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System Diagram for PMBus™ Interface
5V
EXT_BIAS
SCL
SDA
SCL
BCM in a VIA
Package
Host
PMBus™
SDA
SGND
ADDR
SGND
The controller of the BCM in a VIA package is referenced to the low voltage side signal ground (SGND).
The BCM in a VIA package provides the Host PMBus system with accurate telemetry monitoring and reporting, threshold and
warning limits adjustment, in addition to corresponding status flags. The standalone BCM is periodically polled for status by the host
PMBus. Direct communication to the BCM is enabled by a page command. For example, the page (0x00) prior to a telemetry inquiry
points to the controller data and page (0x01) prior to a telemetry inquiry points to the BCM parameters.
The BCM enables the PMBus compatible host interface with an operating bus speed of up to 400kHz. The BCM follows the PMBus
command structure and specification.
BCM® in a VIA Package
Page 25 of 43
Rev 1.1
01/2018
VICOR [ VICOR CORPORATION ]
