DR703QAQFN32

The DR703Q is an intelligent single H-bridge driver designed for automotive applications, capable of driving four external N-channel MOSFETs simultaneously to achieve bidirectional brushed DC motor control. The DR703Q supports an SPI configuration interface. Both devices support PH/EN, independent H-Bridge, or standard PWM interfaces to achieve various motor controls such as forward, reverse, slow decay, and coast. Additionally, the integrated charge pump architecture supports 100% duty cycle output and can also be used to drive external battery reverse protection switches. The DR703Q can also control multiple DC motors in an economical and efficient manner through its independent half-bridge mode.

The DR703Q integrates a current-sense amplifier and includes a function for regulating winding current using fixed off-time PWM current chopping. Through its integrated intelligent gate driver module, the DR703Q can protect external FETs without any external gate components, such as resistors and Zener diodes. The DR703Q combines protection features and gate drive configurability to enhance design simplicity and elevate the intelligence of motor systems to a new level. For example, configurable dead-time optimization prevents shoot-through, provides active/passive pull-down, and protects against dV/dt gate turn-on; programmable slew rate control offers flexibility in reducing EMI. The DR703Q also integrates various protection functions—UVLO, CPUV, OCP, TSD, GDF, watchdog timer, etc. The DR703Q device is available in a QFN-32 package.