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參數(shù)資料
| 型號： | L9903TR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, PDSO20 |
| 封裝： | SO-20 |
| 文件頁數(shù)： | 3/17頁 |
| 文件大?。?/td> | 269K |
| 代理商： | L9903TR |
11/17
L9903
3
FUNCTIONAL DESCRIPTION
3.1 General
The L9903 integrated circuit (IC) is designed to control four external N-channel MOS transistors in H-Bridge con-
figuration for DC-motor driving in automotive applications. It includes an ISO9141 compatible interface. A typical
application is shown in fig.9.
3.2 Voltage supply
The IC is supplied via an external reverse battery protection diode to the VVS pin. The typical operating voltage
range is down to 8V.
The supply current consumption of the IC composes of static and a dynamic part. The static current is typically
5.8mA. The dynamical current Idyn is depending of the PWM frequency fPWM and the required gate charge QGate
of the external power mos transistor. The current can be estimated by the expression:
Idyn = 2 fPWM QGate
An external power transistor with a gate charge of QGate = 160nC and a PWM frequency of fPWM = 20kHz re-
quires a dynamical supply current of Idyn = 6.4mA.
The total supply current consumption is IVS = 5.8mA + 6.4mA = 12.2mA.
3.3 Extended supply voltage range (ST)
The operating battery voltage range can be extended down to 6V using the additional components shown in
fig.7. A small inductor of L~150H (Ipeak~500mA) in series to the battery supply builts up a step up converter
with the switching open drain output ST. The switching frequency is typical 100kHz with a fixed duty cycle of
50%. The step up converter starts below VVS < 8V, increases the supply voltage at the VS pin and switches off
at VVS > 10V to avoid EME at nominal battery voltage. The diode D2 in series with the ST pin is necessary only
for systems with negative battery voltage. No additional load can be driven by the step up converter.
Figure 10.
V
BAT
L1
D1
D2
C1
C2
VS
ST
VSTH
fST
=
-
+
L9903
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| L9942XPTR | STEPPER MOTOR CONTROLLER, 2.5 A, PDSO24 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L9904 | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Motor Bridge Contlr 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 |
| L9904TR | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Motor Bridge Contlr 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 |
| L9906 | 功能描述:馬達/運動/點火控制器和驅(qū)動器 3-Phase Motor Control Driver 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 |
| L9906TR | 功能描述:馬達/運動/點火控制器和驅(qū)動器 3-Phase Motor Control Driver 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 |
| L9907 | 制造商:HAMAMATSU 功能描述:IR EMITTER 660NM |
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