5v Regulator

Embedded designers today are facing increasing pressures to increase battery life and features of the tender at the same time more. Just look at the rapid increase in functionality in the mobile handheld computers for verification. It became clear that types of batteries are not improving the rate needed to meet these requirements. This puts pressure on suppliers of silicon outright offer better performance at lower power. As if this dilemma was not ambitious enough, the designers to meet the strict requirements posed to the market by reducing design cycles.

In addition, environmental movements require a reduction of waste battery, which results in embedded systems that require fewer battery changes. There are also government regulations (Example: Energy Star) around the world to reduce standby current in the devices. The next generation of embedded systems will require very low power active and sleep while simultaneously increasing the amount of flexibility and programmability required to meet time to market.

Besides the lower power consumption, it is also necessary to lower voltage system. A few years ago, the standard for the minimum operating voltage is 3.3V. Today, it is 1.8V. Charting this trend, it is unrealistic to extend this trend in the range of under-voltage equipment of tomorrow. This opens the possibility of building designs based PSoC with a single AA battery (including the end of life voltage is about 0.9 V). Although some models based PSoC can operate at 1.8V now, often, the analog

performance degrades with these low voltages. For the battery powered handheld designs that require good performance analog systems that can operate at voltages below 1 volt and still meet the performance requirements of analog, offers the possibility of moving to a single AA battery. This translates into lower costs for consumers and fewer batteries.

How to achieve sub-volt operation?

under-voltage operation can be achieved when integrated PSoC device has an integrated boost converter is capable of stimulating the input voltage (eg 0.9 V input voltage) at a voltage higher level system (eg 3.3). In this mode, it is important that the noise of the boost converter does not affect the performance of analog devices. Figure 1 shows the connections at the system for an integrated boost converter that is part of a PSoC Programmable System-on-3 chip from Cypress Semiconductor.

The 3 and 5 families are PSoC PSoC field-programmable PSoC digital blocks that have embedded programmable and configurable analog blocks. These devices are designed to provide flexibility and programmability of the user while consuming very little sleep and active. The buildings also offer precise performance analog (16-bit precision 20-bit). Families are supported by PSoC Creator, an IDE that can be used to quickly build models from beginning to end - all the way to select the device, configuration / programming of digital and analog devices, the configuration of supply system, the firmware development, debugging and programming.

The presence of an integrated boost converter that can accept input voltages in volts has the following advantages:

1. Ability to operate the system from a single AA battery.

2. Ability to provide a system voltage of guaranteed minimum, even with a supply voltage ranging

3. Possibility to use the output voltage pulse to perform other circuits in the system that needs higher voltage. Example: liquid crystal glass,

Sensor circuits, etc.

Voltage scale

With a wide supply voltage range extends from 1.8 V (0.9 V with boost enabled) to 5.5 V provides maximum flexibility to

the user for the following reasons:

1. voltage ranges of the battery can extend the norm for most ordinary batteries by their end.