scope:

This document, Part 4: Reference Designs, comprises reference designs for Power Class 0 Base Stations and Mobile Devices. Power Class 0 is the WPC designation for flat-surface devices, such as chargers, mobile phones, tablets, cameras, and battery packs, in the Baseline Power Profile (≤ 5 W) and Extended Power Profile (≤ 15 W).

Current Specification structure (introduced in version 1.2.1)

The Qi Wireless Power Transfer System for Power Class 0 Specification consists of the following documents.

Parts 1 and 2: Interface Definitions

Part 1: Primary Interface Definition

Part 2: Secondary Interface Definition

Part 3: Compliance Testing

Part 4: Reference Designs (this document)

NOTE WPC publications prior to version 1.2.1 were structured differently, and are listed in Section 1.2.2 below. In particular, the Low Power and Medium Power publications were divided into separate System Description documents. Beginning with version 1.2.1, the Low Power and Medium Power System Descriptions have been merged into the Specification structure shown in this section. Additionally, the terms Low Power and Medium Power have been replaced in the current Specification by the terms Baseline Power Profile and Extended Power Profile respectively.

Earlier Specification structure (version 1.2.0 and below)

Before release 1.2.1, the Wireless Power Transfer specification comprised the following documents.

System Description, Wireless Power Transfer, Volume I: Low Power, Part 1: Interface Definition.

System Description, Wireless Power Transfer, Volume I: Low Power, Part 2: Performance Requirements.

System Description, Wireless Power Transfer, Volume I: Low Power, Part 3: Compliance Testing.

System Description, Qi Wireless Power Transfer, Volume II: Medium Power.