For more information, please visit the product page. date 02/12/2014 page 1 of 6 SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER FEATURES • • • • • • • • • • up to 20 W isolated output 4:1 input range (43~160 V) smaller package single/dual regulated outputs meets European EN50155 railway standard 2,250 Vdc isolation continuous short circuit, over current protection, over voltage protection built-in remote on/off wide operating temperature range (-40~85°C) efficiency up to 90% input voltage MODEL output voltage output current output power ripple and noise1 efficiency typ (Vdc) range (Vdc) (Vdc) min (mA) max (mA) max (W) max (mVp-p) typ (%) PRF20-Q110-S5 110 43~160 5 0 4000 20 75 88.5 PRF20-Q110-S12 110 43~160 12 0 1670 20 100 90 PRF20-Q110-S15 110 43~160 15 0 1330 20 100 89.5 PRF20-Q110-D12 110 43~160 ±12 0 ±833 20 100 89 PRF20-Q110-D15 110 43~160 ±15 0 ±667 20 100 88.5 Note: 1. Ripple and noise are measured at 20 MHz BW by and 1μF ceramic capacitor across each output. PART NUMBER KEY PRF20 - Q110 - XXXX Base Number Output S = single D = dual cui.com Output Voltage Remote On/Off Control "blank" = positive logic N = negative logic For more information, please visit the product page. CUI Inc │ SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER date 02/12/2014 │ page 2 of 6 INPUT parameter conditions/description operating input voltage under voltage shutdown for maximum of 100 ms start-up time single output models dual output models positive logic CTRL1 negative logic Note: typ max units 43 110 160 Vdc power up power down surge voltage filter min 40 38 Vdc Vdc 200 15 25 Vdc ms ms models ON (open or 3.5~75 Vdc) models OFF (0~1.2 Vdc) models ON (0~1.2 Vdc) models OFF (open or 3.5~75 Vdc) pi filter 1. Open collector refer to -Vin. OUTPUT parameter conditions/description maximum capacitive load min typ max units 5V output model 12V output model 15V output model ±12V output model ±15V output model 5600 1000 1000 ±680 ±350 μF μF μF μF μF line regulation from high line to low line ±0.2 % load regulation from full load to no load single output models dual output models ±0.5 ±1 % % cross regulation dual output models, load cross variation 10%/100% ±5 % ±1.5 % voltage accuracy adjustability 2 switching frequency transient response ±10 % 250 KHz 25% load step change temperature coefficient Note: 250 μs ±0.03 %/°C max units 160 % 2. Output trimming available on single output models only PROTECTIONS parameter conditions/description short circuit protection continuous min over current protection over voltage protection typ 110 protected by internal zener or TVS clamp 5V output model 12V output model 15V output model ±12V output model ±15V output model 6.2 15 18 ±15 ±18 Vdc Vdc Vdc Vdc Vdc SAFETY AND COMPLIANCE parameter conditions/description isolation voltage input to output for 1 minute min isolation resistance safety approvals UL60950-1 EMI/EMC EN55022 class A, EN50155 (external circuit required) RoHS 2011/65/EU cui.com typ max units 2,250 Vdc 1000 MΩ For more information, please visit the product page. CUI Inc │ SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER date 02/12/2014 │ page 3 of 6 ENVIRONMENTAL parameter conditions/description min max units operating temperature see derating curve -40 85 °C -55 125 °C 95 % 105 °C max units 260 °C storage temperature humidity typ non-condensing case temperature vibration EN50155 (EN61373) SOLDERABILITY parameter conditions/description wave soldering see wave soldering profile min typ Notes: 1. 