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…
Part Number: DRV8662 Other Parts Discussed in Thread: LM48560 , DRV2700 Hi,
I am trying to use the DRV8662 to drive a 1uF PZT up to 12Vp2p. I have set the gain setting to 00, FBB to 36.7k and FBT to 300k.
RSET pin set to maximal BST current limit, I have…
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…
Part Number: DRV8662 Hi team,
My customer is considering to use the DRV8662. Could you please help with the question below?
Is the relationship between IN+ and OUT+/OUT- correct in the following? When IN+ = 1.8 [V], OUT+ =Vpp [V], OUT- = 0 [V], When IN…
Hi, Shozo,
It could be a possible cause. However, have you reviewed all the external components connected to the DRV8662 and ensure that they are not damaged?
Especially, the switching inductor, was it also damaged? Do you see the same impedance level…
Hello,
If the current pulse is a problem, then you can try to reduce it by increasing the boost capacitance (or just adding a small ESR/ESL capacitor in parallel).
Alternatively, you could add a ferrite bead in series with the output and possibly a shunt…
