Texas Instruments DRV8143SQRXYRQ1 — DC-DC Power Modules
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DRV8143SQRXYRQ1 Automotive Half-Bridge Driver, 20A, 4.5-35V

MPN DRV8143SQRXYRQ1
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Texas Instruments DRV8143SQRXYRQ1, Automotive Grade, Fully Integrated Half-Bridge Driver, 4.5V to 35V supply/load, 20A output, PWM and SPI interface, Bi-CMOS, Surface Mount Wettable Flank, 14-VFQFN, -40°C to 125°C.

In Stock: 3,000 pcs
MOQ: 1 pcs
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$5.63
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[SPEC] Essential Parameters Snapshot Full Specifications (14)
Package / Case 14-VFQFN
Supply Voltage 4.5V ~ 35V

Full Technical Specifications

14 Parameters
DRV8143SQRXYRQ1 specifications
Parameter / AttributeSpecification / Value
MountingSurface Mount, Wettable Flank
Motor type - AC, DCBrushed DC
Motor type - stepperBipolar
Voltage - load4.5V ~ 35V
Supply voltage4.5V ~ 35V
Output current20A
InterfacePWM, SPI
Operating temperature-40°C ~ 125°C (TA)
GradeAutomotive
PackageTape & Reel (TR); Cut Tape (CT)
FunctionDriver - Fully Integrated, Control and Power Stage
TechnologyBi-CMOS
Case14-VFQFN
Output configurationHalf Bridge
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Technical Details & Description

The 20A rating is the peak capability for the half-bridge output stage. For a brushed DC motor, that translates to stall-current handling on a 12V or 24V rail without immediate thermal shutdown.

Automotive temperature range and grade

The Automotive grade means the part has passed extended reliability stress tests.

PWM and SPI — what the interface choices buy you

PWM input is the straightforward way to control motor speed or position from an ECU or MCU timer output. The SPI port adds configurability: you can set the current-regulation level, adjust the dead time, read back fault flags (overcurrent, overtemperature, undervoltage), and change the drive mode without changing the hardware. That SPI diagnostic channel is what separates this driver from a plain PWM-input FET driver — it lets the system controller log faults and decide whether to retry or shut down, which matters for functional-safety architectures.

Package and mounting — wettable flank matters

The 14-VFQFN package with wettable flank terminals is a surface-mount part designed for automated optical inspection (AOI). The wettable flank means the solder fillet climbs the side of the terminal, so a vision system can verify the joint — no X-ray required. That is a production-line advantage for automotive tier-1s that need process control on every board.

Frequently asked questions

What is the closest functional equivalent to DRV8143SQRXYRQ1?

The DRV8811PWPR is a half-bridge driver from TI, but it is a different tier: it drives up to 1.9A on a 8V load and uses a logic-level interface, not SPI. The DRV8143SQRXYRQ1 handles 20A at 35V with SPI diagnostics — they are not drop-in replacements. For a 20A automotive application, the DRV8143SQRXYRQ1 is the correct part.

What is the automotive grade of DRV8143SQRXYRQ1?

The part is listed as Automotive grade, which means it is qualified for automotive applications per AEC-Q100 (by inference from TI's automotive product line). The operating temperature range is -40°C to 125°C.

What package does DRV8143SQRXYRQ1 come in?

It is supplied in Tape & Reel (TR) or Cut Tape (CT) format. The device package is a 14-VFQFN with wettable flank terminals, measuring 3x4.5mm (14-VQFN-HR).

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