Fuji Electric Co., Ltd.
2-4
MT6M12343 Rev.1.0
Dec.-2016
Chapter 2
Description of Terminal Symbols and Terminology
Item
Symbol
Description
Input current
I
IN
Current flowing between signal input IN(HU,HV,HW,LU,LV,LW) and COM.
Input pull-down resistance
R
IN
Input resistance of resistor in input terminals IN(HU,HV,HW,LU,LV,LW).
They are inserted between each input terminal and COM.
Fault output voltage
V
FO(H)
Output voltage level of VFO terminal under the normal operation (The lower side arm
protection function is not actuated.) with pull-up resistor 10k
W.
V
FO(L)
Output voltage level of VFO terminal after the lower side arm protection function is
actuated.
Fault output pulse width
t
FO
Period in which an fault status continues to be output (
V
FO
) from the VFO terminal
after the lower side arm protection function is actuated. Refer chapter 3 section 6.
Over current protection
voltage level
V
IS(ref)
Threshold voltage of IS terminal at the over current protection.
Refer chapter 3 section 5.
Over Current Protection
Trip delay time
t
d(IS)
The time from the Over current protection triggered until the collector current
becomes 50% of the rating. Refer chapter 3 section 5.
Output Voltage of
temperature sensor
V
(temp)
The output voltage of temp. It is applied to the temperature sensor output model.
Refer chapter 3 section 7.
Overheating protection
temperature
T
OH
Tripping temperature of over heating. The temperature is observed by LVIC.
All low side IGBTs are shut down when the LVIC temperature exceeds overheating
threshold. See Fig.2-2 and refer chapter 3 section 8.
Overheating protection
hysteresis
T
OH(hys)
Hysteresis temperature required for output stop resetting after protection operation.
See Fig.2-2 and refer chapter 3 section 8.
T
OH
and
T
OH(hys)
are applied to the overheating protection model.
Vcc Under voltage trip level of
Low-side
V
CCL(OFF)
Tripping voltage of the Low-side control IC power supply.
All low side IGBTs are shut down when the voltage of V
CCL
drops below this threshold.
Refer chapter 3 section 1.
Vcc Under voltage reset level
of Low-side
V
CCL(ON)
Resetting threshold voltage from under voltage trip status of
V
CCL.
Refer chapter 3 section 1.
Vcc Under voltage hysteresis
of Low-side
V
CCL(hys)
Hysteresis voltage between
V
CCL(OFF)
and
V
CCL(ON)
.
Vcc Under voltage trip level of
High-side
V
CCH(OFF)
Tripping voltage of High-side control IC power supply.
The IGBTs of high-side are shut down when the voltage of
V
CCH
drops below this
threshold. Refer chapter 3 section 1.
Vcc Under voltage reset level
of High-side
V
CCH(ON)
Resetting threshold voltage from under voltage trip status of
V
CCH.
See Fig.3-3
Resetting voltage at which the IGBT performs shut down when the High-side control
power supply voltage
V
CCH
drops. Refer chapter 3 section 1.
Vcc Under voltage hysteresis
of High-side
V
CCH(hys)
Hysteresis voltage between V
CCH(OFF)
and V
CCH(ON)
.
VB Under voltage trip level
V
B(OFF)
Tripping voltage in under voltage of VB(*). The IGBTs of high-side are shut down
when the voltage of VB(*) drops below this threshold. Refer chapter 3 section 2.
VB Under voltage reset level
V
B(ON)
Resetting voltage at which the IGBT performs shut down when the upper side arm
IGBT bias voltage VB(*) drops. Refer chapter 3 section 2.
VB Under voltage hysteresis
V
B(hys)
Hysteresis voltage between V
B(OFF)
and V
B(ON)
.
(2) Control circuit block (Continued)
Table 2-2 Description of Terminology
