Re: USB Audio self-powered not detecting cable removal/insert
Posted: Fri May 19, 2017 10:38 pm
Marc, thanks for the screen shots. They are keepers for all developers to observe. Wow !!
Really suggest to review the AP2822AK which are like under $0.10 USD each (see Avnet) in T&R qty and offer soft-start along with other features. Your EMI filter from ST can remain but there are other options. We sourced our EMI USB 2.0 and USB 3.0 filters from Kingcore (Taiwan) at great prices.
KC p/n.WCM-2012-900T
Price USD0.04/pc FOB Taiwan
SPQ=3000pcs/reel
The XMOS in rush solution should also work but if you consider the required number of SMT placements, it is a lower cost to consider a single device for VBUS protection than multiple discretes.
Another great partner we use for EMI filters, inductors is Max Echo in Taiwan. Have used them for years with great success. Looking forward in hearing about your success with a fresh board. In light of this VBUS issue, believe it will work as you expect.
Really suggest to review the AP2822AK which are like under $0.10 USD each (see Avnet) in T&R qty and offer soft-start along with other features. Your EMI filter from ST can remain but there are other options. We sourced our EMI USB 2.0 and USB 3.0 filters from Kingcore (Taiwan) at great prices.
KC p/n.WCM-2012-900T
Price USD0.04/pc FOB Taiwan
SPQ=3000pcs/reel
The XMOS in rush solution should also work but if you consider the required number of SMT placements, it is a lower cost to consider a single device for VBUS protection than multiple discretes.
Another great partner we use for EMI filters, inductors is Max Echo in Taiwan. Have used them for years with great success. Looking forward in hearing about your success with a fresh board. In light of this VBUS issue, believe it will work as you expect.