Thank you so much
Each piezo in the application is 0.8uF. Is 0.1uF sufficient? The voltage tolerance of the decouple capacitor should be 150 uF considering the boost voltage is 105V, If I use 1uF capacitor, can I easily find a regular capacitor whose vo…
Part Number: DRV2700 Other Parts Discussed in Thread: DRV2665 , DRV8662 , Hello,
I checked that the DRV2700EVM drives a 30nF capacitance piezo speaker/bender at 2.5kHz with 200Vp-p.
Can drv8662 and drv2665 operate under the same conditions?
If those are…
Part Number: DRV8662 Hi everyone, I bought 4 DRV8662 to drive a piezo ultrasonic emmitor, the problem is that I did it too quickly, after re-reading the datasheet, I've realised my mistake, the amplifier is made for low frequency application, by low frequency…
Part Number: DRV8662 HI Expert,
My customer is considering 2pcs piezos drive with 1pcs DRV8662, like following configuration,
Is it any problem?
If you have any advice, please let me know.
Step drive or Liner drive
From Datasheet Figure 8. Typical …
Part Number: DRV8662 The part referenced was ordered. paid and received and does not function and I have to assume at this point, defective.
We need to have this part for our light manufacturing business and a response is imperative...
Thank You!
Mary…
Hi Luis,
I already monitored the ouput with an osilloscope and ascertained a proper output signal.
I evaluated that the detection circuit does not affect the DRV8662 operation.
The problem is that the DRV8662 affect the detection circuit.
To make it clear…
Thanks Justin,
Just want to share this scope capture, input is 1.8Vp2p, Gain setting to 00,Vboost to ~18V, yellow is OUTA (5V/div), green is OUTB (5V/div) , blue is VBOOST (5V/div) , CH4 is IOUTA (50mA/div) , the light pink is OUTA-OUTB (10V/div) . DRV8662…
Hi, Boyuan,
Could you share a oscilloscope capture of PVDD and BST pins when you enable the device? PVDD should be 0V when the device is disabled as you correctly mentioned, but I would like to ensure that the level you are getting is correct when you…
Hello Yamaguchi-san,
1. The 50% duty cycle allows the source and input capacitors to settle before the DRV8662 is fully enabled. In other words, it gives time for the capacitor to charge with the DC offset between source and device input.
2. The delay…
Part Number: DRV8662 Hi team,
My customer is considering to use the DRV8662. Could you please help with the question below?
If the OUTPUT+ and OUTPUT- are shorted, how will be the output current? Does the current limit function work?
Regards,
Yamagu…
