DR702Q/DR703Q Automotive H-Bridge Gate Driver
■The DR70xQ devices are small single H-bridge gate drivers that use four external N-channel MOSFETs targeted to drive a bidirectional brushed- DC motor.
■A PH/EN, independent H-Bridge, or PWM interface allows simple interfacing to controller circuits. An internal sense amplifier provides adjustable current control. Integrated Charge-Pump allows for 100% duty cycle support and can be used to drive external reverse battery switch.
■Independent Half Bridge mode allows sharing of half bridges to control multiple DC motors sequentially in a cost-efficient way. The gate driver includes circuitry to regulate the winding current using fixed off-time PWM current chopping.
■The DR70xQ devices include Smart Gate Drive technology to remove the need for any external gate components (resistors and Zener diodes) while protecting the external FETs. The Smart Gate Drive architecture optimizes dead time to avoid any shoot-through conditions, provides flexibility in reducing electromagnetic interference (EMI) with programmable slew-rate control and protects against any gate-short conditions. Additionally, active and passive pull downs are included to prevent any dv/dt gate turn on. DR70xQ are available in QFN-32 package.
●FEATURES
■AEC-Q100 qualified for automotive applications
▲Device temperature grade 1: –40°C to 125°C ambient operating temperature
■Single H-bridge gate driver
▲Drives four external N- channel MOSFETs
▲Supports 100% PWM duty cycle
■5.5V to 55V operating supply voltage range
■Three control-interface options
▲PH/EN, independent H- bridge, and PWM
■Serial interface for configuration (DR703Q)
■Smart gate drive architecture
▲Adjustable slew-rate control
▲Adjustable Tdrive dead time
■Independent control of each H- bridge
■Supports 1.8V, 3.3V, and 5V logic inputs
■Current-shunt amplifier
■Integrated PWM current regulation
■Low-power sleep mode
■Protection features
▲Supply Undervoltage Lockout (UVLO)
▲Supply Overvoltage Lockout (OVLO)
▲Charge-Pump Undervoltage (CPUV) Lockout
▲Overcurrent Protection (OCP)Gate-Driver Fault (GDF)
▲Thermal Shutdown (TSD)
▲Watchdog Timer (DR703Q)
▲Fault-Condition Output (nFAULT)
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DR702Q 、 DR703Q 、 DR70xQ 、 DR703DQ 、 DR702DQ 、 DR704Q 、 DR703xQ |
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Automotive H-Bridge Gate Driver 、 small single H-bridge gate drivers |
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[ Automotive ][ Power window lift, sunroof ][ seats ][ sliding door ][ trunk ][ tailgate ][ Relay replacement ][ Brushed-DC ] |
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Datasheet |
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Please see the document for details |
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QFN-32 |
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English Chinese Chinese and English Japanese |
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19 Sept 2022 |
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Rel 1.1 |
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2.8 MB |
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