DRV8718SQRHARQ1 - 40V 8-Ch Half-Bridge Gate Driver | Texas Instruments
MPN: DRV8718SQRHARQ1 β Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
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DRV8718SQRHARQ1 Overview
A half-bridge gate driver is a power management IC that controls the gate terminals of external power MOSFETs, allowing a low-voltage logic controller to switch high-current motor loads safely and efficiently. Within the power-delivery hierarchy, it sits between the microcontroller and the power stage: gate driver -> power stage -> motor/load driver -> power management IC. The DRV871x-Q1 family integrates multiple half-bridge drivers, driver power supplies, current shunt amplifiers, and protection monitors to reduce total system complexity, size, and cost.
Key features include AEC-Q100 qualification at temperature grade 1 (-40C to +125C ambient), pin-to-pin 4-channel (DRV8714-Q1) and 8-channel (DRV8718-Q1) variants, 4 PWM inputs with flexible output mapping, and a tripler charge pump that sustains 100% duty-cycle PWM operation. Integrated wide common-mode inline current sense amplifiers eliminate the need for external amplifiers in brushless DC motor control.
Architecturally, the DRV8718SQRHARQ1 integrates eight half-bridge gate drivers with internal gate-drive supplies and per-channel protection (overcurrent, OVP/UVP, thermal shutdown), making it suited to 12 V and 24 V automotive battery rails with load-dump headroom. Smart gate-drive features tune MOSFET switching to control EMI while limiting switching loss.
Typical applications include automotive DC motor control (pumps, fans, actuators), body electronics modules, HVAC dampers, and general-purpose multi-motor loads driven by external power MOSFETs.
Design consideration: choose external MOSFETs whose gate charge matches the drive capability of each channel, and route high-current paths away from the current-sense amplifier inputs to preserve accuracy.
This page synthesizes verified distributor data, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DRV8718SQRHARQ1 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 DRV8718SQRHARQ1 (same form factor and footprint) β differing in Current Sense Amplifiers, Package.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
DRV8718SQRVJRQ1
β Drop-Inπ Reference alternative (not in catalog)
DRV8714SQRHARQ1
β Drop-Inβ In Stock
$1.76 / Unit
View Datasheet βDRV8714SQRVJRQ1
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
DRV8718SQRGERQ1
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
DRV8718SQRHARQ1 Maximum Ratings & Electrical Characteristics
| Product Family | DRV871x-Q1 Automotive Multi-Channel Smart Half-Bridge Gate Drivers |
| Number of Half-Bridge Channels | 8 |
| Operating Supply Range | 4.9 V to 37 V |
| Absolute Maximum Supply | 40 V |
| Driver Type | Half-bridge gate driver for external power MOSFETs |
| Current Sense Amplifiers | Integrated wide common-mode inline CSA |
| PWM Inputs | 4 PWM inputs with output mapping |
| Charge Pump | Tripler charge pump for 100% duty-cycle PWM |
| AEC-Q100 Qualification | Qualified, temperature grade 1 |
| Operating Temperature | -40C to +125C (TA) |
| Package | 56-VQFN (8x8 mm) |
| Mounting Type | Surface Mount |
| Automotive Grade | Yes (AEC-Q100) |
| Applications | DC motors, general purpose |
| Protection Features | Integrated protection monitors (per family datasheet) |
DRV8718SQRHARQ1 56-vqfn (8x8 mm) Pin Configuration Guide
Pin configuration for DRV8718SQRHARQ1 (56-vqfn (8x8 mm) 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 DRV8718SQRHARQ1.
Refer to the datasheet for full pin configuration.
Typical Applications
DRV8718SQRHARQ1 is suitable for 6 applications: Automotive DC Motor Control (Pumps and Fans), Body Electronics and Actuator Modules, HVAC Damper and Blower Systems, Industrial 24V Multi-Motor Systems, Generic Half-Bridge Power Stages for Multiple Loads, Seat and Chassis Comfort Actuation.
