Keysight E3640A - E3649A Programmable DC Power Supply

Excellent Performance Power Source

1. Introduction

In today's era of rapid technological development, programmable DC power supplies are indispensable key equipment in the R&D, testing and production of various electronic devices. Their performance directly affects the progress and quality of the entire project. Keysight Technologies, with its profound technical accumulation and innovation spirit, has carefully developed the E3640A - E3649A programmable DC power supply series. With excellent performance, rich functions and wide application scenarios, it stands out in the market, providing reliable and efficient power solutions for professionals in many industries.

2. Features and Functions

2.1 Excellent Output Performance

1. Power Coverage and Output Modes

1. The output power of this series ranges from 30W to 100W, fully covering power supply requirements from low-power to medium- and high-power devices. Among them, E3640A - E3645A are single-output models that provide stable single-channel DC output, suitable for applications requiring precise control of a single power supply; while E3646A - E3649A are dual-output models that can output two independent DC power supplies simultaneously, greatly improving test efficiency. They are especially suitable for complex circuit testing that requires multiple power supplies working cooperatively, such as communication device motherboard testing, where independent power supplies can be provided to the chipset and different functional modules respectively to accurately simulate the power distribution in actual working environments.

2. Dual-Range Output and Flexibility

1. This series features a unique dual-range output characteristic. Take E3642A as an example, its rated DC output is 0 to 8V/5A or 0 to 20V/2.5A (@0°C to 40°C). This design allows users to flexibly switch output ranges when facing different load requirements without frequent replacement of power supply equipment, effectively improving the convenience and efficiency of testing and R&D. In the initial prototype verification stage of electronic circuit design, when testing low-voltage high-current load chips (such as certain power amplifiers), the low-voltage high-current range can be selected; for circuit modules requiring higher voltage drive (such as LCD backlight drive circuits), users can switch to the high-voltage low-current range, which easily meets diverse testing requirements and accelerates the product R&D process.

3. Voltage Regulation and Transient Response

1. With load and line regulation accuracy as high as 0.01%, this series of power supplies can always maintain high stability of output voltage and current when facing complex and changeable grid fluctuations and load changes. Its voltage settling time is less than 90msec under any load condition, ensuring pure, interference-free DC power for precision electronic equipment. In the testing of electronic control systems for aerospace equipment, even under sudden large load change conditions such as engine start-up, the power supply can respond quickly and maintain stable output, avoiding damage to sensitive electronic components caused by voltage fluctuations, guaranteeing reliable system operation and providing solid power support for flight safety.

(2) Low Noise and Accurate Measurement

1. Noise Suppression and Clean Power Supply

1. Strict specifications are implemented for normal-mode voltage noise and low common-mode current noise. For example, the normal-mode voltage noise of 8V/20V models is lower than 5mVpp/0.5mVrms, that of 35V/60V models is lower than 8mVpp/1mVrms, and the normal-mode current noise is less than 4mArms. In the R&D of medical equipment, such as the analog front-end circuit test of high-precision ECG monitors, the low-noise characteristic ensures the purity of power output, avoids noise interference with the acquisition and processing of weak ECG signals, guarantees the accuracy and reliability of measurement data, and lays a foundation for improving the performance of medical equipment.

2. Industry-leading Measurement Accuracy

1. It delivers excellent measurement accuracy. Take voltage programming accuracy as an example, under specific conditions (25°C ± 5°C, 12 months), it can reach < 0.05% + 10mV (for output 2 of some models such as E3646/47/48/49A, it is 0.1% + 25mV). Whether it is high-precision characteristic test of electronic components or performance evaluation of complex electronic systems, the outstanding measurement accuracy can provide engineers with reliable data support, ensure the credibility of test results, reduce R&D errors and cost waste caused by power supply measurement errors, and improve R&D efficiency and product quality.

(3) Abundant Interfaces and Convenient Operation

1. Multiple Remote Interfaces

1. It fully supports GPIB (IEEE - 488) and RS - 232 interface standards, which are included as standard accessories with the product, allowing users to seamlessly integrate the power supply into automated test systems. Whether in the functional testing of electronic products on industrial automated production lines, it works cooperatively with other test equipment (such as oscilloscopes, spectrum analyzers, etc.) via GPIB interface to realize automatic control of test procedures and data acquisition; or in scientific research laboratories, it connects to computers via RS - 232 interface for remote control and data transmission, meeting researchers' requirements for remote operation and real-time monitoring of experimental equipment, which greatly expands the application scenarios and operational convenience of the power supply.

