This sequencer and voltage monitoring device is intended for use in any application with multiple rails that require a specific configuration or series of triggers. TPS38700S-Q1 has a maximum of six enables that can be independently configured or triggered in any sequence through the use of I2C.

In this EVM, the TPS38700S-Q1 is used in tandem with TPS389006. The TPS389006-Q1 uses its sequence logging feature to monitor and assign timestamps/log for the power rails turning on and off. Through the SYNC pin, TPS38700S-Q1 is able to detect the status of the voltage monitoring channels of the TPS389006, and can use this information to verify proper sequencing. This means the sequencer will know the state of all monitor channels and can ‘wait’ until the channel status changes before sending out another signal, ensuring further sequencing accuracy.

This EVM connects a single TPS38700S-Q1 to a TPS389006. However, in other applications, the TPS389006 SYNC feature allows for communication across multiple devices. If more than 6 rails require monitoring, multiple TPS389006 ICs could be connected and sequenced (ie. if 18 Rails need sequencing, 3 TPS389006 ICs can be used).