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參數(shù)資料
| 型號： | L6229QTR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 2.8 A, QCC32 |
| 封裝： | 5 X 5 MM, 1 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 |
| 文件頁數(shù)： | 4/28頁 |
| 文件大?。?/td> | 521K |
| 代理商： | L6229QTR |
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Circuit description
L6229Q
12/28
Doc ID 15209 Rev 3
5.2
Logic inputs
Pins FWD/REV, BRAKE, EN, H1, H2 and H3 are TTL/CMOS and microcontroller compatible
logic inputs. The internal structure is shown in Figure 6. Typical value for turn-on and turn-off
thresholds are respectively V
th(ON)= 1.8 V and Vth(OFF)= 1.3 V.
Pin EN (Enable) has identical input structure with the exception that the drain of the
Overcurrent and thermal protection MOSFET is also connected to this pin. Due to this
connection some care needs to be taken in driving this pin. The EN input may be driven in
one of two configurations as shown in Figure 10 or Figure 11. If driven by an open drain
(collector) structure, a pull-up resistor REN and a capacitor CEN are connected as shown in
Figure 10. If the driver is a standard Push-Pull structure the resistor R
EN and the capacitor
C
EN are connected as shown in Figure 11. The resistor REN should be chosen in the range
from 2.2 k
Ω to 180 kΩ. Recommended values for R
EN and CEN are respectively 10 kΩ and
5.6 nF. More information on selecting the values is found in the overcurrent protection
section.
Figure 6.
Logic inputs internal structure
Figure 7.
Pin EN open collector driving
Figure 8.
Pin EN push-pull driving
5V
D01IN1329
ESD
PROTECTION
5V
OPEN
COLLECTOR
OUTPUT
REN
CEN
EN
DIAG
D02IN1378
ESD
PROTECTION
5V
PUSH-PULL
OUTPUT
REN
CEN
EN
D02IN1379
DIAG
ESD
PROTECTION
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