Automotive LED Driver IC LITIX™ Power Flex TLD5541-1QV - test bench Input Current Feedback Loop

Open online SPICE simulator circuit link: atv_12V_lighting_TLD5541-1QV_testbench_Input_curr_loop.tsc

Input Current Feedback Loop with TLD5541-1QV

This model has limitations. It does
not include the driver output stage.
That is why we need to use ideal
switches (no bootstrap simulation
possible)

The PSpice model does not show all
features of the real device to keep the
simulation time in a reasonable range.

Implemented:
- Regulation Loops
- Current Limitation on the coil
- Digital and Analog PWM
- Soft Start Behavior
- Multi-Float Switch Application

NOT implemented :
- SPI interface
- Current consumption of IC
- Thermal Network
- Fault Handling
- Fault Reporting
- External Clock Sync
- Limp Home
- Spread Spectrum
- LDO Output

This test bench shows the control of the input current. Rin is
chosen in a way that when the input voltage (Vin) decreases
from 50V to 10V the input loop will become dominant and will
limit the current from the supply line. Because of this for some
period of time the circuit will not provide 1A to the LEDs.

For you individual test case, please modify the parameters in
the green configuration box on the left side.

{1. click here to set circuit parameters}
{2. click on "Run" to calculate components}
{3. click on "OK" and Simulate Transient }

{Controller Frequency [F]}
frequency:= 300k {use 200K ... 700K}