2. Simple Programming Commands

1. It follows the easy-to-use SCPI (Standard Commands for Programmable Instruments) command set, and with the detailed user manual, both experienced test engineers and beginners new to the electronics field can quickly master the programming operation of the power supply. In the development of chip burn-in test systems for semiconductor chip manufacturing enterprises, developers can easily write test programs according to SCPI commands to achieve precise control of power supply output parameters (such as voltage ramp rise time, stabilization time, current limit value, etc.), quickly build an efficient and reliable burn-in test platform, and improve chip test efficiency and yield.

3. User-friendly Front Panel Operation

1. Equipped with an intuitive rotary knob and self-guided buttons, users can easily set the output to the required resolution, and the front panel setting resolution of voltage and current is up to 10mV/1mA. In addition, the non-volatile memory inside the power supply can store and recall up to 5 complete power supply settings, allowing users to quickly switch configurations between different test scenarios. For technicians engaged in electronic product maintenance and debugging, when facing the power requirements of different faulty devices, they can quickly call up the preset power parameter configuration through simple knob and button operations, which speeds up the maintenance and debugging process and improves work efficiency.

(4) Comprehensive Protection and Practical Design

1. Reliable Overvoltage Protection

1. It features comprehensive overvoltage protection. Users can easily set the overvoltage protection value and enable the protection circuit via the front panel or remote interface. During the R&D testing of power electronic equipment, such as testing of high-voltage inverters, once an abnormal circuit causes a voltage surge, the overvoltage protection mechanism will respond quickly and cut off the power output, preventing excessive voltage from causing permanent damage to expensive power semiconductor devices (such as IGBT modules) and other circuit components, effectively protecting the safety of test equipment and the device under test, and reducing R&D risks and equipment maintenance costs.

2. Flexible Output Interface

1. The front panel is equipped with multi-functional binding posts that support multiple connection methods including safe test leads, banana plugs and bare conductors. The rear panel provides screw terminals and remote sense terminals. For testing automotive electronic devices, especially for testing complex electronic modules such as the engine control unit (ECU), the multi-functional binding posts on the front panel enable quick and convenient connection of various test cables. The remote sense terminals on the rear panel can effectively eliminate voltage drop errors on the load leads, ensure accurate and stable power supply for the ECU, guarantee the accuracy of test results, and improve the R&D quality and reliability of automotive electronic devices.

3. Optimized Heat Dissipation Design

1. It adopts an automatically speed-adjusting cooling fan, which effectively reduces operating noise while meeting the heat dissipation requirements of the power supply. In noise-sensitive environments such as acoustic test laboratories and radio station equipment rooms, the low-noise heat dissipation design can avoid interference from fan noise with the acoustic test environment when supplying power to audio power amplifiers and other devices for testing. This ensures the authenticity and reliability of test results, and provides a reliable environmental guarantee for the R&D and testing of high-quality audio devices.

3. Product Specifications

3.1 Comparison of Model Parameters

 3.2 Specification Advantages

As can be seen clearly from the above specification table, different models of the E3640A - E3649A series power supplies have their own strengths in terms of power, number of outputs and output ratings, providing users with a wide range of options. Single-output models are suitable for simple circuits that require strict control of a single power supply or single-device power supply scenarios. Their compact design and moderate power meet the R&D and production test requirements of many small electronic products; while dual-output models, with their two independent outputs, demonstrate outstanding advantages in complex electronic system testing, and can power multiple subsystems with different voltage requirements at the same time, simplifying the test equipment architecture and improving test efficiency. In terms of power coverage, the gradient setting from 30W to 100W ensures that whether it is low-power sensor module testing or high-power industrial control circuit board debugging, you can always find a suitable power supply model that accurately meets the power requirements of various application scenarios, providing a solid power guarantee for the implementation of your project.

4. Standard Accessories

4.1 Accessory List and Functional Advantages

(II) Analysis of Accessory Configuration Strategy

Keysight has carefully developed accessories for the E3640A - E3649A series power supplies, fully considering the diverse needs of different users in actual operation. From basic operation accessories (user manuals, product reference CD) to essential components for physical installation and electrical connection (power cord, mounting kit), and then to function expansion accessories that improve power supply performance and expand application scenarios (filter panel), a complete and systematic solution is formed. This differentiated accessory configuration strategy meets the basic needs of users, while providing customized function expansion options for users with specific requirements. For example, for laboratories focusing on R&D of high-end electronic products, the filter panel can effectively improve the power quality of the test environment, reduce interference factors, and ensure the accuracy of test results. For enterprises with mass production test lines, the sturdy and stable rack mounting kit and flexible sliding mounting scheme greatly improve equipment integration and maintenance convenience, reduce the cost of construction and operation of production lines, and comprehensively improve the user experience and product value.

