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參數(shù)資料
| 型號： | L6226D |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 2.8 A, PDSO24 |
| 封裝： | SO-24 |
| 文件頁數(shù)： | 3/31頁 |
| 文件大?。?/td> | 525K |
| 代理商： | L6226D |
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L6226
Circuit description
Doc ID 9452 Rev 4
11/31
4
Circuit description
4.1
Power stages and charge pump
The L6226 integrates two independent Power MOS full bridges. Each Power MOS has an
RDSon = 0.73 Ω (typical value @ 25 °C), with intrinsic fast freewheeling diode. Cross
conduction protection is achieved using a dead time (td = 1
μs typical) between the switch off
and switch on of two Power MOS in one leg of a bridge. Using N channel power MOS for the
upper transistors in the bridge requires a gate drive voltage above the power supply voltage.
The Bootstrapped (VBOOT) supply is obtained through an internal oscillator and few
external components to realize a charge pump circuit as shown in Figure 5. The oscillator
output (VCP) is a square wave at 600 kHz (typical) with 10 V amplitude. Recommended
values/part numbers for the charge pump circuit are shown in Table 6.
Figure 5.
Charge pump circuit
4.2
Logic inputs
Pins IN1A, IN2A, IN1B, IN2B, ENA and ENB are TTL/ CMOS and microcontroller compatible
logic inputs. The internal structure is shown in Figure 4. Typical value for turn-on and turn-off
thresholds are respectively Vthon=1.8V and Vthoff = 1.3V. Pins ENA and ENB are commonly
used to implement Overcurrent and Thermal protection by connecting them respectively to
the outputs OCDA and OCDB, which are open-drain outputs. If that type of connection is
chosen, some care needs to be taken in driving these pins. Two configurations are shown in
The resistor REN should be chosen in the range from 2.2 k
Ω to 180 kΩ. Recommended
values for REN and CEN are respectively 100 k
Ω and 5.6 nF. More information on selecting
the values is found in the overcurrent protection section.
Table 6.
Charge pump external components values
CBOOT
220 nF
CP
10 nF
D1
1N4148
D2
1N4148
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6226PD | BRUSHLESS DC MOTOR CONTROLLER, 2.8 A, PDSO36 |
| L6226QTR | BRUSH DC MOTOR CONTROLLER, QCC32 |
| L6226Q | BRUSH DC MOTOR CONTROLLER, 2.8 A, QCC32 |
| L6227N | STEPPER MOTOR CONTROLLER, 2.8 A, PDIP24 |
| L6228Q | STEPPER MOTOR CONTROLLER, 2.8 A, QCC32 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6226DTR | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 Dual Full Bridge 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 |
| L6226N | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 Dual Full Bridge 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 |
| L6226PD | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 Dual Full Bridge 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 |
| L6226PDTR | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 Dual Full Bridge 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 |
| L6226Q | 功能描述:功率驅(qū)動器IC DMOS Full Bridge Driver RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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