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 Post subject: Re: Anatomy of The DC/DC Converter
PostPosted: Tue Aug 29, 2017 1:00 am 
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Joined: Mon Aug 07, 2017 4:55 pm
Posts: 223
Location: Duvall, Wash.
What was the result of your parts-changing on this?

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Al Savage
2014 Rav4 EV, Shoreline Blue Pearl, #2609, first use 04Jun2014, 49k miles (Aug2017), OpenEVSE 40A. First DU replacement May2018 59k.
2018 Model 3 LR AWD, blue. 9.6kw solar
1999 E300 on B100 (sold Sep2018)
http://nissandiesel.dyndns.org


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 Post subject: Re: Anatomy of The DC/DC Converter
PostPosted: Tue Aug 29, 2017 5:29 pm 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 4116
Location: San Diego
asavage wrote:
What was the result of your parts-changing on this?



If you're asking me, it's all done.

Works great.

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Tony Williams
QC Charge
1780-104 La Costa Meadows Drive
San Marcos, California 92078 USA
tony@QCcharge.com
www.QCcharge.com
Twitter: QCPower
1-844-EV-PARTS
1-844-387-2787
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 Post subject: Re: Anatomy of The DC/DC Converter
PostPosted: Tue Aug 29, 2017 8:45 pm 
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Joined: Mon Aug 07, 2017 4:55 pm
Posts: 223
Location: Duvall, Wash.
Diodes typically fail shorted, and when I saw dox's measurements I became suspicious.

ddoxey wrote:
Image

This smaller board on the side holds two Bussmann FWP-40A14Fa [edit by ALS: fuses] -- presumably the ones that burn out when the cabin heater craps out.


TonyWilliams wrote:
Awesome work. I'll be pulling one part next week, with a blown diode.


It's not a diode, it's a high-speed fuse, 40 ampere, used to protect more-sensitive semiconductor circuits.

http://www.cooperindustries.com/content ... 07-hsf.pdf

Page 5:
Image

Bussman wrote:
What is this symbol?
The term "semiconductor fuse" used for high speed fuses is misleading. Although high speed fuses often display a fuse and diode symbol on their label (like the one above), there is no semiconductor material in their construction. The symbol on their label is there solely to denote their application is for protecting "semiconductor" devices.


I presume that the failed heater causes a fuse in the DC converter to blow. When you both (Tony & dox) had it apart, was it just one, or both, that were open on your units?

_________________
Regards,
Al Savage
2014 Rav4 EV, Shoreline Blue Pearl, #2609, first use 04Jun2014, 49k miles (Aug2017), OpenEVSE 40A. First DU replacement May2018 59k.
2018 Model 3 LR AWD, blue. 9.6kw solar
1999 E300 on B100 (sold Sep2018)
http://nissandiesel.dyndns.org


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 Post subject: Re: Anatomy of The DC/DC Converter
PostPosted: Thu Aug 31, 2017 6:48 pm 
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Joined: Mon Aug 07, 2017 4:55 pm
Posts: 223
Location: Duvall, Wash.
Nudge.
asavage wrote:
When you both (Tony & dox) had it apart, was it just one, or both, that were open on your units?

_________________
Regards,
Al Savage
2014 Rav4 EV, Shoreline Blue Pearl, #2609, first use 04Jun2014, 49k miles (Aug2017), OpenEVSE 40A. First DU replacement May2018 59k.
2018 Model 3 LR AWD, blue. 9.6kw solar
1999 E300 on B100 (sold Sep2018)
http://nissandiesel.dyndns.org


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 Profile  
 
 Post subject: Re: Anatomy of The DC/DC Converter
PostPosted: Fri Sep 01, 2017 7:34 am 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 4116
Location: San Diego
Just one blew.

_________________
Tony Williams
QC Charge
1780-104 La Costa Meadows Drive
San Marcos, California 92078 USA
tony@QCcharge.com
www.QCcharge.com
Twitter: QCPower
1-844-EV-PARTS
1-844-387-2787
1-760-798-0342 Office
Hours M-F, 9-5 Pacific Time


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 Post subject: Re: Anatomy of The DC/DC Converter
PostPosted: Fri Nov 20, 2020 8:51 pm 
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Joined: Mon Jul 15, 2019 2:02 am
Posts: 10
Location: Norcross, Georgia
What is the part number for that DC\DC converter you guys were dissecting so mercilessly?

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Toyota RAV4 EV 2013
Hyundai Ioniq 2017 SEL (Silver and Blue)


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 Post subject: Re: Anatomy of The DC/DC Converter
PostPosted: Fri Nov 20, 2020 10:18 pm 
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Joined: Mon Aug 07, 2017 4:55 pm
Posts: 223
Location: Duvall, Wash.
ddoxey's Google Docs links are all dead.

The generic Toyota part No. for the RAV4 EV DC/DC Converter is G9270-0R011, according to TSB T-SB-0111-14. I posted that TSB as images in this thread.

The Toyota-branded DC/DC Converter may be the same part as Tesla 6009170 (or 1458271 for Refurb? (ie the fuse was replaced)), which is the Gen1 converter used on 2012-2016 Tesla Model S.

There are several on eBay ATM in the $350-$630 range. Some canned eBay searches:

Image Image Image Image Image Image Image Image

_________________
Regards,
Al Savage
2014 Rav4 EV, Shoreline Blue Pearl, #2609, first use 04Jun2014, 49k miles (Aug2017), OpenEVSE 40A. First DU replacement May2018 59k.
2018 Model 3 LR AWD, blue. 9.6kw solar
1999 E300 on B100 (sold Sep2018)
http://nissandiesel.dyndns.org


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 Profile  
 
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