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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： | 6/27页 |
| 文件大小： | 453K |
| 代理商： | L6208PD013TR |
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L6208
14/27
DECAY MODES
The CONTROL input is used to select the behavior of the bridge during the off time. When the CONTROL pin
is low, the Fast Decay mode is selected and both transistors in the bridge are switched off during the off time.
When the CONTROL pin is high, the Slow Decay mode is selected and only the low side transistor of the bridge
is switched off during the off time.
Figure 14 shows the operation of the bridge in the Fast Decay mode. At the start of the off time, both of the
power MOS are switched off and the current recirculates through the two opposite free wheeling diodes. The
current decays with a high di/dt since the voltage across the coil is essentially the power supply voltage. After
the dead time, the lower power MOS in parallel with the conducting diode is turned on in synchronous rectifica-
tion mode. In applications where the motor current is low it is possible that the current can decay completely to
zero during the off time. At this point if both of the power MOS were operating in the synchronous rectification
mode it would then be possible for the current to build in the opposite direction. To prevent this only the lower
power MOS is operated in synchronous rectification mode. This operation is called Quasi-Synchronous Recti-
fication Mode. When the monostable times out, the power MOS are turned on again after some delay set by the
dead time to prevent cross conduction.
Figure 15 shows the operation of the bridge in the Slow Decay mode. At the start of the off time, the lower power
MOS is switched off and the current recirculates around the upper half of the bridge. Since the voltage across
the coil is low, the current decays slowly. After the dead time the upper power MOS is operated in the synchro-
nous rectification mode. When the monostable times out, the lower power MOS is turned on again after some
delay set by the dead time to prevent cross conduction.
Figure 14. Fast Decay Mode Output Stage Configurations
Figure 15. Slow Decay Mode Output Stage Configurations
STEPPING SEQUENCE GENERATION
The phase sequence generator is a state machine that provides the phase and enable inputs for the two bridges
to drive a stepper motor in either full step or half step. Two full step modes are possible, the Normal Drive Mode
where both phases are energized each step and the Wave Drive Mode where only one phase is energized at a
A) ON TIME
B) 1
s DEAD TIME
C) QUASI-SYNCHRONOUS
RECTIFICATION
D) 1
s SLOW DECAY
D01IN1335
A) ON TIME
B) 1
s DEAD TIME
C) SYNCHRONOUS
RECTIFICATION
D) 1
s DEAD TIME
D01IN1336
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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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