Microinverter  

In residential photovoltaic systems Micro inverters are often used as an alternative to string inverters to perform the DC to AC power conversion at panel level helping maximize energy yield and mitigate problems related to partial shading, dirt or single panel failures. In a micro inverter there is a DC-DC converter - implementing Maximum Power Point Tracking (MPPT) - and a DC-AC inverter to shape current and voltage for injection into the AC grid. Data – including voltage, current and power generated - from all the micro inverters in the installation are collected by a concentrator and dispatched to a local or remote monitoring and control access point.

Our solution includes MDMESH power MOSFETs,  high-voltage,  galvanically isolated gate drivers, high-voltage silicon-carbide (SiC) diodes together with high-performance STM32 microcontrollers - providing a set of dedicated peripherals to help implement complex power conversion control algorithms. Metering ICs and a range of wireless and wired connectivity solutions including multi-standard Power line modems complete the solution.

microinverter block diagram

演示和培训资料

简报
Description Version Size
EEPROM 2 Mbit highest density memories 1.0 2 MB
Microinverter_marketing_pres 2.2 638 KB
ST products and solutions for solar energy 5.1 2 MB
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出版刊物和宣传资料

宣传册
Description Version Size
400/650 V MDmesh™ DM2: ST’s new MOSFET series with integrated fast-recovery body diode 1.0 334 KB
60, 80 and 100 V STripFET™ F7 MOSFETs 1.0 764 KB
Industrial-grade SiC diodes - 650V and low VF - to boost the performance of power converters 2.0 958 KB
ST Diodes Finder : the new app for Android and iOS 2.0 1 MB
Turnkey PLC chipset for smart-energy infrastructure 10.2017 775 KB
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选型指南
Description Version Size
EEPROM selection guide 2.0 1007 KB
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手册
Description Version Size
电源管理 2017版指南 09.2017 4 MB
Products and solutions for solar energy 1.0 1 MB
STM32F3 series - Mainstream 32-bit MCUs 17.09 2 MB
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Magazine Articles
Description Version Size
Innovative architectures for solar energy applications: st microinverter system solution 1.0 614 KB
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开发工具硬件
Software Development Tools

Power Transistors

型号 Description 价格
STB80N20M5 N-channel 200 V, 0.019 Ohm typ., 61 A MDmesh M5 Power MOSFET in D2PAK Package 4.441
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Protection Devices

型号 Description 价格
BZW50 5000 W TVS
P6KE 600 W TVS in DO-15
SMBJ 600 W TVS in SMB .35
SM6T 600 W TVS in SMB 0.078
SM15T Transil 1500W .78
1.5KE Transil 1500 W .65
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Power Management

型号 Description 价格
L6985F 38 V 500 mA synchronous step-down switching regulator with 30 uA quiescent current 1.1
L7986 3A step-down switching regulator 0.804
L6986F 38 V 1.5 A synchronous step-down switching regulator with 30 uA quiescent current 1.193
L7987 61 V 3 A asynchronous step-down switching regulator with adjustable current limitation 1.25
ST1S40 3A DC step-down switching regulator 0.76
L7985 2A step-down switching regulator
ST1S50 4A Monolithic synchronous step-down converter with high efficiency at light load 0.788
PM8851 1A Low Side Gate Driver with configurable asymmetric sink/source
PM8841 Single channel low-side gate driver
STGAP1AS Automotive galvanically isolated single gate driver 3.092
PM8834 4 A dual low side MOSFET driver 0.768
ALTAIR05T-800 Off-line all-primary-sensing switching regulator .91
ALTAIR04-900 Off-line all-primary-sensing switching regulator 1.05
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MEMS and Sensors

型号 Description 价格
STTS751 2.25 V low-voltage local digital temperature sensor
LM135 Precision Temperature Sensor 2.71
STLM20 Analog temperature sensor, ultra-low current 2.4 V, high precision
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Getting started with STM32F334 for digital power conversion Getting started with STM32F334 for digital power conversion

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