The standard is good, but sometimes you need more. For example USB Type-C is a such example; USB Type-C aims to found to be used at high speed data to transmit the standard interface with power transmission, need a cable only, replace the requirement that needs much root cable. This is very significant, partial reason depends on electronic equipment manufacturer wishing to pay each equipment of carry to offer cable for them, because consumer is in,still handle a large number of by unused the “ on drawer, ambry and table machine reserves ” cable.

 

But, to the standard undertakes standardizing and do not mean all equipment achieving found a capital is identical. The agreement that supports USB 3.x power supply still makes the supplier can use so called supplier to define message mode (VDM) carries configuration channel (Configuration Channel, CC) and equipment correspond. Use VDM, the supplier can exchange the information that standard of power supply of more than USB 3.0 defines. It can be used at all sorts of things, but also mean manufacturer to be able to correspond with the equipment of themselves directly. This kind of equipment appears as the standard on any other equipment, but brought additional value to make to the client, if use,be the client of the mural type adapter that its mobile phone designs technically.

 

Receive VDM to be used in USB controller, will increase appeal of USB Type-C connective further, implementation such as is faster charge or enter facility reserve or assist the function such as mode, use certain join to accept blame USB agreement with can repeating.

 

These character will found new application for USB, be in especially power supply respect. Continue it is OK that drive exceeds processing of low power comsumption to mean complete more works with fewer power, and can amount to 1) of graph of 100 W (now as a result of USB connective general power, this open various possibility. But should realize this one potential, need can come true estimated USB controller.

 

Precedence: Preferential sort

Highest: Highest

Lowest: Lowest

Mode Of Operation: Working mode

Current: Electric current

Default USB Power: Acquiescent USB power source

Nominal Voltage: Rated voltage

Configurable: Can configure

Maximum Current: The biggest electric current

Up To 1.5 A: Amount to 1.5 A

Sink/source Can Be Swapped, power Direction No Longer Fixed: Collect / the source is OK crossing-over, power source direction is secured no longer.

Graph 1: USB Type-C power source configures option

 

 

Power supply standard and existing batteries charge the standard works together, but additional profit was brought when use VDM. What be worth to be carried most is, what its support connects high is fast charge function, be based on choice Snapdragon processor, provide higher power thereby, offer for the smartphone faster charge periodic. Other manufacturer also can be obtained batch use this technology. A few kinds when using at present charge agreement, if the TurboPower of Motolora charges,technology, couplet sends the Pump Express of the division and SamSung suit to charge quickly oneself technology.

 

When using compatible power source adapter, the smartphone thinks silent to inferior power is installed, but when it and him manufacturer / when the charger of approval is used together, user general be able to faster charge. Although the specifications of different manufacturer is different, but standard of USB 3.1 PD arrives in 5V between 12V can provide the power that is as high as 27W.

 

To help the program with proper consumer preference, USB developer forum (USB IF) already went to USB charger standard and Logo program extension include USB fast charger. Of the standard of charger support USB PD 3.0 of this program certification but process designing power source (PPS) is characteristic.

 

The partial appeal of PD is supporting the equipment that carries USB power supply and power source to undertake negotiation at it, offer needs n only. This includes to need the facility of fewer power than acquiescent setting, will mean power source to be able to think more equipment provide electric power, power source is shared between equipment, and what offer for equipment is more than it is electric power. For example, monitor can offer power source and communication channel for notebook computer and exterior hard disk, support jotter to visit hard disk drive through monitor thereby.

 

 

The batteries that USB interface offers charges nowhere is not in the function, will be manufacturer of mobile power source all the time for years be used. Although mobile power source offerred a kind of convenient way, additional electric energy is gotten below the circumstance that is far from socket, but the mobile power source that charges to will need new generation to the change of power transmission from batteries. The alterable power that supportive PD provides introduced the complexity of certain level, the design of mobile power source that has with what use simple current power supply to manage IC or adjuster normally is incompatible.

 

To support all functions of PD, those who include use VDM is fast charge, manufacturer of mobile power source changes need to the design an intelligence controller will provide the function that provides through USB PD. Install the LC709501F of dark beauty semiconductor for example. This height is based on Flash compositively can configure equipment assemble all needs functions, manage the power source that lithium ion batteries provides through many USB interface. The graph shows the applied give a demonstration that is a model 2 times.

 

Power Bank: Mobile power source

Charger: Charger

USB Detection: USB detects

USB-PD Policy Engine: USB-PD politic agreement

VDM Support: Support VDM

Port Controller: Port controller

Battery: Batteries

Graph 2: The typical and mobile power source of use LC709501F applies

 

Pass the firmware that semiconductor develops Ansenmei, configuration also can expand use VDM mode, because this manufacturer can increase additional value, if carry out,charge quickly technology.

 

It is direct drive is exterior the power source that MOSFET can expand with offerring, and its switch control implement the voltage that generation needs, arrive from 5V 12V. Through choosing appropriate exterior MOSFET, supportable all PD are characteristic, include to charge quickly 3 high pressure are special charge port (HVDCP)A kind. Buck/Boost develop attacks dislodge power source has port of USB Type-C dual role (DRP) and USB BC1.2, and still include batteries condition character, can use 4 LED to express batteries n. Use the character of USB 3.x, smartphone application process can offer more the information about mobile power source, if charge condition, charge cycle and fill discharge time to wait.

 

Semiconductor offers Ansenmei evaluate board enter the firmware with LC709501F and the rightest choice with helping manufacturer design guide. For example, FW02 supports input of a Micro-B, type-A supports to output on two passageways, charge quickly 3.0 HVDCP, boost is started automatically and exterior Boost IC is used at farther power output, and the Type-C that FW05 support contains DRP and Type-A output, use as like us Boost is started automatically and the IC of exterior step up is same. More firmware version are in development, in order to support other configuration. Graph 3 it is the functional graphic representation that FW05 offers.

 

Graph 3: The characteristic graphic representation that LC709501F FW05 offers

 

Show batteries n through supporting 4 LED directly, manufacturer need not add an additional small controller, saved stock sheet (BoM) cost and reduce design complexity. Evaluate board (LC709501EVA05GEV) of model of parts of an apparatus carries out FW05 and support 4 kinds of pattern, if pursue,4 are shown.

 

Function: Function

2-port (QC3.0&5V) Output: Double port Port (QC3.0&5V) output

Type-C DRP: Port of Type-C dual role (DRP)

Output: Output

Input: Input

Smartphone: Smartphone

Adapter: Adapter

Graph 4: 4 kinds of mode of FW05

 

 

Of USB Type-C and PD introduce will bring huge profit for consumer and manufacturer, but how does because develop personnel,need study receive new character, and the requirement that raises to engineering group, need period of time is adjusted.

 

Develop a mobile power source, support PD completely, include many output and charge quickly, will need a kind of new controller, develop for core with USB 3.x. LC709501F is the one part of a series of equipment, in order to make USB PD simpler, more develop personnel to be received easily, and it is offerred what surmount hard is compositive degree. Its static electric current exceeds low, only 15 µA, sum the character that does not need additional small controller, explain it can be offerred all these functions, use up least batteries n at the same time.

 

The ability that configures controller through mode of supplier definition message is opposite at the function another advantage of less controller, make manufacturer can differ dissimilation their product, accord with USB IF standard completely still at the same time.