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- No.28(Mar.1999 issue)(PDF format,70KBytes)
- This issue presents power diodes for protection of electronics in automotive products.
- No.27(Feb.1999 issue)(PDF format,43KBytes)
- This issue presents line up of 5W class surge suppressor diodes for automotive products.
- No.26(Jan.1999 issue)(PDF format,56.5KBytes)
- IGBT gate voltage waveforms(3)
This issue presents an example of gate voltage waveform observation under the influence of emitter common inductance Lee and module internal gate resistance rg.
- No.25(Dec.1998 issue)(PDF format,31KBytes)
- IGBT gate voltage waveforms(2)
This issue present the gate voltage waveformat IGBT switching in the mode where the main power supply voltage is not applied.
And iufluence of the IGBT module internal structure on the gate voltage waveform.
- No.24(Nov.1998 issue)(PDF format,20.5KBytes)
- IGBT gate voltage waveform
We will present several behaviors appearing on the IGBT gate voltage waveforms.
This issue present the gate voltage waveforms at IGBT switching in the ordinary voltage applying mode.
- No.23(Oct.1998 issue)(PDF format,109KBytes)
- Hitachi motor driver IC line up
Presentation for single chip inverter IC suitable for motors with up to 150W, and pre-driver IC for motors with up to 2.2KW.
- No.22(Sept.1998 issue)(PDF format,19KBytes)
- Driving method for High-voltage ICs
Explanation for driving the upper arm devices.(As for the bootstrap and charge pump circuit)
- No.21(Aug.1998 issue)(PDF format,28.5KBytes)
- Application of Hitachi high-voltage ICs for motor drive.
Explanation for the variable speed control of motor for home appliance with a built-in inverter, and application of Hitachi high-voltage ICs for motor drive.
- No.20(Jul.1998 issue)(PDF format,31.5KBytes)
- Overview of Hitachi's high voltage ICs
Explanation for the features of Hitachi high voltage ICs.
- No.19(Jun.1998 issue)(PDF format,13KBytes)
- How to handle IGBT modules(2)
Explanation for how to handle IGBT terminals etc.
- No.18(May.1998 issue)(PDF format,34.5KBytes)
- How to handle IGBT modules(1)
Explanation for installing a IGBT module on a cooling fin
- No.17(Apr.1998 issue)(PDF format,31KBytes)
- Parallel connections of the IGBT(2)
Explanation for the main circuit wiring IGBTs.
- No.16(Mar.1998 issue)(PDF format,39KBytes)
- Parallel connections of the IGBT(1)
Explanation for precaution in use at the parallel connections of the IGBT.
- No.15(Feb.1998 issue)(PDF format,25KBytes)
- Table of contents for rectification circuit.
Explanation for various contents of rectification circuit.
- No.14(Jan.1998 issue)(PDF format,45KBytes)
- Products Trend of Power Semiconductor Devices
Presentation for the products trend of power devices and some of our new products.
- No.13(Dec.1997 issue)(PDF format,21.5KBytes)
- IGBT's Dead Time (4)
A typical varification of dead time.
- No.12(Nov.1997 issue)(PDF format,29KBytes)
- IGBT's Dead Time (3)
Explanation for the effect of collector current and junction
temperature on switching delay time.
- No.11(Oct.1997 issue)(PDF format,44KBytes)
- IGBT's Dead Time(2)
Explanation for the switching waveforms and equations for
calculating delay times of IGBTs.
- No.10(Sept.1997 issue)(PDF format,15KBytes)
- IGBT's Dead Time (1)
Explanation for the relationship between the dead time of logic
and that of IGBT device.
- No.09(Aug.1997 issue)(PDF format,126KBytes)
- Ringing Phenomenon at The Diode Recovers
Explanation for the ringing phenomenon which is likely to occur
when there is a small current and a small conduction width at
the combination with IGBTs.
- No.08(Aug.1997 issue)(PDF format,25KBytes)
- How Surge Voltage Occurs of Diode
Explanation for the equations of how surge voltage occures at
the device recovers
- No.07(Jun.1997 issue)(PDF format,35.5KBytes)
- Snubber Circuit of IGBT
1)How to sellect the snubber circuit constants for each IGBT current class.
2)How surge voltage occures when the switch is opend and closed in a rectifier circuit.
- No.06(May.1997 issue)(PDF format,47KBytes)
- Snubber circuit of IGBT
Explanation for the snubber circuit functions by waveform.
- No.05(Apr.1997 issue)(PDF format,151KBytes)
- Presentation of New Products
Low noise IGBT sereis and high-speed type surface mount package diodes.
- No.04(Apr.1997 issue)(PDF format,504KBytes)
- Presentation of New Products
IGBTs for a chopper circuit and motor driver ICs.
- No.03(Feb.1997 issue)(PDF format,32.5KBytes)
- How To Select The Diode
Explanation for the diode sellection procedure for general rectifying circuit.
- No.02(Jan.1997 issue)(PDF format,44.5KBytes)
- Power Dissipation Calculation Method for IGBT
Explanation for the general power dissipation calculation method including free-wheeling diode loss for the case where the IGBT is used in an inverter circuit.
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