48V Dimmable LED strings and strips driven by linear LED Controller IC BCR601 with voltage feedback to primary side and Active Headroom Control using MOSFET BSP716N

Open online SPICE simulator circuit link: lighting_led_48V_BCR601_feedback_primary_application_circuit.tsc

48V Dimmable LED strings and strips driven by linear LED Controller IC BCR601
with voltage feedback to primary side / Active Headroom Control

BCR601 is a linear LED controller IC regulating the LED current with an external driver transistor.
It supports either NPN bipolar transistors or N-channel MOSFETs to cover a wide LED current .
The LED current is fully scalable by dimensioning an external resistor at MFIO pin.

A unique feature of BCR601 is to provide feedback to the primary side via an optocoupler to control
the output voltage of the primary side converter, e.g. XDPL8218. The integrated control loop
minimizes the voltage overhead and power dissipation of the external driver transistor. This capability,
coupled with the adjustment of voltage overhead by external configuration according to application
needs, leads to efficient LED systems.

AC line ripple suppression, analog dimming option and various protection features round up this
device for LED drivers allowing for flicker-free light and longevity of LEDs.

- Change simulation time:
"Analysis->Transient: Start - End Display"
- Double click on the green window to enter design criteria
- Click on "Run" and Simulate Transient