DRV8703-Q1EVM

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The DRV8703-Q1EVM evaluation module provides the necessary platform for the design and evaluation of the DRV8703-Q1 three-phase pre-driver IC. The board consists of a DRV8703-Q1 IC that drives three External Device Switches (EDS) configured with a self-resonant P-channel MOSFET. The board also supports a single Shunt Resistor configuration or dual Shunt Resistor system. The use of a higher current driving capability is facilitated by the pre-driver’s sophisticated design. This allows the user to take full advantage of the benefits of the DRV8703-Q1.

The DRV8703-Q1EVM is designed to evaluate the DRV8703-Q1 by providing an array of electrical and thermal features. These include an LED indicator that shows the operating current, a DC port for testing the voltage across the FETs, a PWM input for generating PWM signals to drive the FETs, and an IsoSPI interface for controlling the FETs. The board also provides a range of safety features, including an adjustable over-temperature shutdown circuit and a fault detection circuit to detect and latch over-current fault conditions.

The DRV8703-Q1EVM is well suited for use in a variety of applications where higher current levels need to be driven accurately. Examples of such applications include motor control, inverters, direct current (DC) loads, AC-DC power supplies, and LED lighting systems. The DRV8703-Q1’s ability to drive FETs at high current levels with relatively small number of components and its integrated safety features also make it an excellent choice for automotive power generation and control applications.

The working principle of the DRV8703-Q1EVM is based on a three-phase linear driver topology. This allows for accurate current control of each phase of the three-phase drive system while providing good thermal control. Each phase includes two FETs in a half-bridge configuration, along with two current sensing resistors. The FETs are driven by the DRV8703-Q1’s self-resonant P-channel half-bridge topology, which switches the FETs on and off with a sinusoidal waveform. This ensures smooth operation and reduces audible noise.

The DRV8703-Q1’s features provide a variety of benefits that can be realized in applications that require high current levels. First, the use of the DRV8703-Q1 eliminates the need for external gate drivers, substantially reducing the component count and complexity of the system. In addition, the pre-driver’s P-channel half-bridge design eliminates the need for a free-wheeling diode, greatly simplifying the system. As a result, the system is much more efficient and less susceptible to failure due to incorrect component placement.

The DRV8703-Q1’s ability to control the current level of each phase individually allows for precise control of motor speed. This allows the user to adjust the speed of the motor on the fly, allowing for fine-tuned control of the application. Finally, the integrated safety features ensure a high level of reliability in the system. The over-temperature shutdown circuitry and fault detection circuit help to prevent catastrophic failure of the system, while the current sensing resistors allow for precise current control.

In conclusion, the DRV8703-Q1EVM is a useful evaluation module that can be used to evaluate the DRV8703-Q1 IC for a variety of applications. The board provides features for controlling each phase of a three-phase drive system, including integrated safety features, current sensing resistors, and temperature shutdown circuitry. Additionally, the use of the DRV8703-Q1’s pre-driver eliminates the need for external gate drivers, simplifying the overall system design. The DRV8703-Q1EVM is suitable for use in a variety of applications, including motor control, inverters, DC loads, AC-DC power supplies, and LED lighting systems.

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