參數(shù)資料
型號(hào)： TLE7242-2G
廠商： INFINEON TECHNOLOGIES AG
元件分類(lèi)： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO28
封裝： GREEN, PLASTIC, DSO-28
文件頁(yè)數(shù)： 34/50頁(yè)
文件大?。?/td> 1210K
代理商： TLE7242-2G
TLE7242-2G
Overview
Data Sheet
4
Rev. 1.0, 2008-07-09
– Open load in on state
– Open load in off state
– Short to ground
– Test complete bit - indicates that fault detection test has completed
Control loop monitor capabilities
– The average current measurement over the last completed PWM cycle of each channel can be accessed
via SPI.
– The PWM duty cycle of each channel can be accessed via SPI
– The auto zero values used to null the offsets of the input amplifiers can be accessed via SPI
Required External Components:
– N-Channel Logic level (5V) MOSFET transistor with typical Ron
≤ 100 m (e.g. BSO604NS2)
– Recirculation diode (ultrafast)
– Sense resistor (0.2
for 1.2A average output current range)
Green Product (RoHS compliant)
AEC Qualified
1.2
Applications
Variable Force Solenoids (e.g. automatic transmission solenoids)
Other constant current solenoids
– Idle Air Control
– Exhaust Gas Recirculation
– Vapor Management Valve
– Suspension Control
1.3
General Description
The TLE7242 2G IC is a four channel low-side constant current control predriver IC. Each channel can be
configured to function either in on/off mode or in constant current mode by setting the appropriate MODE bit in SPI
message #7.
1.3.1
On / Off Mode Operation
For On/Off operation, the POSx and NEGx pins must be connected to the circuit in either of the configurations
shown in Figure 1. If the sense resistor is included, the load current can be monitored by the microcontroller via
a SPI command. The open load in on state fault detection feature is disabled in on/off mode.
Note: An external flyback clamp is required in this configuration otherwise the IC may be damaged.
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