DRV8243SQRHLRQ1 - 40V, 12A Automotive H-Bridge Driver | TI
MPN: DRV8243SQRHLRQ1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.2 | $8.20 |
| 10 | $7.45 | $74.50 |
| 100 | $6.55 | $655.00 |
| 500 | $5.9 | $2,950.00 |
| 1,000 | $5.35 | $5,350.00 |
DRV8243SQRHLRQ1 Overview
An H-bridge driver is a power management IC that controls the direction, speed, and braking of DC motors and other inductive loads by switching four bridge arms in controlled combinations. Within the power electronics hierarchy, the DRV8243-Q1 belongs to the integrated motor driver family: a monolithic device combining gate drive, power stage, current sensing, diagnostics, and protection in a single package, eliminating the need for discrete MOSFETs and gate drivers.
Key features include a 40 V absolute maximum supply rating supporting 12-V automotive battery systems with load-dump headroom, up to 12 A of current capability from an integrated N-channel H-bridge on a BiCMOS high-power process, and high-side current sensing with regulation plus a current-proportional analog feedback output. The SPI (SQ) control interface allows configuration of off-state diagnostics, current regulation thresholds, slew-rate control, and detailed fault reporting, enabling predictive maintenance and functional-safety architectures.
The DRV824x-Q1 family is fabricated on a monolithic BiCMOS high-power process that delivers excellent power handling and thermal performance. The family shares an identical pin function across members with scalable RON, so designers can trade current capability against cost without a PCB respin. A low-power sleep mode minimizes quiescent battery drain, and an integrated charge pump guarantees full enhancement of the high-side N-channel FETs across the supply range.
Typical applications include automotive body and comfort functions such as power liftgates, power seats, window lifters, sunroof and pump actuators, as well as industrial 12-V brushed-DC motor drives requiring rich diagnostics. The integrated current-sense amplifier with proportional output removes the external sense resistor in many designs, saving board area and improving efficiency.
Design consideration: because the bridge power FETs are integrated, thermal design centers on PCB copper area under the power pad; estimate conduction losses as I^2 x RON per arm and verify junction temperature against the AEC-Q100 Grade 1 ambient range.
This page synthesizes distributor pricing, drop-in family alternatives, comparison tables, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DRV8243SQRHLRQ1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with DRV8243SQRHLRQ1 (same form factor and footprint) β differing in Control Interface, Package, Sleep Mode.
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β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
DRV8243SQRHLRQ1 Maximum Ratings & Electrical Characteristics
| Supply Voltage (Absolute Maximum) | 40 V |
| Motor Drive Type | Integrated N-channel H-bridge (or dual half-bridge) |
| Peak Output Current | 12 A |
| Control Interface | SPI (SQ variant) |
| Current Sensing | Integrated high-side current sense with regulation and proportional output |
| Process Technology | Monolithic BiCMOS high-power |
| Charge Pump | Integrated charge pump regulator for high-side N-FETs |
| Sleep Mode | Yes (low-power sleep, low quiescent current) |
| Configuration | Single full-bridge or two independent half-bridges |
| Protection | Integrated protection circuitry (UVLO, OCP, TSD, off-state diagnostics) |
| Automotive Qualification | AEC-Q100 qualified (Q1) |
| Package | VQFN-HR (RHL) power package |
| Mounting Type | Surface Mount |
| Family Scalability | Identical pin function across DRV824x-Q1 family with scalable RON |
| Application Domain | Automotive body electronics, DC motor control |
DRV8243SQRHLRQ1 vqfn-hr (rhl) power package Pin Configuration Guide
Pin configuration for DRV8243SQRHLRQ1 (vqfn-hr (rhl) power package package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for DRV8243SQRHLRQ1.
Refer to the datasheet for full pin configuration.
Typical Applications
DRV8243SQRHLRQ1 is suitable for 6 applications: Automotive Power Liftgate Drive, Power Seat and Window Lifter Motors, Automotive Pump and Solenoid Drivers, Industrial 12-V Brushed-DC Motor Control, Sunroof and Power-Fold Mirror Actuators, Scalable Motor Driver Platform Design.
