PS21964-4A Mitsumi Electronics, Corp., PS21964-4A Datasheet - Page 9

• Manufacturer Part Number: PS21964-4A
• Manufacturer: Mitsumi Electronics, Corp.

[C] Under-Voltage Protection (Upper-side, UV
Fig. 9 RECOMMENDED MCU I/O INTERFACE CIRCUIT
Fig. 10 WIRING CONNECTION OF SHUNT RESISTOR
c1. Control supply voltage rising : After the voltage level reaches UV
c2. Normal operation : IGBT ON and carrying current.
c3. Under voltage trip (UV
c4. IGBT OFF in spite of control input signal level, but there is no F
c5. Under voltage reset (UV
c6. Normal operation : IGBT ON and carrying current.
Control input
Protection circuit state
Control supply voltage V
Output current Ic
Error output Fo
Note : The setting of RC coupling at each input (parts shown dotted) depends on the PWM control scheme and the
wiring impedance of the printed circuit board.
The DIP-IPM input section integrates a 3.3kΩ (min) pull-down resistor. Therefore, when using an external
filtering resistor, pay attention to the turn-on threshold voltage.
DBt
V
NC
DBr
).
).
DB
DIP-IPM
MCU
High-level (no fault output)
UV
DBr
c1
RESET
N
DB
)
5V line
Wiring inductance should be less than 10nH.
UV
10kΩ
DBt
c2
Shunt resistor
O
9
DBr
signal outputs.
SET
, the circuits start to operate when next input is applied.
c3
Equivalent to the inductance of a copper
pattern in dimension of width=3mm,
thickness=100µm, length=17mm
c4
U
V
Fo
NC
P
RESET
,V
(Logic)
DIP-IPM
P
Please make the GND wiring connection
of shunt resistor to the V
as close as possible.
,W
c5
P
PS21964-4/-4A/-4C/-4W
,U
N
,V
3.3kΩ (min)
N
,W
N
c6
TRANSFER-MOLD TYPE
NC
terminal
INSULATED TYPE
Aug. 2007