Preface
Electricity has become an indispensable resource for daily life and industrial development. The various electronic devices we use, such as mobile phones, computers, home appliances, etc., all require a stable power supply to function properly. Residential and commercial facilities, on the other hand, typically provide alternating current (AC), which periodically changes in voltage and polarity. Electronic devices, however, require direct current (DC), a type of electrical current that has a stable voltage and does not change direction. In order to solve this power supply problem, an AC-DC converter is required.
The 2024 (Spring) Asia Charging Exhibition was held in Shenzhen as scheduled, and at the same time, the fast charging conference was also held simultaneously in the exhibition, and a number of well-known fast charging chip companies took the stage to deliver wonderful speeches, and the representatives of these companies explained in detail to the participants the latest charging technology progress and how to use innovative chip solutions to improve charging efficiency and safety with their rich expertise. Among them, the industry's well-known fast charging chip companies Yichong, Yingjixin and OPEI announced the latest AC-DC package solution at the conference. These packages provide a competitive solution for the current market demand for high efficiency and high power density.
AC-DC Nesting Scheme
The following rankings are in no particular order, in alphabetical order of the company.
CPS is easy to flush
AZVS protocol
Yichong launched the AZVS solution for AC-DC, which is composed of AZVS IC CPS9001, fast charging protocol chip CPS8841 and synchronous rectification controller CPS9901.
CPS9001 is an AZVS IC that achieves zero-voltage detection through auxiliary windings, and compared with the CCM+QR architecture, the AZVS solution can bring a dropout voltage difference of nearly 100V, which can bring about an efficiency improvement.
At the same time, for 30-45W/45-65W GaN encapsulated products, engineers can adjust the EMI by adjusting the resistors of turn-on and off, bringing more convenience to engineers to adjust EMI.
CPS9050/CPS9050 is a flyback controller chip with a frequency of 240KHz, which basically covers GaN encapsulation applications, and supports CCM-QR frequency reduction control, built-in high-voltage start-up, supports low working current at low load, has negative voltage/current sensing to minimize common source inductance, and has a wealth of protection mechanisms. The CPS9050/CPS9050 are available in two different packages, DFN 5*6 and DFN6*8.
It is matched with a 120V synchronous rectification IC CPS9901, which can work in ZVS/CCM/DCM/QR mode, built-in self-power supply technology, supports high-side/low-side working mode, is compatible with the general pin interface on the market, and can work at a frequency up to 400KHz, and adopts SOT23-6 package.
Injoinic
At this fast charging conference, Yingjixin Company grandly launched a series of new chip products and demonstration solutions. The charging head network will bring a detailed interpretation of these results.
Chip introduction
IP2006H
IP2006H is a general-purpose multi-modal flyback controller IC for applications up to 100W, with a withstand voltage capability of up to 65V and the ability to eliminate the need for LDOs in the 5-20V output range. The chip supports advanced jitter technology, which optimizes conduction performance, especially in rectification, by jitter near frequencies and trough turn-ups. It also features balanced input/output compensation to ensure stability over a wide range of inputs and outputs.
Compared with traditional analog AC-DC controllers, IP2006H offers a wide range of configuration options, such as drive voltage, operating frequency, and various protection thresholds, which can be configured once via OTP programming. In addition, it supports a variety of operating modes and protection mechanisms, including multi-modal operation such as limiting frequency QR (unlocked valley), CCM+ limiting frequency QR (unlocking valley), and LL CCM+ HL limiting frequency QR (locking fixed valley).
IP2002/IP2008
The IP2002/IP2008 series are synchronous rectifier controllers that operate with IP2006H and Simplest Switch series flyback converters.
IP2002 is a synchronous rectifier controller IC for output voltages below 12V, encapsulated with 65V high-performance SGT, compatible with high-side/low-side operation, DCM/CCM operation, and has a wide range of configuration options. The IP2008 is a flyback synchronous rectifier controller chip suitable for 20-28VPD output.
IP2073
IP2073 is the Simplest Switch series flyback converter launched by Yingjixin, which is a packaged power switch controller that supports output power below 65W.
IP2073 integrates high-voltage power tube, start-up circuit, self-supply circuit and current sampling function, multiplexes the primary side winding as the detection winding, eliminates the VCC power supply winding and does not need an external current sampling resistor, does not need an auxiliary winding winding, and the transformer only needs two windings, which greatly simplifies the circuit design and complexity.
Demo introduction
IP2006H general-purpose multi-modal with synchronous rectifier chip IP2008 can cover almost all applications from 30 to 100W, and Yingjixin provides extremely rich protocols for customers to choose, and then show the relevant combination DEMO.
单C口 45W demo方案
The following is a single-C-port 45W fast charging solution launched by Yingjixin, using IP2006H universal multi-modal with synchronous rectifier chip IP2008 and fast charging protocol chip IP2736, with a size of 30.5x30.5x29mm, compact size, external CaseCode structure depletion GaN HEMT, and support for a variety of fast charging protocols.
