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參數(shù)資料
| 型號： | L6227D |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | DUAL DMOS FULL BRIDGE MOTOR DRIVER |
| 中文描述： | 雙DMOS全橋電機驅(qū)動 |
| 文件頁數(shù)： | 7/11頁 |
| 文件大小： | 105K |
| 代理商： | L6227D |
7/11
L6227
Figure 1. Switching rates definition
CIRCUIT DESCRIPTION
The L6227 is a dual full bridge IC designed to drive DC or Stepper motors and other inductive loads. Each bridge has
4 power DMOS transistorswith a typical R
DS(ON)
of 0.73 Ohm. Any of the 4 half bridges can be controlled indepen-
dently by means of the 4 TTL/CMOS compatible inputs IN1
A
, IN2
A
, IN1
B
, IN2
B
, and 2 enable EN
A
, EN
B
.
External connectionsare provided so that sensing resistorcan be added for constant current chopping application.
A non dissipative current sensing on the supply rails of the high side power DMOSs of each bridge, together
with an Internal Reference and an internal open drain, with a pull down capability of 4mA (typical value) will pull
to GNDthe ENABLE pin of the bridge under fault conditions, turning OFFall the four PowerMOSs. This ensures
a protection against Short Circuit to GND and between two phases of each of the two independent full bridges.
By using an external R-C on the EN pins, the off time before recovering normal operation conditions after afault
can be easily programmed, by means of the accurate threshold of the logic inputs. Note that protection against
short to the supply rail is typically provided by the external current control circuitry. The trip point of this protec-
tion isinternally set at 2.8A (typ value). For each of the two indipendent bridges a monostable and a comparator
can be used to perform a constant t
off
current control.
The L6227 also features an inhibit function to put the device in stand-by mode, reducing the current consump-
tion to 1.1mA typ.
These features makes the L6227 a complete bipolar stepper motor driver, or a Dual DC Motor Driver, that out-
performs the component currently available on the market.
50 %
90 %
10 %
En or IN
I
OUT
t
D(OFF)
t
OFF
t
D(ON)
t
(ON)
t
t
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6227N | DUAL DMOS FULL BRIDGE MOTOR DRIVER |
| L6227PD | DUAL DMOS FULL BRIDGE MOTOR DRIVER |
| L6229 | ACB 22C 4#12,18#12 PIN RECP |
| L6229D | DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR |
| L6229DTR | 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 |
|---|---|
| L6227DTR | 功能描述:馬達/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 |
| L6227N | 功能描述:馬達/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 |
| L6227PD | 功能描述:馬達/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 |
| L6227PDTR | 功能描述:馬達/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 |
| L6227Q | 功能描述:功率驅(qū)動器IC DMOS DUAL FULL Bridge w/ PWM 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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