How to control power up and power down sequence?
We offer the easiest method to control the power up and power down sequence of multiple power supplies. Discrete solutions with a combination of resistors and capacitors can provide power-up sequencing, but by themselves cannot provide a reverse sequence during power down. The LM3880 and LM3881 simple power supply sequencers offer:
Can a power supply sequencer reverse power down?
Discrete solutions with a combination of resistors and capacitors can provide power-up sequencing, but by themselves cannot provide a reverse sequence during power down. The LM3880 and LM3881 simple power supply sequencers offer: We also offers a simple option to consider for power-up sequencing using reset ICs with adjustable timing.
Why is it important to use power sequencer?
Successfully powering up a system can be tricky. So can powering one off. Timing, order of events, and power levels need to be just right for proper system functionality and stability. Using power sequencer can also prevent unnecessary current draw while portions of the design sit idle, waiting for prerequisite systems to be powered.
What does the ucd90x power supply sequencer do?
The UCD90x family of digital power supply sequencers, also known as system health monitors, provides a comprehensive digital solution for complex power systems: Configurable power-up and power-down sequence control for up to 24 power rails based on timing and/or dependencies (rail and/or pin)
What does power supply sequencing do for power supply?
Simple power supply sequencing to power up and power down with ease. Flexible sequencing to configure, control, and monitor. Our digital power supply sequencers offer the benefits of PMBus and digital power without changing your power tree.
Why is it important to sequence power supplies?
In addition, sequencing the supplies staggers the inrush current during power-up, an especially helpful technique in applications operating from current-limited supplies.
Why do you need power supply sequencing for FPGAs?
Power-supply sequencing is required for microcontrollers, FPGAs, DSPs, ADCs, and other devices that operate from multiple voltage rails. These applications typically require that the core and analog blocks be powered up before the digital I/O rails, although some designs may require other sequences.