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PDF TB62217AFG Data sheet ( Hoja de datos )
| Número de pieza | TB62217AFG | |
| Descripción | DC-DC Converter and Reset function IC | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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TB62217AFG
TOSHIBA BiCD Process Integrated Circuit Silicon Monolithic
TB62217AFG
PWM drive Stepping Motor Driver / Brush DC Motor Driver Selectable, DC-DC Converter
and Reset function IC
The TB62217FG is a dual stepping motor driver driven by PWM
chopper micro step, with 3- channel step-down DC-DC converters and
an external-IC reset function.
To drive a two-phase bipolar-type stepping motor, a 16-bit latch and
a 16-bit shift register are built into the IC. The IC is suitable for
driving stepping motors with low-torque ripple in a highly efficient
manner. In addition, a signal axis can be switched to serve as a PWM
driver for two DC motors.
By equipping the stepping motor driver with Selectable Mixed
Decay Mode for switching the attenuation ratio during chopping, and
also equipping it with a DC-DC converter, it is possible for the IC to
supply external voltage.
With a built-in timer that starts running when the IC is supplied
with power, the IC can be used in resetting (initializing) external
devices.
Features
• The following motor combinations can be used.
Stepper
DC Large DC (L) DC Small DC (S)
(1) Dual motors
(2) Single motor
(3) Single motor
(4) ⎯
(5) ⎯
(6) ⎯
⎯
Single motor
⎯
Single motor
Dual motors
⎯
⎯
⎯
Dual motors
Dual motors
⎯
Quadruple motors
Weight: 0.45 g (typ.)
Note Hereafter, DC Large will be referred to as DC (L) and DC Small will be referred to as DC (S).
Recommended maximum
current
Stationary current
The large current standard is achieved by shorting a small current H-Bridge across two ICs. In addition, if the
thermal setting is designed to be within the prescribed thermal range, the initial torque current can be used as the
normal operating current.
1 2004-11-12
Free Datasheet http://www.datasheet4u.com/
1 page  
TB62217AFG
Pin Descriptions (initial setup mode)
SLEEP = Low supports a write mode for the initial setup or extended setup mode data.
(1) Pin description (SETUP mode, that is, initial setup or extended setup mode)
(2) Pin description (dual axis stepping motor mode)
(3) Pin description (single axis stepping motor and single axis DC (L) mode)
(4) Pin description (single axis stepping motor and dual axis DC (S) mode)
(5) Pin description (dual axis DC (S) and single axis DC (L) mode)
(6) Pin description (dual axis DC (L) mode)
(7) Pin description (quadruple axis DC (S) mode)
Pin Name Assignment Table
++++
+ ++
−−−−
− −−
17 (ODC)
18 (FBC)
19 (ODB)
20 (FBB)
21 CC
22 OSC_D
23 NC
30 NC
25 VDIN1
26 VDIN2
27 VM
28 (VREF AB)
29 (VREF CD)
30 (FBA)
31 (ODA)
ODC
FBC
ODB
FBB
CC
OSC_D
NC
NC
VDIN1
VDIN2
VM
VREF AB
VREF CD
FBA
ODA
ODC
FBC
ODB
FBB
CC
OSC_D
NC
NC
VDIN1
VDIN2
VM
VREF AB
VREF LCD
FBA
ODA
ODC
FBC
ODB
FBB
CC
OSC_D
NC
NC
VDIN1
VDIN2
VM
VREF AB
VREF SCD
FBA
ODA
5
ODC
FBC
ODB
FBB
CC
OSC_D
NC
NC
VDIN1
VDIN2
VM
VREF LAB
VREF SCD
FBA
ODA
ODC
FBC
ODB
FBB
CC
OSC_D
NC
NC
VDIN1
VDIN2
VM
VREF LAB
VREF LCD
FBA
ODA
ODC
FBC
ODB
FBB
CC
OSC_D
NC
NC
VDIN1
VDIN2
VM
VREF SAB
VREF SCD
FBA
ODA
2004-11-12
Free Datasheet http://www.datasheet4u.com
5 Page 
TB62217AFG
2-2. Stepping Motor Logic Unit
(with the same functions for both an A-/B-axis pair and a C-/D-axis pair)
Function
This circuit receives step current setting data entered from the DATA pin and transfers it to the subsequent
stage. It is enabled when the SLEEP pin is high. (If the SLEEP pin is low, the IC enters the initial setup or
extended setup mode.)
STROBE
CLK
DATA
Step current setting data logic circuit and setup logic
16-bit shift register
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Current
control
16-bit latch
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Sleep = H
Torque
× 2 bits
Decay
× 2 bits
B unit side
Current
× 4 bits
B unit side
Phase
× 1 bit
B unit side
Decay
× 2 bits
A unit side
Current
× 4 bits
A unit side
Phase
× 1 bit
A unit
side
Current
feedback
circuit
(TRQ setting)
B unit side
mixed
decay
timing
DA
circuit
B-phase
information
Output control circuit
A unit side
mixed
decay
timing
DA
circuit
A-phase
information
Output control circuit
Once ORT is released, driving the SLEEP pin high puts the IC in a write mode for stepping motor current
control data. Driving the SLEEP pin from high to low and back to high clears any latched motor control data
(to all low).
11 2004-11-12
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 61 Páginas | |
| PDF Descargar | [ Datasheet TB62217AFG.PDF ] | |
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