Against the backdrop of a growing trend toward self-sufficiency and control in the global electronics industry chain, extensive attention has been paid to the domestic substitution and upgrading of key components, especially high-performance power modules. For a long time, the high-end DC-DC power module market has been dominated by a small number of international manufacturers. In recent years, however, domestic companies, through continuous R&D and technological innovation, have launched a variety of products whose performance and reliability are comparable to or even surpass those of international equivalents, gradually securing a position in high-demand application markets.
Taking the 1/32-brick dual-output isolated DC-DC module as an example, domestic models such as ZITN's Z28T15M20SND demonstrate strong competitiveness in core performance indicators. The module achieves a peak efficiency of up to 88% at 20W output power, on par with advanced industry levels. Its wide operating temperature range of -55℃ to +100℃ and 1500Vdc input-output isolation voltage meet the standards for high-end industrial and special applications.
From a technical implementation perspective, the success of domestic modules benefits from the adoption of several key technologies. For instance, multi-layer heavy-copper PCB technology reduces conduction losses and thermal resistance; planar transformer technology improves power density and consistency; and full potting technology ensures long-term reliability in harsh environments such as high humidity, salt spray, and high altitudes. The mature application of these technologies marks a significant advancement in the design and manufacturing capabilities of domestic power modules.
Domestic modules are also highly competitive in functional integrity. Products integrate a full set of protection features including input under-voltage lockout, output over-current/short-circuit/over-voltage protection, and over-temperature protection. Adopting fixed-frequency PWM control, they operate stably with no minimum load requirement, facilitating ease of use. Their remote on/off control is TTL/CMOS level compatible and supports negative logic operation, enabling easy integration into complex digital control systems.
In terms of market positioning, such high-performance domestic modules do not rely solely on price competition. Instead, they are supported by reliable technical specifications, rigorous screening tests (including internal visual inspection, high-temperature storage, burn-in testing, etc.) and a complete quality control system, directly competing with top international brands. They are clearly targeted at sectors with extremely high requirements for performance, reliability, supply stability and supply chain security, including but not limited to aerospace electronics, high-end test and measurement equipment, core industrial automation control units, remote communication infrastructure, and electronic systems for special vehicles.
In summary, domestic 1/32-brick DC-DC power modules represented by the Z28T15M20SND achieve a balance of high performance and high reliability through solid technological accumulation and strict quality control. Their emergence provides more diverse and reliable power supply solutions for domestic high-end equipment manufacturing and key industries, while also driving technological upgrading and independence across the entire power industry.
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