YSN8025TS: High-Precision RTC Timing Solution for Photovoltaic Inverters-YQM Electronis

In photovoltaic inverters, time is not only the foundation for data recording but also a fundamental parameter for system operation, scheduling, and maintenance. From grid-connection control and peak-valley scheduling, to power generation data logging and fault tracing, all critical actions rely on a stable, continuous, and reliable time reference.

The YSN8025TS Industrial-Grade High-Precision RTC Chip launched by YXC is specifically designed for the application environments of photovoltaic inverters, such as long-term outdoor operation, wide temperature fluctuations, and frequent power switching. It can be widely applied to centralized, string, micro, and integrated PV-storage inverter systems, providing stable and reliable time management support for the system.

YXC High-Precision RTC: YSN8025TS

Why Must Photovoltaic Inverters Be Equipped with an Independent RTC?
Multiple core functions of photovoltaic inverters rely on stable, continuous time reference support. The following is an analysis of typical application scenarios and time management requirements:

Core Requirement	Specific Application Scenario	Impact of Not Having an RTC Chip
Compliant Power Data Logging	Recording real-time power, daily/monthly generation, and binding timestamps for subsidy applications, revenue accounting, and long-term data archiving.	Discontinuous or inaccurate timestamps lead to insufficient traceability of power generation data, making it difficult to meet grid-connection and compliance requirements such as IEC 61727 and GB/T 37408.
Grid Peak-Valley Scheduling	Prioritizing stored energy supply during peak periods and executing charging strategies during valley periods according to time-of-use electricity price strategies.	Unstable time base leads to inaccurate identification of peak/valley periods and deviations in scheduling strategy execution, affecting grid-connection control and system economics.
Precise Fault Diagnosis	Time-correlating events like overvoltage, overcurrent, IGBT overtemperature, etc., and combining them with sunlight and grid status for problem localization.	Inability to accurately align event times makes fault correlation analysis difficult, reducing maintenance localization efficiency and prolonging troubleshooting cycles.
Time Keeping in Low-Power Standby	Maintaining continuous system time after entering standby mode at night or under low-light conditions and after the main power is shut off.	Reliance on network or main controller synchronization increases system power consumption and response delay. Time must be re-synchronized after power-up, affecting system startup efficiency.

YSN8025TS Key Features: Matching Photovoltaic Inverter Timing Requirements
YSN8025TS is a high-precision RTC chip designed for demanding industrial-grade application scenarios. Its key features are highly compatible with the operating environment and functional requirements of photovoltaic inverters, providing a stable and reliable time reference for the system.

(1) Industrial-Grade Reliability | Wide Temperature Range & High Precision, Adapts to Harsh Outdoor Environments
Photovoltaic inverters operate long-term in complex environments involving high-temperature exposure, low-temperature cold, and strong electromagnetic interference. YSN8025TS employs an industrial-grade wide-temperature design of -40°C to +85°C, with a built-in temperature compensation circuit. It maintains a timing deviation of ±3.4ppm across the full temperature range, ensuring time accuracy does not drift with environmental changes and meeting the 25-year lifecycle reliability requirements of photovoltaic systems.

(2) Low Power Consumption & Long Standby | Reduces Full Lifecycle Maintenance Costs
YSN8025TS features an ultra-low time-keeping current of 1μA and supports a wide supply voltage range of 1.8V to 5.5V, effectively extending backup battery life. It reduces maintenance frequency in centralized inverters and effectively controls self-consumption in micro-inverters and distributed scenarios, lowering overall operation, maintenance, and backup power costs, thereby enhancing product competitiveness.

(3) High Precision & Multi-Functionality | Supports Inverter Intelligent Scheduling Needs
The ±3.4ppm timing accuracy ensures precise execution of time-sensitive tasks such as peak-valley tariff switching and energy storage charge/discharge strategies. The chip supports various interrupt functions, allowing direct triggering of core tasks like charge/discharge switching, scheduled self-checks, and fault logging without requiring polling by the main MCU. This reduces system load and improves response efficiency.

Brief Datasheet: YSN8025TS

If you are working on the clock solution design for photovoltaic inverters, energy storage systems, or energy management terminals (EMS), please feel free to contact us to obtain detailed specifications, apply for sample testing, or consult on technical solutions.

YXC High-Precision RTC: YSN8025TS

Core Requirement	Specific Application Scenario	Impact of Not Having an RTC Chip
Compliant Power Data Logging	Recording real-time power, daily/monthly generation, and binding timestamps for subsidy applications, revenue accounting, and long-term data archiving.	Discontinuous or inaccurate timestamps lead to insufficient traceability of power generation data, making it difficult to meet grid-connection and compliance requirements such as IEC 61727 and GB/T 37408.
Grid Peak-Valley Scheduling	Prioritizing stored energy supply during peak periods and executing charging strategies during valley periods according to time-of-use electricity price strategies.	Unstable time base leads to inaccurate identification of peak/valley periods and deviations in scheduling strategy execution, affecting grid-connection control and system economics.
Precise Fault Diagnosis	Time-correlating events like overvoltage, overcurrent, IGBT overtemperature, etc., and combining them with sunlight and grid status for problem localization.	Inability to accurately align event times makes fault correlation analysis difficult, reducing maintenance localization efficiency and prolonging troubleshooting cycles.
Time Keeping in Low-Power Standby	Maintaining continuous system time after entering standby mode at night or under low-light conditions and after the main power is shut off.	Reliance on network or main controller synchronization increases system power consumption and response delay. Time must be re-synchronized after power-up, affecting system startup efficiency.

Brief Datasheet: YSN8025TS

YSN8025TS: High-Precision RTC Timing Solution for Photovoltaic Inverters

YSN8025TS: High-Precision RTC Timing Solution for Photovoltaic Inverters

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