BD7791FUV Datasheet, PDF (3/4 Pages) Rohm – Silicon Monolithic Integrated Circuit

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○Block diagram / Application circuit
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.
10kΩ _IN1
270Ω
0.1μ F _CNF1
10kΩ
IN2
270Ω
0.1μ F _CNF2
10kΩ
IN3
150Ω
0.047μ F _CNF3
IN6
IN4
0.033μ F _CNF4
IN5
0.033μ F _CNF5
5V
100kΩ
FG
INSP
LIMIT
GVSW
CTL1
CTL2
TEST1
TEST2
TEST3
Vref
GVSW
STBY/BMSW
Logic
Pre
driver
NF amp
Logic
Pre
driver
NF amp
Logic
Pre
driver
OSC
NF amp
Logic
Pre
driver
NF amp
Logic
Pre
driver
NF amp
Logic
Pre
driver
OSC
NF amp
POWER
MOS
POWER
MOS
POWER
MOS
POWER
MOS
POWER
MOS
POWER
MOS
OSC
BEMF
DETECTER
Logic
Pre
driver
POWER
MOS
T.S.D.
PVcc1
VO1F
5V
VO1R
VO2F
VO2R
VO3F
VO3R
VO6F
VO6R
PGND1
PVcc3
VO4F
5V
M
VO4R
VO5F
VO5R
PGND3
COUT
CCOM
COM
PVcc21
PVcc22
U
5V
V
W
RNF1
RNF2
RNF=0.2Ω
Vcc
22μ F
5V
GND
REV. A