For more information, please visit the product page. date 03/14/2013 page 1 of 4 SERIES: VHB350 │ DESCRIPTION: DC-DC CONVERTER FEATURES • • • • • • up to 350 W isolated output industry standard half brick package 2:1 input range (18~36 V, 36~75 V) single output from 3.3~28 V 1,500 V isolation over current, over temperature, over voltage, and short circuit protections • remote on/off • efficiency up to 92.5% RoHS MODEL input voltage output voltage output current output power ripple and noise1 efficiency range (Vdc) (Vdc) max (A) max (W) max (mVp-p) typ (%) VHB350-D24-S3R3 18 ~ 36 3.3 70 231 100 88 VHB350-D24-S5 18 ~ 36 5 70 350 100 89.5 VHB350-D24-S12 18 ~ 36 12 29.2 350 120 91.5 VHB350-D24-S24 18 ~ 36 24 14.6 350 280 90 VHB350-D24-S28 18 ~ 36 28 12.5 350 280 91 VHB350-D48-S3R3 36 ~ 75 3.3 70 231 100 89 VHB350-D48-S5 36 ~ 75 5 70 350 100 91 VHB350-D48-S12 36 ~ 75 12 29.2 350 120 92.5 VHB350-D48-S24 36 ~ 75 24 14.6 350 280 91.5 VHB350-D48-S28 36 ~ 75 28 12.5 350 280 92.5 Notes: 1. Ripple and noise are measured at 20 MHz BW with 10µF tantalum capacitor and 1µF ceramic capacitor across output PART NUMBER KEY VHB350 - DXX - SXX X Base Number Input Voltage Output Voltage cui.com Remote On/Off Control "Blank" = Positive Logic N = Negative Logic For more information, please visit the product page. CUI Inc │ SERIES: VHB350 │ DESCRIPTION: DC-DC CONVERTER date 03/14/2013 │ page 2 of 4 INPUT parameter conditions/description operating input voltage surge voltage1 typ max units 18 36 24 48 36 75 Vdc Vdc 50 Vdc 24 V input 48 V input power up 24 V input 48 V input 16 34 17 35 18 36 Vdc Vdc power down 24 V input 48 V input 15 32 16 33 17 35 Vdc Vdc turn on 24 V input 48 V input 38 77 Vdc Vdc turn off 24 V input 48 V input 40 80 Vdc Vdc under voltage lockout over voltage protection positive logic remote on/off see note 2 filter PI type Notes: min 1. 100 ms max 2. logic compatibility, open collector ref to -input Module ON, >3.5 to 75 Vdc or open circuit Module OFF, <1.2 Vdc OUTPUT parameter conditions/description line regulation load regulation min typ max units measured from high line to low line ±0.2 % measured from full load to zero load ±0.2 % voltage accuracy transient response 25% step load change adjustability3 switching frequency 3.3 and 5 V models all other models temperature coefficient Notes: ±1.5 % 500 µs ±10 % 300 330 kHz kHz ±0.03 %/°C 3. trim-up: connect a resistor between the trim pin and +Sense trim-down: connect a resistor between the trim pin and -Sense PROTECTIONS parameter conditions/description min over voltage protection %Vo short circuit protection continuous current limit max units 115 140 % 105 140 % thermal shutdown case temp. typ 110 °C SAFETY AND COMPLIANCE parameter conditions/description isolation voltage input to output input to case output to case min typ 1,500 1,500 1,500 isolation resistance MΩ 1,000 safety approvals UL60950-1, EN60950-1 RoHS compliant yes cui.com units Vdc Vdc Vdc 10 isolation capacitance max pF For more information, please visit the product page. CUI Inc │ SERIES: VHB350 │ DESCRIPTION: DC-DC CONVERTER date 03/14/2013 │ page 3 of 4 ENVIRONMENTAL parameter conditions/description min case operating temperature storage temperature humidity max units -40 typ 100 °C -55 105 °C 95 % max units non-condensing MECHANICAL parameter conditions/description dimensions 2.28 x 2.40 x 0.52 inch (57.9 x 61.0 x 13.2 mm) min case material aluminum baseplate with plastic weight typ 114 g MECHANICAL DRAWING 13.20 0.520 57.90 2.280 4.60 0.181 MIN (TYP) 2.50 0.098 4 35.56 1.400 50.80 2.000 5 3 1.02 0.040 (5 PLCS) 6 7 15.24 0.600 2 61.00 2.402 8 1 9 2.03 0.080 (4 PLCS) 48.20 1.898 BOTTOM VIEW All dimensions in mm(inches): Note: All specifications measured at 25°C, nominal input voltage, and full load unless otherwise noted. cui.com PIN CONNECTIONS PIN FUNCTION 1 +Vin 2 On/Off 3 CASE 4 -Vin 5 -Vo 6 -S 7 TRIM 8 +S 9 +Vo For more information, please visit the product page. CUI Inc │ SERIES: VHB350 │ DESCRIPTION: DC-DC CONVERTER date 03/14/2013 │ page 4 of 4 REVISION HISTORY rev. description date 1.0 initial release 06/01/2011 1.01 add remote on/off control to the part number key 11/23/2011 1.02 V-Infinity branding removed 08/30/2012 updated spec 03/14/2013 1.03 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.