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TI introduces the industry's smallest gate driver and power MOSFET solution for motor control

Designers can double the power density in space-constrained motor drives

Texas Instruments Logo. (PRNewsFoto/Texas Instruments Incorporated)

News provided by

Texas Instruments Incorporated

May 23, 2017, 07:00 ET

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DALLAS, May 23, 2017 /PRNewswire/ -- Texas Instruments (TI) (NASDAQ:TXN) today introduced two new device families that help reduce size and weight in motor drive applications. When used together, DRV832x brushless DC (BLDC) gate drivers and CSD88584/99 NexFET™ Power Blocks require as little as 511 mm2, half the board space of competing solutions.

TI introduces the industry’s smallest gate driver and power MOSFET solution for motor control

The DRV832x BLDC gate drivers feature a smart gate-drive architecture that eliminates up to 24 components traditionally used to set the gate drive current while enabling designers to easily adjust field-effect transistor (FET) switching to optimize power loss and electromagnetic compliance. The CSD88584Q5DC and CSD88599Q5DC power blocks leverage two FETs in a unique stacked-die configuration, which doubles power density and minimizes the FET resistance and parasitic inductances typically found in side-by-side FET configurations.

An 18-volt compact BLDC motor reference design demonstrates how the DRV8323 gate driver and CSD88584Q5DC power block can drive 11 W/cm3 power and enable engineers to jump-start their designs for smaller, lighter-weight power tools, integrated motor modules, drones and more. For more information, visit www.ti.com/smallmotordesign-pr.

Benefits of using a CSD88584/99 and DRV832x device together

  • Maximum power density: The combined solution delivers 700 W of motor power without a heat sink, providing 50 percent higher current than conventional solutions without increasing the footprint.
  • High peak current: As demonstrated by the 18-volt BLDC reference design, the smart gate driver and power block are capable of driving a peak current of up to 160 A for more than 1 second.
  • Optimal system protection: The combination enables shorter trace lengths and actively prevents unintended FET turn-on, while also providing undervoltage, overcurrent and thermal protection.
  • Superior thermal performance: The CSD88584Q5DC and CSD88599Q5DC power blocks come in TI's DualCool™ thermally enhanced package, which enables designers to apply a heat sink to the top of the device to decrease thermal impedance and increase the amount of power dissipated to maintain safe operating temperatures for the board and end application.
  • Clean switching: The power blocks' switch-node clip helps eliminate parasitic inductance between high- and low-side FETs. Additionally, the DRV832x gate driver's passive component integration minimizes board traces.

Tools and support to jump-start design

In addition to the 18-volt BLDC motor reference design, engineers can search for other motor reference designs that use the power blocks and gate drivers to help solve their system design challenges. The three-phase smart gate-driver evaluation module (EVM) allows designers to drive a 15-A, three-phase BLDC motor using the DRV8323R gate driver, CSD88599Q5DC power block and MSP430F5529 microcontroller LaunchPad™ development kit. The EVM is available from the TI store for US$99.00.

Package, availability and pricing

The new DRV832x BLDC smart gate drivers offer peripheral and interface options for engineers to select the best device for their design: with or without an integrated buck regulator or three integrated current-shunt amplifiers. Each device option is available in a hardware or serial interface and comes in quad flat no-lead (QFN) packaging. The CSD88584/99 power blocks come in DualCool small outline no-lead (SON) packaging, with 40- or 60-V breakdown voltage (BVDSS) choices. All devices are available now, priced and packaged as listed in the table below.

Product

Price

U.S. dollars for
1,000-unit
quantities

Package size

Key features

DRV8320

$1.41

5-mm-by-5-mm

Smart gate drive

DRV8320R

$2.01

6-mm-by-6-mm

Integrated buck regulator

DRV8323

$1.60

6-mm-by-6-mm

Integrated current-shunt amplifiers

DRV8323R

$2.19

7-mm-by-7-mm

Integrated buck regulator and current-shunt
amplifiers

CSD88584Q5DC

$2.24

5-mm-by-6-mm

40-V BVDSS, 0.68-mΩ typical on-resistance

CSD88599Q5DC

$2.50

5-mm-by-6-mm

60-V BVDSS, 1.7-mΩ typical on-resistance

Explore TI products and resources for designing motor drives

  • Read a blog post about how to reduce your PCB footprint when driving motors.
  • Explore TI's brushless DC gate driver portfolio.
  • Find the right power MOSFET or power block for your design needs.
  • Learn more about smart gate-drive architecture.
  • Search for answers and get help with your design in the TI E2E™ Community Motor Drivers forum.

About Texas Instruments

Texas Instruments Incorporated (TI) is a global semiconductor design and manufacturing company that develops analog integrated circuits (ICs) and embedded processors. By employing the world's brightest minds, TI creates innovations that shape the future of technology. TI is helping more than 100,000 customers transform the future, today. Learn more at www.ti.com.

Trademarks

DualCool, LaunchPad, NexFET, and TI E2E are trademarks of Texas Instruments. All registered trademarks and other trademarks belong to their respective owners.

SOURCE Texas Instruments Incorporated

Related Links

http://www.ti.com

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