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PDF THB6128 Data sheet ( Hoja de datos )
| Número de pieza | THB6128 | |
| Descripción | Development Specification Proposal | |
| Fabricantes | ETC | |
| Logotipo |  |
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THB6128 Development Specification Proposal
1. Application: PWM current control stepping motor driver
2. Package: MFP30KR
3. Features
1 channel PWM current control stepping motor driver
BiCDMOS process IC
Output on-resistance( High side 0.3 Ω, Low side 0.25 Ω, Total 0.55 Ω; Ta = 25°C, Io = 2.0 A)
2, 1-2, W1-2, 2W1-2, 4W1-2, 8W1-2, 16W1-2, 32W1-2 phase excitation are selectable
Advance the excitation step with the only step signal input
Available forward reverse control
Iomax=2.2A
Over current protection circuit
Thermal shutdown circuit
Input pull down resistance
With reset pin and enable pin
4. Absolute Maximum Ratings at Ta = 25°C
Parameter
Supply voltage
Symbol
VMmax
Output current
Logic input voltage
VREF input voltage
MO input voltage
DOWN input voltage
Operating temperature
Storage temperature
Iomax
VINmax
VREFmax
VMOmax
VDOmax
Topg
Tstg
5. Recommended Operating Range at Ta=25°C
Parameter
Supply voltage range
Logic input voltage range
VREF input voltage range
Symbol
VM
VIN
VREF
Ratings
40
2.2
6
6
6
6
-20 to +85
-55 to +150
Unit
V
A
V
V
V
V
°C
°C
Ratings
9 to 32
0 to 5
0 to 3
Unit
V
V
V
1
1 page  
9. Description of functions
9-1) Stand-by function
When ST/VCC pin is at low levels, the IC enters stand-by mode, all logic is reset and output is turned OFF.
When ST/VCC pin is at high levels, the stand-by mode is released.
9-2) Step pin function
CLK pin step signal input allows advancing excitation step.
Input
ST/VCC
L
H
CLK
*
Operation
Stand-by mode
Excitation step feed
H Excitation step hold
9-3) Excitation setting method
Set the excitation setting as shown in the following table by setting M1 pin, M2 pin and M3 pin.
Input
Mode
Initial position
M3
M2
M1
(Excitation)
A phase current B phase current
LLL
2 phase
100%
-100%
L L H 1-2 phase 100%
0%
L H L W1-2 phase 100%
0%
L H H 2W1-2 phase 100%
0%
H L L 4W1-2 phase 100%
0%
H L H 8W1-2 phase 100%
0%
H H L 16W1-2 phase 100%
0%
H H H 32W1-2 phase 100%
0%
The initial position is also the default state at start-up and excitation position at counter-reset in each excitation mode.
9-4) Output current setting
Output current is set as shown below by the VREF pin (applied voltage) and a resistance value between NFA (B) pin and
GND.
Iout = (VREF / 5)/ NFA (B) resistance
※* The setting value above is a 100% output current in each excitation mode.
(Example) When VREF=1.5V and NFA (B) resistance is 0.3 Ω, the setting current is shown below.
Iout = (1.5 V / 5) / 0.3 Ω = 1.0 A
5
5 Page 
W1-2 phase excitation (CW mode)
CLK
MO
IA
(%)
10 0
0
－1 00
(%)
100
IB 0
－10 0
4W1-2 phase excitation (CW mode)
11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet THB6128.PDF ] | |
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