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The reason that SHx floats is due to the high-side gate architecture. When the low-side FET is not on, the leakage from SHx will have no path to ground which means that SHx will float up to VM, through the body diode of the FET, as shown in the diagram…
Other Parts Discussed in Thread: DRV8910-Q1 , DRV8904-Q1 , DRV8906-Q1 , DRV8908-Q1 , DRV8912-Q1 DRV89xx-Q1 (DRV8904-Q1,DRV8906-Q1,DRV8908-Q1, DRV8910-Q1, DRV8912-Q1) device has internal PWM generator. When PWM Duty is set as FFh(max), it is very close to 100…
Other Parts Discussed in Thread: DRV8329 , DRV832X When determining the MOSFETs a gate driver can support one of the specifications that should be looked at is the maximum average gate current that the gate driver can supply. To switch a MOSFET gate drivers…
Part Number: DRV8353RS-EVM Other Parts Discussed in Thread: CSD19532Q5B , DRV8353
The DRV8353Rx-EVM is a 100V-capable evaluation module that can be used to evaluate the functionality and features of the DRV8353Rx. The DRV8353Rx drives 6 CSD19532Q5B 100V…
In this E2E FAQ we will cover frequently asked questions about MCx devices in schematic and layout stages of design.
1. How should I configure the Thermal Vias on the BLDC motor driver device?
A common equation we use for the thermal resistance of vias…
In this FAQ we will cover some common faults that are triggered and how to resolve them by tuning the settings available on the MCx devices (with example pictures from the GUI).
1. MPET IPD Faults
A common fault we see with customers are MPET faults…
Part Number: DRV8316
How to put the device in current limiting mode or current sense amplification mode?
The VREF/ILIM pin and the PWM mode the device is in determine if the device will be in in current limiting mode or current sense amplification mode…
Part Number: DRV8714-Q1 Other Parts Discussed in Thread: DRV8706-Q1 , DRV8705-Q1 , DRV8718-Q1
DRV8705-Q1, DRV8706-Q1, DRV8714-Q1, DRV8718-Q1
Above automotive gate driver family has offline diagnostic function. Procedure of offline diagnostic is shown in…
Other Parts Discussed in Thread: DRV8311HEVM When it comes to designing your system, sometimes you may find that there is a limited amount of ADC channels available on your MCU. One way that you can reduce the number of needed ADC channels is by converting…
Part Number: MCF8316A Other Parts Discussed in Thread: MCF8315A ,
Abstract
Sensorless Brushless DC (BLDC) motors are widely used in industrial and medical applications such as vacuum cleaners, pumps, CPAP blowers etc. Decelerating a BLDC motor in these…