Automotive DC Motor Control (Pumps and Fans)
The DRV8718SQRHARQ1 fits automotive pump and fan control because its 8 half-bridge channels drive up to four brushed DC motors bidirectionally from a single IC, and its 4.9 V to 37 V operating range covers 12 V and 24 V battery rails with load-dump headroom. AEC-Q100 grade 1 qualification (-40C to +125C) supports underhood mounting. Each half-bridge drives external power MOSFETs, so pump current ratings scale with MOSFET selection rather than the IC. The integrated wide common-mode inline current sense amplifiers return per-bridge phase current to the MCU for stall detection and load monitoring without external amplifier parts. The tripler charge pump allows 100% duty-cycle PWM, keeping pumps at full speed without gate-voltage refresh gaps; switching slew is tunable to control EMI near antenna modules.
Recommended
Body Electronics and Actuator Modules
Body control modules drive many small motors - door locks, mirror adjusters, HVAC dampers, lumbar actuators - and the DRV8718SQRHARQ1 consolidates up to 8 half-bridges in one 56-VQFN (8x8 mm) footprint, cutting PCB area and BOM cost versus discrete drivers. The 4 PWM inputs with flexible output mapping let a microcontroller with limited PWM resources control all eight outputs, reducing MCU pin count. AEC-Q100 grade 1 qualification addresses the -40C to +125C cabin-and-engine-bay spread. Integrated protection monitors (overcurrent, supply undervoltage/overvoltage, thermal) report fault conditions so the BCM can degrade gracefully. Because the DRV8714SQRHARQ1 is pin-to-pin with the DRV8718, one module PCB can serve both 4-load and 8-load trim levels, amortizing qualification across variants.
Recommended
HVAC Damper and Blower Systems
Automotive HVAC systems combine stepper or brushed damper motors with blower control, and the DRV8718SQRHARQ1 addresses both with 8 integrated half-bridges plus inline current sense amplifiers for blower-load feedback. The 37 V operating range (40 V abs max) tolerates transients on the 12 V HVAC rail, while AEC-Q100 grade 1 covers plenum temperatures. The tripler charge pump maintains high-side gate drive at 100% duty, so blowers run continuously at full speed without gate refresh artifacts that cause audible noise. Tunable gate-drive strength controls MOSFET switching slew to limit radiated EMI near infotainment modules. The 4-PWM-input architecture maps one MCU timer to multiple damper channels simultaneously, synchronizing zone control and reducing firmware complexity.
Recommended
Industrial 24V Multi-Motor Systems
Although automotive-qualified, the DRV8718SQRHARQ1 also serves industrial 24 V systems because its 4.9 V to 37 V range directly covers 24 V rails with transient margin. Applications include multi-axis conveyor actuators, valve manifolds, and robotics auxiliary drives where up to four motors share one controller board. The integrated inline CSAs provide per-channel current feedback for load monitoring and preventive-maintenance diagnostics, and protection monitors (overcurrent, thermal, supply window) replace discrete comparator circuits. Using external MOSFETs lets designers scale each half-bridge from a few amps to tens of amps while the gate-driver IC remains unchanged. The 56-VQFN 8x8 mm package with exposed thermal pad keeps gate-drive switching losses manageable at industrial PWM frequencies.
Recommended
Generic Half-Bridge Power Stages for Multiple Loads
As a general-purpose smart gate driver, the DRV8718SQRHARQ1 integrates the functions that normally require many discretes: gate-drive power supplies (tripler charge pump and linear regulators), level-shifting high-side drive, current shunt amplifiers with wide common-mode range, and protection monitors. A designer implementing any combination of eight half-bridges or four full bridges - solenoids, heaters via PWM, lamps, or motor phases - benefits from a single controlled-interface IC. The 4 PWM inputs with output mapping decouple the PWM source from the power-stage topology, so the same firmware drives 2-, 3-, or 4-motor configurations. AEC-Q100 qualification provides derating confidence even in non-automotive builds. The DRV871x-Q1 family datasheet (Rev. E) documents reference topologies for these power stages.
