Reference Design For Three-Section AC Industrial EV Charger

The designs are adaptable to varied market wants, providing options tailor-made for each residential and business charging purposes. 

Microchip Expertise has launched a versatile and scalable Electrical Automobile (EV) Charger Reference Design to help the worldwide adoption of electrical automobiles. This design goals to speed up the time to marketplace for EV chargers by offering producers with a complete answer that integrates a variety of parts, primarily sourced from Microchip itself. These parts embody microcontrollers, analog front-ends, reminiscence, connectivity modules, and energy conversion models, all of which streamline the combination course of for quicker growth and deployment of EV charging options. 

One of many key choices is the Three-Section AC Industrial EV Charger Reference Design, which is especially fitted to business and public charging stations. This design helps as much as 22 kW of energy with bidirectional charging capabilities and includes a modular structure. It’s designed to function robustly, even in difficult environments, and features a Graphical Consumer Interface (GUI) with a Skinny-Movie Transistor (TFT) display screen and contact enter for user-friendly operation. The reference design is constructed to be modular, cost-efficient, and dependable, assembly the stringent requirements of UL 2231. Its strong person interface is designed to face up to harsh circumstances, whereas the built-in OCPP and ISO 15118 protocols guarantee seamless and safe communication, lowering the time required for growth. 

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The design additionally contains an AC vitality metering operate that makes use of the ATM90E32 for exact energy measurement and reporting, which minimizes the processing load on the microcontroller and simplifies the manufacturing course of via automated calibration. Along with its modular structure, the reference design incorporates onboard relays and drivers to help bi-directional charging, with built-in security options to guard customers from potential hazards. Complete connectivity choices, together with Wi-Fi, GSM/LTE, and Ethernet, allow safe distant administration and communication by way of OCPP 1.6/2.0.1, with further help for 2 safe BLE connections. The design additionally includes a safe boot loader, firmware replace capabilities, and board-to-board communication to reinforce safety.

Key parts of the reference design embody the ATSAMA5D27-WLSOM1 System-On-Module (SOM) with a high-performance 32-bit Arm® Cortex®-A5 processor, offering as much as 1% vitality measurement accuracy with automated calibration. The design is supplied with a sturdy TFT display screen for the GUI, helps NFC fee, and contains security options corresponding to Protecting Earth and Impartial (PEN) detection, residual present detection, and earth fault detection. The reference design can also be suitable with quick DC chargers (L3) and helps the most recent safety requirements, together with OCPP 2.0.1, ISO 15118, and PKI, making certain a safe and environment friendly charging answer for a variety of purposes.

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Microchip has examined this reference design. It comes with a invoice of supplies (BOM), schematics, meeting drawing, printed circuit board (PCB) format, and extra. The corporate’s web site has further knowledge concerning the reference design. To learn extra about this reference design, click on right here.