Large current Power Choke Coil for automotive use

What is large current Power Choke Coil for automotive use

3 features of Power Choke Coil

  • Large current in compact size as 12mm square SMD type
  • Excellent heat resistance and vibration resistance in compact size
  • SMD type enables automatic mounting on PCBs,
    contributing to customer’s process cost down

Comparison of Panasonic conventional products and PCC-M1280MF series

Large current in compact size as 12mm square SMD type,
contributing to direct mounting on ECU engines and space saving of power supply circuits

Series PCC-M1280MF
Size 12.6×12.8×8.0 mm
* Rated current 20.2 ~ 53.5 A

* DC current which causes temperature rise of 40K. Parts are soldered by reflow on multilayer PWB with high heat dissipation performance. Note: Heat radiation constant are approx. 20 K/W measured.

Monolithic structure image

The metal composite material using unique metal magnetic material and the wired coil using thick copper wire enable gapless monolithic structure by monolithic molding of the magnetic material and the wired coil without gap.
As a result, the coil heat generation is reduced and the coil heat dissipation is increased, and a large current of 20 to 53A is achieved while reducing the volume by half compared to the ferrite type.

Ferrite type
フェライトタイプ,Ferrite type,铁氧体类型 image
panasonic
panasonic image

The monolithic structure by the metal magnetic material enables
more than twice of high heat dissipation

Excellent heat resistance and vibration resistance in compact size,
contributing to direct mounting on ECU engines

  • Heat resistance : 160 °C / 2000 h in SMD type
  • Vibration-resistance : 5 Hz to 2 kHz / 30 G

No abnormal condition in product and solder part as reliability test result

Reliability test items
Items Condition Evaluation time
Thermal Shock -40 °C to +160 °C 2000 cyc.
Vibration 30 G(5 Hz to 2 kHz) XYZ(2 h each)
Heat Resistance 160 °C 2000 h
High Temp. Life 160 °C, DC rated current
Humidity Resistance 85 °C,85% RH 2000 h
Humidity Life 85 °C,85%RH, DC rated current
Cold Resistance -40 °C 2000 h

■Pretreatment condition: after 85±2°C,85%RH,168h, 3 times reflow aging
※Possible to set up vibration/reflow condition etc. according to customer's condition.

Caulking structure
Vibration condition: 5 Hz to 2000 Hz/30 G/xyz / 2 hr. each

Heat resistance of 160°C is achieved by working on the composition of metal composite material. In addition, while the thick copper wire of the coil is drawn out to be used as terminals, an unique structure is adopted by fixing the terminals on the metal composite material body in a caulking structure on the bottom side, thus the vibration resistance is enhanced.

SMD type enables automatic mounting on PCBs, contributing to customer’s process cost down

Sectional view image

Unique terminal structure technology to assure heat capacity as SMD type, with the copper wire of the coil drawn out to be used as terminals

Application

Large capacity and down sizing requirements from function integration in accordance with increasing number of ECUs.

Application requires large capacity, down sizing, high reliability.

  • ELECTRIC PUMP INPUT FILTER
  • ELECTRIC FAN MOTOR INPUT FILTER
  • DIRECT INJECTION INPUT FILTER
  • BREAKING SYSTEM INPUT FILTER
  • EGR INPUT FILTER
  • ELECTRIC COMPRESSOR INPUT FILTER
  • EPS INPUT FILTER
  • BODY ELECTRIC SYSTEM INPUT FILTER

car image

Circuit diagram

Circuit diagram

Line up

▲ : Under development
Series Inductance (*1) DCR 20 °C Rated Current (*2)
PCC-M1280MF
(12.6×12.8×8.0 mm)
▲0.33 μH ± 20% 0.70 mΩ ± 10% 53.5 A
0.68 μH ± 20% 1.10 mΩ ± 10% 42.6 A
1.0 μH ± 20% 1.36 mΩ ± 10% 38.3 A
1.5 μH ± 20% 1.80 mΩ ± 10% 33.3 A
2.5 μH ± 20% 2.60 mΩ ± 10% 27.7 A
3.3 μH ± 20% 3.60 mΩ ± 10% 23.6 A
4.7 μH ± 20% 4.90 mΩ ± 10% 20.2 A

(*1):Measured at 100 kHz.
(*2):DC current which causes temperature rise of 40K. Parts are soldered by reflow on multilayer PWB with high heat dissipation performance. Note: Heat radiation constant are approx. 20 K/W measured.

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