DRV8308RHAR

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The DRV8308RHAR is an integrated motor driver IC that is used to drive step motors, brushless DC motors, brushed DC motors, and stepper motors. It combines both the low-side and high-side drivers on one chip and allows for both digital and analog control. It is designed for high-voltage applications, with an input voltage range of 10 to 80 V. The DRV8308RHAR also features an efficient three-phase current-mode control architecture and provides high-efficiency and low-EMI operation by minimizing the peak current demand from the power supply. The IC is also capable of operating in both half-bridge and full-bridge configurations, making it ideal for applications with limited power supplies.

The DRV8308RHAR’s main application fields include digital power supplies, HVAC systems, power transmission, battery-powered vehicles, and appliances. The DRV8308RHARis also suitable for other applications that require low-noise, high-efficiency motor control. Additionally, the DRV8308RHAR can provide smooth, low-ripple current control for a wide range of motors, from low-power DC to large three-phase motors.

The DRV8308RHAR utilizes a three-phase current-mode control architecture to provide high-efficiency and low-EMI operation. The three-phase current-mode control architecture provides a more compact and efficient design than the traditional full-bridge driver designs. This is because the input power to the chip can be switched at much faster speed and the maximum peak current demand is drastically reduced, leading to improved efficiency and transient response. The DRV8308RHAR also features programmable deadtime and phase-shift control, as well as a low-resistance power MOSFET gate driver.

The DRV8308RHAR utilizes a digital current-sense amplifier to accurately measure the motor current and provide current feedback. This feedback is used by the motor controllers to accurately control the motor current. The motor current can be programmed using the onboard digital interface, which also provides an adjustable over-temperature protection and MOSFET short-circuit protection. The over-temperature protection prevents the motor from running at temperatures beyond its rated range, while the short-circuit protection prevents the MOSFETs from becoming damaged if the power supply is overloaded.

The DRV8308RHAR also features a range of diagnostic features to help users troubleshoot the drive. It has onboard oscilloscope functions and an analog voltage output that can be used to monitor the motor current, motor voltage, and temperature. The drive also features an adjustable protection system that can be used to trigger an alarm if the motor current is exceeded or if the temperature is too high.

The DRV8308RHAR is suitable for applications such as driver racks, HVAC systems, power transmission and other high-efficiency motor control applications. It is also capable of providing smooth, low-ripple current control for a wide range of motors, from low-power DC to large three-phase motors. With its integrated low-side and high-side drivers, digital current-sense amplifier, programmable dead time and phase-shift control and MOSFET short-circuit and over-temperature protection, the DRV8308RHAR is a powerful and reliable motor driver solution.

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