How can smart small appliances upgrade to Type-C charging port?

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How can smart small appliances upgrade to Type-C charging port? [Copy link]

 

At present, the charging interfaces of smart small appliances on the market are still USB Micro, AC, DC interfaces, etc. This year, with the EU's order, on December 24, 22, the European Council finally approved the bill of "unifying charger interfaces within the EU". This means that by 2024, USB type-c interfaces will become a must-have for a series of electronic devices, such as mobile phones, tablets, headphones and other smart small appliances.

According to CCTV News, the European Parliament passed a new regulation on October 4, requiring all new mobile phones, tablets and other portable smart devices to use USB Type-C charging ports from the end of 2024. It is estimated that this move can reduce 11,000 tons of electronic waste each year.

Since most Apple products currently use the Lightning interface, market analysts believe that Apple will be one of the companies most affected by this new regulation. Most directly, Apple's next-generation mobile phone product, the iPhone 15, may be forced to use the USB Type-C charging interface.

According to Apple analyst Ming-Chi Kuo, Apple could switch the charging port to USB Type-C starting with the iPhone 15 in 2023, and then convert Air Pods and other accessories. This would enable Apple to switch many of its affected devices to USB Type-C before the EU directive takes effect.

The new EU regulation has sparked heated discussions among Chinese netizens. Some netizens said, "It is worth promoting in the global market and supporting a unified charging interface." Others said, "Will Apple's type-c interface be specially made so that Android devices cannot use it?" "Will the price increase if the interface is changed?"

Apple once opposed it, but the product has changed

The 2023 iPhone 15 will be equipped with a Type-C interface as a charging port

According to the Securities Times, the EU has repeatedly asked European countries to legislate to unify the type-c interface of mobile phones. The EU has been discussing this proposal for more than 10 years. Apple is the biggest opponent of this bill, and its reason for opposition is that the bill stifles innovation.

Apple once said that 1 billion Apple products are equipped with lightning interfaces. Once forced to adopt type-c, more electronic waste may be generated, which is inconsistent with the EU’s original intention of environmental protection and Apple’s innovative temperament.

At present, Android devices have basically completed the unification of type-c charging interface, but most Apple products, such as iPhone, have been using lightning interface since iPhone 5 in 2012. In fact, compared with Apple's lightning, type-c is superior in almost all aspects, and is compatible with many existing non-Apple devices, and has faster data transmission and charging speeds.

In the past few years, we have seen the popularity and speed of USB Type-C ports, especially in the fields of power tools and smart homes, such as electric curtains, smart desk lamps, electric rails, handheld power tools, etc., which have been upgraded from traditional charging methods to fast charging through USB-C ports. By using the USB-C port, the speed of battery charging is greatly improved. For example, some power tools can complete more than half of the charging in 15 minutes. After the launch of the PD3.1 standard, the upper limit of fast charging power reached 240W. This change enables USB Type-C to provide sufficient charging power for more devices, including some large electronic devices, IoT devices, communication and security equipment, automobiles and medical equipment that require higher power charging. For example, the high power of 240W (48 V 5A) can even meet the charging needs of two-wheeled electric vehicles. The future development trend, early layout of products, how to upgrade the traditional interface of electronic equipment to a USB Type-C interface or even to an interface that supports 240 W fast charging has become a new proposition.

1: Type-c interface

The Type-C interface is a new type of USB interface that can support higher data transmission speeds.

Market Opportunities

There are two common types of fast charging standards on the market. One is initiated by industry associations, such as USB PD and UFCS; the other is initiated by mobile phone and chip companies, such as QC, VOOC, SCP, FCP, AFC, PE, etc. The commonly used protocol standards in overseas markets are USB PD, QC, and Samsung AFC fast charging protocols.

In the EU's solicitation of future unified fast charging standards, these standards have the opportunity to be submitted to the EU for reference, but only 1-2 of them will be adopted and implemented. Among them, the competition between USB PD and UFCS is the most eye-catching, one from the United States and the other from China.

There are precedents in 5G standards, such as TDD and FDD, where both technologies have developed side by side. Whether USB PD and UFCS can both enter the EU recommended fast charging standards is also the focus of the industry in the future.

The market is full of challenges, but it also brings opportunities. Let's take a look at the latest developments of these two dark horses.

On May 25, 2021, the USB-IF Association launched the latest fast charging standard USB PD3.1. According to the information released by the USB-IF Association, three fixed voltage levels of 28V, 36V and 48V and three adjustable voltage levels (Adjustable Voltage Supply, AVS) were added to the extended power range EPR.

After briefly introducing the power of PD fast charging, let's introduce how to design TYPE-C interface charging for consumer electronic products.

Devices that support PD must use cc logic chips. USB Type-C currently supports up to 20V/5A. In this case, it must correspond to USB PD. In other words, since an additional PD chip is required, please do not assume that a USB Type-C connector can support 20V/5A.

1: Consumer electronics that only require 5V voltage input.

If you only need the regular 5V output of the PD adapter, you only need to pull down 5.1K resistors on the PIN pins CC1 and CC2 of the TYPE-C female terminal to achieve 5V input to power the device.

CC1 vs CC2

USB-PD relies on these two pins to identify the power device and request power supply from the power supply. In a simple design, CC1 and CC2 can each independently pull down a 5.1k resistor to ground. For embedded designs that require high-power supply or high-definition video transmission functions, a USB-PD control chip must be used. (The USB-C interface on the Raspberry Pi 4 has CC1 and CC2 connected together and share a 5.1k resistor pulled down to ground. Because it uses one less 5.1k resistor, it is incompatible with many USB Type-C chargers, and the power supply fails.)

2: Consumer electronics products that need to support 9V/12V/15V/20V or above power supply

Devices that support PD must use cc logic chips. USB Type-C currently supports up to 20V/5A. In this case, it must correspond to USB PD. In other words, since an additional PD chip is required, please do not assume that a USB Type-C connector can support 20V/5A.

Overview

LDR6328 is a USB PD protocol and Qualcomm Quick Charge (QC) protocol developed by Leder Technology Co., Ltd.

A communication chip compatible with USB PD and QC developed by the company. The input end is mainly connected to the adapter of PD and QC, and the output end is configured with fixed output.

The LDR6328 takes power from an adapter that supports USB PD and QC protocols and then supplies power to the device. For example, you can configure the adapter

Output the required power to power the wireless charger device.

2. Features

◇ Use SOP-8 package

◇ Compatible with USB PD 3.0 specification, support USB PD 2.0

◇ Compatible with QC 3.0 specification, support QC 2.0

◇ Compatible with Samsung AFC protocol

◇ Can automatically trick PD into outputting 5V, 9V, 12V, 15V, 20V voltages, QC/AFC outputting 9V, 12V voltages

3. Application

◇ All devices that require adapters (support USB PD and QC, Samsung AFC protocol) for power supply

◇Fascia guns, electric fans, lighting, Bluetooth speakers, air pumps, cameras and other consumer electronic devices

Summary: The chip has a simple periphery, a mature and stable solution, and special compatibility treatment has been made for domestic adapters. It is very suitable for small household appliances to be converted to TYPE-C interface. Many well-known domestic manufacturers are using it. The solution is stable, mature and reliable. Welcome to leave a message to request a sample DEMO.

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