DRV8848_15 Datasheet, PDF (6/28 Pages) Texas Instruments – DRV8848 Dual H-Bridge Motor Driver

DRV8848
SLLSEL7 – OCTOBER 2014
Electrical Characteristics (continued)
T_A = 25°C, over recommended operating conditions unless otherwise noted
PARAMETER
TEST CONDITIONS
t_BLANK Current sense blanking time
A_ISENSE Current sense amplifier gain
t_OFF
Current control constant off time
PROTECTION CIRCUITS
Reference only
V_UVLO VM undervoltage lockout
I_OCP
t_DEG
t_OCP
T_TSD ⁽¹⁾
T_HYS ⁽¹⁾
Overcurrent protection trip level
Overcurrent deglitch time
Overcurrent protection period
Thermal shutdown temperature
Thermal shutdown hysteresis
V_VM falling; UVLO report
V_VM rising; UVLO recovery
Die temperature T_J
Die temperature T_J
7.6 Timing Requirements
T_A = 25°C, over recommended operating conditions unless otherwise noted
NO.
PARAMETER
1
t₁
Delay time, xIN1 to xOUT1
2
t₂
Delay time, xIN2 to xOUT1
3
t₃
Delay time, xIN1 to xOUT2
4
t₄
Delay time, xIN2 to xOUT2
5 t_F Output rise time
6 t_R Output fall time
xIN1
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MIN
TYP
MAX UNIT
1.8
μs
6.6
V/V
20
μs
2.9
V
3
2
A
2.8
μs
1.6
ms
150
160
180 °C
50
°C
MIN
MAX
UNIT
100
600
ns
100
600
ns
100
600
ns
100
600
ns
50
150
ns
50
150
ns
xIN2
xOUT1
xOUT2
1
2
z
z
80%
4
z
3
z
20%
5
Figure 1. Timing Diagram
80%
xOUTx
20%
6
6
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