M81721FP Mitsumi Electronics, Corp., M81721FP Datasheet - Page 8

• Manufacturer Part Number: M81721FP
• Description: 600v High Voltage Half Bridge Driver
• Manufacturer: Mitsumi Electronics, Corp.

6. HIGH SIDE V
Note1 : Delay times between input and output signals are not shown in the figure above.
7. POWER START-UP SEQUENCE
When V
supply UV filter time, the output of the high side is locked. As soon as the V
reset voltage, the output will respond to the following active HIN signal.
At power supply start-up the following sequence is recommended when bootstrap supply topology is used.
Note : If two power supply are used for supplying
Note :
Note :
(1). Apply V
(2). Make sure that FO is at high level.
(3). Set LIN to high level and HIN to low
(4). Set LIN to low level.
V
to set V
level so that bootstrap capacitor could
be charged.
CC
HOUT
LOUT
BS
and V
V
HIN
LIN
BS
CC
supply voltage drops below the V
BS
BS
first and then set V
CC
V
individually, it is recommended
BS
.
SUPPLY UNDER VOLTAGE LOCKOUT SEQUENCE
uvr
BS
.
BS
supply UV trip voltage and the duration in this status exceeds the V
V
BS
uvt
8
LOUT
V
HIN
LIN
FO
CC
V
600V HIGH VOLTAGE HALF BRIDGE DRIVER
BS
V
supply UV filter time
BS
MITSUBISHI SEMICONDUCTORS <HVIC>
BS
uvr
supply voltage rises above the V
V
hysteresis voltage
BS
supply UV
M81721FP
BS
supply UV
Aug. 2009
BS