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參數(shù)資料
| 型號： | L6235N |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 5.6 A, PDIP24 |
| 封裝： | POWER, DIP-24 |
| 文件頁數(shù)： | 24/25頁 |
| 文件大小： | 442K |
| 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
RDS(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 (tDT = 1s 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 VSA and VSB MUST be connected together to
the supply voltage (VS).
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
(VBOOT) 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.
Figure 3. Charge Pump Circuit
LOGIC INPUTS
Pins FWD/REV, BRAKE, EN, H1, H2 and H3 are TTL/
CMOS and C compatible logic inputs. The internal
structure is shown in Figure 4. Typical value for turn-
ON and turn-OFF thresholds are respectively Vth(ON)
= 1.8V and Vth(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 REN should be chosen in the range from 2.2K to
180K
. Recommended values for REN and CEN 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
CBOOT
220nF
CP
10nF
RP
100
D1
1N4148
D2
1N4148
D2
CBOOT
D1
RP
CP
VS
VSA
VCP
VBOOT
VSB
D01IN1328
5V
D01IN1329
ESD
PROTECTION
5V
OPEN
COLLECTOR
OUTPUT
REN
CEN
EN
DIAG
D02IN1378
ESD
PROTECTION
5V
PUSH-PULL
OUTPUT
REN
CEN
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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