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參數(shù)資料
| 型號： | L6229 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | ACB 22C 4#12,18#12 PIN RECP |
| 中文描述： | DMOS的驅(qū)動三相無刷直流電動機 |
| 文件頁數(shù)： | 8/25頁 |
| 文件大?。?/td> | 582K |
| 代理商： | L6229 |
L6229
8/25
3
CIRCUIT DESCRIPTION
3.1 POWER STAGES and CHARGE PUMP
The L6229 integrates a Three-Phase Bridge, which consists of 6 Power MOSFETs connected as shown on the
Block Diagram. Each Power MOS has an R
DS(ON)
= 0.73
(typical value @25°C) with intrinsic fast freewheeling
diode. Switching patterns are generated by the PWM Current Controller and the Hall Effect Sensor Decoding
Logic (see relative paragraphs). Cross conduction protection is implemented by using a dead time (t
DT
= 1μs
typical value) set by internal timing circuit between the turn off and turn on of two Power MOSFETs in one leg
of a bridge.
Pins VS
A
and VS
B
MUST be connected together to the supply voltage (V
S
).
Using N-Channel Power MOS for the upper transistors in the bridge requires a gate drive voltage above the
power supply voltage. The Bootstrapped Supply (V
BOOT
) is obtained through an internal oscillator and few ex-
ternal components to realize a charge pump circuit as shown in Figure 6. The oscillator output (pin VCP) is a
square wave at 600KHz (typically) with 10V amplitude. Recommended values/part numbers for the charge
pump circuit are shown in Table 7.
Table 7. Charge Pump External Component Values.
C
BOOT
Figure 6. Charge Pump Circuit
3.2 LOGIC INPUTS
Pins FWD/REV, BRAKE, EN, H
1
, H
2
and H
3
are TTL/CMOS and μC compatible logic inputs. The internal struc-
ture is shown in Figure 4. Typical value for turn-ON and turn-OFF thresholds are respectively V
th(ON)
= 1.8V and
V
th(OFF)
= 1.3V.
Pin EN (enable) may be used to implement Overcurrent and Thermal protection by connecting it to the open collector
DIAG output If the protection and an external disable function are both desired, the appropriate connection must be
implemented. When the external signal is from an open collector output, the circuit in Figure 8 can be used . For ex-
ternal circuits that are push pull outputs the circuit in Figure 9 could be used. The resistor R
EN
should be chosen in
the range from 2.2K
to 180K
. Recommended values for R
EN
and C
EN
are respectively 100K
and 5.6nF. More
information for selecting the values can be found in the Overcurrent Protection section.
220nF
C
P
10nF
R
P
100
D
1
1N4148
D
2
1N4148
D2
C
BOOT
D1
R
P
C
P
V
S
VS
A
VCP
VBOOT
VS
B
D01IN1328
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6229D | DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR |
| L6229DTR | DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR |
| L6229N | DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR |
| L6229PD | DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR |
| L6229PDTR | DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6229D | 功能描述:馬達/運動/點火控制器和驅(qū)動器 3-Phase DC Motor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| L6229DP | 功能描述:馬達/運動/點火控制器和驅(qū)動器 3-Phase DC Motor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| L6229DPTR | 功能描述:馬達/運動/點火控制器和驅(qū)動器 3-Phase DC Motor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| L6229DTR | 功能描述:馬達/運動/點火控制器和驅(qū)動器 3-Phase DC Motor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| L6229N | 功能描述:馬達/運動/點火控制器和驅(qū)動器 3-Phase DC Motor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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