GXSC Analog-to-Digital Converter Replaces ADS131E08 for Power Protection Applications

In high-end power scenarios such as industrial control, servers, and new energy systems, the power supply system serves as the energy core of electronic equipment. Its stability and safety directly determine the operational reliability and lifespan of the devices. Failure to promptly detect and address faults like overvoltage, overcurrent, undervoltage, or overheating can easily damage power modules, affect downstream loads, and even create safety hazards.

The GXSC ADC provides a pin-to-pin replacement for TI‘s ADS131E08. Its ultra-high resolution, multi-channel synchronous acquisition, superior noise immunity, and integrated protection features precisely meet the demands of power protection systems. The chip incorporates a programmable gain amplifier, internal reference, and on-board oscillator, making it highly suitable for energy metering applications. Leveraging the ADC‘s wide dynamic range, scalable data transfer rates, and internal fault detection monitoring, the GXSC is widely used in industrial power monitoring and protection, as well as test and measurement applications. Its high integration and outstanding performance enable the creation of scalable industrial power systems while significantly reducing size, power consumption, and overall cost.

Each channel features a flexible input multiplexer independently connected to internal generated signals for test, temperature, and fault detection. Fault detection is performed internally using an integrated comparator with trigger levels controlled by the ADC, operating at data rates up to 64kSPS. Key features include:

• Four/six/eight-channel differential analog-to-digital converter inputs

• Dynamic range: 120dB at 1kSPS; Crosstalk: -125dB; Total harmonic distortion: -108dB at 50Hz and 60Hz

• Single-supply voltage range: Analog supply 3V to 5V, digital supply 1.8V to 3.6V

• Low power consumption: 2.3mW per channel

• Data rates: 0.25, 0.5, 1, 2, 4, 8, 16, 32, and 64kSPS

• Programmable gain: 1, 2, 3, 4, 6, 8, 12, and 24

• Fault detection and device test functions

• SPITM data interface and four general-purpose I/O ports

• Superior ESD capability

• Package: QFP-64, BGA-64

• Operating temperature range: -40°C to +105°C

When facing complex conditions in industrial control power supplies, the GXSC ADC‘s 8-channel synchronous acquisition capability simultaneously monitors input/output voltages, load currents, power module temperatures, and bus currents. Through multi-parameter interlinked analysis, it accurately identifies fault types (e.g., overcurrent due to overload, undervoltage caused by poor line contact). Its high anti-interference performance withstands electromagnetic interference in industrial environments, preventing false protection triggers. Rapid response capabilities enable swift relay activation to isolate circuits during faults, preventing fault propagation and meeting the high reliability demands of industrial-grade power supplies.

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