Today, I will share which components are used in the grid-connected solar micro-inverter solution from Renesas.
First component: Renesas RA6T2 MCU
The Renesas RA6T2 MCU is designed on a 240MHz Arm® Cortex®-M33 core to reduce bill of materials (BOM) cost while increasing performance. Furthermore, the RA6T2 MCU has a built-in amplifier whose gain can be set according to the input voltage range, and integrates external analog components such as a comparator to detect abnormal voltage input and overcurrent. In addition, this product model adopts high-resolution PWM, which can realize high-precision control of DC/DC and DC/AC conversion.
Second component: Renesas RAA211250
The voltage regulator of this solution selects Renesas RAA211250, which supports an input voltage range from 4.5V to 30V and an adjustable output voltage. It can provide a continuous output current up to 5A and has excellent load and line regulation performance. Use peak current mode control architecture. Its PWM switching frequency is programmable to provide the best balance between transient response and efficiency. This model also supports PFM operation and DEM to maximize light load efficiency, and also supports an externally biased LDO input to further reduce power consumption across the entire load range. The regulator also features internal loop compensation circuitry to reduce external parts count and BOM cost.
The third component: Renesas PS8352AL2 optocoupler
The design of the simulation isolation amplifier circuit part of this scheme uses the Renesas PS8352AL2 optocoupler, which is specially designed for current and voltage sensing. It integrates high-precision ΔΣA/D converters, GaAIAs LEDs with high-speed response and high luminance efficiency, and high-precision D/A converters with high common-mode transient immunity (CMTI) and high linearity (non-linearity).
The fourth component: PS9402 optocoupler isolator
The PS9402 optocoupler isolator of this solution is designed for high common-mode transient immunity (CMR), high output current and high switching speed, which integrates a GaAlAs LED on the input side and a photodiode on the output side, Signal processing circuitry and power output transistors with desaturation detection and active Miller clamping for added circuit safety.
In addition to the above components, the Renesas grid-connected solar micro-inverter solution also uses a series of high-performance power semiconductor products such as MOSFETs, IGBTs and drivers, including RBN75H65T1FPQ-A0 IGB, RBN75H65T1FPQ-A0 IGB, ISL89163 MOSFET drivers, etc. components.
Overall, the Renesas grid-connected solar micro-inverter solution can significantly improve power conversion efficiency. Help the application of green energy!
If you would like to know the specific parameters and prices of the components in the Renesas grid connected solar micro inverter solution mentioned above, please contact us directly：