Chemi-Con Onboard Charger (OBC) Applications

Proposal 1

Proposal 1 includes SV ceramic varistors.

It is essential to protect circuits from surges and noise voltage induced by lightning surges and equipment failures from outside the circuits, which cause failures and malfunctions. The SV series varistors are non-linear elements with a zinc oxide (ZnO) main component and offer the characteristic that the resistance drops sharply when a specific voltage is exceeded and a large current flows. This design absorbs surges and minimizes abnormal voltage to protect circuits effectively.

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Similar Series: V

Proposal 2

Proposal 2 includes DM normal mode coils.

The DM coil series serves as a step-up coil for the PFC (continuous current mode) of OBC applications. The high flux core features high magnetic density and low core loss. The toroidal dust core has a gap structure, so the magnetic flux leakage is smaller and the impact on adjacent parts can be reduced. The higher Curie Temperature of the material offers stable characteristics even in high-temperature conditions for in-vehicle applications.

Proposal 3

Proposal 3 includes a variety of capacitors and capacitor modules.

The LVA series features a vibration-resistant structure to avoid a disconnect inside the structure at the end-of-life of snap-in aluminum capacitors. The series is ideal for rectifiers in OBC applications. The LVA capacitors enable designers to save space on PCBs because of the higher capacitance per piece. The LVA lineup includes several capacitance values and three endurance categories: 2000, 3000, and 5000 hours at +105°C.

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Similar Series: KVA and KVB

The KXQ modules offer high capacitance and long life and incorporate the latest foil technology. The series is ideal for main circuit smoothing applications of OBCs. Compared with conventional products, it is possible to significantly lower the number of pieces.

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Similar Series: KXJ

Several AECs can be integrated into a capacitor module to save design and manufacturing time. Chemi-Con offers optimal capacitor module solutions that meet the varied needs of onboard equipment, such as solutions for the higher ripple current that affects factors of heat rise and the life of AECs.

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Proposal 4

Proposal 4 includes FW common mode coils.

The FW series is ideal for AC/DC noise filters in OBCs. An iron-based nanocrystalline alloy is used for the high magnetic permeability core (31,000µ). This construction enables high inductance with a small number of turns, which, in turn, suppresses stray capacitance and obtains a high noise suppression effect over a wide frequency range. For AC applications, there are three categories: single-phase, three-phase, and three-phase/four wires.

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Similar Series: FL-V