DC-DC Convertor Failure

Those are two different things, both contained in the inverter assembly.

Reference in the manuals to the "DC/DC converter" always means the simple buck converter from traction battery voltage down to aux battery voltage. That's located down below the main IPM in the inverter assembly.

When the manuals refer to the "boost converter", that's the big one that's in fact bidirectional: it boosts traction battery voltage up to 650 for operating the motors, and also bucks motor voltage down to traction battery voltage for regen and charging. The transistors for that one are part of the main IPM, though the reactor and capacitors needed in that circuit are separate parts.

 

Why is that?

 

This was really useful. I have just been quoted 13 000 SEK for our Gen 2 Prius. This has done close to 150 000 miles now and although we love it, it’s starting to become a question of what to fix.

QUOTE="zaxbyc, post: 3428113, member: 211720"]UPDATE

Fitted a second-hand part today.
The total cost was £119 for the Inverter and £45 for the coolant. So about $207 USD in total.
The most difficult bit was a plastic push-fitting of all things!
Started at around 10am, and finished at 12:30 with everything back together and ready for a test drive.
View attachment 251254 View attachment 251255

Went on a 20-mile drive, filled her up the drive back home, and the mileage seems to be back in the range I'm used to! 67.9 MPG - Remember this is UK MPG.

Thats 56.5 MPG US and 4.2L/100km for the Europeans
View attachment 251256

Thank you everyone for your help [/QUOTE]
T

 

thanks for your knowledge @Mendel Leisk on this. For some reason Google is saying I can not see these documents. Is there a setting I need to change or could you post them again

 

For the broken links:

inverter replacement

inverter coolant change

hopefully works; let me know.