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PDF L8229 Data sheet ( Hoja de datos )
| Número de pieza | L8229 | |
| Descripción | Dual DMOS full bridge stepper/DC motor driver | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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L8229
Dual DMOS full bridge stepper/DC motor driver
Preliminary Data
Features
■ Flexible Motor Driver configurations:
– Dual Full Bridge for one bipolar Stepping motor.
– Dual or single DC motor driver.
■ Programmable by two input pins to achieve
one of the following functionalities:
PwSSO24
– Pin to pin compatible with ST L6219 or
– Stepping motor direct control with 8 current
levels or
)– Driver parameters control by means of
t(sSerial Port.
c■ Mixed Decay.
du■ Micro stepping function.
ro■ BCD5 technology (No Charge Pump required).
P■ Supply Range from 8V to 38V.
te■ IOUT up to 1.2A (1.5A peak).
le■ RDSon= 0.85Ω (typ) for each switch.
o■ Input logic level compatible with 3.3V or 5V
bscontrol signals.
O■ Package: PwSSO24.
) -Description
t(sThis IC is designed to be very flexible in driving
cStepping or DC motors.
duBy connecting to Vcc or to Gnd two program pins
ro(pin 7 and 18) the user has the possibility to set
up the device in different configurations.
P1. The first configuration is an identical
teapplication of ST L6219 but with increased
lecurrent. In this configuration L8229 provides
oa continuous current of the output stage up
sto 1.2A (1.5A peak).
b2. The second configuration allows a
O functionality similar to previous one but with
levels to perform a more accurate stepping
functionality. This is achieved by multiplexing
the input pins dedicated to set the level of the
current. Additionally the user can set the
mixed mode decay for current recirculation.
3,4. The third and fourth configurations are
intended to provide a very flexible
programming for several parameters useful
to drive different kind of Stepping and DC
motors. This is achieved by means of a serial
port interface that allows the user to
configure the following parameters:
a) Current levels (32 values for each
bridge).
b) Current direction.
c) Type of decay for Stepping motors
(Mix/Slow) or for DC motors (Fast/Slow).
d) Vref input (Ext/Int).
e) Vref divider (:5/:10).
f) Blanking time (4 values).
g) Oscillator freq divider (4 values).
h) Off time (32 values).
i) Fast decay time (16 values).
j) Syncronous rectification.
The functionalities of the two configurations are
identical except that the internal bit address (first
bit of SPI words) can be programmed to be 1 or 0:
this enables two different L8229 to share a
the possibility of choosing 8 different current
common serial bus.
Order code
Part number
L8229
Package
PwSSO24
Packing
Tube
September 2006
Rev 5
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
1/42
www.st.com
1
1 page  
L8229
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin Connection (Top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Ton and Toff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Half and Full Step Drive with Imax=1.2A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Normal conduction and slow recirculation current paths. . . . . . . . . . . . . . . . . . . . . . . . . . . 17
L6219_8 mode Stepping Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
L6219_8 mode Fast and Slow Decay current paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
SPI Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Active and Passive synchronous rectification during Mixed Decay. . . . . . . . . . . . . . . . . . . 34
PowerSSO24 Mechanical Data & Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Obsolete Product(s) - Obsolete Product(s)
5/42
5 Page 
L8229
Table 4. Operating ratings (0°C ≤ Tj ≤ 125°C) (continued)
Symbol
Parameter
Test Condition
Vcc total supply current
I_VccL6219
Vcc=5.25V
(L6219_HI and L6219_8 modes)
Vcc total supply current
I_VccL8229_0/1 (L8229_0 or L8229_1 mode)
Vcc=5.25V
Vcc=5.25V,
NSLEEP (W1, bit3) = 0
Vin Logic input voltage
Iout
Motor Driver Output Current
(continuous)
Electrical Characteristics
Min. Typ. Max. Unit
7 mA
7 mA
3 mA
0 Vcc V
1.2 A
3.3 General electrical characteristics
t(s)3.3.1
(0°C ≤ Tj ≤ 125°C, VS = 32V, unless otherwise specified)
Output Drivers (OUTA or OUTB)
cTable 5. Output Drivers (OUTA or OUTB)
duSymbol
Parameter
Test Condition
ProRDSON
Output ON Resistance
(Tj = 70 °C)
leteIcex Output leakage current
soVF Body Diode Forward Voltage
t(s) - Obtr Output rising time
Obsolete Productf Output falling time
Source Driver, ILOAD =-1.2A
Sink Driver, ILOAD =+1.2A
Vout = Vs or Gnd
Sink Diode, IF = 1.2A
Source Diode, IF = 1.2A
Vs=12V, RL=12Ω connected to
Vs or Gnd
Vs=24V, RL=38Ω connected to
Vs or Gnd
Vs=36V, RL=58Ω connected to
Vs or Gnd
Vs=12V, RL=12Ω connected to
Vs or Gnd
Vs=24V, RL=38Ω connected to
Vs or Gnd
Vs=36V, RL=58Ω connected to
Vs or Gnd
Min.
Typ.
50
1
1
Max.
1.3
1.3
1.5
1.5
Unit
Ω
Ω
µA
V
V
100 350 ns
75 300 ns
Tdead Shoot through delay
1 µA
11/42
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| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet L8229.PDF ] | |
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