Speaking of gallium nitride power devices, the mainstream solution is single tube and seal, gallium nitride single tube with a specially optimized controller, which has been widely used in fast charging of flyback architecture. However, in high-power power supplies, higher frequencies are usually used to reduce the size of the transformer, and correspondingly, the combined gallium nitride power chip is often used in most high-frequency switching power supplies due to the advantages of built-in drivers and simple applications at high frequencies.
Taigao Technology is the world's first company with both gallium nitride (GaN), silicon carbide (SiC) and gallium arsenide (GaAs) chip technology innovation solutions, Taigao Technology's R & D team originated from the international rectifier company (IR), as early as 2010 to inherit IR in the international leading gallium nitride achievements continue to develop and sell advanced gallium nitride chips.
Taigao Technology has more than ten years of experience in the research and development of gallium nitride chips, and the gallium nitride chips developed by it have been widely adopted by more than 60 large international companies in Europe and the United States. Techtech's Global Design Center is located in Chicago, USA, and Kolkata, India, with R&D and design divisions, with more than 50 R&D personnel worldwide, of which more than 80% of R&D have doctoral degrees.
Techtech for the 100-watt power supply market launched a 210W Gallium nitride power supply module solution, which is based on PFC + LLC circuit topology design, the use of Taigao four TP44200NM gallium nitride devices, the entire DEMO three-dimensional only 70 * 46 * 31.5mm, power density up to 2.07W / cm, to achieve high efficiency, high power density, low temperature good application.
Let's take a look at how the power supply solution of Taigao Technology is designed with the charging head network, and how the test results perform.
First, the appearance of Taigao Technology 210W Gallium Nitride power supply scheme
Taigao Technology 210W Gallium Nitride Fast Charging Scheme adopts PFC+LLC architecture, fixed voltage output, suitable for notebook power supply, industrial power supply, travel arrangement and other purposes, and can also be used with secondary buck for multi-port PD3.1/ PD3.0 fast charger.
The power module adopts the welding method of four PCB board combinations, and the diagonal two small boards are connected to support the upper and lower two large boards.
The module length measured using a vernier caliper was 70.05mm.
The width is 45.94mm.
The thickness is 31.51mm. The module volume is about 101.4cm and the power density is 2.07W/cm.
The size of the module held in the hand is intuitive.
In addition, the measured weight is about 156g.
Second, Taigao Technology 210W Gallium Nitride power supply scheme analysis
At a glance at the input board, the device with emi filter circuit soldered on the right side and the synchronous rectifier circuit and solid filter capacitor on the left side.
Delay fuse 5A 250V.
10D561K varistors.
Common mode inductor two-wire winding to filter out EMI interference.
Safety X capacitance 0.68μF.
A close-up of another common-mode inductor.
At one end of the module, you can see the red film filter capacitor, the PFC boost inductor, and the PFC boost inductor is pasted with two thermal pads, and the right side of the thermal pad is the rectifier bridge.
The rectifier bridge uses the Wald WRLSB80M, which uses two evenly shared temperature rises. This soft bridge can reduce the diode junction capacitance to achieve very little harmonic oscillation through a softer recovery curve and smoother shutdown characteristics. The selected LSB package has good heat dissipation characteristics, helping the medium and large wattage adapters to improve reliability, and a single one can do 60W+.
The other board is equipped with APF boost circuit and an LLC switching power supply primary side related controller and a closed gallium nitride chip on the left and right sides, respectively.
The PFC boost controller uses TI Texas Instruments UCC28056, which has ultra-low no-load losses and provides excellent efficiency over the load range in accordance with the requirements of the IEC61000-3-2 current harmonic standard.
The PFC boost switch tube adopts two High Tech TP4420DNM to share the temperature rise equally. As a high-power Superior GaN power chip with a rated voltage of 650V, TP4200NM, The TP4200NM can meet the needs of the medium-power mobile device and consumer power electronics markets, accelerate the elimination of traditional silicon chips with low-speed switching frequencies, and seize the medium-power charging market.
This 180mΩ TP44200NM is available in a small 5*7mm PQFN package with patented integrated thermal dissipation technology for high-efficiency, high-power density power systems, and its products have a 50% increase in current carrying capacity.
The Superior GaN power chip integrates GaN Mosfet with GaN driver and protection control functions to achieve simple use, small size, fast speed, and higher power performance. The TP44200NM differs from competitive solutions in that it eliminates the need for an additional 9V to 30V power supply to power the GaN driver inside GaN Mosfet alone, saving engineers the trouble.
Tyco Tianrun G5S6506Z 650V/6A Silicon Carbide Schottky Power Diode, DFN5*6 Package, Maximum Operating Temperature 175°C, for PFC Boost Rectifier.
The LLC controller uses TI Texas Instruments UCC256404, which is an LLC resonant controller with ultra-low power consumption, ultra-quiet standby operation and high voltage start-up, specifically designed for use with PFC controllers to provide a complete power system with minimal external components.
For the design of the LLC architecture, the LLC half-bridge switch tube also uses two High TP44200NM gallium nitride devices, and the TP44200NM does not need to be matched with the additional GaN Mosfet half-bridge driver chip that competitors need to add. The innovative design of the TP44200NM greatly reduces the limitations on the main control chip, which greatly reduces the design difficulty for engineers to improve product reliability.
