Cypress PowerPSoC MPPT太阳能充电参考设计

Cypress 公司的PowerPSoC系列集成了可编程的SoC技术,功率电子控制器和开关器件,可以替代传统的MCU,系统IC以及其周围的数量众多的分立元件,使得PowerPSoC解决方案容易使用在照明应用上. PowerPSoC包括1A 2MHz功力FET,滞后控制器,电流检测放大器, PrISM/PWM调制器,以创建完整的LED功率管理.而PowerPSoC用于太阳能对铅酸电池充电的参考设计采用最大功率点跟踪(MPPT)算法,实现最佳的电池充电过程,从而延长电池寿命,降低电池维护和平和提高系统性能.本文介绍了PowerPSoC系列的主要特性,架构方框图,逻辑方框图, 带RGBA色彩混合配置的LED照明框图和MPPT太阳能充电器控制器的方框图,指标和详细电路图和材料清单.

The PowerPSoC family incorporates programmable system-on-chip technology with the best in class power electronics controllers and switching devices to create easy to use power-system-on-chip solutions for lighting applications.

All PowerPSoC family devices are designed to replace traditional MCUs, system ICs, and the numerous discrete components that surround them. PowerPSoC devices feature high
performance power electronics including 1A 2 MHz power FETs, hysteretic controllers, current sense amplifiers, and PrISM/PWM modulators to create a complete power electronics solution for LED power management. Configurable power, analog, digital,and interconnect circuitry enables a high level of integration in a host of industrial, commercial, and consumer LED lighting applications.

This architecture integrates programmable analog and digital blocks to enable the user to create customized peripheral configurations that match the requirements of each  individual application.

Additionally, the device includes a fast CPU, Flash program memory, SRAM data memory, and configurable I/O in a range of convenient pinouts and packages.

The PowerPSoC architecture, as illustrated in the block diagrams, comprises five main areas: PSoC core, digital system, analog system, system resources, and power peripherals which include power FETs, hysteretic controllers, current sense amplifiers,and PrISM/PWM modulators. Configurable global busing combines all the device resources into a complete custom system. The PowerPSoC family of devices have 10-port I/Os that connect to the global digital and analog interconnects, providing access to eight digital blocks and six analog blocks.

PowerPSoC主要特性:

■ Integrated Power Peripherals

Four internal 32V low side N-Channel power FETs

• RDS(ON)– 0.5Ω for 1.0A devices

• Up to 2 MHz configurable switching frequency

Four hysteretic controllers

• Independently programmable upper and lower thresholds

• Programmable minimum on/off timers

Four low side gate drivers with programmable drive strength

Four precision high side current sense amplifiers

Three 16-bit LED dimming modulators: PrISM, DMM, and PWM

Six fast response (100 ns) voltage comparators

Six 8-bit reference DACs

Built-in switching regulator eliminates external 5V supply

Multiple topologies including floating load buck, floating load buck-boost, and boost

■ M8C CPU Core

Processor speeds up to 24 MHz

■ Advanced Peripherals (PSoC® Blocks)

Capacitive sensing application capability

DMX512 interface

DALI interface

I2C master or slave

Full-duplex UARTs

Multiple SPI masters or slaves

Integrated temperature sensor

Up to 12-bit ADCs

6 to 12-bit incremental ADCs

Up to 9-bit DACs

Programmable gain amplifiers

Programmable filters and comparators

8 to 32-bit timers and counters

Complex peripherals by combining blocks

Configurable to all GPIO pins

■ Programmable Pin Configurations

25 mA sink on all GPIO and function pins

Pull up, pull down, high Z, strong, or open drain drive modes on all GPIO and function pins

Up to 10 analog inputs on GPIO

Two 30 mA analog outputs on GPIO

Configurable interrupt on all GPIO

■ Flexible On-chip Memory

16K Flash program storage 50,000 erase and write cycles

1K SRAM data storage

In-System Serial Programming (ISSP)

Partial Flash updates

Flexible protection modes

EEPROM emulation in Flash

■ Complete Development Tools

Free development software: PSoC Designer 5.0™

Full featured, In-Circuit Emulator and Programmer

Full speed emulation

Complex breakpoint structure

128 kBytes trace memory

■ Visual Embedded Design

LED based express drivers

Binning compensation

Temperature feedback

■ Applications

Stage LED lighting

Architectural LED lighting

General purpose LED lighting

Automotive and emergency vehicle LED lighting

Landscape LED lighting

Display LED lighting

Effects LED lighting

Signage LED lighting

■ Device Options

CY8CLED04D0x

• Four internal FETs with 0.5A and 1.0A options

• Four external gate drivers

CY8CLED04G01

• Four external gate drivers

CY8CLED03D0x

• Three internal FETs with 0.5A and 1.0A options

• Three external gate drivers

CY8CLED03G01

• Three external gate drivers

CY8CLED02D01

• Two 1.0A internal FETs

• Two external gate drivers

CY8CLED01D01

• One 1.0A internal FET

• One external gate driver

■ 56-pin QFN Package

图1.PowerPSoC架构方框图


图2.CY8CLED04D0x 逻辑方框图


图3.带RGBA色彩混合配置的LED照明框图

LED Lighting with RGGB Color Mixing Configured as Floating Load Buck Converter

图4.带RGBA色彩混合驱动外接MOSFET的LED照明框图

MPPT太阳能充电器控制器

Cypress’ MPPT Solar Charge Controller is a battery charger and load controller for standalone PV (photovoltaic) systems. This controller features a smart tracking algorithm that maximizes energy harvest from solar panels. The controller also prevents over charge or deep discharge. It provides automatic load control for the external load connected to the controller board.

This optimized battery charging process increases battery life, minimizes battery maintenance, and improves system performance.

Maximum power point tracking, referred to as MPPT, is an electronic system that operates the photovoltaic modules to produce maximum power. MPPT varies the electrical operating point of the modules and enables them to deliver maximum available power. The additional power harvested increases the current available for battery charging. MPPT can be used in conjunction with a mechanical tracking system, but the two systems are completely different.

This is a PowerPSoC reference design for solar-based lead acid battery charging by employing a maximum power point tracking (MPPT) algorithm. It implements an optimized battery charging process which prolongs battery life, minimizes maintenance of the battery, and improves system performance.

MPPT Solar Charge Controller Block Diagram


图5.MPPT太阳能充电器控制器方框图

MPPT太阳能充电器控制器指标:


图6.MPPT太阳能充电器控制器外形图(1)

图6.MPPT太阳能充电器控制器外形图(2)

图7.MPPT太阳能充电器控制器电路图(1)

图8.MPPT太阳能充电器控制器电路图(2):功率部分:采用太阳能电池板对铅酸电池充电

图9.MPPT太阳能充电器控制器电路图(3):栅驱动器和互连电路

图10.MPPT太阳能充电器控制器电路图(4): PowerPSoC连接图

MPPT太阳能充电器控制器材料清单(BOM):