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TC Charger Brand DC-DC Converter TDC-320-12JG

Posted: Mon, 08 Oct 2018, 13:17
by MikeD
Its been some time since my last post but the work on MR02EV has continued regardless, the latest upgrade being a TDC-320-12JG DC-DC converter from TC Charger, supplied by

Over time I have used several DC-DC converters and the TDC-320-12JG is by far the best. Its is not the cheapest by is very high quality and has a reputation for reliability.

• Max Output Power: 1500W
• Input 220-450V DC
• Nominal Output Current(@12V): 110A
• Max Efficiency: ≥93%
• Voltage Regulation: ≤1.5%
• IP Standard: IP67
• Operating Temperature: -40℃~+60℃
• Storage Temperature: -45~105℃
• Insulation Resistance: In the environment of (23±2) ℃ and moisture at 80%-90%
• Noisy Distance in 1.5m,Noise: ≤50dB
• Cooling Method: Air Cooling
• Control Method: 12V Enable
• Size (mm): 222(L) × 109(W) × 79(H)
• Net Weight: 4kg

Safety Protections
• Input over/under voltage and reverse polarity protection;
• Output over current / short circuit and over temp protection.
dc-dc2.jpg (80.11 KiB) Viewed 1046 times
[ Edited Coulomb to add input voltage range, from this PDF ]

Re: Michael's MR-02-EV

Posted: Thu, 11 Oct 2018, 08:36
by jonescg
Nice one! I got the air cooled one for the Prelude conversion. If ends up running too hot I can always swap the fins for a cooling block.

Upgrading The 12V Ancillary Battery

Posted: Sun, 14 Oct 2018, 13:25
by MikeD
When installing the TDC-320 DC-DC converter I also replaced the 12V ancillary battery with a Drypower 12SB22C 12Volt 22Ah battery. I chose a sealed lead-acid because they are designed for a trickle (or float) charge, which is most of its life in MR02EV.

22Ah is a significant increase in capacity over the previous 15Ah auxiliary battery, which was deliberate. MR02EV needs a pretty “stiff” 12V supply to keep the electronics happy especially at night, in the rain, when the wipers and lights are on. I suspect a contributing factor to the premature death of my last two DC-DC converters was the lack of a decent 12V battery to buffer the effects of short, sharp 12V loads.

MR02EV Sold!

Posted: Mon, 10 Jun 2019, 07:29
by MikeD
Sadly I have sold the Toyota MR2 EV so that I can focus on a new project. A 2002 Lotus Elise.

See my new thread here:

Re: Michael's MR-02-EV

Posted: Wed, 17 Jul 2019, 12:55
by jonescg
MikeD wrote:
Thu, 22 Jul 2010, 14:36
The motor in my car is an MES-DEA 200-250 which is manufacture by MES-DEA in Switzerland but purchased from Metric Mind in the USA. The selection and purchasing process is a bit convoluted and I could try to explain - alcohol would probably help.

The motor specification sheet.


Old news now, but I was wondering about the transaxle they offer - looks like a pretty handy feature.