Programmable power-good, or general-purpose input/output (GPIO), pins are available with each channel. The LTC2972 connects with other power system managers to coordinate sequencing and fault management of more than two rails. PMBus-compatible commands over an I2C/SMBus interface are used for flexible programming and data readback of the power system. Configuration is accomplished through the LTpowerPlay development environment, which supports all of Analog Devices’ DPSM products (see Figure 5). Once the internal EEPROM is programmed with the needed application-specific configuration, no further software coding is required for autonomous operation.
FPGAs are spreading to all kinds of electronic systems, even taking over the job of ASICs, but they come surrounded by a complicated power system. Analog Devices has a wide range of DPSM products to help manage this complexity. If you’ve never tried DPSM before, the LTC2972 provides an easy introduction to their ability to remove the power system complexity on digital processing boards.
About the author:
Pinkesh Sachdev is an applications engineer for power system management (PSM) products at Analog Devices –www.analog.com