Automotive Power Liftgate Drive
Power liftgate actuators draw high inrush and sustained stall currents when a vehicle is parked on a slope or the latch binds, making the DRV8243SQRHLRQ1 a strong fit with its 12 A capability and 40 V rating that absorbs automotive load-dump transients. The SPI interface lets the body controller configure the current-regulation threshold so soft-start inrush is limited without external components, while the integrated high-side current-sense proportional output feeds the ECU ADC for jam and obstruction detection required by safety regulations. Because the bridge FETs are integrated, the design drops the external MOSFETs, gate drivers, and sense resistor of a discrete solution, cutting board area. Place the VQFN-HR power pad over a minimum 2x2 cm copper pour with thermal vias, and verify stall-case junction temperature against the AEC-Q100 rating using I^2 x RON estimates.
Recommended
Power Seat and Window Lifter Motors
Seat adjusters and window lifters are brushed-DC motors on the 12-V automotive rail with stall currents in the ampere range, well within the DRV8243SQRHLRQ1 12 A envelope. The low-power sleep mode keeps quiescent battery drain negligible when the vehicle is parked - a hard requirement for always-connected body electronics. The SPI fault registers report open-load, short-circuit, and thermal events to the door-zone module, enabling anti-pinch and diagnostics software to act on real current data from the integrated sense amplifier rather than an approximate external shunt. The identical pin function across the DRV824x-Q1 family lets one door-module PCB serve premium (high-current) and base (DRV8242SQRHLRQ1) trim levels by swapping one component. Design the PWM frequency within the device slew-rate control options to balance acoustic noise and switching loss.
Recommended
Automotive Pump and Solenoid Drivers
In half-bridge configuration, the DRV8243SQRHLRQ1 drives unidirectional loads such as washer pumps, fuel pumps, HVAC water valves, and solenoids on the 12-V rail. The 40 V rating clamps inductive flyback safely while the integrated current regulation limits solenoid holding current, reducing coil heating and system power draw. The current-proportional output gives the ECU continuous load monitoring so a blocked pump or shorted coil is detected through software thresholds instead of additional discrete circuitry. Two independent half-bridges in one RHL package serve dual pumps or a pump plus heater from a single component, cutting BOM count. For fast-decay solenoid applications, configure off-state diagnostics through SPI to detect open loads before actuation. Verify the repetitive avalanche and regulation behavior against your load inductance per the TI datasheet design procedure.
Recommended
Industrial 12-V Brushed-DC Motor Control
Beyond automotive, the 40 V / 12 A integrated bridge suits industrial 12-V or 24-V-derated brushed-DC drives such as actuators, dosing pumps, and small conveyors. Compared with a discrete MOSFET bridge, the DRV8243SQRHLRQ1 removes gate-drive design, shoot-through protection, and current-sense circuit calibration from the project scope; the monolithic BiCMOS power stage guarantees matched FET characteristics and integrated cross-conduction protection. The SPI diagnostics support predictive maintenance: logging current signatures over time reveals bearing wear or mechanical loading before failure. Sleep mode lowers standby consumption in battery-backed industrial equipment. When designing, size the PCB copper for continuous rather than peak current, since the 12 A rating assumes adequate thermal spreading under the power pad per the datasheet thermal application section.
Recommended
Sunroof and Power-Fold Mirror Actuators
Sunroof drives and power-fold mirror mechanisms are compact brushed-DC actuators with anti-pinch safety requirements. The DRV8243SQRHLRQ1 meets them with integrated current sensing: the proportional current output lets the controller detect the characteristic current spike of an obstruction and reverse the motor within milliseconds, all without a external shunt resistor. The 40 V rating handles cable-harness transients and the sleep mode respects key-off battery drain budgets in door modules. Slew-rate control through SPI reduces audible clicking at PWM edges - a perceived-quality factor in premium vehicles. The VQFN-HR RHL power package fits the dense door-zone PCB layouts typical of mirror modules. Use the off-state diagnostics at key-on to report a jammed mechanism to the driver information system before actuation is attempted.
