UF224

UF224 CUI | Alldatasheet

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Technical content

V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062 www.v-infinity.com 1-866-372-1258 UF224 Converter Kit 1. The acceptable input voltage is the range suitable for the U-frame Kit only. It is OK to use a converter with a wider input range as long as the input volt age applied does not exceed the kit’s acceptable input voltage range. 2. These converters actually have input ranges that exceed the respective U-frame kit's input range but are still accept able for use as long as the Kit's Acceptable Input Voltage range is not exceeded. Notes: Key Features - Designed for easy application of board-mount DC-DC Converters - Provides a PCB to mount the converter - Includes screw terminals for input and output connections - Includes all mounting hardware - Can be DIN rail mounted with (Optional) mounting adapter - Includes following features: o Input fuse o Input transient protection o Input reversal protection o Meet EN55022 class B conducted emissions o Output trimming capable with (Optional) trim potentiometer - must be purchased seperately and installed onboard.

Description

The UF224 kit is a value added item designed to facilit ate easy application of 2"X2" sized board mount DC-DC converters. It includes all components needed to use the converter, removing the need to pro - cure PCB, metal frame, mounting hardware, filtering and protection component s. For basic operations, only the converter needs to be selected and procured sep arately. For additional output adjustment, a seperate trim potentiometer can be purchased and inst alled onboard. UF224S kits are designed for single-output converters. Model Input Voltage Protection Input Fuse Applicable V -INFINITY Applicable V -INFINITY Number V oltage Threshold DC-DC Converters¹ DC-DC Converters ² UF224S18 9-18VDC 20V 5A VCD30-D12-SXX VCQ15-Q24-SXX PTK15-Q24-SXX UF224S36 9-36VDC 39V 3A VCD30-D24-SXX VCQ15-Q48-SXX VCQ15-Q24-SXX PTK15-Q48-SXX PTK25-D24-SXX PTK15-Q24-SXX UF224S75 9-75VDC 82V 1A VCD30-D48-XXX VCQ15-Q48-SXX PTK25-D24-SXX PTK15-Q48-SXX Model Configurations

V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062 www.v-infinity.com 1-866-372-1258 UF224 Converter Kit Pin Assignments +Vin: + Input -Vin: - Input On/Off: Remote control to turn output On/Off Trim: Output fine tuning +Vout: + Output -Vout: - Output N.C.: No connection Environment Conditions Operating temperature range 0 ~ 50C Storage temp range -25 ~ 85C Humidity 10 ~ 90% RH, non-condensing Parts List 1. PCB assembly - partially completed 2. U-frame 3. 4x M3 machine screws Assembly Instructions: 1. Select appropriate converter and UF224 kit according to the model configurations t able. 2. Locate the p artially completed assembly 3. Remove the 4x M3 screws and t ake out PCB 4. If output trimming is needed, inst all a top-mount 5K Ω trim pot. Available from Digikey , part # 3306F-502-ND or 307UC502E-ND. 5. Insert and solder converter . Trim of f excess leads as needed. 6. For DIN rail applications, secure the DIN rail adapter Kit (optional, model # VDRP-03). Skip this step for non-DIN rail mounting applications. 7. Secure PCB assembly to the U-frame with the 4x M3 screws. 8. Connect input wires and output leads.

