Power Electronics

Zolt/Avogy Laptop Charger Plus

Published: 04/02/2016
Product code: SP16249
Price: EUR 6990
Applications: Mobile & Consumer

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Introduction
Summary
Similar reports

Zolt is a subsidiary of Avogy which develops and manufactures GaN on GaN discrete semiconductor devices and modules.

We have been surprised by the technical choice made by Avogy. Discover which substrate technology is used and who is the manufacturer of the Wide Band Gap (WBG) device.

Zolt Laptop Charger Plus is a 70-watt notebook charger which is also able to charge simultaneously two other USB mobile devices. Despites its small size (93x34mm) and its three outputs, Zolt guarantees a max skin temperature of 63°C without efficiency losses.

The system integrates three electronic boards. A first board, is dedicated to the AC/DC conversion. On the second board, the Avogy’s Patented Resonant Switching technology allows the charger to work at very high switching frequencies. The use of Avogy high breakdown voltage transistor makes possible to increase the switching frequency thereby to reduce storage elements. Then the buck conversion stage is performed by transistors from Infineon. A last board is equipped with a MCU which analyzes and controls the optimal current delivered to each USB port. This makes the charger to be compatible with nearly 90% of the laptop computers.

Based on a complete teardown analysis of the Zolt Charger, the report provides the bill-of-material (BOM) and the manufacturing cost of the charger. A quick analysis of the conversion topology is also performed.

The physical and technical characteristics of the Avogy transistor are revealed.

Overview/Introduction

Executive Summary
Company Profile : Avogy
Reverse Costing Methodology

Physical Analysis

Global View of the Packaging
Packaging Opening
Views and dimensions of the charger
Charger Disassembly
Electronic Boards
- Main Board

Global View
High Definition Photo
Components Markings
Components Identification
- RF Board
- AC/DC Board

Avogy 150-00028 Physical Analysis
Package Characteristics and Marking
Die Analysis : Dimensions, Process, substrate, cross section
Die Process Flow
Die Manufacturer

Cost Analysis

Estimation of the cost of the PCBs
Estimation of the Cost of the Plastic Parts
BOM Cost – Main Board
BOM Cost – USB Board
BOM Cost – AC/DC Board
BOM Cost – Housing
Material Cost Breakdown
Accessing the Added Value (AV) cost
Main Board Manufacturing Flow
Details of the Housing Assembly & Functional Test Costs
Added Value Cost Breakdown
Manufacturing Cost Breakdown

Estimated Price Analysis

Estimation of the Manufacturing Price
Estimation of the Selling Price