Q67006-A9341 데이터 시트보기 (PDF) - Infineon Technologies

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Q67006-A9341

Voltage-Current Regulator

Infineon Technologies 

TLE 4305

The TLE 4305 includes an independent voltage control and current control loop. The

internal schematic is shown in Figure 2. For IQ < IQmax the voltage control gets priority.

If the supply operates in the overcurrent protection mode, the current loop is active and

reduces the output voltage with constant output current IQmax. The output voltage/output

current curve is shown in Figure 5.

Both the current control loop and the voltage control loop are temperature compensated.

VQ

Voltage Regulator Active

VQ

Cross Over

Current Regulator Active

IQmax

IQ

AED02882

Figure 5 Current and Voltage Limit

The voltage or current loop regulator result defines the current into the opto isolator to

control the PWM duty cycle. The LED driver is fully integrated, no external components

are required.

Data Sheet

10

Rev. 2.2, 2008-11-17

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