Product details


VGS (V) 10 VDS (V) 25 Power loss (W) 2.8 Ploss current (A) 25 ID, continuous drain current at Ta=25degC (A) 40 Operating temperature range (C) -55 to 150 Features Power supply Duty cycle (Typ) (%) 10 open-in-new Find other Power blocks


  • Half-Bridge Power Block
  • 90% System Efficiency at 25 A
  • Up to 40-A Operation
  • High-Frequency Operation (up to 1.5 MHz)
  • High-Density SON 5-mm × 6-mm Footprint
  • Optimized for 5-V Gate Drive
  • Low-Switching Losses
  • Ultra-Low Inductance Package
  • RoHS Compliant
  • Halogen Free
  • Lead-Free Terminal Plating
    • Synchronous Buck Converters
      • High-Frequency Applications
      • High-Current, Low-Duty Cycle Applications
    • Multiphase Synchronous Buck Converters
    • POL DC-DC Converters
    • IMVP, VRM, and VRD Applications

All other trademarks are the property of their respective owners

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The CSD86350Q5D NexFET™ power block is an optimized design for synchronous buck applications offering high-current, high-efficiency, and high-frequency capability in a small 5-mm × 6-mm outline. Optimized for 5-V gate drive applications, this product offers a flexible solution capable of offering a high-density power supply when paired with any 5-V gate drive from an external controller/driver.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 9
Type Title Date
* Datasheet CSD86350Q5D Synchronous Buck NexFET™ Power Block datasheet (Rev. F) Oct. 05, 2016
Technical articles How to choose the right power MOSFET or power block package for your application Oct. 29, 2019
Technical articles Discrete FETs vs. power blocks - how to choose the right SOA for your design Jun. 06, 2019
Technical articles Understanding the benefits of “lead-free” power MOSFETs Feb. 07, 2019
Application note QFN and SON PCB Attachment (Rev. B) Aug. 24, 2018
Technical articles When to use load switches in place of discrete MOSFETs Feb. 03, 2016
Application note Ringing Reduction Techniques for NexFET High Performance MOSFETs Nov. 16, 2011
More literature Advancing Silicon Performance Beyond the Capabilities of Discrete Power MOSFETs Oct. 28, 2010
User guide CSD86350Q5DEVM-604 User's Guide (Rev. A) Sep. 08, 2010

Design & development

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

Hardware development

The CSD86350Q5DEVM-604 evaluation module (EVM) is a synchronous buck converter featuring TI's NexFET™ Power Block technology to provide a high current, ultra-high density power supply solution. The EVM provides a 1.2V output at 25A from a 12V nominal input bus at over 92% efficiency. The EVM is (...)
  • 8V to 13V input voltage rating
  • 1.2V output voltage
  • 25A steady state load current
  • 290 kHz switching frequency
  • Simple access to IC features including enable, power good, and switching node
  • Convenient test points for simple, non-invasive measurements of converter performance including input ripple, output (...)

The TPS53219EVM-690 evaluation module (EVM) uses the TPS53219. The TPS53219 is a small-size, single buck controller with adaptive on-time D-CAP™ mode control. It provides a fixed 1.1-V output at up to 25 A from a 12-V input bus. TPS53219EVM-690 also uses the 5-mm x 6-mm TI power block MOSFET (...)

  • 25-Adc, steady-state output current
  • Support prebias output voltage start-up
  • High efficiency and high power density by using TI power block MOSFET
  • J1 for selectable switching frequency setting
  • J2 for selectable internal voltage servo soft-start
  • J3 for enable function
  • J6 for auto-skip and forced CCM (...)

Design tools & simulation

SLLM123A.ZIP (8 KB) - PSpice Model
Buck Converter NexFET™ Selection Tool
FETPWRCALC — This tool is designed to assist engineers in the selection of Texas Instruments’ discrete power MOSFET and Power Block devices for their synchronous buck design. Users can input the conditions for their power supply and compare various discrete and power block solutions by power loss, relative (...)
  • Vary power supply conditions and observe TI’s most efficient solutions for any set of input parameters
  • Select from a pre-established list of TI controllers or enter your own custom IC
  • Rank solutions by effective power loss and compare by relative 1k price, device package, and total PCB footprint
  • (...)
SPLR001.ZIP (824 KB)

Reference designs

Power Solution for Xilinx 7-Series MGT with 5V input voltage (1.8V @ 2.6A)
PMP6577 — PMP6577 is a complete power solution for the Xilinx 7-series GTX / GTH transceivers when mated to Xilinx MGT characterization boards. The AVCC at 1V up to 12A, AVTT at 1.2V up to 8A and AVCCAUX 1.8V at up to 2.6A (powered off 5V) are provided. For each output a TPS40400 controller with a dual NexFET (...)
Synchronous Step-Down Regulator with PMBus Delivering 0.9V-3.3V at 20A Reference Design
PMP6997 — PMP6997 is a single-phase synchronous switching regulator with PMBus accepting an input voltage range of 4.5Vin to 14Vin and providing an output voltage of 1.2Vout capable of supplying 20A of current. This design uses the TPS40400 synchronous buck controller with PMBus and two CSD86350Q5D power (...)
5V input; 6 Phase High Efficiency Synchronous Buck; 0.9V 120A output
PMP6845 — The PMP6845 reference design uses three TPS40140's to control 6 Synchronous Buck Phases. Main switch pair for each phase is the dual CSD86350Q5D. The optional added CSD16325Q5 for the low side enhances efficiency, especially at full load. Efficiency is 87.5% at full load and over 90% for loads from (...)
Design files

CAD/CAE symbols

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Ordering & quality

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

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