LPS-20 Single Channel LED Power Supply
LPS-20-1500:
max. 24V with 0.5mV resolution

General | |||
Short description | High precision controller for constant-current or constant-voltage remote operation of LEDs. Linear controller for low noise Operation. |
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Main features | 16 bit DAC for the current or voltage control. 16 bit ADC for the current or voltage measurement. Change between voltage and/or current mode without spikes for very fast current or voltage limiting. Sense Input to measure the foreward voltage direct at the test LED (Four contace measurement) CW or pulse mode. RS232 or RS485 remote Interface. Software development kit. Housing for 19 Inch rack use. |
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Measurement range | LPS-20-1500: max. 1500 mA (30 µA resolution). max. 24V (0.5 V resolution). LPS-20-1000: max. 1000 mA (20 µA resolution). max. 24V (0.5 V resolution). LPS-20-100: max. 100 mA (2 µA resolution). max. 24V (0.5 V resolution). LPS-20-10: max. 10 mA (0.2 µA resolution). max. 24V (0.5 V resolution). |
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typical applications | LED current or voltage driver in LED Testsystems in CW or pulse measurement mode. See System excamples TFCT25, TPI21-TH |
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Calibration | - |
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Product | |||
Power Supply | (7 - 28) VDC |
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DC input connector | Phoenix MC15/2GF |
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Output current | Max. 1,5 A, other current ranges on request |
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Output Voltage | max. 24V or (DC input voltage - 4V) |
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max. internal power | 7W (input voltage - output voltage) · output current |
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DC output connector | Phoenix MCDN1.5/6 |
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Accuracy of output current | ± 0.1 %
± 60 µA LPS-20-1500 ± 40 µA LPS-20-1000 ± 4,0 µA LPS-20-100 ± 0,4 µA LPS-20-10 |
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Accuracy of output voltage | ± 0.1 % ± 1 mV |
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Resolution of output current | 30 µA LPS-20-1500 20 µA LPS-20-1000 2 µA LPS-20-100 0,2 µA LPS-20-10 |
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Resolution of output voltage | 0.5 mV |
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Rise time | output current or voltage (10-90) % (also valid for pulse operation) at load resistance: 10R: 500 µs, 100R: 2 ms, 1000R: 20 ms |
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temperature range | current: ± 30 µA LPS-20-1500 ± 20 µA LPS-20-1000 ± 2 µA LPS-20-100 ± 200 nA LPS-20-10
voltage: ± 0.5 mV/°K |
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Stability | ± 150 µA LPS-20-1500 ±100 µA LPS-20-1000 ±10 µA LPS-20-100 ±1uA LPS-20-10 ±0.5 mV
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Accuracy of current measurement | ± 0.1 % ± 60 µA LPS-20-1500 ± 40 µA LPS-20-1000 ± 4 µA LPS-20.100 ± 0,4 µA LPS-20-10 |
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Accuracy of voltage measurement | ± 0.1 % ± 1mV |
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Resolution of current measurement | 15 µA LPS-20-1500 10 µA LPS-20-1000 1 µA LPS-20-100 100 nA LPS-20-10 |
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Resolution of voltage measurement | 0.1 mV |
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ADC conversion time | 100 ms (Option 1: 20 ms) for voltage or current measurement |
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Pulse values | pulse on time: (1 - 999) ms |
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Accuracy of pulse on/off time | 2 % ± 0.5 ms |
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Display | LEDs: green: blinking: DC input voltage present red: continuous: error |
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Control Input | internal pull-up resistor 10 kOhm to +5 V |
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Control Output | MOSFET switch to GND, 0.3 R, max. 32 V, max. 1 A |
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Miscellaneous | |||
Interface | RS232 / RS485: 19200 Bd, 8D, 1S, N |
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temperature range | operation: 10 °C - 30 °C (with free air flow) |
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Dimensions | 105 mm x 126 mm x 45 mm (3HE, 9TE) |
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Weight | 350 g |
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Warranty | 12 month |
Produktname | Product Image | Description | Show product |
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BTH-19 | ![]() |
Bench-top and rack housing for 3HE rack modules. Features: The bench-top housings are available in half, third or full 19” widths. Power supply modules for (110-230) V, 50/60 Hz with low DC voltages for both external devices and those within the housing. |
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S-SDK-LPS | ![]() |
Software Development Kit for LPS variants (power supply). |