Rohde & Schwarz NGM-COM2B Dual Output DC Power Supply
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Rohde & Schwarz NGM-COM2B is a programmable dual-output DC power supply with 120W total power, featuring fast load regulation, battery simulation, and high-speed data acquisition.
Product details
| Model | NGM-COM2B (3638.4472P87) |
| Manufacturer | Rohde & Schwarz |
| Category | Power Supplies & Electronic Loads |
| Availability | Made to order |
Description
Overview
The Rohde & Schwarz NGM-COM2B is a professional-grade programmable DC power supply from the NGM200 series, engineered for high-precision testing and development. It features two independent output channels with galvanically isolated floating architecture, allowing it to function as both a power source and sink. The two-quadrant design is particularly suited for testing modern consumer electronics that require rapid load changes, such as mobile devices switching between sleep and transmit modes.
Key Features
- 120W total output power with dual channels (0V to 20V, up to 6A per channel)
- Fast load regulation with recovery time under 30 microseconds
- Low ripple and noise output (under 500 µVRMS and 1 mARMS)
- High-speed data logging up to 500 ksample/s
- 6½-digit resolution for voltage, current, and power measurements
- Floating, galvanically isolated output channels with short-circuit protection
- Two-quadrant operation (source and sink modes)
- Battery simulation functionality with capacity, Voc, and ESR modeling
- Digital voltmeter option for independent point measurement
- Digital trigger I/O capability
- USB and Ethernet interfaces (wireless LAN optional)
Applications
- Mobile device and IoT power supply testing
- Battery characterization and simulation
- Precision power delivery to sensitive analog circuits
- Load switching and recovery testing
- Power consumption profiling and analysis
Included Accessories
- Set of power cables
- Quick start guide
Specifications
| NGM-COM2B | 3638.4472P87Power SupplyWorldwideOutput channels 2 Max. output power 120 W NGM202: K103: digital trigger I/O; K104: digital voltmeter functionality; K106: battery simulation |
| Battery Simulation | Real batteries show different characteristics depending on the type of battery and its charging condition. Capacity, open circuit (Voc) and equivalent series resistance (ESR) are important battery characteristics that depend on its state of charge (SoC). The optional NGM-K106 functionality allows users to simulate the behavior of batteries under different charging conditions; e.g. when powering a DUT |
| High Speed Acquisition | The NGM200 power supplies offer the high-speed FastLog functionality to capture voltage and current measurement results. This data can be stored on an external USB storage device or can be transferred to an external PC via USB or LAN. With an acquisition rate of up to 500 ksample/s, voltage and current results are available every 2 μs. Instead of the readback voltage, also the voltage measured by the optional digital voltmeter functionality (NGM-K104) can be logged with 500 ksample/s. Using the two-channel NGM202, the data acquisition can run on both channels in parallel. With this high-speed acquisition, even spikes in the microsecond range that cannot be detected with slower instruments, can be detected in min./max. values. |
| Digital Voltmeter Functionality | Like other power supplies, the NGM200 instruments measure the voltage supplied to the DUT. In addition, the NGM-K104 option activates a port that allows the internal digital voltmeter to be connected to any other point in the customer's circuitry. In many cases, an additional digital multimeter is not necessary. |
| 6½ Digit Resolution | With a resolution of up to 6½ digits when measuring voltage, current and power, the NGM200 power supplies are perfect for characterizing devices that have low power consumption in standby mode and high current in full load operation. Two voltage measurement ranges and four ranges to measure current provide a high accuracy and resolutions down to 1 μV/10nA. |
| Fast Load Regulation | Consumer electronics such as mobile phones and IoT devices require very little power in sleep mode. However, the current increases abruptly as soon as the device switches to transmit mode. A power supply used to power such DUTs must be capable of handling load changes from a few µA to the ampere range without creating voltage drops or overshoots. The NGM200 power supplies have a circuit design that allows the user to determine how the power supply regulates load changes. The “Fast” default setting is optimized for speed, achieving recovery times of < 30 µs. Deactivating “Fast” slightly increases the recovery time, focusing on preventing overshoots under special load conditions. The NGM200 power supplies regulate the output impedance very fast. Especially in the range from –50 mΩ to 2 Ω, recovery times of < 200 µs can be achieved. |
| Minimum Residual Ripple and Low Noise | Advanced electronic circuitry is often very complex and sensitive to interference on the supply lines. In order to supply interference-free voltage to such sensitive DUTs, the power supplies must provide extremely stable output voltages and currents. All types of ripple and noise need to be avoided. The NGM200 power supplies have linear regulation and are ideal for sensitive DUTs. |
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Rohde & Schwarz NGM-COM2B Dual Output DC Power Supply
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