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參數(shù)資料
| 型號： | L9904 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | MOTOR BRIDGE CONTROLLER |
| 中文描述： | 汽車橋控制器 |
| 文件頁數(shù)： | 12/17頁 |
| 文件大?。?/td> | 268K |
| 代理商： | L9904 |
L9904
12/17
FUNCTIONAL DESCRIPTION
General
The L9904 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.6.
Voltage supply
The IC is supplied via an external reverse battery protection diode to the V
VS
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 I
dyn
is depending of the PWM frequency f
PWM
and the required gate charge Q
Gate
of the external power mos transistor. The current can be estimated by the expression:
I
dyn
= 2 · f
PWM
· Q
Gate
An external power transistor with a gate charge of Q
Gate
= 160nC and a PWM frequency of f
PWM
= 20kHz re-
quires a dynamical supply current of I
dyn
= 6.4mA.
The total supply current consumption is I
VS
= 5.8mA + 6.4mA = 12.2mA.
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~150μH (I
peak
~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 V
VS
< 8V, increases the supply voltage at the VS pin and switches off
at V
VS
> 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 7.
VBAT
L1
D1
D2
C1
C2
VS
ST
VSTH
fST
=
-
+
L9904
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| L9904TR | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)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(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)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(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)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 |
| L9907N | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MOTOR BRIDGE FOR HEADLIGHT ADJUSTMENT |
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