IC-SP-06027 R1
Table 4-2. List of pins and their functions (pins common to all models)
No.
7
Pin
Item
CR PWM frequency
VTR setting pin
(VSP-input type)
Clock frequency
setting pin
(6-input type)
<Continued>
Remarks
Functions and Precautions
Related items
•
Externally connected resistors and
•
5-5. (1) PWM operation
capacitors are used to determine the
frequency of the PWM (internal clock).
•
Frequencies are roughly determined by
the following equation:
f
≅
0.494/(C X R) (Hz)
note 1)
Input resistor value
typ.50Ω
VTR
VB
+
-
•
typ.300Ω
ECN30102
ECN30107
ECN30206
ECN30207
ECN30611
ECN30603
ECN30604
•
typ.150Ω
ECN30105
ECN30204
ECN30601
High-voltage
pin
CR
C
VB
L
Input
resistor
(note 1)
(Internal clock)
VSAWH(typ. 5.4V)
VSAWL(typ. 2.1V)
Switch selection by
comparator output
H
Equivalent Circuit
8
MU
MV
MW
RS
Inverter output pin
9
Input pin for over
current detection
signals
•
It is an output of a three-phase bridge
consisting of six IGBTs and free wheel
diodes.
•
Monitors the voltage of the Rs shunt
•
5-1. (2) Current limitation
resistor and detects its over current
status.
note 1)
Input resistor value
typ.
200kΩ
VB
typ. 220kΩ
typ.
5pF
RS
Input
resistor
(note 1)
-
+
Vref
S
Latch
R
•
typ.300Ω
ECN30102
ECN30107
ECN30206
ECN30207
ECN30611
ECN30603
ECN30604
•
typ.150Ω
ECN30105
ECN30204
ECN30601
Interlock clock trigger
Equivalent Circuit
-
10
-