Single C-port 65W special-shaped demo solution
The following is a single C-port 65W fast charging solution launched by Yingjixin, which adopts IP2006H general multi-modal with synchronous rectifier chip IP2008 and fast charging protocol chip IP2723TH, supports full voltage continuous full power output, meets EMI grounding test requirements, size is 46x46x22mm, compact size, external enhanced GaN HEMT, and supports a variety of fast charging protocols.
Single-port 65W ultra-thin demo solution
The following is a single C-port 65W fast charging solution launched by Yingjixin, which adopts IP2006H universal multi-modal with synchronous rectifier chip IP2008 and fast charging protocol chip IP2723TH, low-voltage input power derating to 40W max, using PCB plate transformer design scheme, achieving ultra-thin design, size of 74x39x8mm, external enhanced GaN HEMT, and supporting a variety of fast charging protocols.
双C口 35W demo方案
The following is a dual C-port 35W fast charging solution launched by Yingjixin, using two IP2006H universal multi-modal with two synchronous rectifier chips IP2008 and dual USB-C fast charging protocol chips IP2738, external SJ-MOSFET, dual AC-DC parallel current sharing output in single port mode, the size is 46x39x20mm, and supports a variety of fast charging protocols.
双C口 65W demo方案
The following is a dual C-port 65W fast charging solution launched by Yingjixin, using two IP2006H universal multi-modal with synchronous rectifier chip IP2008, dual USB-C fast charging protocol chip IP2738 and two synchronous step-down controller chips IP6550, external enhanced GaN HEMT, any single port supports 65W full blood output, the size is 65x30x28mm, and supports a variety of fast charging protocols.
2C1A三口 65W demo方案
The following is a 2C1A three-port 65W fast charging solution launched by Yingjixin, which uses two IP2006H universal multi-modal with synchronous rectifier chip IP2008, fast charging protocol chip IP2726, IP2736 and two synchronous step-down controller chips IP6550, external enhanced GaN HEMT, any C port supports 65W full blood output, the size is 52x41x32mm, and supports a variety of fast charging protocols.
单A口 33W demo方案
The following scheme uses Yingjixin Simplest Switch series flyback converter IP2073, a synchronous rectifier converter chip with mos and a single A port fast charging protocol IP2002TH ICIP2233, using single-sided PCB design, double-winding transformer design, minimalist peripheral circuit, low cost, and supports a variety of fast charging protocols.
单C口 30W demo方案
The following scheme is composed of Yingjixin Simplest Switch series flyback converter IP2073, a synchronous rectifier converter chip with mos encapsulated IP2002TH and a fast charging protocol chip IP2736, using single-sided PCB design, double-winding transformer design, minimalist peripheral circuit, low cost, and support for a variety of fast charging protocols.
OPEC
EVM7010A/B
OPEC brought us the all-new Sling Forward at the 2024 Asia Fast Charging Conference Converter (SFC) circuit topology, this architecture through its transformer reset mechanism in a fixed time, independent of the input and output voltage changes, allows the DC-DC converter duty cycle to exceed 0.5, and the resonant reset peak is proportional to the input volt seconds, the shutdown voltage of the primary power switch is superimposed by the input voltage and the resonant reset voltage, which enhances the withstand voltage and system reliability.
The current stress of the Sling Forward Converter is independent of the input and output voltages, and for GaN, the switching loss is basically zero due to the characteristics of ZVS soft switching. The SFC transformer works in the third and first quadrants, which improves the core utilization efficiency, doubles the maximum magnetic density, and then reduces the number of winding turns and the core winding window area, which is conducive to reducing the volume of the transformer.
The specific solution is the EVM7010A/B solution launched by OPEC, which adopts the integrated control scheme of Sling Forward Converter, which can make the output inductor current work in DCM mode, and all MOS transistors are co-ground driven, without the function of high-voltage half-bridge driver chip.
Summary of the charging head network
An AC-DC kit is a circuit assembly that integrates a variety of electronic components, and its main function is to convert standard alternating current into direct current. This conversion involves not only a change in voltage, but also an adjustment of the polarity of the electricity to ensure that the output is a stable DC in one direction. At the fast charging conference, the AC-DC sets launched by the three fast charging chip companies of Yichong, Yingjixin and Opeijie are at the leading level in the industry, and at the same time, Opeijie also makes the whole system more efficient and reduces the volume of the system according to the new circuit topology architecture.
With the continuous development of technology, the design of AC-DC packages pays more and more attention to the balance between energy efficiency, volume and cost. Modern casings can be flexibly switched to a variety of working modes to adapt to the load requirements of different scenarios, while effectively reducing the ineffective consumption of energy. The AC-DC package launched by Yichong, Yingjixin and OPEIJIE will undoubtedly accelerate this trend and promote the sustainable development of the electronics industry.