Additional Resources: Product Page 3D Model datdatee 01/05/202201/05/2022 pagepage 1 of 91 of 9 SERIES: VHK75W DESCRIPTION: DC-DC CONVERTER FEATURES up to 75 W isolated output rugged metal enclosure with integrated heat sink 4:1 input range (9~36 Vdc, 18~75 Vdc) single output from 3.3~48 Vdc 1,500 Vdc isolation over current, over temperature, over voltage, and short circuit protections remote on/off efficiency up to 84% input output output output ripple efficiency MODEL 1 voltage voltage current power and noise range max max max typ (Vdc) (Vdc) (A) (W) (mVp-p) (%) VHK75W-Q24-S3R3 9 ~ 36 3.3 15 50 100 77 VHK75W-Q24-S5 9 ~ 36 5 15 75 100 80 VHK75W-Q24-S12 9 ~ 36 12 6.25 75 150 81.5 VHK75W-Q24-S15 9 ~ 36 15 5 75 150 82.5 VHK75W-Q24-S24 9 ~ 36 24 3.12 75 240 83 VHK75W-Q24-S48 9 ~ 36 48 1.56 75 480 80 VHK75W-Q48-S3R3 18 ~ 75 3.3 15 50 100 78 VHK75W-Q48-S5 18 ~ 75 5 15 75 100 81 VHK75W-Q48-S12 18 ~ 75 12 6.25 75 150 82.5 VHK75W-Q48-S15 18 ~ 75 15 5 75 150 83.5 VHK75W-Q48-S24 18 ~ 75 24 3.12 75 240 84 VHK75W-Q48-S48 18 ~ 75 48 1.56 75 480 82 Note: 1. Ripple and noise are measured at full load, 20 MHz BW with 10F tantalum capacitor and 1F ceramic capacitor across output. The 48 Vdc output models only require the 1F ceramic capacitor across the output. PART NUMBER KEY VHK75W - QXX - SXX X Base Number Input Voltage Output Voltage Remote On/Off Controlblan = positive logic N = negative logic cui.comAdditional Resources: Product Page 3D Model CUI Inc SERIES: VHK75W DESCRIPTION: DC-DC CONVERTER date 01/05/2022 page 2 of 9 INPUT parameter conditions/description min typ max units 24 Vdc input models 9 24 36 Vdc operating input voltage 48 Vdc input models 18 48 75 Vdc power up 8.8 Vdc 24 Vdc input power down 8 Vdc under voltage shutdown power up 17 Vdc 48 Vdc input power down 16 Vdc models ON (REM pin open circuit) positive logic models OFF (REM pin 0~0.8 Vdc) 1 remote on/off models ON (REM pin 0~0.8 Vdc) negative logic models OFF (REM pin open circuit) filter pi filter 15A time delay fuse for 24 Vin models, input fuse 8A time delay fuse for 48 Vin models Note: 1. Open collector refer to -Vin OUTPUT parameter conditions/description min typ max units 3.3 and 5 V output models 15,000 F 12 V output models 6,250 F maximum capacitive load 15 V output models 5,000 F 24 V output models 3,120 F 48 V output models 1,560 F 2 line regulation measured from high line to low line 0.2 % 2 load regulation measured from full load to zero load 0.2 % voltage accuracy 1 % adjustability 10 % switching frequency 300 kHz transient response 25% step load change 500 s temperature coefficient 0.03 %/C Note: 2. A 47 F aluminum capacitor is required on the output for 48 Vdc output models. PROTECTIONS parameter conditions/description min typ max units short circuit protection continuous over current protection % nominal output current 110 160 % over voltage protection 115 140 % shutdown 100 C over temperature protection restart threshold 70 C SAFETY AND COMPLIANCE parameter conditions/description min typ max units for 1 minute: input to output input to case isolation voltage 1,500 Vdc output to case isolation resistance 10 M RoHS 2011/65/EU (CE) ENVIRONMENTAL parameter conditions/description min typ max units operating temperature see derating curve -40 85 C storage temperature -55 105 C cui.com