V. Application Scenarios

1. Electronic R&D Field

1. Chip Test and Validation: During the R&D process of semiconductor chips, from prototype design verification to pre-mass production characteristic testing, the E3640A - E3649A series power supplies can provide accurate and stable DC power for chips. For example, when testing high-performance microprocessor chips, by precisely controlling the output voltage and current of the power supply, the power requirements of the chip under different working loads can be simulated, and the power consumption, performance indicators and stability of the chip can be monitored, to ensure that the chip design meets the specification requirements, and provide reliable data support and quality assurance for chips entering mass production.

2. Circuit Board Design and Debugging: For electronic circuit design engineers, this series of power supplies are indispensable tools at every stage of circuit board design. In the early stage of schematic design, their stable output characteristics can be used to power circuit modules for functional verification and preliminary performance testing. In the debugging stage after PCB layout and routing is completed, engineers can troubleshoot circuit faults and optimize circuit performance by adjusting the output parameters of the power supply. For example, when debugging high-speed digital circuit boards, the low-noise characteristic of the power supply can effectively avoid noise interference with digital signal transmission, ensure normal operation of the circuit, improve debugging efficiency, and shorten the product R&D cycle.

(II) Manufacturing Process

1. Production Testing of Electronic Products: In mass production of electronic products, the E3640A - E3649A series power supplies are widely used in end-of-line testing. Take smartphone production as an example, this series of power supplies can provide stable power for mobile phone motherboard, display, camera and other components for functional testing, performance calibration and quality screening. Through integration of automated test systems and power supplies, rapid and efficient testing of a large number of products can be realized, which ensures that the electrical performance of each factory-shipped mobile phone meets the quality standards, improves product consistency and reliability, reduces defective rate, and enhances the market competitiveness of enterprises.

2. Industrial Equipment Manufacturing and Testing: In the field of industrial automation equipment manufacturing, such as the production and testing of PLC control systems, industrial robots and other equipment, power supplies provide reliable power for various control circuits, motor drive circuits and sensor modules. With its powerful power output capability and stable performance, it can simulate the power supply fluctuation of equipment under actual working conditions, conduct long-term stability testing and reliability verification on the equipment, ensure the stable operation of industrial equipment in complex and harsh industrial environments, reduce equipment failure rate, improve production efficiency, and provide a strong guarantee for the continuity and stability of industrial production.

(III) Scientific Research and Experimental Applications

1. Physics and Materials Science Research: In physical experiments, such as superconducting material property research and semiconductor physics experiments, extremely high requirements are placed on the stability and accuracy of power supplies. The E3640A - E3649A series power supplies can provide precisely controlled DC current and voltage for experimental setups, ensuring the stability and repeatability of the experimental environment. In the critical current test of superconducting materials, the power supply can precisely output small current changes to accurately measure the electrical properties of superconducting materials under different conditions, providing key data support for superconducting theoretical research and new material development, and promoting the progress of cutting-edge research in physics.

2. New Energy Technology R&D: In the new energy field, such as the research of solar cells, fuel cells, etc., power supplies are used to simulate the power characteristics during battery charging and discharging. In the R&D of solar cells, controlling the power output can simulate the working status of the battery under different light intensities and temperatures, so as to study the photoelectric conversion efficiency, charge-discharge characteristics and life attenuation law of the battery. Its rich interfaces and programmable functions facilitate integration with data acquisition systems, enabling real-time collection and analysis of experimental data and accelerating the innovation and industrialization process of new energy technologies.

(IV) Education and Scientific Research

For electronic engineering laboratories in universities and scientific research institutes, models such as E3641A and E3646A have become powerful tools for teaching and scientific research due to their easy operation and rich functions. From basic circuit experiment teaching to cutting-edge scientific research project exploration (such as research on characteristics of new energy materials, power supply testing of quantum computing prototypes), they provide a stable power platform for teachers, students and researchers, stimulate innovative inspiration, cultivate professional talents, and promote the inheritance of electronic science and technology knowledge and the development of academic innovation.

Conclusion

Keysight E3640A - E3649A series of programmable DC power supplies integrates stable output, powerful protection, intelligent interaction, accurate adaptation and wide compatibility. The rich model range meets diverse power requirements, high-precision output and excellent regulation performance ensure stable operation of equipment, complete protection mechanism resists electrical risks, convenient operation interface and remote programming function improve work efficiency, and multi-scenario application covers the whole life cycle of the electronics industry. In all-round comparison with competitors, it shows its advantages in power configuration flexibility, performance accuracy, functional completeness and operation friendliness, injecting strong impetus and lighting the beacon of innovation for R&D, testing and production of electronic equipment. From cutting-edge exploration of academic research to quality assurance in industrial manufacturing, from polishing prototypes in the laboratory to mass production on production lines, Keysight E3640A - E3649A series, with its excellent quality and innovative design, continues to empower the global electronics industry ecosystem and drives electronic technology to a higher level.

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