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參數(shù)資料
| 型號： | TLE4203S |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 6 A, PSFM7 |
| 封裝： | PLASTIC, TO-220, 7 PIN |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 100K |
| 代理商： | TLE4203S |
TLE 4203
Semiconductor Group
5
1998-02-01
Circuit Description
Input Circuit
The control inputs consist of TTL and CMOS-compatible Schmitt triggers with hysteresis.
Buffer amplifiers, controlled from these stages, convert the logic signal into the form
required for driving the power output stages.
Output Stages
The output stages consist of two push-pull C stages. Using protective circuits for limiting
the power dissipation makes the outputs short-circuit proof to ground and to supply
voltage throughout the entire operating range. Positive and negative voltage peaks,
which occur when switching inductive loads, are limited by integrated power diodes.
Monitoring and Protecting Functions
The IC is protected against thermal overloads by a temperature protecting circuit.
In addition an internal circuit ensures that all output transistors are blocked for supply
voltages below operating range.
A monitoring stage logic for each output stage transistor detects whether the relevant
transistor is active and in this case for sink operation (source operation) prevents the
corresponding source transistor (sink transistor) from being turned on. Direct cross-over
currents are effectively prevented with this method.
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