Programmable PSUs ideal for battery-powered device mesurement
Typical applications include characterising battery-powered medical devices, wireless sensors, RFID tags, intrinsically safe devices, and consumer electronics, as well as new, low power semiconductor devices.
Series 2280S supplies can output up to 192W of low noise, linear regulated DC power. The Model 2280S-32-6 can output up to 32V at up to 6A, and the Model 2280S-60-3 can output up to 60V at up to 3.2A. Although their sourcing and measurement performance is a step above that of conventional power supplies, Series 2280S supplies have conventional power supply pricing.
Unlike conventional power supplies, Series 2280S supplies can make voltage and current readback measurements with up to 6½ digits of resolution for maximum precision or as low as 3½ digits for greater speed. Voltage output measurements can be resolved down to 100 µV. Load currents from 100 nA to 6A can be monitored with high accuracy. Four load current measurement ranges (10A, 1A, 100 mA, and 10 mA) support measuring full load currents, standby mode currents, and small sleep mode changes precisely.
For monitoring fast-changing and pulse-like load currents, Series 2280S supplies can capture dynamic load currents as short as 140µsec to monitor load currents in all operating modes for determining total power consumption of the device. They also support measuring each state of a power-up load sequence and a power-down sequence. Measurements as fast as 2,500 readings per second make it possible to characterise and test the current draw at each of the start-up states.
Series 2280S users who need to test devices or systems with high in-rush currents can program the voltage output’s rise time to slow the voltage ramp and avoid voltage overshoot, which could potentially damage the DUT. Voltage fall time is also programmable to prevent a fast ramp down of the output voltage.
A 4.3-in. TFT screen displays a a broad span of information. Source settings and other key information appear next to the measurement readings, reducing the chances of operator confusion and test errors. Soft-key buttons combine with a navigation wheel to provide an intuitive user interface with shallow, easy-to-navigate menus. A icon-based main menu simplifies configuring tests. The power supplies’ graphing function simplifies monitoring the stability of the load current, capturing and displaying a dynamic load current, or viewing a start-up or turn-off load current. These power supplies can take measurements quickly, store up to 2,500 measurement points, and compute statistics on the stored data. Statistical calculation options include average, maximum, minimum, peak-peak, and standard deviation.
The built-in List Mode function simplifies testing a design over its operating voltage range automatically or studying how the design responds to DC output changes. Up to nine lists of sequenced voltage levels can be created and saved with up to 99 distinct voltages in each list. A single trigger will automatically execute the list once or multiple times. To minimise test times in automated systems, an external trigger input allows hardware synchronisation and control by other system instruments.
GPIB, USB, and LXI LAN interfaces offer additional options for programming and controlling Series 2280S supplies. The LXI Core compliant LAN interface and built-in web page support remote control and monitoring, so test engineers can always access the power supply and view measurements.
Pricing is;
Model 2280S- 32-6 Precision Measurement DC Power Supply (32V, 6A): €1590;
Model 2280S-60-3 Precision Measurement DC Power Supply (60V, 3.2A): €1590.
Keithley; www.keithley.com/data?asset=58094
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