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VN5160S-E 参数 Datasheet PDF下载

VN5160S-E图片预览
型号: VN5160S-E
PDF下载: 下载PDF文件 查看货源
内容描述: 用于汽车应用的单路高侧驱动器 [Single channel high side driver for automotive applications]
分类和应用: 外围驱动器驱动程序和接口接口集成电路光电二极管PC
文件页数/大小: 31 页 / 447 K
品牌: STMICROELECTRONICS [ ST ]
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VN5160S-E  
Application Information  
3.1.2  
Solution 2: a diode (D  
) in the ground line  
GND  
A resistor (R  
inductive load.  
=1k) should be inserted in parallel to D if the device drives an  
GND  
GND  
This small signal diode can be safely shared amongst several different HSDs. Also in this  
case, the presence of the ground network will produce a shift (600mV) in the input  
threshold and in the status output values if the microprocessor ground is not common to the  
device ground. This shift will not vary if more than one HSD shares the same diode/resistor  
network.  
3.2  
3.3  
Load dump protection  
D is necessary (Voltage Transient Suppressor) if the load dump peak voltage exceeds the  
ld  
V
max DC rating. The same applies if the device is subject to transients on the V line  
CC  
CC  
that are greater than the ones shown in the ISO 7637-2: 2004(E) table.  
MCU I/Os protection  
If a ground protection network is used and negative transient are present on the V line,  
CC  
the control pins will be pulled negative. ST suggests to insert a resistor (R ) in line to  
prot  
prevent the µC I/Os pins to latch-up.  
The value of these resistors is a compromise between the leakage current of µC and the  
current required by the HSD I/Os (Input levels compatibility) with the latch-up limit of µC  
I/Os.  
-V  
/I  
R  
(V  
-V -V  
) / I  
CCpeak latchup  
prot  
OHµC IH GND IHmax  
Calculation example:  
For V  
= - 100V and I  
20mA; V  
4.5V  
CCpeak  
latchup  
OHµC  
5kR  
180k.  
prot  
Recommended R  
values is 10k.  
prot  
3.4  
Open load detection in Off state  
Off state open load detection requires an external pull-up resistor (R ) connected between  
PU  
OUTPUT pin and a positive supply voltage (V ) like the +5V line used to supply the  
PU  
microprocessor.  
The external resistor has to be selected according to the following requirements:  
1. no false open load indication when load is connected: in this case we have to avoid  
V
V
to be higher than V  
; this results in the following condition  
OUT  
OUT  
Olmin  
= (V /(R +R ))R <V .  
PU  
L
PU  
L
Olmin  
2. no misdetection when load is disconnected: in this case the V has to be higher than  
out  
V
; this results in the following condition R <(V –V  
)/I  
.
OLmax  
PU  
PU OLmax L(off2)  
Because I  
may significantly increase if V is pulled high (up to several mA), the pull-  
out  
s(OFF)  
up resistor R should be connected to a supply that is switched OFF when the module is in  
PU  
standby.  
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