Ismartware launched its first USB PD fast charging protocol chip SW2303 a few months ago, and developed a 65W GaN fast charging reference design based on SW2303. Relying on the advantage in volume, 65W GaN fast charging reference design has attracted attention of industry insiders after it was reported. Recently, Ismartware developed a 100W GaN fast charging reference design based on SW2303. Let’s take a look at the features of this solution.

1.The appearance of Ismartware 100W single-port GaN fast charging solution

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

The appearance of Ismartware 100W single-port GaN fast charging reference design is square. The switching power supply has added a PFC power factor correction circuit. The USB-C output interface is welded on the power supply PCB plate with small PCB plates.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

The input end is full of filter elements, and three Yongming high-voltage aluminum electrolytic capacitors are used. The volume of the transformers is the same as that of PFC boosted inductor, and are symmetrically distributed on both sides of the PCB plate.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

In addition to the USB-C interface, the protocol plate is equipped with three pin headers, which are mainly used for debugging. The three solid capacitors beside them are used to output filtering.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

Two nano-semiconductor GaN power devices NV6125 are on the back of the PCB plate. One of them is used for PFC boost and the other is used for conversion of switching power supply. Two MOS transistors are in parallel in the synchronous rectification.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

Ismartware SW2303 single-port PD fast charging protocol chip. This is a highly integrated fast charging protocol chip with Type-C port or Type-A port, which supports some commom fast charging protocols, such as PD, QC, FCP, high voltage SCP, low voltage SCP, AFC, SFCP, and PE. It also supports two working modes, they are optocoupler feedback and FB Feedback. SW2303 integrates CV/CC control loop, Type-C interface logic, fast charging protocol controller, and many safety protection functions. With ACDC or DCDC and a few peripheral components, a complete high-performance Type-C port/Type-A port fast charging solution can be formed.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

The specifications of Ismartware SW2303

2.The test of Ismartware 100W single-port GaN fast charging solution

(1)Protocol detection and PDO message

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

ChargerLAB POWER-Z KT002 is used to detect the fast charging protocol of the USB-C interface, and it shows that the USB-C interface supports Apple2.4A protocol, Samsung5V2A protocol, and supports some fast charging protocols, such as QC3.0, QC2.0, AFC, SCP, MTK PE2.0, PD3.0 PPS.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

The PDO message shows that the solution supports five fixed voltage gears, they are 5V3A, 9V3A, 12V3A, 15V3A, and 20V5A, and supports PPS voltage gear, that is 3.3-21V 5A.

 

(2) Compatibility test

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

When Ismartware 100W GaN fast charging solution is used to charge Huawei llano 100W power bank, the voltage is 19.93V, and the current is 4.84A, and the charging power is about 96.55W. It enters 100W fast charging mode.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

When it charges Huawei iWALK 100W power bank, the voltage is 19.94V, and the current is 4.73A, and the charging power is about 94.4W. It enters 100W fast charging mode.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

When it charges Huawei HYPER JUICE 100W power bank, the voltage is 19.94V, and the current is 4.9A, and the charging power is about 97.8W. It enters 100W fast charging mode.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

When Ismartware 100W fast charging solution is used to charge Huawei Matebook, the voltage is 20.29V, and the current is 2.82A, and the charging power is about 57.2W. It enters USB PD fast charging mode.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

When it charges Apple iPad Pro, the voltage is 15.26V, and the current is 2.08A, and the charging power is about 31.81W. It enters USB PD fast charging mode.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

When it charges Apple iPhone 12, the voltage is 9.28V, and the current is 2.35A, and the charging power is about 21.85W. It enters 20W PD fast charging mode.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

When it charges Apple iPhone 12 Pro, the voltage is 9.28V, and the current is 2.5A, and the charging power is about 23.3W. It enters 20W PD fast charging mode.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

When it charges Samsung S20 Ultra 5G mobile phone, the voltage is 8.79V, and the current is 4.02A, and the charging power is about 35.35W. It enters PPS fast charging mode.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

When it charges nubia 5G gaming phone, the voltage is 8.99V, and the current is 3.89A, and the charging power is about 45.4W. It enters PPS fast charging mode.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

When it charges Meizu 17 Pro mobile phone, the voltage is 9.2V, and the current is 2.62A, and the charging power is about 24.18W. It enters MTK PE fast charging mode.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

When it charges BlackShark mobile phones, the voltage is 8.46V, and the current is 3.05A, and the charging power is about 25.8W. It enters USB PD fast charging mode.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

When it charges Xiaomi 10 Pro, the voltage is 8.81V, and the current is 2.43A, and the charging power is about 21.45W. It enters USB PD fast charging mode.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

When it charges Redmi K30 Pro, the voltage is 9.08V, and the current is 2.43A, and the charging power is about 22.11W. It enters USB PD fast charging mode.

Ismartware Has Launched 100W Single-Port GaN Fast Charging Reference Design Based on SW2303-askpower

When it charges Xiaomi 9 Pro, the voltage is 9.15V, and the current is 2.62A, and the charging power is about 24W. It enters USB PD fast charging mode.

Summary of www.chongdiantou.com

Since 2019, Ismartware has been working hard in the field of gallium nitride, high-density, high-power PD fast charging products, and has also achieved very gratifying results. It has become the forerunner of high-power gallium nitride PD fast charging solutions. Ismartware has launched 100W GaN fast charging solution, which provides a valuable reference for the development of high-power products of many fast charging product manufacturers.

The mature switching power supply combined with Ismartware SW2303 multi-protocol chip gives this 100W GaN fast charging solution a good performance. It can not only provide 100W charging power for high-power power banks and laptops, but also can achieve a full-speed fast charging for common high-power PD mobile phones.