DRV8809 Datasheet, PDF (11/44 Pages) Texas Instruments – COMBINATION MOTOR DRIVERS WITH DC-DC CONVERTERS

DRV8809
DRV8810
www.ti.com ............................................................................................................................................................... SLVS854A – JULY 2008 – REVISED JULY 2008
ELECTRICAL CHARACTERISTICS (continued)
T_J = 0°C to 120°C, V_M = 7 V to 40 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
Stepper and DC Motor Drivers
t_r
t_f
t_PDOFF
Rise time
Fall time
Enable or strobe detection to
sink or source gate off delay
V_M = 27 V
20% to 80%
t_COD
Crossover delay time, to prevent
shoot through
t_PDON
Enable or strobe detection to
sink or source gate on delay
DC Motor Drivers
t_blank
t_wPminp
t_wPmine
Serial Interface
Blanking time
Minimum pulse duration (phase)
TBLNK = (0,0) for Min, (1,1) for Max,
f_CHOP = 100 kHz
Minimum pulse duration (enable)
f_(CLK)
Clock frequency
t_wh(CLK)
Minimum high-level pulse width
t_wl(CLK)
Minimum low-level pulse width
t_su
Setup time, data to CLK↓
t_h
Hold time, CLK↓ to data
t_cs
CLK↓ to STROBE↑
t_sc
STROBE↓ to CLK↑
t_w(STRB)
Minimum strobe pulse duration
t_{ss_min}
Strobe mask time from nSLEEP
Serial Interface: ID Monitor Function at LOGIC_OUT, Extended Setup Mode
t_ODL
0 data output delay bit 3 to bit 0 From strobe rise to LOGIC_OUT,
(ext-setup) = (1100)
1 kΩ to external 3.3 V
t_ODH
1 data output delay bit 3 to bit 0 From strobe rise to LOGIC_OUT,
(ext-setup) = (1111)
1 kΩ to external 3.3 V
MIN TYP
100
100
50 150
100 600
750
MAX UNIT
300 ns
300 ns
400 ns
1000 ns
ns
1.6
5.65 µs
1 µs
1 µs
1
25 MHz
10
ns
10
ns
10
ns
10
ns
10
ns
10
ns
20
ns
1.5
4 µs
4000 ns
4000 ns
Serial Interface
The device has two serial interface circuit blocks for stepper motor driving control. These two serial interfaces
provide controls to each motor driver independently.
CLKAB
DATAAB
STROBEAB
Serial clock for H-bridge A, B
Serial data for H-bridge A, B
Strobe input for H-bridge A, B
CLKCD
DATACD
STROBECD
Serial clock for H-bridge C, D
Serial data for H-bridge C, D
Strobe signal for H-bridge C, D
Copyright © 2008, Texas Instruments Incorporated
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