参数资料
型号: TLE8242
厂商: INFINEON TECHNOLOGIES AG
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, PQFP64
封装: GREEN, PLASTIC, LQFP-64
文件页数: 25/77页
文件大小: 1580K
代理商: TLE8242
Data Sheet
31
Rev. 1.0, 2009-02-25
TLE8242
Functional Description and Electrical Characteristics
5.8
Current Profile Detection
The TLE8242 will detect current profiles due to the change in inductance caused by the opening/closing of
solenoid valves. Examples of the types of waveforms seen in this instance are shown in Figure 15 and Figure 16.
Examples of waveforms that fail the Current Profile Detection test are shown in Figure 17 and Figure 18.
Figure 15
Current Profile Diagram - Waveform Showing Valve Movement
Figure 16
Current Profile Diagram - Waveform Showing Valve Movement with Non-Zero Threshold in
Zone 2
Measured Current
(Differential Voltage )
A/D Samples
Zone 1
Zone 3
Timeout for Failure
PASS
Time Out
Detect Interrupt
OUTx Voltage
Zo
ne
2
Time Out Timer
A/D Samples
Timeout for Failure
PASS
Time Out
Detect Interrupt
OUTx Voltage
Time Out Timer
Measured Current
(Differential Voltage)
3
Zone
Zo
n
e
2
1
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