DRV3202-Q1_15 Datasheet, PDF (13/39 Pages) Texas Instruments – 3-Phase Brushless Motor Driver

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CAN
CAN_OC
FAULT_OC
RES
Split Control
CANH_OC
CANL_OC
TX_Drive
CAN SPLIT
DRV3202-Q1
SLVSBJ4A – OCTOBER 2012 – REVISED DECEMBER 2012
CAN_PW
VCCT
R = 0~5 , C = 10 µF
(Optional)
CAN_RX
CAN_H
CAN_L
S_GND
CAN_TX
CAN_M
Figure 8. CAN Block Diagram
Description
The CAN data from CAN control logic is transmitted to other systems through the CAN bus. The receiver
compares the CAN_H–CAN_L voltage levels against an internally generated reference and the result is output
through CAN_TX. It has overcurrent protection, shown in Figure 12.
CAN ELECTRICAL CHARACTERISTICS
VB = 12 V, T_A = –40°C to 125°C (unless otherwise specified)
PARAMETER
CONDITIONS
CAN (TRANSMITTER SECTION)
VCAN_H
VCAN_L
VDIFF =
(VCAN_H – VCAN_L)
Bus voltage recessive
Differential output voltage
CAN_TX = V_CC, I_CANH = I_CANL = 0,
see Figure 9
VCAN_H
VCAN_L
Bus voltage recessive 2
Bus voltage recessive 2
CAN_TX = VCCRL = 60 Ω between CAN_H
and CAN_L, see Figure 9 and Figure 10
VCANH_D
VCANL_D
Dominant state CAN_H output voltage
Dominant state CAN_L output voltage
CAN_TX = 0 V, R_L = 60 Ω between CAN_H
and CAN_L, see Figure 9
VDIFF =
(VCANH_D – VCANL_D)
Differential output voltage
CAN_TX = 0 V, R_L = 60 Ω between CAN_H
and CAN_L
IA_CANH
CAN_H short circuit threshold current
CAN_TX = 0 V
IA_CANL
CAN_L short circuit threshold current
CAN_TX = 0 V
t_OVCAN
Overcurrent to output switch-off delay
T_RESCAN
Self recovery time
CAN (RECEIVER SECTION)
Refer to Figure 12
Refer to Figure 12
V_DOM
Differential input voltage for dominant
state
(VDIFF = VCAN_H – VCAN_L)
VCAN_L = –12 V to 12 V, CAN_TX = V_CC
V_REC
Differential input voltage for recessive
state
(VDIFF = VCAN_H – VCAN_L)
VCAN_L = –12 V to 12 V, CAN_TX = V_CC
V_hys
V_com = (VCAN_H -
VCAN_L) / 2
Differential input hysteresis
Input common mode voltage range
MIN TYP MAX UNITS
2 2.5
2 2.5
3
V
3
V
–500
0
50 mV
2.25 2.5 2.75
V
2.25 2.5 2.75
V
2.75 3.5
4.5
V
0.5 1.5 2.25
V
1.5
2
3
V
70
–
160
mA
70
–
160
mA
200
ns
8 25
50
µs
900
mV
500 mV
80 150
–12
–
– mV
12
V
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