The CHIP Y capacitor comes from Terry Xiang, model TMY1222M, with small size, light weight and other characteristics, very suitable for use in high-density power products such as gallium nitride fast charging.
The synchronous rectifier controller uses ON Semiconductor NCP4306 and supports CCM, DCM, and QR modes of operation for flyback or LLC applications.
The four synchronous rectifier tubes are packaged in Vian 040N08HS, DFN5*6 SMD package.
Two 25V 680μF solid capacitors for synchronous rectifier output filtering.
There is a high-voltage filter electrolytic capacitor in the middle of the module side, which is hollowed out in the corresponding plate area to reduce the thickness of the module, and the left side of the small board is connected with an insulated tube.
The high voltage filter electrolytic capacitor is ketucon brand, wrapped in high temperature tape insulation, and the specification is 420V 120μF.
The other end features a resonant capacitor and a resonant inductor.
The resonant capacitor comes from JURCC Gateway Electronics, 333J1KVDC.
On the other side, there is a power supply capacitor and a transformer, which is also equipped with a thermal pad.
The power supply capacitor specification of the PWM main control chip is 25V 220μF.
Third, Taigao Technology 210W Gallium Nitride power supply scheme part of the test data
Taigao Technology 210W Gallium Nitride power supply module can work at full load in the 90V-264V range, the output no-load voltage range on the board is 21.21-21.23V, the output load voltage range is 21.20-21.21V, and the output voltage changes slightly with the load, and there is a good voltage regulation rate.
The 210W Gallium Nitride power module can output up to 29V voltage through the modification of the feedback resistor, and can also be used with a secondary buck for multi-port PD3.1 fast charge charger.
The output is fully loaded with an input voltage of 110Vac and the measured ripple noise is 180mV.
In the input voltage of 220Vac environment full load output, the measured ripple noise is 196mV, accounting for 0.93% has a good index.
Summary: 1, in the 90Vac input voltage range, the full load output efficiency is 93.4%; of which 220Vac input, the full load output efficiency is 95.6%. 2. The maximum standby power consumption is less than 150mW, which meets the application requirements of energy efficiency level 6.
Test conditions: different voltage input, full load output, indoor environment 15 °C test, aging 60 minutes.
Summary: 1, Taigao Technology 210W Gallium Nitride fast charging module in a 90V input environment, full load output condition 60 minutes, PFC drive gallium nitride TP44200NM temperature of 83.1 °C; LLC drive gallium nitride TP44200NM temperature of 93 °C; LLC transformer temperature of 80.1 °C; output synchronous rectifier temperature of 82.7 °C.
2. In the 220V input environment, 60 minutes under full load output conditions, PFC drives gallium nitride TP44200NM temperature is 80.6°C; LLC drives gallium nitride TP44200NM temperature is 89.3°C; LLC transformer temperature is 97.4°C; output synchronous rectifier temperature is 75.7°C.
For engineers engaged in power electronics design, the TP44200NM Superior GaN gallium nitride power chip provides better product design ideas for 100W-240W applications, such as computer all-in-one computers, TVs, game consoles, electric scooters, electric bicycles and other electric vehicle chargers, game laptops and other equipment chargers. The TP44200NM is now in high volume production and can be ordered immediately from tico's distribution partners.
The TICO R&D team is committed to developing disruptive solutions for wide bandgap technology, with many innovative patented technologies, chip IP and its own intellectual property rights of test equipment, which can significantly reduce the complexity, volume, weight and power consumption of client system-level solutions.
Due to the continuous friction between China and the United States and can not be solved in the short term, the domestic flat replacement of the chip has been mentioned to the height of the national strategy, and Taigao Technology, as a domestic gallium nitride power device company, is committed to jointly promoting the development of the domestic chip industry; accelerating the layout of domestic power chips for overseas power chips. The device selection of Taigao's high-tech Gallium nitride power supply solution has promised customers to optimize to 100% domestic production; to avoid the shortage of quantity, price increase and even market collapse when customers buy non-domestic chips.
"Technov, make design simple" is the ideal of Tech Tech, we are committed to making it easier for engineers to design through a sophisticated layout, making products more cost-effective and reliable, and our Superior GaN technology brings more possibilities for new solutions that are more efficient, smaller and more reliable.
Charging head net summary
Traditional 100-watt power supplies are large and bulky, not only occupying space, but also torturing people. Taigao Technology's power supply scheme based on its own four TP44200NM Superior GaN power chip design gives full play to the advantages of gallium nitride, and realizes the miniaturization of the module while achieving the output power of 210W, which is both small and high power, and perfectly solves the two major pain points of the traditional 100-watt power supply.
Taigao Technology 210W Gallium Nitride Power Module Reference Design, using the high-efficiency architecture of PFC+LLC, the controller adopts the UCC28056 and UCC256404 of the well-known TESA Instruments, with teco TP44200NM Gallium Nitride device, can obtain high conversion efficiency (95% @110Vac & 95.6% @220Vac, full load state), can reduce the heat dissipation requirements of power products and reduce product weight. The operation officer of Taigao Technology said that before the end of March, 100W/150W/240W multi-port charger solutions will be launched, and these solutions will be launched together with other domestic brand chips.
In addition, not limited to the 100-watt DC power output, this power supply reference design can also flexibly design secondary buck circuits at the output according to customer needs, and achieve multiple interfaces and different voltage output support to meet flexible/reliable/personalized needs.