Lattice Semiconductor introduced a new power management architecture. The new in-system upgradable, star topology power management architecture can be used across a wide range of circuit boards requiring over 12 power supply rails. In addition, Lattice also released two new application notes for their Platform Manager devices that will enable engineers to quickly adopt the new architecture.
Power management functions include supply sequencing, monitoring, hot-swap control, reset and other supervisory signal generation. The complexity of power management functions increases significantly when the number of circuit board power supplies increases. The solution often requires the use of multiple power management devices. As a result, designers are usually forced to partition the overall power management task and implement it using distributed algorithms in multiple devices, which is costly and time consuming. The inadequacies of this approach become apparent only during the board debug stage, forcing board re-spin and costly project delays. The integrated power management approach made possible by the Platform Manager devices, on the other hand, reduces cost and increases board reliability.
Lattice’s two application notes describe unrestricted access to power supply status indicators and the ability to control all board management functions. Engineers are easily able to modify their algorithm to meet unforeseen power management requirements and minimize the need for a board re-spin.
Lattice Platform Manager Application Notes
Scalable Centralized Power Management with Field Upgrade Support
The app not describes how the Platform Manager device can be used as a centralized controller to implement flexible sequencing and precision monitoring of up to 36 power supply rails on a circuit board. It discusses the use of a star topology and fast serial interface to provide a seamless, scalable solution to manage up to 36 power supply rails using additional Lattice Power Manager II devices.
Fail-Safe Sequencing During Field Upgrades with Platform Manager
This application note describes how to enable field updates to the power management algorithm with a fail-safe sequencing backup that restores board operation if the field update procedure is interrupted.
More info: Lattice Power Manager Devices