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DIPIPM+ Series Application note
Note for the previous application circuit:
(1)
If control GND is connected with power GND by common broad pattern, it may cause malfunction by power GND fluctuation. It
is recommended to connect control GND and power GND at only a point N1 (near the terminal of shunt resistor).
(2)
It is recommended to insert a Zener diode D1(24V/1W) between each pair of control supply terminals to prevent surge
destruction.
To prevent surge destruction, the wiring between the smoothing capacitor and the P, N1 terminals should be as short as
(3)
possible. Generally a 0.1-0.22μF snubber capacitor C3 between the P-N1 terminals is recommended.
(4)
R1, C4 of RC filter for preventing protection circuit malfunction is recommended to select tight tolerance, temp-compensated
type. The time constant R1C4 should be set so that SC current is shut down within 2μs. (1.5μs~2μs is recommended
generally.) SC interrupting time might vary with the wiring pattern, so the enough evaluation on the real system is necessary.
To prevent malfunction, the wiring of A, B, C should be as short as possible.
(5)
The point D at which the wiring to CIN filter is divided should be near the terminal of shunt resistor. NU, NV, NW terminals
(6)
should be connected each other at near those three terminals when it is used by one shunt operation. Low inductance SMD
type with tight tolerance, temp-compensated type is recommended for shunt resistor.
All capacitors should be mounted as close to the terminals as possible. (C1: good temperature, frequency characteristic
(7)
electrolytic type and C2:0.01μ-2μF, good temperature, frequency and DC bias characteristic ceramic type are recommended.)
(8)
Input logic is High-active. There is a 3.3kΩ(min.) pull-down resistor in the input circuit of IC. To prevent malfunction, the input
wiring should be as short as possible. When using RC coupling, make the input signal level meet the turn-on and turn-off
threshold voltage.
Fo output is open drain type. Fo output will be max 0.95V(@I
(9)
supply (e.g. 5V,15V) by a resistor that makes I
driving opto coupler by Fo output, please refer the application note of this series.
(10)
Fo pulse width can be set by the capacitor connected to CFO terminal. C
(11)
If high frequency noise superimposed to the control supply line, IC malfunction might happen and cause DIPIPM erroneous
operation. To avoid such problem, line ripple voltage should meet dV/dt ≤+/-1V/μs, Vripple ≤ 2Vp-p.
For DIPIPM, it isn't recommended to drive same load by parallel connection with other phase IGBT or other DIPIPM.
(12)
(13)
No.4 and No.25 V
terminals (GND terminal for control supply) are connected mutually inside of DIPIPM+ and also No.6 and
NC
No.16 V
terminals are connected mutually inside, please connect either No.4 or No.25 terminal to GND and also connect
P1
either No.6 or No.16 terminal to supply and make the unused terminal leave no connection.
Publication Date: September 2016
=1mA,25°C), so it should be pulled up to MCU or control power
FO
up to 1mA. (In the case of pulled up to 5V, 10kΩ is recommended.) About
FO
(F) = 9.1 x 10
FO
31
-6
x t
(Required Fo pulse width).
FO
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