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參數(shù)資料
| 型號： | L6235N |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR |
| 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> | 434K |
| 代理商： | L6235N |
L6235
8/25
CIRCUIT DESCRIPTION
POWER STAGES and CHARGE PUMP
The L6235 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)
= 0.3
(typical value @25°C) with intrinsic
fast freewheeling diode. Switching patterns are gen-
erated by the PWM Current Controller and the Hall
Effect Sensor Decoding Logic (see relative para-
graphs). 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 transis-
tors 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 external components to realize a charge pump
circuit as shown in Figure 3. 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 Table1.
Table 1. Charge Pump External Component
Values.
C
BOOT
C
P
R
P
D
1
D
2
Figure 3. Charge Pump Circuit
LOGIC INPUTS
Pins FWD/REV, BRAKE, EN, H
1
, H
2
and H
3
are TTL/
CMOS and μC compatible logic inputs. The internal
structure 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 col-
lector DIAG output If the protection and an external dis-
able function are both desired, the appropriate
connection must be implemented. When the external
signal is from an open collector output, the circuit in Fig-
ure 5 can be used . For external circuits that are push
pull outputs the circuit in Figure 6 could be used. The re-
sistor R
EN
should be chosen in the range from 2.2K
to
180K
. Recommended values for R
EN
and C
EN
are re-
spectively 100K
and 5.6nF. More information for se-
lecting the values can be found in the Overcurrent
Protection section.
Figure 4. Logic Input Internal Structure
Figure 5. Pin EN Open Collector Driving
Figure 6. Pin EN Push-Pull Driving
220nF
10nF
100
1N4148
1N4148
D2
C
BOOT
D1
R
P
C
P
V
S
VS
A
VCP
VBOOT
VS
B
D01IN1328
5V
D01IN1329
ESD
PROTECTION
5V
5V
OPEN
COLLECTOR
OUTPUT
R
EN
C
EN
EN
DIAG
D02IN1378
ESD
PROTECTION
5V
PUSH-PULL
OUTPUT
R
EN
C
EN
EN
D02IN1379
DIAG
ESD
PROTECTION
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6235PD | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Three Phase 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 |
| L6235PD013TR | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Three Phase 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 |
| L6235Q | 功能描述:馬達/運動/點火控制器和驅(qū)動器 DMOS 3-Phase DC 5.6A 0.3 Ohm 100kHz 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 |
| L6235QTR | 功能描述:馬達/運動/點火控制器和驅(qū)動器 DMOS 3-Phase Brushless 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 |
| L6236 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC |
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