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.
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Development Tools
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Picture Part number Manufacturer Description ST MOSFET Finder ST MOSFET product finder application for Android and iOS 
ST-DIODE-FINDER ST Diode product finder application for Android and iOS 
ST-MCU-FINDER ST STM32 and STM8 product finder for mobile devices and desktops Part NumberMOSFET product finder application for Android and iOS
Diode product finder application for Android and iOS
STM32 and STM8 product finder for mobile devices and desktops
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MEMS and Sensors
Power Management
| Part number | Description |
|---|---|
| ALTAIR04-900 | Off-line all-primary-sensing switching regulator |
| ALTAIR05T-800 | Off-line all-primary-sensing switching regulator |
| L6985F | 38 V 500 mA synchronous step-down switching regulator with 30 uA quiescent current |
| L6986F | 38 V 1.5 A synchronous step-down switching regulator with 30 uA quiescent current |
| L7985 | 2A step-down switching regulator |
| L7986 | 3A step-down switching regulator |
| L7987 | 61 V 3 A asynchronous step-down switching regulator with adjustable current limitation |
| PM8834 | 4 A dual low side MOSFET driver |
| PM8841 | Single channel low-side gate driver |
| PM8851 | 1A Low Side Gate Driver with configurable asymmetric sink/source |
| ST1S40 | 3A DC step-down switching regulator |
| ST1S50 | 4A Monolithic synchronous step-down converter with high efficiency at light load |
| STGAP1AS | Automotive galvanically isolated single gate driver |
Power Transistors
| Part number | Description |
|---|---|
| STB80N20M5 | N-channel 200 V, 0.019 Ohm typ., 61 A MDmesh M5 Power MOSFET in D2PAK Package |
