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参数资料
| 型号： | L6208PD013TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 5.6 A, PDSO36 |
| 封装： | ROHS COMPLIANT, POWER, SOP-36 |
| 文件页数： | 3/27页 |
| 文件大小： | 453K |
| 代理商： | L6208PD013TR |
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11/27
L6208
PWM CURRENT CONTROL
The L6208 includes a constant off time PWM current controller for each of the two bridges. The current control
circuit senses the bridge current by sensing the voltage drop across an external sense resistor connected be-
tween the source of the two lower power MOS transistors and ground, as shown in Figure 10. As the current in
the motor builds up the voltage across the sense resistor increases proportionally. When the voltage drop
across the sense resistor becomes greater than the voltage at the reference input (VREFA or VREFB) the sense
comparator triggers the monostable switching the bridge off. The power MOS remain off for the time set by the
monostable and the motor current recirculates as defined by the selected decay mode, described in the next
section. When the monostable times out the bridge will again turn on. Since the internal dead time, used to pre-
vent cross conduction in the bridge, delays the turn on of the power MOS, the effective off time is the sum of the
monostable time plus the dead time.
Figure 10. PWM Current Controller Simplified Schematic
Figure 11 shows the typical operating waveforms of the output current, the voltage drop across the sensing re-
sistor, the RC pin voltage and the status of the bridge. More details regarding the Synchronous Rectification and
the output stage configuration are included in the next section.
Immediately after the Power MOS turns on, a high peak current flows through the sensing resistor due to the
reverse recovery of the freewheeling diodes. The L6208 provides a 1
s Blanking Time tBLANK that inhibits the
comparator output so that this current spike cannot prematurely re-trigger the monostable.
DRIVERS
+
DEAD TIME
S
Q
R
DRIVERS
+
DEAD TIME
2H
1H
2L
1L
OUT2A(or B)
SENSEA(or B)
RSENSE
D01IN1332
RCA(or B)
ROFF
COFF
VREFA(or B)
IOUT
OUT1A(or B)
+
-
1
s
5mA
BLANKER
SENSE
COMPARATOR
OUTPUT
MONOSTABLE
SET
2.5V
5V
FROM THE
LOW-SIDE
GATE DRIVERS
2 PHASE
STEPPER MOTOR
BLANKING TIME
MONOSTABLE
VSA (or B)
TO GATE LOGIC
(0)
(1)
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| L6219R013TR | STEPPER MOTOR CONTROLLER, 1 A, PDSO24 |
| L6223 | STEPPER MOTOR CONTROLLER, 6 A, PDIP20 |
| L6225PDTR | BRUSHLESS DC MOTOR CONTROLLER, 2.8 A, PDSO20 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6208Q | 功能描述:马达/运动/点火控制器和驱动器 DMOS Driver Bipolar 5.6A 100kHz 8 to 52V RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| L6208QTR | 功能描述:马达/运动/点火控制器和驱动器 DMOS Dual Full Bridge Driver 5.6A RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| L620C | 制造商:Pass & Seymour/Legrand 功能描述:Connector, Turnlok 3 Wire Ground, IP20, 20A, 250V, Black Back, White Front Body 制造商:Pass & Seymour/Legrand 功能描述:CONNECTOR POWER ENTRY RECEPTACLE 20A 制造商:Pass & Seymour/Legrand 功能描述:CONNECTOR, POWER ENTRY, RECEPTACLE, 20A 制造商:Pass & Seymour/Legrand 功能描述:CONNECTOR, POWER ENTRY, RECEPTACLE, 20A; Connector Type:Power Entry; Series:Turnlok; Current Rating:20A; Connector Color:Black / White; Connector Body Material:Nylon (Polyamide); Voltage Rating VAC:125V; Connector Mounting:Cable 制造商:Hubbell Premise Wiring 功能描述:Conn Power PL 2Power/1Ground POS Solder ST Panel Mount 3 Terminal 1 Port 制造商:Hubbell Wiring Device-Kellems 功能描述:LKG CONN, 20A 250V, HUB PRO, L6-20R |
| L620FI | 制造商:Pass & Seymour/Legrand 功能描述:CONNECTOR POWER ENTRY PLUG 制造商:Pass & Seymour/Legrand 功能描述:CONNECTOR, POWER ENTRY, PLUG, 20A; Connector Type:Power Entry; Series:Turnlok; Current Rating:20A; Connector Color:Grey; Connector Body Material:PC (Polycarbonate); Voltage Rating VAC:125V; Connector Mounting:Flange; Gender:Plug |
| L6-20FO | 制造商:Pass & Seymour/Legrand 功能描述:Power Outlet 制造商:Pass & Seymour/Legrand 功能描述:CONNECTOR, AC POWER, PLUG, 20A, 250V; Connector Type:Electrical AC Power; Series:-; Current Rating:20A; Connector Color:Grey; Connector Body Material:Thermoplastic; Voltage Rating VAC:250V ;RoHS Compliant: NA |
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