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參數(shù)資料
| 型號： | L6225 |
| 廠商： | 意法半導體 |
| 元件分類： | 基準電壓源/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)： | 6/10頁 |
| 文件大?。?/td> | 90K |
| 代理商： | L6225 |
6/10
L6225
Figure 1. Switching rates definition
CIRCUIT DESCRIPTION
The L6225 is a dual full bridge IC designed to drive DC or stepper motors and otherinductiveloads. Each bridge has
4 power DMOS transistors with a typical R
DS(ON)
of 0.3 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 ENA, ENB .
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, an internal
reference and an internal open drain, with a pull down capability of 4mA (typical value), will pull to GND the EN-
ABLE pin of the bridge under fault conditions, turning OFF all the four PowerDMOSs. 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 a fault 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 protection is
set at 2.8A (typ value).
50 %
90 %
10 %
En or IN
I
OUT
t
D(OFF)
t
OFF
t
D(ON)
t
(ON)
t
t
相關PDF資料 |
PDF描述 |
|---|---|
| L6225D | DUAL DMOS FULL BRIDGE MOTOR DRIVER |
| L6225N | DUAL DMOS FULL BRIDGE MOTOR DRIVER |
| L6225PD | DUAL DMOS FULL BRIDGE MOTOR DRIVER |
| L6227 | DUAL DMOS FULL BRIDGE MOTOR DRIVER |
| L6227D | DUAL DMOS FULL BRIDGE MOTOR DRIVER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| L6225_03 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DMOS DUAL FULL BRIDGE DRIVER |
| L6225D | 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| L6225DTR | 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| L6225N | 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| L6225PD | 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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