NGL202 Digital Power Supply, 2-Channel, Package

Includes:

• NGL-K103 Digital Trigger I/O

Features:

• Channels: 2
• Max. output power: 120W
• Output voltage per channel: 0 V to 20 V
• Output current per channel: ≤ 6 V: 0 A to 6 A or > 6 V: 0 A to 3 A
• Load recovery time: < 30us
• Galvanically isolated, floating channels
• Fast regulation of output voltage with minimum overshoot and very fast load recovery time
• Minimum residual ripple and noise to supply interference — free voltage to sensitive DUTs
• Readings with up to 6-1/2 digit resolution
• Two quadrants: operates as source or sink
• Included interfaces: USB and LAN (Ethernet); GPIB and wireless LAN optional
• Output stage isolated with relays
• Constant voltage, constant current and constant resistance modes
• TFT 5in. 800 × 480px WVGA touchscreen
• QuickArb and EasyRamp functions
• Tailored for use in labs and system racks
• Front and rear connectors
• Full remote capabilities
• Three-year warranty

The two-channel R&S NGL202 delivers up to 60 W of output power per channel (120 W total). The output channels are floating, galvanically isolated and protected against overload and short circuits. Thanks to its fast recovery time of < 30 us and minimum overshoot even during a demanding load change, the NGL202 power supply is ideal for powering IoT devices and other battery-operated devices.

With a resolution of up to 6-1/2 digits when measuring voltage, current and power, the NGL202 power supply is perfect for characterizing devices that have low power consumption in standby mode and high current in full load operation. In many cases, an additional digital multimeter is no longer necessary. The linear two-quadrant design of the output stages allows the NGL202 to operate as a source and sink with minimum residual ripple and noise, ideally supporting the development of power amplifiers and MMICs.

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 uA to the ampere range without creating voltage drops or overshoots.

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 supply must provide extremely stable output voltages and currents. All types of ripple and noise need to be avoided. The NGL202 has linear regulation and are ideal for sensitive DUTs.

The two-quadrant architecture of the NGL202 allows it to function both as a source and a sink and; simulate batteries or loads. The power supply automatically switches from source mode to sink mode. As soon as the externally applied voltage exceeds the set nominal voltage, current flows into the power supply. This is indicated by a negative current reading.

Both channels of the NGL202 are completely isolated from each other and are not connected to chassis ground. They can be used as independent power supplies or be cascaded. The channels can be connected in parallel to achieve higher currents or in series to achieve higher voltages. Connecting the two channels makes it easy to power bipolar circuits that might need +12 V/–12 V, for example.

Configuring and regulating the output voltage (constant voltage mode) is the standard application for power supplies. However, the NGL202 can also be used in constant current mode, with each channel separately configurable. If the configured current level is exceeded, current limiting ensures that only the configured current can flow. The output voltage is accordingly reduced below the configured value. This prevents damage to the test circuit in the event of a fault.

The R&S NGL200 power supplies provide protection functions to make sure the DUT and the power supply are not damaged in the event of a fault. The output channels are protected against overload and short circuits. The maximum voltage, current and power can be set separately for each channel. When a channel reaches the set limit, it is automatically switched off and a message is displayed.

The large capacitive touchscreen is the central operating element. With its very high resolution of 800 x 480 pixels, the display sets new standards for power supplies. The large high-resolution display makes it easy to read the voltage and current fields, even at great distances. A wide variety of additional information, such as power values or statistics, can also be displayed. Icons clearly show the status of the set protection or special functions.

Some applications require the voltage or the current to be varied during a test sequence, for example when simulating different charging conditions of a battery. The Arb function allows manual configuration of time/voltage or time/current sequences via the user interface or program them via external interfaces.