BD7791KVT ROHM Co. Ltd., BD7791KVT Datasheet - Page 2

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

Please supply the middle level voltage for CTL2 when using it in the mode of CTL1=L and CTL2=M.
Spindle gain mode
Stepping
CH1,2 gain mode
Actuator
Loading
Spindle
current
Others
Circuit
○Electrical characteristics
driver
driver
driver
driver
○Package outlines
block
block
block
block
CTL1
H
L
GVSW
(Unless otherwise noted Ta=25℃, Vcc=PVcc=5V, Vref=1.25V, RL(ACT,STP,LOAD)=8Ω+47μH, RL(SP)=2Ω+47μH, RNF=0.2Ω,
Quiescent current
Current in standby mode
Input dead zone (one side)
Output offset voltage
Voltage gain 1 (CH1,2,3)
Voltage gain 2 (CH1,2)
Output On resistor（top and bottom）
PWM frequency
Input dead zone (one side)
Output offset voltage
Voltage gain
Output On resistor（top and bottom）
PWM frequency
Input dead zone (one side)
Output offset voltage
Voltage gain
Output On resistor（top and bottom）
PWM frequency
Input dead zone of gm1(one side)
Input dead zone of gm2(one side)
Input dead zone of gm3(one side)
Input output gain 1
Input output gain 2
Input output gain 3
Output On resistor（top and bottom）
Output limit voltage
PWM frequency
Vref drop mute ON threshold voltage
Vcc drop mute ON threshold voltage
CTL1 L voltage
CTL1 H voltage
CTL2, GVSW L voltage
CTL2, GVSW M(Hi-z) voltage
CTL2, GVSW H voltage
M（Hi-z）
Parameter
CTL2
M
H
H
L
L
gm1
L
Reverse brake
Brake mode
Short brake
GVC1_1,2
―
M（Hi-z）
CTL1,2=3.3V, GVSW=0V, VIN1,2,3,4,5,6=OPEN, VCOM=OPEN, VCCOM=OPEN, VCOUT=OPEN)
gm2
VCTL2M, VGVM
SPINDLE Output
VCTL2H, VGVH
VCTL2L, VGVL
BD7791
VDZACT1,2,3
GVC1_1,2,3
GVC2_1,2
VOO1,2,3
RON1,2,3
f1,2,3CH
VDZSP1
VDZSP2
VDZSP3
VMVccD
VCTL1H
VLIMSP
VCTL1L
VOO4,5
GVC4,5
RON4,5
RONSP
ACTIVE
ACTIVE
ACTIVE
ACTIVE
VDZ4,5
Symbol
VMVref
f4,5CH
VOO6
GVC6
RON6
VDZ6
f6CH
gm1
gm2
gm3
Hi-Z
Hi-Z
ICC
IST
fSP
GVC2_1,2
REV. A
gm3
H
MIN.
CH1,2,3 Output
15.5
15.5
15.5
0.88
0.28
0.17
0.18
215
215
215
-50
-50
-50
3.2
2.0
1.6
2.6
10
10
20
10
－
－
－
－
－
－
－
－
－
2
6
0
0
ACTIVE
ACTIVE
Hi-Z
Hi-Z
Hi-Z
Hi-Z
TYP.
17.5
17.5
17.5
0.36
0.22
0.22
310
310
310
150
167
1.2
1.6
1.8
1.1
0.6
0.7
3.6
12
30
60
30
－
－
－
－
－
90
－
－
－
－
－
8
MAX.
19.5
19.5
1.32
19.5
0.44
0.27
0.26
405
405
100
405
100
300
500
0.2
1.8
2.4
2.7
1.4
1.0
4.0
1.0
3.3
1.0
2.0
3.3
20
50
14
50
50
50
－
3
CH4,5 Output
(UNIT : mm)
ACTIVE
ACTIVE
ACTIVE
Hi-Z
Hi-Z
Hi-Z
Unit
kHz
kHz
kHz
kHz
mA
mA
mV
mV
mV
mV
mV
mV
mV
mV
mV
A/V
A/V
A/V
dB
dB
dB
dB
Ω
Ω
Ω
Ω
V
V
V
V
V
V
V
V
CTL1,2=H
CTL1,2=L
Voltage gain 1, 2
External input resistor 10kΩ
External input resistor 10kΩ, GVSW=H
Io=500mA
Voltage gain 1, 2
Io=500mA
CTL1=H, CTL2=L
CTL1=H, CTL2=L
CTL1=H, CTL2=L
Io=500mA, CTL1=H, CTL2=L
CTL1=H, CTL2=L
GVSW=M
GVSW=M
GVSW=H
Io=500mA
OPEN（Hi-z）is also available.
GVSW=H
CH6 Output
ACTIVE
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Condition
2/3