AN78646 - Integrated Power Manager using PSoC® 1
Last Updated: 03/18/2013
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Version: *A
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| AN78646 describes the key concepts of power management, including voltage sequencing, fault detection, voltage and current monitoring, real-time trimming, and I2C host communication. The associated example project delivers a fully integrated power management system solution. |
Introduction
Computing and communication systems are complex and comprise multiple subsystems. Each subsystem can have its own voltage domain, which is also known as a power rail. Each power rail needs to be powered up and monitored individually. This creates a need for power management. Because this activity is a health indicator of the system, it cannot be incorporated in any of the subsystems. For this reason, a dedicated chip is used.
Power management consists of the following parts:
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accurate and reliable voltage sequencing
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rapid power rail fault detection
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voltage and current monitoring of power rails to optimize power consumption
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real-time trimming for closed-loop control of power converters (voltage regulators)
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in-system margining
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fault/event logging in EEPROM
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communication with the host controller using I2C, SMBus, or PMBus
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Related Application Notes:
Domain Tags: Analog, Amplifiers, Comparators, PGA, Analog Internal Routing, Analog Mux, Analog internal routing techniques, Data Converters, ADC, DAC, Voltage Reference, Communication, Serial Comm, I2C, Digital, Combinational logic, LUT, Logic gates, Shift Reg, Timing or PWM, Counter, PRS, PWM, Timer, Display Technologies, Charcater LCD, PSoC Resources, Interrupts, Pins / Ports, Power Management, Power or Thermal Control, Power Supervisor, Voltage Margining, Voltage Sequencing, Voltage Trimming
Market Segment Tags: Communications & Telecom, Cable Modem & DSL, Enterprise WAN, LAN Switches, Other Communications & Telecom, Public Infrastructure - Switching & Transport, Service Provider Routers & Switches, Wireless Basestation, Wireless LAN, Computers & Peripherals, Desktops, LED Projector, Notebooks, Servers, Workstations, Consumer Equipment, Digital Set-Top Box, Digital Televisions, Large Appliances, Mobile Smart Phone, Small Appliances, Tablet PC, Industrial Equipment, Elevators & Escalators, HVAC & Refrigiration
Related Knowledge Base: ADC, Amplifier, Analog, Analog Bus, Counter, DAC, EEPROM, EzI2Cs, Flash, I2C, Interrupt, ISR, MiniProg, Mux Bus, Power Management, PSoC Designer, PWM, System Level Design, Timer, User Modules, Comparator, DELSIG, Delta Sigma ADC, MiniProg3, SAR
Spec No: 001-78646;
Sunset Owner: KERI;
Secondary Owner: GULA;
Sunset Date: 11/25/12
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