The parameter for thermal resistance given in the specification is described as ( per 1 device). What does it mean?

1 device represents a value per arm (IGBT+FWD). Some models connect multiple chips per arm in parallel. This parallel-chip configuration is counted as one chip.

What factors determine the value of thermal resistance Rth(j-c)?

The thermal resistance value may differ even in the same rating, when comparing different families of products made by Fuji Electric or other companies. A low thermal resistance in a certain product may be due to a larger semiconductor chip size, or the use of a ceramic insulating substrate with good thermal conductivity.

Is the IPM’s input control signal high to switch the IGBT to on?

IPM V-series input control signal is IGBT-on when set at Low. A small IPM’s input control signal is IGBT-on when set at High.

What is a bootstrap circuit?

A bootstrap circuit is one that is composed of a control power supply to drive high-side IGBT. It is possible to have a single power supply as it does not require a transformer with multiple secondary windings. Its built-in bootstrap resistance and bootstrap diode (BSD) gives a small IPM to configure a bootstrap circuit simply […]

V-series IPM has VDA and VDN models of the same rating, but what is the difference between them?

VDA and VDN use different material for their insulating substrates, resulting in separate thermal resistance values. The VDA type uses aluminum oxide, while the VDN type uses high heat-radiation material, with approximately 30% less thermal resistance than that of VDA. It is effective when achieving a lower Tj max. or longer ΔTj power cycle life […]

What is a press-fit pin?

It is a pin type that allows PCB mounting without soldering. It is used in PIM and 6-Pack products. The time required for the assembly process is reduced as connection is completed by pressing an IGBT module over PCB’s through-hole and applying pressure from the base side. Special press and press-in tools are required. We […]

What type of compatible female terminal (tab terminal) should we choose for a standard package control terminal?

The compatible tab is the 110 series. Please select a tab terminal which has the tab dimensions of 2.8 mm width, and 0.5 mm plate thickness. Relevant products are available on the market from Tyco Electronics Japan G.K., J.S.T. MFG. CO., LTD., and NICHIFU Co., Ltd. Please contact any of these companies for details.

Is there any recommended connector for IPM’s control terminal?

Connectors compatible with V-IPM series terminal shapes (by HIROSE ELECTRIC CO., LTD.) are on the market. P630: MA49-19S-2.54DSA, MA49-19S-2.54DSA(01)P631: MDF7-25S-2.54DSAPlease contact HIROSE ELECTRIC CO., LTD. to purchase the relevant connector or verify reliability.

Is there an upper limit of switching frequency for an IGBT?

The switching frequency (carrier frequency) is not defined in specifications. A higher frequency will increase the switching loss, leading to a problem with the junction temperature. The device will be operable under the absolute maximum rated temperature; a frequency of 15 kHz or less should be used for V-series IGBT module. For a welding device […]

What is an insulated substrate?

The insulated substrate consists of a ceramic substrate, front-surface copper-foil pattern to create a circuit, and back-surface copper-foil to solder with a copper base. It is designed to electrically insulate between the electric part and the part for thermal dissipation. The ceramic substrate materials used are aluminum oxide, aluminum nitride, silicon nitride, etc.