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Other Parts Discussed in Thread: DRV8662 , DRV8662EVM I'm designing a circuit that needs to deliver +/- 50-100V pulses into a resistive load of 1k-2k ohms, The duty cycle would be low - about 10% at most.
Any chance the DRV8662 could do this? Any idea…
Other Parts Discussed in Thread: DRV8662 , DRV8662EVM Hi Brian-
What is DRV8662's switching frequency at the default values (Lb=4.7uH; Cb=100nF) and how it is going to change if I use 3.3uH and 56nF?
Thanks,
Alex
Guy,
The DRV8662 can handle the current required for 75nF @ 60Vpp , 3kHz. I was a little worried about the gain bandwidth of the amplifier, but it looks okay too. See below.
I would recommend trying the DRV8662EVM with the actuator and seeing if the…
Bruce,
You could divide the control signal in half; however, I would recommend dividing it down to 1.8V if possible to avoid any issues with clipping.
Balanced vs unbalanced should not matter too much. Take a look at the DRV8662EVM User's Guide for details…
Other Parts Discussed in Thread: DRV201 , DRV2605 , DRV8662EVM Hi
I am using drv201 +mux in our product in order to activate some kind of motor.
with the drv201 we generates 10 HZ signal - ( absolute - sin or rect) and with the mux we do it positive or negative…
Other Parts Discussed in Thread: DRV8662 Hi,
I need to use the haptic driver DRV8662 to drive a piezo transducer to peak voltages of 200V. I have removed the on board input filter as my input signal is only a sinusoid, with peak to peak 3V, centred at…
Carter,
I am not sure what your graph is showing. Is the V/div 5V?
The DRV8662 boost is based on the feedback resistors on the FB node. When GAIN1 = 1 and GAIN0 = 0 on the EVM, the boost should be set to ~55V.
Thanks, Brian