V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062 www.v-infinity.com 1-866-372-1258 UF224 Converter Kit Application Notes: 1. Input voltage It is important to ensure the input voltage measured at the converter input pins is within the range for that converter. Make sure wire losses and volt age ripples are accounted for. One possible problem is driving the converter with a linear unregulated power supply . For example, if the average volt age measured by a DMM is 9V, with a voltage ripple of 3Vpp, the actual input can swing from 7.5V to 10.5V. This will be outside the range of a 9-18V converter and it may not function properly . On the other end, make sure the actual input volt age does not exceed the highest volt age allowed by either the U-frame kit or the converter. 2. Lead wires Make sure the input and output wires are of adequate AWG size to minimize voltage drop, and ensure the voltage across the input terminals is above the converter's rated minimum volt age at all times. It is recommended to have the wire p airs twisted, respectively for the input p air and the output pair, so as to minimize noise pickup. 3. Input current The input voltage source must be able to provide enough current to the converter , or it may not start up or operate properly. A typical symptom is not starting or unusually low output voltage. In general, it is recommended to be able to provide at least: Ipeak = 150%*Pout/(η *Vmin) where Pout is the maximum output power, Vmin is the minimum input volt age and η is the converter's efficiency. As an example, for PTK15-Q24-S5 to operate with 10~36V input, 15W output and an ef fi- ciency of 78%, the minimum source current is recommended to be: 4. Input fuse For various protection functions, a fast-acting input fuse has been inst alled with the following current ratings: However, if the input range is well defined, the st andard fuse may be replaced with a smaller fuse. The fuse should be chosen to allow for the maximum current at the lowest input volt age, as shown in this equation: Ipeak = 150%*Pout/(η *Vmin) As an example, consider a 15W converter with 75% ef ficiency. If the actual input volt age range is 16~28V, the maximum input current is Ipeak = 150%*15/(75% * 16) = 1.875A. The preinstalled fuse can be replaced with a 2A fuse in this situation. UF224S18 5.0A UF224S36 3.0A UF224S72 1.0A

V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062 www.v-infinity.com 1-866-372-1258 UF224 Converter Kit 5. Input OVP To suppress voltage transients of short durations, the kit includes a Zener diode. For converter input s of up to 18V, the Zener diode used has a rated breakdown volt age of 20V. For converter inputs of up to 36V, the Zener diode has a rated volt age of 39V. For inputs up to 72V, the Zener voltage rated is 82V. Notice, however, that these Zener diodes can only dissip ate a small amount of power. It is necessary to ensure the input voltage does not exceed the maximum rated converter input. Otherwise the converter and the Zener diode may suf fer permanent damage. 6. Input reversal If the input voltage is reversed for any reason, the built-in protection circuit s in the UF224 kit will limit the reverse voltage to one diode drop or no more than 1V . The input fuse will open and thus remove power from the converter. Check the wiring and make corrections as needed. The input fuse will need to be replaced. Make sure the new fuse is of the same type and rating. 7. Output trimming (optional) The UF224 Kit provides the space and pads for a trimming potentiometer. To adjust the output volt- age, install a 5KΩ potentiometer, (Digikey part # 3306F-502-ND or 307UC502E-ND or equivalent). The potentiometer is not needed if no trimming function is desired. Please note that only converters listed in the Model Configurations table can achieve output trimming. 8. Output OCP and short-circuit Output overload and short circuit protections are provided by the converter it self only. Please see the converter datasheet for reference. 9. Output OVP Output over-voltage protection is provided by the converter it self only. Refer to converter datasheet. 10. Output On/Off control The converter output can be enabled or disabled through the On/Of f pin. Refer to converter dat a sheet. 11. Isolation The input and output of the converter are electrically isolated. The isolation voltage rating is the same as that of the converter. Refer to converter data sheet. 12. Input filtering and EMI interference The UF224 kit has built-in components for input filtering, leading to reduced current ripple and the associated EMI interference. The kits are designed to meet EN55022 class B conducted st andards. If the entire system powered by this converter kit needs to p ass an EMI standard, it is recommended to have entire system tested against that st andard. 13. Output filtering The UF224 kit has a small output cap acitor to help reduce ripple and noise. V-Infinity reserves the right to make changes to it s products or to discontinue any product or service without notice, and to advise customers to verify the most up-to-date product information before plac - ing orders. V-Infinity assumes no liability or responsibility for customer's applications using V -Infinity products other than repair or replacing (at V-I's option) V-Infinity products not meeting V-I's published specifications. Nothing will be covered out side of standard product warranty. All specifications typical at nominal line, full load and 25°C unless otherwise noted.