options

Ordering & quality

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Information included:
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