DC960A: 5V @ 2A, 5.5 ~ 60V in, Buck

1 января 2018

Demonstration circuit 960 is a high voltage, current mode DC/DC step down converter featuring the LTC3824 in a small 10-pin MSOP package.

The board operates from a Vin range of 5.5 ~ 60 V and outputs 5V @ 2A. The converter uses a P-ch MOSFET for the main switch resulting in a low parts count design. Operating frequency is set to 200 kHz with the option to accept a synchronized external clock. A soft-start feature controls the output voltage slew rate at start-up, reducing current surges and voltage over-shoots. Burst mode operation that improves the efficiency at light loads can be enabled with a jumper. The demonstration board has been laid out with the option for adding a second switching MOSFET to facilitate higher output currents.

This board is suitable for a wide range of industrial control systems and particularly suitable for 12V/42V automotive applications and 48V telecom power supplies.