Passive Components Blog
No Result
View All Result
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • electro-mechanical news
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • inter-connect news
    • Market & Supply Chain
    • Market Insights
    • Medical
    • Modelling and Simulation
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors News
    • Resistors
    • RF & Microwave
    • Telecommunication
    • Weekly Digest

    High Energy Density Polymer Film Capacitors via Molecular and Interfacial Design

    Bourns Releases High Clearance and Creepage 1500VDC Power Transformer

    KYOCERA AVX Expands Stacked MLCC Capacitors Offering

    Murata and QuantumScape Joint Development for Solid Batteries Ceramic Separators

    YAGEO Unveils Compact 3.6kW LLC Transformer for OBC EV Charging

    Over-Voltage Protection Clippers, Clampers, Snubbers, DC Restorers

    KYOCERA Releases Shielded Board-to-Board Connectors for Reliable EMI Protection

    Wk 41 Electronics Supply Chain Digest

    Samtec Expands Connector Severe Environment Testing Offering

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Circuit Protection Video
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Inter-Connect Video
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos

    Connector PCB Design Challenges

    Efficient Power Converters: Duty Cycle vs Conduction Losses

    Ripple Steering in Coupled Inductors: SEPIC Case

    SEPIC Converter with Coupled and Uncoupled Inductors

    Coupled Inductors in SEPIC versus Flyback Converters

    Non-Linear MLCC Class II Capacitor Measurements Challenges

    Percolation Phenomenon and Reliability of Molded Power Inductors in DC/DC converters

    Root Causes and Effects of DC Bias and AC in Ceramic Capacitors

    How to Calculate the Output Capacitor for a Switching Power Supply

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Who is Who
  • PCNS
    • PCNS 2025
    • PCNS 2023
    • PCNS 2021
    • PCNS 2019
    • PCNS 2017
  • Events
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • electro-mechanical news
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • inter-connect news
    • Market & Supply Chain
    • Market Insights
    • Medical
    • Modelling and Simulation
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors News
    • Resistors
    • RF & Microwave
    • Telecommunication
    • Weekly Digest

    High Energy Density Polymer Film Capacitors via Molecular and Interfacial Design

    Bourns Releases High Clearance and Creepage 1500VDC Power Transformer

    KYOCERA AVX Expands Stacked MLCC Capacitors Offering

    Murata and QuantumScape Joint Development for Solid Batteries Ceramic Separators

    YAGEO Unveils Compact 3.6kW LLC Transformer for OBC EV Charging

    Over-Voltage Protection Clippers, Clampers, Snubbers, DC Restorers

    KYOCERA Releases Shielded Board-to-Board Connectors for Reliable EMI Protection

    Wk 41 Electronics Supply Chain Digest

    Samtec Expands Connector Severe Environment Testing Offering

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Circuit Protection Video
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Inter-Connect Video
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos

    Connector PCB Design Challenges

    Efficient Power Converters: Duty Cycle vs Conduction Losses

    Ripple Steering in Coupled Inductors: SEPIC Case

    SEPIC Converter with Coupled and Uncoupled Inductors

    Coupled Inductors in SEPIC versus Flyback Converters

    Non-Linear MLCC Class II Capacitor Measurements Challenges

    Percolation Phenomenon and Reliability of Molded Power Inductors in DC/DC converters

    Root Causes and Effects of DC Bias and AC in Ceramic Capacitors

    How to Calculate the Output Capacitor for a Switching Power Supply

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Who is Who
  • PCNS
    • PCNS 2025
    • PCNS 2023
    • PCNS 2021
    • PCNS 2019
    • PCNS 2017
  • Events
No Result
View All Result
Passive Components Blog
No Result
View All Result

TDK Releases its Application Guide on Motor/Inverter Circuit Configuration

27.11.2019
Reading Time: 4 mins read
A A

As the electrification of the automotive progresses, the demand for motor generators is on the rise. There is also a trend towards integration of electric motors and inverters, and the requirements with regard to compact dimensions and resistance against heat and vibrations are becoming ever more severe, while high reliability is also an important factor. In some cases, wiring inductance can lead to high surge voltages which requires countermeasures such as suitable wiring design and snubber capacitors. At the same time, noise countermeasures are also essential.

Motor/generator circuit configuration example

Inverter circuits that convert direct current to alternating current are used to drive motors and generators. Such circuits incorporate Insulated-Gate Bipolar Transistors (IGBT) and other semiconductor switches. Recently, Silicon Carbide (SiC) and other high-speed devices are also coming into use, operating at higher frequencies while featuring smaller dimensions. Driving a large electric motor requires voltages of 400 volts and higher. A booster circuit therefore is generally placed in front of the inverter circuit, and a configuration with two semiconductor switches is used to increase efficiency. When the motor is driven, a steep current rise occurs which requires the high-voltage line connecting the booster circuit and the inverter to be stabilized. This task is performed by a capacitor called DC LINK.

