DRV8809 Datasheet, PDF (2/44 Pages) Texas Instruments – COMBINATION MOTOR DRIVERS WITH DC-DC CONVERTERS

DRV8809
DRV8810
SLVS854A – JULY 2008 – REVISED JULY 2008 ............................................................................................................................................................... www.ti.com
BLOCK DIAGRAM
(One Stepper Motor and Two DC Motor Drives)
DCDC_MODE
VM
Cstorage
0.1uF
TH_OUT
VCP
0.01uF
Cbkt
CP1 CP2
VDIN
VM
Vout 1
Vout 2
Vout 3
C_SELECT
OD_A
FBA
OD_B
FBB
OD_C
FBC
In-Reset
OSCD_mon
OSCM_mon
LOGIC_OUT
nORT
nSLEEP
DC/DC
convertor
Ch-A
Temperature
Sens :
Pre-TSD or
Tsens (analog)
Thermal
Shut down
Voltage
charge
pump
To
To
To Highside _{DC/DC H-bridges}
gate drive
Motor Drive
Output
Control A
OUTA+
VM
RSA
OUTA-
MGND
DC/DC
convertor
Ch-B
Voltage
Supervisory
VM
Regulator
Internal
supply
DC/DC
convertor
Ch-C
Pre-Drive, Latch
Registers &
control circuitry
Freq divider
for DC/DC
OSCi
6.4MHz
Freq divider
Motor PWM
Motor Drive
Output
Control B
Motor Drive
Output
Control C
Motor Drive
Output
Control D
OUTB+
VM
RSB
OUTB-
OUTC+
VM
RSC
OUTC-
MGND
OUTD+
VM
RSD
OUTD-
Stepper
Motor
DC
Motor
DC
Motor
VREF_AB
LGND
Setup / ex-setup
registers
Serial Interface A-B
Serial Interface C-D
VREF_CD
ENABLE_SD NC STROBE_AB DATA_AB CLK_AB ENABLE_SC PHASE_SD PHASE_SC
MTR Config ;
Stepper x 2
Stepper + LDC
Step + SDCx2
LDC + SDCx2
LDC x 2
SDC x 4
Large Stepper
Ultra Large DC
Pin # 50
(NC)
(NC)
ENABLE_SD
ENABLE_SD
(NC)
ENABLE_SD
(NC)
(NC)
Pin # 54
(NC)
(NC)
(NC)
(NC)
(NC)
ENABLE_SB
(NC)
(NC)
Pin # 55
Pin # 61
STROBE_AB Data_AB
STROBE_AB Data_AB
STROBE_AB Data_AB
ENABLE_LAB (NC)
ENABLE_LAB (NC)
ENABLE_SA PHASE_SB
STROBE_AB Data_AB
ENABLE_UL (NC)
Pin # 62
CLK_AB
CLK_AB
CLK_AB
PHASE_LAB
PHASE_LAB
PHASE_SA
CLK_AB
PHASE_UL
Pin # 51
Pin # 59
STROBE_CD Data_CD
ENABLE_LCD (NC)
ENABLE_SC PHASE_SD
ENABLE_SC PHASE_SD
ENABLE_LCD (NC)
ENABLE_SC PHASE_SD
STROBE_CD Data_CD
(NC)
(NC)
Pin # 60
CLK_CD
PHASE_LCD
PHASE_SC
PHASE_SC
PHASE_LCD
PHASE_SC
CLK_CD
(NC)
2
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