DRV8823-Q1 Datasheet, PDF (6/18 Pages) Texas Instruments – 4-BRIDGE SERIAL INTERFACE MOTOR DRIVER

DRV8823-Q1
SLVSBH2A – JUNE 2012 – REVISED JULY 2012
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
V_M
I_MOT
V_REF
Motor power supply voltage range
Continuous motor drive output current⁽¹⁾
VREF input voltage
(1) Power dissipation and thermal limits must be observed.
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MIN NOM
8
1
1
MAX
32
1.5
4
UNIT
V
A
V
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
POWER SUPPLIES
I_VM
V_M operating supply current
V_M = 24 V, no loads
V_UVLO V_M undervoltage lockout voltage
V_M rising
V_CP
Charge pump voltage
Relative to V_M
V_V3P3 V_V3P3 output voltage
LOGIC-LEVEL INPUTS (INTERNAL PULLDOWNS)
V_IL
V_IH
V_HYS
I_IN
Input low voltage
Input high voltage
Input hysteresis
Input current
(internal pulldown current)
VIN = 3.3 V
OVERTEMPERATURE PROTECTION
T_TSD Thermal shutdown temperature
MOTOR DRIVERS
Die temperature
R_DS(ON)
Motor number 1 FET on resistance
(each individual FET)
R_DS(ON)
Motor number 2 FET on resistance
(each individual FET)
I_OFF
f_PWM
t_BLANK
Off-state leakage current
Motor PWM frequency⁽¹⁾
ITRIP blanking time⁽²⁾
t_F
Output fall time
t_R
Output rise time
I_OCP
Overcurrent protect level
t_OCP
Overcurrent protect trip time
t_MD
Mixed decay percentage
CURRENT CONTROL
V_M = 24 V, I_O = 0.8 A, T_A = 25°C
V_M = 24 V, I_O = 0.8 A, T_A = 85°C
V_M = 24 V, I_O = 0.8 A, T_A = 85°C to 125°C
V_M = 24 V, I_O = 0.8 A, T_A = 25°C
V_M = 24 V, I_O = 0.8 A, T_A = 85°C
V_M = 24 V, I_O = 0.8 A, T_A = 85°C to 125°C
Measured from beginning of PWM cycle
I_REF
xVREF input current
ΔI_CHOP Chopping current accuracy
xVREF = 3.3 V
xVREF = 2.5 V, derived from V3P3; 71% – 100%
current
xVREF = 2.5 V, derived from V3P3; 20% – 56% current
(1) Factory option 100 kHz.
(2) Factory options for 2.5 μs, 5 μs or 6.25 μs.
MIN TYP MAX UNIT
5
8 mA
6.5
8V
12
V
3.20 3.30 3.40 V
0.7 V
2
V
0.3 0.45 0.6 V
100 μA
150
°C
0.25
0.31 0.37 Ω
.435 .570
0.30
0.38 0.45 Ω
.446 .570
±12 μA
43
50
57 kHz
3.75
μs
50
300 ns
50
300 ns
1.5
3 4.5 A
2.5
μs
75%
–3
3 μA
–5
5
%
–10
10
6
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