2. 3. 4. 5. Temperature (°C) 300 Soldering materials: Sn/Cu/Ni Ramp up rate during preheat: 1.4°C/s (from 50°C to 100°C) Soaking temperature: 0.5°C/s (from 100°C to 130°C), 60±20 seconds Peak temperature: 260°C, above 250°C for 3~6 seconds Ramp down rate during cooling: -10°C/s (from 260°C to 150°C) 250 200 150 100 50 0 0 20 40 60 80 100 120 140 160 180 Time (Seconds) MECHANICAL parameter conditions/description min dimensions 2.00 x 1.00 x 0.40 (50.8 x 25.4 x 10.2 mm) case material black coated copper with non-conductive base typ max units inch weight 35 g MECHANICAL DRAWING units: inch[mm] tolerance: X.XX = ±0.02[±0.5] X.XXX = ±0.010[±0.25] 1.3 mm Plated Through hole 2.5 mm Pad Size 2.00 [50.8] 2.00 [50.8] 1.800 [45.72] 0.10 [2.5] 0.400 [10.16] 6 0.400 [10.16] 5 2 1 0.10 [2.5] 3 0.20 [5.1] 0.10 [2.5] 4 0.22 min. [5.6] PCB Layout Top View 0.40 [10.2] Bottom View 0.200 [5.08] 0.600 [15.24] 1.00 [25.4] 0.400 [10.16] 5 2 6 0.200 [5.08] 0.20 [5.1] 0.600 [15.24] 1 0.400 [10.16] 3 4 0.10 [2.5] Front View 0.040 [1.02] cui.com PIN CONNECTIONS Pin Single Dual 1 +Vin +Vin 2 -Vin -Vin 3 +Vout +Vout 4 Trim -Vout 5 -Vout common 6 Remote ON/OFF 1.00 [25.4] 1.800 [45.72] For more information, please visit the product page. CUI Inc │ SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER date 02/12/2014 │ page 4 of 6 DERATING CURVES Temperature Derating Curve Load (%) 100 80 60 Safe operating area 40 20 -40 -20 0 20 40 60 73 80 105 120 Ambient Temperature (°C) EMC RECOMMENDED CIRCUIT EN50155(EN50121-3-2) Figure 1 Table 1 FUSE External components +Vin +Vo 3A time delay fuse TVS + Vin TVS R-Load - -Vin -Vo TEST CONFIGURATION Figure 2 Table 2 To Oscilloscope External components L1 +Vin +Vo + Vin Cin R-Load - -Vin Note: -Vo Input reflected-ripple current is measured with an inductor L1 to simulate source impedance. cui.com Lin 12μH Cin 22μF, ESR < 0.2Ω at 100 KHz For more information, please visit the product page. CUI Inc │ SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER date 02/12/2014 │ page 5 of 6 APPLICATION NOTES Output Voltage Trimming Leave open if not used. Figure 3 Application Circuit for Trim pin +Vin Formula for Trim Resistor +Vo Rtrim - up = ( Trim Trim up R-Load R trim-up -Vin +Vin Vr x R1 -1) - Rt (KΩ) (Vo, nom - Vo) x R2 +Vo R trim-down R-Load Trim -Vin Rtrim - down = R1 x ( -Vo Trim down -Vo Note: Rtrim-up is the external resistor in KΩ Rtrim-down is the external resistor in KΩ VO, nom is the nominal output voltage VO is the desired output voltage R1, R2, R3, Rt, and Vr are internal (see table 3). Table 3 Note: Vr x R1 x (R2 + R3) ) - Rt (KΩ) (Vo - Vo, nom) x R2 Vout (Vdc) R1 (KΩ) R2 (KΩ) Rt (KΩ) Vr (V) 5 2.32 2.32 0 8.2 2.5 12 6.8 2.4 2.32 22 2.5 15 8.06 2.4 3.9 27 2.5 1. All specifications are measured at Ta=25°C, nominal input voltage and full output load unless otherwise specified. cui.com R3 (KΩ) For more information, please visit the product page. CUI Inc │ SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER date 02/12/2014 │ page 6 of 6 REVISION HISTORY rev. 1.0 description date initial release 02/12/2014 The revision history provided is for informational purposes only and is believed to be accurate. Headquarters 20050 SW 112th Ave. Tualatin, OR 97062 800.275.4899 Fax 503.612.2383 cui.com [email protected] CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website. CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use. CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.