What is power supply sequencing?

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.

Can a new energy storage traction power supply system improve regenerative braking energy utilisation?

To solve the negative sequence (NS) problem and enhance the regenerative braking energy (RBE) utilisation in an electrified railway, a novel energy storage traction power supply system (ESTPSS) is proposed in this study.

Which circuit accomplishes the power supply sequence?

Example of a circuit that accomplishes the power supply sequence Figure 2-11 shows an example of a circuit that accomplishes the power supply sequence. The DCDCs in the 3 systems are assumed to be switching regulators (DC/DC converters) or linear regulators (LDO). The DCDCs feature an enable (EN) pin that can control the ON/OFF of the output.

How can a power supply system provide continuous power without neutral sections?

In the new system, a power flow controller is adopted to compensate for the NS, and a super-capacitor energy storage system is applied to absorb and release the RBE. In addition, through the cooperation of each part, the proposed power supply system can provide continuous power without neutral sections.

Why is energy storage important in electrical power engineering?

Various application domains are considered. Energy storage is one of the hot points of research in electrical power engineering as it is essential in power systems. It can improve power system stability, shorten energy generation environmental influence, enhance system efficiency, and also raise renewable energy source penetrations.

How do you sequence power supplies?

A simple way to sequence power supplies is to delay the signal going to a regulator’s enable pin with passive components such as resistors, capacitors, and diodes, as shown in Figure 2. When the switch closes, D1 conducts while D2 is left open. Capacitor C1 charges, with the voltage at EN2 rising at a rate determined by R1 and C1.