< Dual-In-Line Package Intelligent Power Module >
Series Application note
Publication Date: September 2016
24
Table 2-3-2 Detailed description of input and output terminals
Item
Symbol
Description
P-side drive
supply
positive terminal
P-side drive
supply
GND terminal
V
UFB
- V
UFS
V
VFB
- V
VFS
V
WFB
- V
WFS
•
Drive supply terminals for P-side IGBTs.
•
By mounting bootstrap capacitor, individual isolated power supplies are not
needed for the P-side IGBT drive. Each bootstrap capacitor is charged by
the N-side V
D
supply when potential of output terminal is almost GND level.
•
Abnormal operation might happen if the V
D
supply is not aptly stabilized or
has insufficient current capability due to ripple or surge. In order to prevent
malfunction, a bypass capacitor with favorable frequency and temperature
characteristics should be mounted very closely to each pair of these
terminals.
•
Inserting a Zener diode (24V/1W) between each pair of control supply
terminals is helpful to prevent control IC from surge destruction.
P-side control
supply terminal
N-side control
supply terminal
V
P1
V
N1
•
Control supply terminals for the built-in HVIC and LVIC.
•
V
P1
, and V
N1
should be connected externally on PCB. In order to prevent
malfunction caused by noise and ripple in the supply voltage, a bypass
capacitor with good frequency characteristics should be mounted very close
to these terminals.
•
Please design the supply carefully so that the voltage ripple caused by
operation keep within the specification. (dV/dt
≤
+/-1V/
μs, Vripple
≤
2Vp-p)
•
It is recommended to insert a Zener diode (24V/1W) between each pair of
control supply terminals to prevent surge destruction.
N-side control
GND terminal
V
NC
•
Control ground terminal for the built-in HVIC and LVIC.
•
Please make sure that line current of the power circuit does not flow
through this terminal in order to avoid noise influences.
Control input
terminal
U
P
,V
P
,W
P
U
N
,V
N
,W
N
AlN
•
Control signal input terminals. This is Voltage input type.
•
These terminals are internally connected to Schmitt trigger circuit and pulled
down by min
3.3k
Ω
resistor internally
•
The wiring of each input should be as short as possible to protect the
DIPIPM from noise interference.
•
Please use RC coupling in case of signal oscillation. Pay attention to
threshold voltage of input terminal, because input circuit has pull down
resistor.
Short-circuit trip
voltage detecting
terminal
CIN
•
For short circuit protection, input the potential of external shuint resistor to
CIN terminal through RC filter (for the noise immunity).
•
The time constant of RC filter is recommended to b
e up to 2μs.
Fault signal
output terminal
F
O
•
Fault signal output terminal for N-side abnormal state(SC or UV).
•
This output is open drain type. It is recommended to pull up F
O
signal line to
the 5V supply by 10k
Ω when Fo signal is input to MCU directly (Check
whether the V
FO
satisies the threshold level of input of MCU when selecting
resistance).
•
In the case of directly driving opto coupler by Fo output it is needed to set
the pull-up resistance so that I
FO
becomes under 5mA(maximum rating).
And pulled up to 15V supply is recommended.(V
FO
increases in propotion to
increasing I
FO.
)
Fault pulse output
width setting
terminal
C
FO
•
The terminal is for setting the fault pulse output width.
•
An external capacitor should be connected between this terminal and V
NC
.
When 22nF capacitor is connected, then the Fo pulse width becomes
2.4ms. Because of C
FO
= t
FO
x 9.1 x 10
-6
(F)
Temperature
output terminal
V
OT
•
LVIC temperature is ouput by analog signal. It is ouput of OP amplifer
internally.
•
It is recommended to connect 5.1k
Ω pulldown resistor if output linearlity is
necessary under room temperature.
Inverter DC-link
positive terminal
P
•
DC-link positive power supply terminal.
•
Internally connected to the collectors of all P-side IGBTs.
•
To suppress surge voltage caused by DC-link wiring or PCB pattern
inductance, smoothing capacitor should be inserted very closely to the P
terminal. It is also effective to add small film capacitor with good frequency
characteristics for snubber.