Recommended
Seat and Chassis Comfort Actuation
Seat adjustment, steering-column movement, tailgate lifts, and chassis comfort actuators are multi-motor automotive loads well matched to the DRV8718SQRHARQ1. One IC handles up to four bidirectional motors; the inline current sense amplifiers detect obstruction (pinch) conditions by monitoring current signatures, supporting safety functions. The 40 V absolute maximum and AEC-Q100 grade 1 rating address jump-start (24 V) and load-dump events in the 12 V vehicle network. The tripler charge pump keeps high-side MOSFETs fully enhanced at 100% duty for sustained stall-like loads during end-stop moves. Integrated protection plus MCU-controlled PWM mapping allows soft-start profiles that reduce actuator mechanical stress and audible clunk.
Recommended
Recommended Products Summary
Engineering reference data for DRV8718SQRHARQ1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DRV8718SQRVJRQ1 | DRV8714SQRHARQ1 | DRV8714SQRVJRQ1 |
|---|---|---|---|---|
| Package | 56-VQFN (8x8 mm) | 56-VQFN (8x8) - same | 56-VQFN (8x8) - same | 56-VQFN (8x8) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Half-Bridge Channels | 8 | 8 | 4 | 4 |
| Operating Voltage Range | 4.9 V to 37 V (40 V abs max) | 4.9 V to 37 V (40 V abs max) | 4.9 V to 37 V (40 V abs max) | 4.9 V to 37 V (40 V abs max) |
| AEC-Q100 Grade | Grade 1 (-40C to +125C TA) | Grade 1 | Grade 1 | Grade 1 |
| PWM Inputs | 4 with output mapping | 4 with output mapping | 4 with output mapping | 4 with output mapping |
| Charge Pump | Tripler, 100% duty-cycle PWM | Tripler, 100% duty | Tripler, 100% duty | Tripler, 100% duty |
| Inline Current Sense Amplifiers | Yes, wide common-mode integrated | Yes, integrated | Yes, integrated (4 channels) | Yes, integrated (4 channels) |
Key Differentiators
- Full 8-channel integration in one package (vs DRV8714SQRHARQ1)
- Integrated wide common-mode inline current sensing (vs DRV8718SQRVJRQ1 and discrete gate-driver solutions)
- Tripler charge pump for 100% PWM duty cycle (vs DRV8714SQRVJRQ1 (same feature) and standard bootstrap drivers)
Design Notes
The DRV8718SQRHARQ1 drives external power MOSFETs, so total power-stage capability depends on MOSFET selection, not the IC. Match each channel's drive strength setting to the MOSFET gate charge to balance switching loss versus EMI. The 4.9 V to 37 V operating window covers 12 V and 24 V rails; ensure board-level transients stay below the 40 V absolute maximum with TVS protection on the supply input. Estimated: a 12 V rail with 40 V TVS clamp leaves adequate margin, while an unclamped load dump can exceed the abs max and destroy the IC.
Place the 56-VQFN device close to the external MOSFET half-bridges and keep gate-drive loops small to limit parasitic inductance. Route the wide common-mode inline current-sense amplifier pairs as matched Kelvin traces directly at the sense resistor; long shared routes degrade current-measurement accuracy. Use the exposed die-attach pad soldered to a solid ground plane with multiple thermal vias for heat spreading. Separate the power ground and signal ground under the IC, joining them at a single star point near the sense resistors.
Ordering suffixes within the DRV871x-Q1 family encode configuration options; the SQRHA and SQRVJ variants are not interchangeable without verifying interface and feature settings against the datasheet ordering-information table. Do not assume the 8-channel DRV8718 can be swapped 1:1 with the 4-channel DRV8714 in firmware - the DRV8714 presents fewer channels on the pin-to-pin footprint, so output mapping tables must be updated. Finally, omitting charge-pump capacitors or using values below datasheet recommendations causes high-side gate droop and MOSFET overheating at high duty cycle.
Compliance Information
AEC-Q100 qualified for automotive applications, temperature grade 1 (-40C to +125C TA), per TI DRV871x-Q1 datasheet. RoHS/REACH status not stated in the provided web data - confirm on TI product page.
