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PS50 Series

Product catalog summary

Overview: The document provides technical specifications for the PS50 Series of high-density DC-DC modules by Powersolve Electronics Ltd. These modules offer 25 to 50 Watt wide input DC-DC converters with single output capabilities.

Key Features:

Isolated output with power ratings of 25W/50W.
Efficiency up to 85%.
Switching frequency of 300KHz.
2:1 input range with regulated outputs.
Continuous short circuit protection and five-sided metal case.

Model Specifications: The document lists various models with different input and output voltages, currents, and efficiencies. For example, the PS50-12S25 model has an input voltage of 2.5 VDC, output current of 10 A, and efficiency of 76%.

Input Specifications:

Input voltage ranges: 12V (9-18V), 24V (18-36V), 48V (36-75V).
Undervoltage lockout values for power up and power down.
Positive logic remote ON/OFF and Pi type input filter.

Output Specifications:

Voltage accuracy of +1% max.
Transient response time of less than 500µsec for a 25% step load change.
External trim adjustment range of +10%.
Ripple and noise specifications for different voltage outputs.

Environmental Specifications:

Temperature coefficient of +0.03%/°C.
Operating case temperature range from -40°C to 100°C.
Storage temperature range from -55°C to +105°C.
Thermal shutdown at 100°C typical.

General Specifications:

Isolation voltage of 1500VDC minimum for input/output, input/case, and output/case.
Switching frequency of 400KHz for 12/24Vin and 300KHz for 48Vin.
Dimensions: 2.28x2.40x0.50 inches (57.9x61.0x12.7 mm).
Case material: Aluminium.

Derating and Thermal Management: The document includes a derating curve and thermal resistance values for different air flow rates, emphasizing the need for proper cooling or derating when operating the PS50 series.

Remote ON/OFF Control and Output Trimming: The PS50 series supports remote ON/OFF control with options for positive or negative logic. Output can be externally trimmed by +10% using a fixed resistor or trimpot.

Output Noise: Output noise is measured with specific capacitors across the output, and a test circuit schematic is provided.

Catalog excerpts

High Density DC-DC Modules SOLVE www.powersolve.co.uk PS50 Series 25 to 50 Watt Wide Input DC-DC Converters Single Output Features • 25W/50W Isolated Output • Efficiency to 85% • 300KHz Switching Frequency • 2:1 Input Range • Regulated Outputs • Continuous Short Circuit Protection • Five-Sided Metal Case Only for Nominal Input Voltage 24 & 48 VDC INPUT CURRENT NO LOAD FULL LOAD 2740 mA 3525 mA 50 mA 5145 mA NOTE: 1. Nominal Input Voltage 12, 24 & 48 VDC

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High Density DC-DC Modules www.powersolve.co.uk Electrical Specification INPUT Input Voltage Range 12V 24V 48V 12Vin power up power down 24Vin power up power down 48Vin power up power down Undervoltage lockout Positive Logic Remote ON/OFF3.4 Input Filter OUTPUT Voltage Accuracy : Transient Response : 25% Step Load Change External Trim Adj. Range Ripple & Noise, 20MHz BW, Inches Millimeters Operating case Temperature Storage Temperature Inserts Mounting M3*0.5 Through Temp. BOTTOM VIEW Thermal Shutdown, Case4pl. Dimensions 4 1.40 (35.56) 2.00 (50.80) Case Material See Table 1500VDC min. 1500VDC...

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High Density DC-DC Modules www.powersolve.co.uk Application Note Derating: The operating case temperature range of the PS50 series is -40°C to +100°C. When operating the PS50 series, proper derating or cooling is needed. The following curve is the derating curve of a PS50 without heat sink. Power Dissipated vs Ambient Temperature and Air Flow 50 Natural Convection 20 ft./min. (0.1 m/s) Power Disspated, Pd (Watts) Ambient Temperature, Ta(Deg. C) Forced Convection Power Derating without Heat Sink Where: The power dissipation (Pd): Pd = Pi - Po = Po (1-n) /n The thermal resistance are listed below:...

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www.powersolve.co.ukRemote ON/OFF Control The PS50 series allows the user to switch the module on and off electronically with remote on/off feature. The PS50 series are available with "positive logic" or "negative logic" (option). Logic Table t> O ON/OFF (2) HIGH SIGNAL HERE DISABLE OUTPUT External Output Trimming Output may optionally be externally trimmed (+10%) with a fixed resistor or an external trimpot as shown. TRIM DOWN TRIM (7) O ^ZZ TRIM UP -SENSE (6) O <- External OutputOutput Noise The output noise is measured with 10|iF tantalum capacitor and 1.0|iF ceramic capacitor across output....

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All Powersolve Electronics catalogs and technical brochures

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