SLUSB72D March 2013 – April 2021 UCD3138064
UCD3138x provides three separate modes of current sharing operation.
The simplified current sharing circuitry is shown in the drawing below. The digital pulse connected to SW3 transforms SW3 into a pulse-width-modulated current source. Details on the frequency and resolution of this feature are in the digital power fusion peripherals manual.
|CURRENT SHARING MODE||FOR TEST ONLY, |
ALWAYS KEEP 00
|Off or Slave Mode (3-state)||00||00 (default)||0||0||0|
|Off or Slave Mode (3-state)||00||10||0||0||0|
|Analog Bus or Master||00||11||0||1||0|
The period and the duty of 8-bit PWM current source and the state of the SW1 and SW2 switches can be controlled through the current sharing control register (CSCTRL).