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DRV8809A0PAP 数据表(PDF) 10 Page - Texas Instruments

部件名 DRV8809A0PAP
功能描述  COMBINATION MOTOR DRIVERS WITH DC-DC CONVERTERS
Download  44 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

DRV8809A0PAP 数据表(HTML) 10 Page - Texas Instruments

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DRV8809
DRV8810
SLVS854A – JULY 2008 – REVISED JULY 2008 ............................................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
TJ = 0°C to 120°C, VM = 7 V to 40 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
H-Bridge Drivers (OUTx+ and OUTx–)
IOUT1(max)
Peak output current 1
Less than 500-ns period
8
A
IOUT2(max)
Peak output current 2
Less than 100-ms period
3
A
Average continuous output
IOUT(max)
0.8
A
current
TJ = 25°C
0.55
Rds(ON)
FET ON resistance at 0.8 A
TJ = 120°C
1
ICEX
Output leakage current
VOUTX = 0 V or 10 V
10
µA
IRS
Sense resistor supply current
nORT = Low
15
µA
Motor overcurrent threshold for
IOC Motor
3
5
A
each H-bridge(6)
tfilterM
Motor overcurrent filter time
2.5
5
8.5
µs
fOSCM
Motor oscillator frequency
F_OSCM = (0,0)
720
800
880
kHz
Motor chopping frequency =
fchop
F_OSCM = (0,0)
90
100
110
kHz
fOSCM/8
Stepper Motor Drive (Parameters Are Tested Without Motor Loading)
Average stepper motor current
ISTEPMOTORAVG
VM = 40 V
800
mA
for H-bridge
Peak stepper motor current
ISTEPMOTORPeak
VM = 40 V
1.3
A
for H-bridge
VL16 , Phase angle = 90°
100
VL15 , Phase angle = 84°
100
VL14 , Phase angle = 79°
98
VL13 , Phase angle = 73°
96
VL12 , Phase angle = 68°
92
VL11 , Phase angle = 62°
88
VL10 , Phase angle = 56°
83
VL9 , Phase angle = 51°
77
Stepper motor current limit
threshold
VL8 , Phase angle = 45°
71
%
(internal reference)(7)
VL7 , Phase angle = 40°
63
VL6 , Phase angle = 34°
56
VL5 , Phase angle = 28°
47
VL4 , Phase angle = 23°
38
VL3 , Phase angle = 17°
29
VL2 , Phase angle = 11°
20
VL1 , Phase angle = 6°
10
VL0 , Phase angle = 0°
0
Output current accuracy at 100% Excludes VREF and RSENS errors,
IOUT
–5
5
%
setting(7)
IOUT > 1 A
(7) (8)
Switch (driver MOSFET) leakage
IswLeakage
Outputs off
–10
10
µA
current
tab
Stepper motor blanking time
By OSCi cycles
8
9
cycles
(6)
When the overcurrent is detected, all H-bridges are shut down and assert nORT pulse (40 ms).
(7)
This is not measured directly, checked by Itrip amplifier gain without motor loading
(8)
This device may show current setting error when motor current is less than 1 A, due to noise filter delay at the Itrip comparator.
10
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Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): DRV8809 DRV8810


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