EV ACCESSORY BATTERY CHARGER (DC-DC CONVERTER) COMPARISON

All information is a snapshot taken in September 2009 and is subject to change without being updated here. Issues highlighted in yellow or red. Sorted from left to right by popularity on EV Discussion List Photo Album per www.evalbum.com/dcdcr. Updated 9/11/09.

Parameter Comment DCDC Converters:                        
Make   Iota Sevcon Vicor Astrodyne Curtis Zivan Azure Dynamics Kelly Brusa MES Electric Conversions
Number of users on EVDL   164 90 76 54 44 39 34 27 12 2 0
DC Input Voltage   130 to 190 28.8 to 60 for 622-11071/11084,
57.6 to 100 for 622-11075/11086
66 to 160 120 to 175 or 234 to 350 via switch for AS series,
120 to 350 for PSP and SP series
24 to 96 nominal 70 to 160 or 100 to 200 200 to 400 56 to 200 67 to 250 100 to 400 84 to 120 or 96 to 144
Isolated Isolation provides single fault tolerance against electric shock. ? yes yes yes yes ? ? yes yes yes ?
Output Overcurrent Protection Supplies maximum continuous current or current foldback in the event of excessive current draw including a short circuit. yes yes yes yes yes ? ? yes yes yes ?
Output Voltage approximately 13.5V required to keep backup accessory battery charged on float to run headlights and battery and vehicle management systems in the event of a DCDC converter failure for safety. 13.6 13.4 13.8 13.5 13.5 14 13.5 13.5 13.8 14.5 13.6
Overtemperature protection Cuts back output current in the event of excess temperature detected in the power stage to protect the charger. yes yes yes yes yes ? yes yes ? yes ?
Radio Frequency Interference regulatory compliance Will not interfere with wireles equipment such as radios and cell phones; covered by FCC or CE. ? yes, CE yes, CE yes, CE yes, CE yes, CE ? ? ? ? ?
Models   DLS-15
DLS-30
DLS-45
DLS-55
DLS-75
DLS-90
622-11071
622-11075
622-11084
622-11086
VE-JTPEW AS150-13.5
AS320-13.5
PSP500-13.5
PSP600-13.5
PSP1000-13.5
PSP1500-13.5
SP75-13.5
SP100-13.5
SP150-13.5
SP200-13.5
SP320-13.5
SP500-13.5
1400E series
1410E series
70 to 160 in/50A out
100 to 200 in/60A out
DCDC750BC12 HWZ Series DCDC600/xx/14 400-1000 84 to 120 or 96 to 144 volts input
Continuous Output Power, Watts 300W for car with minimum accessories; less for bike 200 for DLS-15
400 for DLS-30
600 for DLS-45
750 for DLS-55
1000 for DLS-75
1200 for DLS-90
180 for 622-11071/11075,
300 for 622-11084/11086
100 75 to 1500 200 or 300 700 or 840 750 337 600 1000 400
Price   $149 for DLS-15
$159 for DLS-30
$179 for DLS-45
$199 for DLS-55
$289 for DLS-75
$329 for DLS-90
$225 for 622-11086
from EV Parts
$226
from EV Parts
$80 to $826,
direct
$410 for 1400E 72/96 model 1201
from KTA Services
$525 for both
from KTA Services
$1,580
from Electro Automotive
$189
from Cloud Electric
$946
from Metric Mind
$1,604
from Metric Mind
$275
from KTA Services
Cost performance, $/W   $0.27 for DLS-90 $0.75 $2.26 $0.55 for PSP1500-13.5 $1.37 $0.62 $2.11 $0.56 $1.58 $1.60 $0.69
Sealed More reliable long term in automotive environment if heat dissipation adequate. no yes yes no yes no yes yes yes yes yes
Cooling method   forced air passive passive forced air passive forced air forced air passive passive forced air passive
Operating temperature range, degrees C   0 to 40 -30 to 55 -10 to 100 0 to 60 for PSP series,
-10 to 60 for AS and SP series except -20 to 65 for SP320-13.5 and -10 to 50 for SP500-13.5
-30 to 55 ? -25 to 85 -10 to 40 ? 50 max ?
Dimensions, inches (model)   9.7x6.7x3.4 for DLS-15/30/45/55,
13x6.5x3.4 for DLS-75/90
7.5x2.9x1.7 2.6x2.5x0.7 up to 11x5.1x7.5 for PSP1500-13.5 7.0x5.7x3.0 ? 13.0x4.3x7.4 6.8x4.8x2.6 9.1x5.0x3.5 11.6x6.1x5.2 7.9x5.5x2.7
Weight, pounds   5 for DLS-15/30/45/55,
7.8 for DLS-75/90
? 0.3 up to 15.2 for PSP1500-13.5 4 ? 6.8 5.5 6.0 8.8 4.8
Distributors:
Canadian EVs
Errington, BC                      
Cloud Electric Clarkesville, GA yes             yes     yes
Electro Automotive Felton, CA             yes        
EV Parts Sequim, WA yes yes yes                
EVs of America Wolfeboro, NH                      
EV Source Logan, UT yes                    
KTA Services Ramona, CA         yes yes         yes
Metric Mind Happy Valley, OR                 yes yes  
Thunderstruck Motors Sebastopol, CA   yes                  

Note: Total DCDC converters listed on EVDL is 827. Top 10 make up 630 or 76% of total. 8 of the top 10 are shown above. Todd and DC Power Systems are also popular DCDC converters with 71 and 31 users respectively, but they appear to be no longer available hence they are not included above. Other unpopular DCDC converters sold by distributors above that did not present adequate information were not added.

If you have any corrections, questions, updates or additions to the information on this page, please contact the NBEAA per information posted on www.nbeaa.org.