Electronic Costing & Technology Experts 21 rue la Nouë Bras de Fer 44200 Nantes France Phone : +33 (0) 240 180 916 email : info@systemplus.fr www.systemplus.fr October 2013 - Version 1 written by David Le Gac DISCLAIMER : System Plus Consulting provides cost studies based on its knowledge of the manufacturing and selling prices of electronic components and systems. The given values are realistic estimates which do not bind System Plus Consulting nor the manufacturers quoted in the report. System Plus Consulting is in no case responsible for the consequences related to the use which is made of the contents of this report. The quoted trademarks are property of their owners. 2013 by SYSTEM PLUS CONSULTING, all rights reserved. 1
1. Overview/Introduction 3 Executive Summary Differences Unveiled Reverse Costing Methodology Company Profile : Enphase Main Features 2. Physical Analysis 10 Views and Dimensions of the Inverter Inverter Opening Connectors of the Inverter Electronic Board Electronic Board Top Side Global View Electronic Board Top Side High Definition Photo Electronic Board Top Side Markings Electronic Board Top Side Components Identification Electronic Board Bottom Side Global View Electronic Board Bottom Side High Definition Photo Electronic Board Bottom Side Components Identification 3. Cost Analysis 42 Accessing the BOM Estimation of the cost of the PCB Estimation of the cost of the Enphase/Fujitsu MB87S3070 ASIC BOM Cost Electronic Board Estimation of the cost of the Housing Parts BOM Housing Material Cost Breakdown Accessing the Added Value (AV) cost Electronic Board Manufacturing Flow Details of the Electronic Board AV Cost Details of the System Assembly AV Cost Added Value Cost Breakdown Manufacturing Cost Breakdown 4. Estimated Price Analysis 73 Estimation of the Selling Price Functional Cost Breakdown Comparative Table between M215 and M250 Contact 79 2013 by SYSTEM PLUS CONSULTING, all rights reserved. 2
The M250 Photovoltaic Inverter is the 4 th Generation micro-inverter released by Enphase. It produces 250 Watts peak AC output power with MPPT to optimize efficiency in difficult solar conditions. The M250 maximizes the energy production of 60-cell solar modules up to 300W, the DC circuit is isolated and insulated from ground, so no External Ground Electrode Conductor (GEC) is required for the micro-inverter The M250 uses Electrolytic Capacitors and is fully filled with Resin to protect the components from the weather constraints and to improve the thermal dissipation. 2013 by SYSTEM PLUS CONSULTING, all rights reserved. 3
This Reverse Costing analysis has been conducted in several phases : The initialization of the analysis Pictures of the elements to be studied. Identification of the components. Description of the material in the SYScost+ software Creation of an estimation project of the studied board with SYScost+ software. Construction of the Bill of Material (BOM). Assessing the material Searching for the price of each reference among distributors and manufacturers. Assessing the cost of the PCB and of the unaccounted references (unknown by distributors) The BOM is valued with SYScost+ : price simulation according to the requested quantities. Assessing the assembling and test phases Assembly and test lines are modeled with the SYScost+ software. The assembly and tests costs are estimated. Production cost & selling price Estimation of the production cost & selling price. Report A report is edited. SYScost+, is a software tool developed by SYSTEM PLUS CONSULTING to calculate the cost of electronic boards. More information on the software can be found at www.systemplus.fr. 2013 by SYSTEM PLUS CONSULTING, all rights reserved. 4
Top Housing Cover Back Housing Cover Note : the Back Cover Housing is completely filled with resin. AC Connector AC Cable DC Cables DC Connectors (Male & Female) Heat Shrink Tubing (x2) DC Cable Support AC Cable Support 2013 by SYSTEM PLUS CONSULTING, all rights reserved. 5
2013 by SYSTEM PLUS CONSULTING, all rights reserved. 6
2013 by SYSTEM PLUS CONSULTING, all rights reserved. 7
2013 by SYSTEM PLUS CONSULTING, all rights reserved. 8
The Reverse costing analysis represents the best cost/price evaluation given the publically available data, completed with industry expert estimates. These results are open for discussion. We can re-evaluate this circuit with your information. Please contact us: 2013 by SYSTEM PLUS CONSULTING, all rights reserved. 9