Interleave – Maxim Integrated MAX15303 PMBus Command Set User Manual
Page 15
MAX15303 PMBus Command Set User’s Guide
Page 15 of 52
INTERLEAVE
ADDR1 pins, unless a new value of INTERLEAVE has been written to the User Store. The value of the
ADDR0 and ADDR1 pin resistance is measured only once during initialization (power-up).
Because the MAX15303 uses one of two different PWM “speed modes” depending on the switching
frequency selected (see
), the INTERLEAVE command will show unexpected
results if switching frequency crosses the 475kHz speed-mode boundary after initialization.
The MAX15303 includes enhancements beyond the PMBus specification INTERLEAVE command
functionality:
• Setting the “Number In Group” to zero will be interpreted by the MAX15303 as 16 possible
phases. This allows phase-spreading in 22.5º increments.
• The low nibble of the high byte of INTERLEAVE contains the “Group ID Number” per the
PMBus specification, but this is a value that has no function and no dependent parameters in
either the MAX15303 device or in the PMBus specification. As a result, it is not necessary to
set a “Group ID Number.” Both nibbles of the high byte of INTERLEAVE can be used
separately or together as “scratchpad” data, if desired.