BD7791KVT ROHM Co. Ltd., BD7791KVT Datasheet - Page 3

• Manufacturer Part Number: BD7791KVT
• Description: Pwm Driver For Combi Drive
• Manufacturer: ROHM Co. Ltd.

The external constants concerning CH1,2 are values optimized in case 4Ω+47μH is assumed as a load, and those concerning CH3
are values optimized in case 4Ω+10μH is assumed as a load.
○Block diagram / Application circuit
5V
0.047μ F
0.033μ F
0.033μ F
0.1μ F
0.1μ F
10kΩ
10kΩ
10kΩ
GVSW
TEST1
TEST2
TEST3
CNF1
CNF2
CNF3
CNF4
CNF5
CTL1
CTL2
100kΩ
INSP
270Ω
270Ω
150Ω
Vref
IN1
IN2
IN3
IN6
IN4
IN5
FG
STBY/BMSW
GVSW
LIMIT
OSC
OSC
DETECTER
BEMF
Logic
Logic
Logic
Logic
Logic
Logic
REV. A
T.S.D.
Logic
OSC
driver
driver
driver
driver
driver
driver
NF amp
NF amp
NF amp
NF amp
NF amp
NF amp
Pre
Pre
Pre
Pre
Pre
Pre
driver
Pre
POWER
POWER
POWER
POWER
POWER
POWER
MOS
MOS
MOS
MOS
MOS
MOS
POWER
MOS
PVcc1
VO1F
VO1R
VO2F
VO2R
VO3F
VO3R
VO6F
VO6R
PGND1
PVcc3
VO4F
VO4R
VO5F
VO5R
PGND3
COUT
CCOM
COM
PVcc21
PVcc22
U
V
W
RNF1
RNF2
Vcc
GND
RNF=0.2Ω
22μ F
M
5V
5V
5V
5V
3/3