RelatedPosts

TDK Releases Hybrid Polymer Aluminum Capacitors with Enhanced Ripple Current Capability

Selection Guide for DC-Link Film Capacitors in Automotive Electric Compressors; KEMET App Note

Tantalum Polymer use in GaN based applications

Figure 1 : Inverter system configuration

Capacitors for DC Link/Snubber Use

The use of high-speed devices such as SiC, Gan etc. is progressing and the dimensions of inverters are shrinking, but this makes it even more important to effectively control noise. Wiring inductance can lead to high surge voltages which requires countermeasures such as suitable wiring design and snubber capacitors.

Figure 2 : TDK capacitor product map
Figure 3 : TDK recommended capacitors

Film Capacitors

Inverter circuit inputs require a stable DC voltage at the input. Because electric motors are driven at low frequencies, a relatively large capacitance is required to absorb ripple components. Film capacitors have high allowable ripple current ratings, making them suitable for achieving stable voltage.

CeraLink® Snubber Circuit Application Example

When an electric motor is driven, a steep current rise occurs. This generates a large ringing voltage which results in noise and can lead to withstand voltage degradation in semiconductor devices. Although CeraLink® are SMD products, they realize high withstand voltage and high capacitance. While harnessing the advantages of the SMD format to optimize the pattern layout, parasitic inductance in the wiring can be kept low. Furthermore, the ESL of the devices themselves is low, which makes it possible to reduce ringing voltage generation.

Figure 4 : CeraLink® snubber circuit application example

Transformers for IGBT/FET Drive

Motor drive inverter circuits and high-power converters use a bridge circuit configuration, which consists of semiconductor switches for the high voltage side and the low voltage side. A stable power supply is required for driving these semiconductor switches. The high side in particular has to be able to handle voltages up to 800 V for electric vehicle motors. A power supply that is insulated from the low side is required, and a compact, transformer with high withstand voltage is used for this purpose. Moreover, since multiple semiconductor switches are used and the gate voltage varies, causing reliability differences between devices, voltage equalization is desirable.

Figure 5 : IGBT FET drive power transformer
Figure 6 : Differences in structure and line up of IGBT FET transformers

Example of IGBT/FET Drive Transformer

IPM (Intelligent Power Modules) are used for high-power inverters, booster circuits, and similar. They are semiconductor components created by combining power devices such as power MOS-FETs or IGBTs with a drive circuit and an integrated self-protection function.
A power supply voltage of 15 V ±10% is required to drive an IPM. Transformers are used to provide insulation from power devices, but poor characteristics of the transformer will degrade voltage stability. The wire material is also crucial in terms of achieving the required insulation reliability. Material that can withstand high temperatures is therefore used. If space and cost are the top considerations, the choice will be an integrated transformer. By contrast, if layout design freedom and voltage stability are given priority, the choice is a distributed transformer.

Figure 7 : Example of IGBT/FET drive transformer

Related

Source: TDK

Recent Posts

High Energy Density Polymer Film Capacitors via Molecular and Interfacial Design

15.10.2025
3

Bourns Releases High Clearance and Creepage 1500VDC Power Transformer

15.10.2025
1

KYOCERA AVX Expands Stacked MLCC Capacitors Offering

14.10.2025
11

YAGEO Unveils Compact 3.6kW LLC Transformer for OBC EV Charging

13.10.2025
109

Over-Voltage Protection Clippers, Clampers, Snubbers, DC Restorers

13.10.2025
15

KYOCERA Releases Shielded Board-to-Board Connectors for Reliable EMI Protection

13.10.2025
19

Silicon Capacitors Market: Shaping the Foundation for Next-Gen Miniaturization Electronics

10.10.2025
33

YAGEO Releases Compact Coupled Inductors for High-Density VR Designs

9.10.2025
21

Enhancing Energy Density in Nanocomposite Dielectric Capacitors

9.10.2025
30

Advances in the Environmental Performance of Polymer Capacitors

8.10.2025
62

Upcoming Events

Oct 15
20:00 - 20:30 CEST

Planar Design & Simulation

Oct 17
12:00 - 14:00 EDT

External Visual Inspection per MIL-STD-883 TM 2009

Oct 20
October 20 - October 23

Digital WE Days 2025 – Virtual Conference

View Calendar

Popular Posts

  • Buck Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Boost Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Flyback Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • LLC Resonant Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • What is a Dielectric Constant and DF of Plastic Materials?

    4 shares
    Share 4 Tweet 0
  • Ripple Current and its Effects on the Performance of Capacitors

    3 shares
    Share 3 Tweet 0
  • SEPIC Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Dual Active Bridge (DAB) Topology Explained

    0 shares
    Share 0 Tweet 0
  • MLCC and Ceramic Capacitors

    0 shares
    Share 0 Tweet 0
  • Flying Capacitors Explained

    0 shares
    Share 0 Tweet 0

Newsletter Subscription

 

Passive Components Blog

© EPCI - Leading Passive Components Educational and Information Site

  • Home
  • Privacy Policy
  • EPCI Membership & Advertisement
  • About

No Result
View All Result
  • Home
  • Knowledge Blog
  • PCNS

© EPCI - Leading Passive Components Educational and Information Site

This website uses cookies. By continuing to use this website you are giving consent to cookies being used. Visit our Privacy and Cookie Policy.
Go to mobile version