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New Contributor

Hello!

Our company recently purchased a CY4609 interface development board through the authorized CYPRESS store. The power supply was overloaded accidentally and the rated voltage was 5V, but the actual use was 12V. Currently, the development board cannot work normally.

Can it be repaired?Which IC might burn out?


Thanks!

   pastedImage_3.png

 

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Moderator
Moderator

Hi,

I did not mean to ask you to press SW1 while measuring TP12 ( I was referring to Power Switch). Please measure TP12 without pressing SW1.

If TP12 is still 3.3 volts, last option is to replace Zero Ohm resistor and also try placing it across 2-3 instead of 1-2;

If this still does not work, there is high chance that the internal power circuitry powered from VBUS_DS pin#18 has rendered the HX3 chip damaged and unusable.

Regards,

Rajath

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11 Replies
Moderator
Moderator

Hello,

From the image you have shown, both the Power (PWR) and Suspend (SUSP) LEDs are ON, indicating that the power domains are up and HX3 IC is getting powered. Additionally, you can check Testpoints TP5 and TP6, you should see 3.3 and 1.2 volts respectively. You can also check the voltage at the reset pin by measuring at switch SW1.

Also, can you please elaborate on what issues you are exactly seeing?

Regards,

Rajath

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New Contributor

Hello,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The pin voltage as confirmed below:

Thanks!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

发件人: RajathB_01<mailto:community-manager@cypress.com>

发送时间: 2019年10月14日 14:12

收件人: zhou hongliang<mailto:zhou.hongliang@seiriosai.com>

主题: Re: - CY4609 Interface development board power overload

<http://www.cypress.com>

Cypress Developer Community <https://community.cypress.com/?et=watches.email.thread>

CY4609 Interface development board power overload

reply from RajathB_01<https://community.cypress.com/people/RajathB_01?et=watches.email.thread> in USB Hosts, Hubs, Transceivers - View the full discussion<https://community.cypress.com/message/211826?et=watches.email.thread#211826>

Hello,

From the image you have shown, both the Power (PWR) and Suspend (SUSP) LEDs are ON, indicating that the power domains are up and HX3 IC is getting powered. Additionally, you can check Testpoints TP5 and TP6, you should see 3.3 and 1.2 volts respectively. You can also check the voltage at the reset pin by measuring at switch SW1.

Also, can you please elaborate on what issues you are exactly seeing?

Regards,

Rajath

Reply to this message by replying to this email, or go to the message on Cypress Developer Community<https://community.cypress.com/message/211826?et=watches.email.thread#211826>

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New Contributor

Hello,

The pin voltage as confirmed below:

Thanks!

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New Contributor

Hello,

The pin voltage as confirmed below:pastedImage_1.png

     Thanks!

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Moderator
Moderator

Hello,

It looks like the power switch TPS2556DRBT (U5) has fried because of excessive input voltage (100% excess). You can replace that part and see if the board works normally.

Regards,

Rajath

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New Contributor

OK, I'll try!

Thanks!

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New Contributor

Hello,

We have replaced a new power switch TPS2556DRBT (U5). The measurement result of electrification is the same as before. There is no voltage output of TP3. USB3.0 interface is still unable to check the signal.

What other possible reasons?

Thanks!

发件人: RajathB_01<mailto:community-manager@cypress.com>

发送时间: 2019年10月14日 19:10

收件人: zhou hongliang<mailto:zhou.hongliang@seiriosai.com>

主题: Re: - CY4609 Interface development board power overload

<http://www.cypress.com>

Cypress Developer Community <https://community.cypress.com/?et=watches.email.thread>

CY4609 Interface development board power overload

reply from RajathB_01<https://community.cypress.com/people/RajathB_01?et=watches.email.thread> in USB Hosts, Hubs, Transceivers - View the full discussion<https://community.cypress.com/message/211847?et=watches.email.thread#211847>

Hello,

It looks like the power switch TPS2556DRBT (U5) has fried because of excessive input voltage (100% excess). You can replace that part and see if the board works normally.

Regards,

Rajath

Reply to this message by replying to this email, or go to the message on Cypress Developer Community<https://community.cypress.com/message/211847?et=watches.email.thread#211847>

Start a new discussion in USB Hosts, Hubs, Transceivers by email<mailto:discussions-community-usb-usbhostshubs--transceivers@broadcomwiced-v8.hosted.jivesoftware.com> or at Cypress Developer Community<https://community.cypress.com/choose-container.jspa?contentType=1&containerType=14&container=2182&et=watches.email.thread>

Following CY4609 Interface development board power overload<https://community.cypress.com/message/211847?et=watches.email.thread#211847> in these streams: Inbox

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You may unsubscribe<https://community.cypress.com/unsubscribe.jspa?email=zhou.hongliang%40seiriosai.com&token=76900accdb1ab7c3537aed800118ec6dfaa6eb31289ebc575a0413d68c6dd15e> instantly from Cypress Developer Community, or adjust email frequency in your email preferences<https://community.cypress.com/user-preferences!input.jspa>

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Moderator
Moderator

Can you please check voltages on

1) TP12 (EN of PWR Switch)

2) TP11 (Fault/OVRCUR of PWR switch)

3) Voltage across the Zero Ohm resistor DPR1 0603

4) Voltage on the terminal #2 of the Zero Ohm resistor DPR1 0603

0ohm.jpg

Please set J6 and J7 to 1-2 (internal ROM mode).

Regards,

Rajath

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New Contributor

Hello,

The measurement results are as follows:

It looks fine

Thansks!

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Moderator
Moderator

Hi,

I did not mean to ask you to press SW1 while measuring TP12 ( I was referring to Power Switch). Please measure TP12 without pressing SW1.

If TP12 is still 3.3 volts, last option is to replace Zero Ohm resistor and also try placing it across 2-3 instead of 1-2;

If this still does not work, there is high chance that the internal power circuitry powered from VBUS_DS pin#18 has rendered the HX3 chip damaged and unusable.

Regards,

Rajath

View solution in original post

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New Contributor

Hi

Our hardware colleague thinks that the main chip of HX3 should be burned out, so we need to buy the main chip for replacement and confirmation.

Thanks!

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