DRV8307_15 Datasheet, PDF (8/34 Pages) Texas Instruments – DRV8307 Brushless DC Motor Controller

DRV8307
SLVSCK2 – APRIL 2014
Electrical Characteristics (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V_FETOCP
Voltage limit across each external FET’s
drain
t_FETOCP
V_UVLO
Deglitch time for V_FETOCP to trigger
VM undervoltage lockout
VM rising
VM falling
V_OVLO
t_RETRY
T_TSD
t_LOCK
V_CPFAIL
VM overvoltage lockout
Fault retry time after RLOCK or OTS
Thermal shutdown die temperature
Locked rotor detect time
VCP failure threshold
VM rising
7.6 Typical Characteristics
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MIN
TYP
MAX UNIT
850
1000
1200 mV
5
8
7.8
32
34
5
150
160
3
VM + 3.0
µs
V
36 V
s
°C
s
V
6
5
4
3
2
1
0
±1
0
50
100
Current (mA)
800
600
400
200
0
150
0
50
100
150
200
250
300
C001
Series Resistance (Ÿ)
C001
With the CSD88537ND FETs, a series resistor was added to the
high-side gate drive, and the V_GS rise time was measured.
Figure 1. VREG Load Capability
Figure 2. FET Turn-On Time vs Series Resistance
8
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