TDK Electronics · TDK Europe

xEVCap

A standardized and modular DC link capacitor design

 Intro Pic

DC link capacitor designs for traction inverters are traditionally fully customized, making the development time-consuming and practical only for large quantities. With the scalable and modular xEVCap, TDK can help inverter designers meet varying capacitance and current requirements while saving valuable time to market. The xEVCap is extremely flexible in terms of performance ranges and changes to the inverter design, making it a great fit for platform concepts and scalable designs. 


Product line-up

CN 120 Hz μFOrdering codeImax
10 kHz
A
ESL
1 Mhz
nH
ESR 
10 kHz
Î kAIs kADimension
L x W x H
mm

VR (105 °C) = 500 V DC ; VMAX = 525 V; Vs = 665 V

200B25654A5207K00140171.132.1685 x 47 x 40.5
270B25654A5277K00150170.892.88109 x 47 x 49.5

VR = 650 V DC ; VMAX = 750 V; Vs = 900 V

115B25654A6117K00160140.512697.5 x 35.5 x 38
130B25654A6137K00142170.891.6585 x 47 x 40.5
175B25654A6177K00155170.662.26.5109 x 47 x 49.5

VR (105 °C) = 850 V DC ; VMAX = 890 V; Vs = 1200 V

80B25654A8806K00156140.571.75.297.5 x 35.5 x 38
100B25654A8107K00140171.041.44.285 x 47 x 40.5
135B25654A8137K00150170.781.95.8109 x 47 x 49.5

VR (105 °C) = 920 V DC ; VMAX = 950 V; Vs = 1250 V

60B25654A9606K00155140.651.54.797.5 x 35.5 x 38
75B25654A9756K00135171.181.23.885 x 47 x 40.5
110B25654A9117K00145170.891.65.1109 x 47 x 49.5




Benefits

 Benefit 1 Pic

Scalable performance

To meet different capacitance and current requirements, multiple xEVCaps can be easily connected in parallel to busbars or PCBs.


Design flexibility

  • Eleven variants per connection style (60 to 270 µF) in three different mechanical versions and four voltage levels (500 to 920 V).
  • Mechanical integration in a sandwich or flat design

     
 Benefit 2 Pic

 Benefit 3 Pic

Different connection styles

  • B25654A*001 with lead wires intended for PCB assembling or soldering to busbars. Flat terminal options can be discussed upon request.

Time to market

xEVCaps reduce costs by using standardized capacitor modules and thus minimize the variety of components to be stocked. If the requirements change during development, the development time can be shortened by simply adding or removing xEVCap modules.

 Benefit 4 Pic

Customization

 Pic Customization


System design

Requirements

 

Customer requirements
C (μF)Minimum 450
IRMS (max.) [A]250 … 300
IDC (max.) [A]250 … 300
VR [V]800 (900 for limited time)
P [kW]250
Iph,RMS (max.) [A]400 … 500 (max 650 for 10 seconds)
ESL [nH]~7
 Pic Load Profile

Clara Tool xEV Cap load profile as an example

 


Proposals

The following two designs meet the system requirements; the one with 6 xEVCaps is optimized for low inductance and high performance, and the other with 4 of them for smaller size. This modular approach gives inverter designers another degree of freedom.

 Pic 1

  • 300 kW with 300 A, harmonics from 8 kHz to 110 kHz
 Pic 2

  • 200 kW with 200 A, harmonics from 20 kHz to 160 kHz
  • Cooling at +70 °C, ambient at +85 °C, and terminals at +105 °C  

 

The following table provides a direct comparison of these two proposed solutions.

CR [μF]VR,DC [V]IC,RMS (max.) @ 10 kHz [A]LS @ 1 MHz [nH]ESR @ 10 kHz [mΩ]Dimension L x W x H [mm]Number of units 
(Ctotal, IRMS)
7585056140.5797.5    35.0    42.5x6 (450 µF, 336 A) lower inductance, higher IC,RMS
13085050170.78109.0   46.5   40.5x4 (520 µF, 200 A) smaller size

 


Applications

The scalable and modular xEVCap helps inverter designers meet varying capacitance and current requirements for vehicles produced in small and medium quantities.

 Heavy Vehicles
 Construction machines
 Busses
 Light vehicles
 Passanger cars
 Industrial Applications

Get data sheets and search

PDF Rated voltage (V DC) Capacitance (µF) RMS current (A) Design THB compliance
500 - 920 60 - 270 38 - 60 Lead wire terminal +40 °C / 93% RH / VR DC / 1000 h

In order to download up to 20 files together as zip, please mark them with the check box. To start the download, please click the Download button at the end of the list.


Product resources

Presentations

Step files

Step files for flat plates available on request



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