Recommended
Scalable Motor Driver Platform Design
Tier-1 suppliers often need one PCB platform across vehicle programs with different load ratings. Because the DRV824x-Q1 family provides identical pin function with scalable RON, a layout built around the DRV8243SQRHLRQ1 accepts the DRV8242SQRHLRQ1 (lighter loads) as a populating alternative with no respin, and interface variants (SPI, partial, hardwired) map to different ECU software architectures on the same footprint. This page's comparison table quantifies the swap. Design-in recommendations: keep the SPI routing length short and daisy-chainable, reserve an ADC channel for the current-proportional output even on hardwired variants, and validate both current-tier variants at the maximum stall current of the heaviest program. This platform approach reduces qualification effort since all members are AEC-Q100 qualified from the same monolithic BiCMOS process.
Recommended
Recommended Products Summary
Engineering reference data for DRV8243SQRHLRQ1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DRV8242SQRHLRQ1 | DRV8243HQRHLRQ1 | DRV8243SQDGQRQ1 |
|---|---|---|---|---|
| Package | VQFN-HR (RHL) | VQFN-HR (RHL) - same | VQFN-HR (RHL) - same | HTSSOP-28 (DGQ) - different footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Supply Voltage Rating | 40 V | 40 V | 40 V | 40 V |
| Output Current Class | 12 A | Lower current class (DRV824x scalable RON) | 12 A | 12 A |
| Control Interface | SPI | SPI | Hardwired (HW) pins | SPI |
| Integrated Current Sensing | Yes (high-side, proportional output) | Yes | Yes | Yes |
| Automotive Qualification | AEC-Q100 (Q1) | AEC-Q100 (Q1) | AEC-Q100 (Q1) | AEC-Q100 (Q1) |
| Configuration Modes | Full-bridge or dual half-bridge | Full-bridge or dual half-bridge | Full-bridge or dual half-bridge | Full-bridge or dual half-bridge |
| Pin Compatibility (RHL footprint) | Reference | Identical pin function | Identical pin function | Not pin compatible (DGQ package) |
Key Differentiators
- Highest current class in the RHL footprint (vs DRV8242SQRHLRQ1)
- Full SPI configuration and fault reporting (vs DRV8243HQRHLRQ1)
- Integrated current sensing eliminates shunt resistor (vs DRV8243SQDGQRQ1)
Design Notes
All load current flows through the integrated bridge FETs, so PCB copper is the heatsink. Estimated: at a 5 A continuous load with a total bridge RON in the tens of milliohms (per family RON tier), conduction loss is I^2 x RON_total; e.g., 25 x 0.030 = 0.75 W, which on a VQFN-HR power package with good copper spreading gives a manageable junction rise. Always confirm the exact RON from the TI datasheet electrical tables and validate worst-case stall current thermally, not just continuous load.
Connect the VQFN-HR exposed power pad to the ground plane with an array of thermal vias (0.3 mm drill, filled or tented per TI layout guidance) directly under the package. Keep the motor supply bulk capacitor (low-ESR, sized per load current) within a few millimeters of the VM pins, and place a 0.1 uF ceramic directly at each supply pin for high-frequency bypass. Route the current-proportional output as a quiet analog trace to the ADC, away from the motor leads and gate-drive loops.
Do not size the supply voltage to the 40 V rating alone - automotive 12 V rails impose load-dump and jump-start transients, so add TVS clamping upstream and verify residual voltage at VM stays within the datasheet operating range. When migrating between DRV824x-Q1 family members for cost or availability, remember that RON and current rating change even though the footprint does not; re-run the thermal estimate for the substituted part. Configure off-state diagnostics via SPI at every key-on cycle to catch open loads before actuation.
Compliance Information
Q1 suffix per TI nomenclature denotes AEC-Q100 qualification of the DRV824x-Q1 automotive family. RoHS/lead-free per standard TI automotive motor driver product positioning; confirm exact environmental data on the TI ordering and quality page for this ordering part number.
