POWERQUARK has launched the four-phase dual-path synchronous buck converter PQ634X, which supports a switching frequency of up to 2MHz to reduce solution size. It is suitable for consumer applications such as AI PCs, tablets, and televisions, as well as industrial applications like optical modules, edge computing, industrial computers, and distributed power systems. PQ634X combines the efficiency of multiphase design with the flexibility of dual-path design. It achieves excellent efficiency and load transient performance, providing customers with more efficient AI+ universal power supply solutions.
Seizing Opportunities and Making a Strong Entry into the Multiphase Power Supply Market
With the increasing popularity of high-power applications such as AI PCs and servers, the multiphase power supply market is expected to experience explosive growth. Multiphase power supplies parallel multiple power devices to share the load, supporting higher current applications and enabling higher switching frequencies compared to traditional single-phase solutions. The interleaved parallel connection partially cancels out the peaks and valleys of the steady-state inductor current waveform, effectively reducing output voltage ripple, which is crucial for the stable operation of chips like CPUs and GPUs. Additionally, each phase can use smaller inductors and capacitors, meeting the smaller requirements of terminal and industrial equipment. Moreover, multiphase power supplies can quickly adjust current output in response to rapid load changes, achieving superior load transient performance.
In this market trend, POWERQUARK, leveraging its self-developed patents and innovative technologies, has made a strong entry into the multiphase power supply market by launching the first four-phase dual-path power supply PQ634X, offering customers a high-performance choice.
Technological Innovation and Craftsmanship in Creating Outstanding Performance Products
PQ634X is packaged in a QFN case, supporting a wide input voltage range of 3-16V (with external VBIAS) or 4.5V-16V (without external VBIAS). The dual channels can achieve up to four-phase output, with each phase supporting a maximum continuous current of 4A and a peak current of 5A. The product supports a maximum switching frequency of 2MHz, allowing the system to use smaller inductors and capacitors, thus achieving a more compact and smaller solution size and reducing costs. The minimum on-time is only 27.5ns, supporting low duty cycle applications.
PQ634X employs Auto Phase Shedding (APS) technology, which can smoothly change the number of working phases according to the load current to optimize efficiency under different load conditions. It can achieve a low quiescent current of 160μA and a shutdown current of 30μA. PQ634X achieves excellent transient performance. When only one channel is working, the chip can be configured to operate in remote differential voltage sampling mode through the PHASE pin, compensating for the IR drop between the chip output and the load point, thereby improving the accuracy and transient performance of the output voltage.
Based on the extremely small-sized inductors, PQ634X can provide an efficiency of more than 94% (PFM mode, 12V input, 5V/1A-10A output) after the APS is activated. It can still achieve an efficiency of more than 85% at a 1.05V output, demonstrating superior performance.
PQ634X can provide fault reporting and functional configuration functions through the I2C interface. Additionally, to accommodate more flexible applications, users can configure the chip to operate in PFM or IFM (Inaudible Frequency Mode) modes, select from four switching frequencies (600kHz/1MHz/1.5MHz/2MHz), set the I2C address, and choose from four current limit values (3A-6A) through pin configuration.
PQ634X offers highly robust multiple protection functions, including OCL, NOCL, UVLO, OVP, UVP, and OTP, providing comprehensive protection for high-current, high-performance applications and ensuring stable system operation.
