Product details

Vin (Min) (V) 4.5 Vin (Max) (V) 18 Vout (Min) (V) 0.35 Vout (Max) (V) 5.5 Iout (Max) (A) 35 Iq (Typ) (uA) 7700 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Frequency Synchronization, I2C/PMBus, Phase Interleaving, Power Good, Synchronous Rectification, UVLO Adjustable, Voltage Margining, Differential Remote Sense, Enable, Adaptive/Dynamic Voltage Scaling, Forced PWM, Over Current Protection, Pre-Bias Start-Up, Soft Start Adjustable Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1
Vin (Min) (V) 4.5 Vin (Max) (V) 18 Vout (Min) (V) 0.35 Vout (Max) (V) 5.5 Iout (Max) (A) 35 Iq (Typ) (uA) 7700 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Frequency Synchronization, I2C/PMBus, Phase Interleaving, Power Good, Synchronous Rectification, UVLO Adjustable, Voltage Margining, Differential Remote Sense, Enable, Adaptive/Dynamic Voltage Scaling, Forced PWM, Over Current Protection, Pre-Bias Start-Up, Soft Start Adjustable Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1
LQFN-CLIP (RVF) 40 35 mm² 7 x 5
  • PMBus™ 1.3 Compliant Converters: 35 A
  • 2-Device Stackable for up to 70 A With Current Sharing
  • Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.35 V to 5.5 V
  • Integrated 3.2-mΩ and 1.4-mΩ Stacked NexFET™ Power Stage
  • 350-mV to 1650-mV Reference for Adaptive Voltage Scaling (AVS) Function and Margining through PMBus
  • 0.5% Reference Accuracy at 600 mV and Above
  • Lossless Low-Side MOSFET Current Sensing
  • Voltage Mode Control With Input Feed-Forward
  • Differential Remote Sensing
  • Monotonic Start-Up into Pre-Biased Output
  • Output Voltage and Output Current Reporting
  • Internal Die Temperature Monitoring
  • 2 PMBus Addresses (Master 36d/Slave 37d)
  • Selectable Boot-up Vout and Soft Start Values via Pin-Strapping
  • Programmable via the PMBus Interface:
    • OCP, UVLO, Soft-Start, PG, OV, UV, OT Levels, Fault Responses
    • Turnon and Turnoff Delays
  • Thermal Shutdown
  • Pin Strapping for Switching Frequency: 200 kHz to 1 MHz
  • Frequency Synchronization to an External Clock or Output Clock to Sync Out
  • Create a Custom Design Using the TPS546C20A With the WEBENCH® Power Designer
  • PMBus™ 1.3 Compliant Converters: 35 A
  • 2-Device Stackable for up to 70 A With Current Sharing
  • Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.35 V to 5.5 V
  • Integrated 3.2-mΩ and 1.4-mΩ Stacked NexFET™ Power Stage
  • 350-mV to 1650-mV Reference for Adaptive Voltage Scaling (AVS) Function and Margining through PMBus
  • 0.5% Reference Accuracy at 600 mV and Above
  • Lossless Low-Side MOSFET Current Sensing
  • Voltage Mode Control With Input Feed-Forward
  • Differential Remote Sensing
  • Monotonic Start-Up into Pre-Biased Output
  • Output Voltage and Output Current Reporting
  • Internal Die Temperature Monitoring
  • 2 PMBus Addresses (Master 36d/Slave 37d)
  • Selectable Boot-up Vout and Soft Start Values via Pin-Strapping
  • Programmable via the PMBus Interface:
    • OCP, UVLO, Soft-Start, PG, OV, UV, OT Levels, Fault Responses
    • Turnon and Turnoff Delays
  • Thermal Shutdown
  • Pin Strapping for Switching Frequency: 200 kHz to 1 MHz
  • Frequency Synchronization to an External Clock or Output Clock to Sync Out
  • Create a Custom Design Using the TPS546C20A With the WEBENCH® Power Designer

The TPS546C20A devices are PMBus 1.3 Compliant, non-isolated DC/DC converters with integrated FETs, capable of high-frequency operation and 35-A current output from a 7-mm × 5-mm package. Two TPS546C20A devices can be paralleled together to provide up to 70-A load. Current sensing is realized by sampling a small portion of the power stage current and independent on the device temperature. High-frequency, low-loss switching, provided by an integrated NexFET power stage and optimized drivers, allows for very high-density power solutions. The PMBus interface enables the AVS functions through VOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring including output voltage, current, and internal die temperature. Response to fault conditions can be set to either restart, latch-off or ignore depending on system requirements.

The TPS546C20A devices are PMBus 1.3 Compliant, non-isolated DC/DC converters with integrated FETs, capable of high-frequency operation and 35-A current output from a 7-mm × 5-mm package. Two TPS546C20A devices can be paralleled together to provide up to 70-A load. Current sensing is realized by sampling a small portion of the power stage current and independent on the device temperature. High-frequency, low-loss switching, provided by an integrated NexFET power stage and optimized drivers, allows for very high-density power solutions. The PMBus interface enables the AVS functions through VOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring including output voltage, current, and internal die temperature. Response to fault conditions can be set to either restart, latch-off or ignore depending on system requirements.

Download

Similar products you might be interested in

Same functionality with different pin-out to the compared device.
TPSM846C23 ACTIVE 4.5V to 15V Input, 0.35V to 2.0V Output, 35A PMBus Power Module This product is a 35-A PMBus power module with integrated inductor to simplify design.

Design & development

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

Evaluation board

TPS546C20AEVM1-746 — TPS546C20A 35A PMBus Stackable Synchronous Buck Converter Evaluation Module

The TPS546C20AEVM1-PWR746 evaluation module (EVM) uses the TPS546C20A. The TPS546C20A is a voltage mode, 35A synchronous buck converter with integrated MOSFETs. Two seperated converters are included on the EVM, both providing a 0.9V output at up to 35A from a 12V input bus.
Not available on TI.com
Evaluation board

TPS546C20AEVM2-746 — TPS546C20A Two-Phase Evaluation Module With PMBUS

The TPS546C20AEVM2-PWR746 evaluation module (EVM) uses two TPS546C20A devices. The TPS546C20A is a voltage mode, 35A synchronous buck converter with integrated MOSFETs. Two phase converters on the EVM provides a 0.9V output at up to 70A from a 12V input bus.
Not available on TI.com
Simulation model

TPS546C20 PSpice Transient Model

SLUM530.ZIP (265 KB) - PSpice Model
Simulation model

TPS546C20A SIMPLIS Transient Model

SLUM711.ZIP (1330 KB) - SIMPLIS Model
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 (...)
Reference designs

PMP20292 — High-Density 12Vin, 1.2Vout, 60A POL Reference Design with Stacked TPS546C20A PMBus DCDC Converters

The TPS546C20A provides a single IC for both control & the synchronous power stage for high current DC/DC applications and allows doubling of the current capability with use of two of the same part.  Multi-phase also allows output ripple cancellation and effective higher bandwidth control (...)
Reference designs

PMP20071 — Reference Design: 8.5V-13.2V to 1.2V 50A DC/DC Converter

The TPS546C20A provides a single IC for both control & the synchronous power stage for high current DC/DC applications and allows doubling of the current capability with use of two of the same part.  Multi-phase also allows output ripple cancellation and effective higher bandwidth control (...)
Package Pins Download
LQFN-CLIP (RVF) 40 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos