Forum Post: RE: DRV2605: device unexpectedly activating at startup
Hello, Is this for the DRV2605L device? The DRV2605L device has the brownout protection requirements, not the DRV2605 device. It is possible that the device is coming up in an unknown state when the...
View ArticleForum Post: RE: DRV2605: Haptices DRV2605 licence coverage
Hi Saki, When you use the DRV2605 / DRV2605L / DRV2625 devices, the Immersion license for the ROM waveform library(or libraries) is paid for in the price of the device. You do not need to pay...
View ArticleForum Post: RE: DRV2700EVM-HV500: output voltage ripple issues
Hi Andrea, Your post has been moved to the Haptics Forum for better support.
View ArticleForum Post: RE: DRV2700EVM-HV500: output voltage ripple issues
I just noticed that i've submitted the 200nF waveforms two times! Here are the waveforms for 2nF... 2nF, 10% duty-cycle input signal: 2nF, 50% duty-cycle input signal: 2nF, 90% duty-cycle input signal:
View ArticleForum Post: RE: DRV2605: Haptices DRV2605 licence coverage
Hi Saki, Please find section 11.1 of DRV2605 datasheet for license information. We have no plans for DRV2667 . -Morgan
View ArticleForum Post: RE: DRV2700EVM-HV500: output voltage ripple issues
Hi Andrea, There will always be a little ripple on the output due to the flyback nature of this design. However, the ripple can be optimized to the desired output voltage by adjusting the flyback...
View ArticleForum Post: RE: DRV2700EVM-HV500: output voltage ripple issues
Hi Kelly, thanks for your answer. Actually I'm using the configuration with the jumpers "up/up" (158V max) for ease of measuring. With the jumpers "down/down" (500V max) the ripple is very similar, not...
View ArticleForum Post: RE: DRV2605L: Why can't I find a Hap-Touch boosterpack for sale...
Hi Kelly, The pre-release app supports the DRV2605EVM-BT on iOS10? Could you send it my way? I just purchased this kit hoping I could plug and play but crashing on iOS10 is making this a non-starter....
View ArticleForum Post: DRV2605L: PWM specification
Part Number: DRV2605L Hi, I would like to ask you a basic question as below. 1) What is "fo(PWM) PWM Output Frequency (19.5K typ - 21.5K max Hz)" specification? (page6, 6.7 Switching Characterristics)...
View ArticleForum Post: DRV2605L: Analog input/output
Part Number: DRV2605L Hi, Let me confirm you a following issue. Q) DRV2605L has an analog input interface. My understanding is that analog input signal is converted to PWM signal according to signal...
View ArticleForum Post: RE: DRV2605L: Analog input/output
Sorry one more question, please. About ERM mode, the output is also the same as LRA mode, correct? (PWM out, not sine wave) Thanks!
View ArticleForum Post: RE: drv2605L problem driving ERM (overcurrent)
Hi Javier-san, Let me confirm the current. I suppose the overcurrent protection value is around 1.3A (4ohm/5.2V:VDD), correct? 0.65A (8ohm/5.2V) is within apecification, right? Thanks!
View ArticleForum Post: RE: LM98725 PLL Unlock
Dear James I have question. 1. In 8. March, I showed you some waveforms. Are they correct? 2. I want to know about correction between power sequence and PLL lock. Could you explain?
View ArticleForum Post: RE: DRV2700EVM-HV500: output voltage ripple issues
I also tried to replicate the behaviour shown in Figure 15 of the DRV2700EVM-HV500 datasheet. With 22nF load and a square wave input signal I obtain the following waveform (0-500V levels, switches set...
View ArticleForum Post: RE: DRV2700EVM-HV500: output voltage ripple issues
Hi Andrea, Thanks for the clarification and information. Correct, the ripple is due to the hysteretic control of the design described in section 4. For that reason, it can only be optimized for small...
View ArticleForum Post: RE: DRV2605L: PWM specification
Hi Takumi-san, 1. This description is referring to the output switching characteristic of the class-D amplifier. The DRV2605L is a class-D amplifier. 2. The output frequency in open-loop operation will...
View ArticleForum Post: RE: DRV2605L: Analog input/output
Hi Takumi-san, In closed-loop, the analog input interface is based on a reference voltage rage 0V-1.8V. The DRV2605L will track the resonance frequency of the LRA and always output a pseudo-square wave...
View ArticleForum Post: RE: drv2605L problem driving ERM (overcurrent)
Hi Takumi-san, Yes, 8ohms is within the specification.
View ArticleForum Post: RE: DRV2605: Haptices DRV2605 licence coverage
Thanks, Kelly-san and Morgan-san. Best Regards, Saki
View ArticleForum Post: How these circuit diagrams in the datasheet was made?
Hi everybody Sorry my post may be not relevant to the group ! I've seen so many IC datasheets, and so appreciate the elegant reference circuit diagrams they've made. I'm not meaning the 'function' of...
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