For more information, please visit the product page. date 03/14/2016 page 1 of 6 SERIES: VFSD1-DIP │ DESCRIPTION: DC-DC CONVERTER FEATURES • • • • • • • • • 1 W isolated output industry standard 14 pin DIP package unregulated single output (3.3~24 V) small footprint 3,000 V isolation short circuit protection temperature range (-40~85°C) efficiency up to 82% RoHS MODEL input voltage output voltage output current output power ripple noise efficiency UL60950 typ (Vdc) range (Vdc) (Vdc) min (mA) max (mA) max (W) max (mVp-p) typ (%) VFSD1-S5-S3.3-DIP 5 4.5 ~ 5.5 3.3 30 300 1 75 74 NO VFSD1-S5-S5-DIP 5 4.5 ~ 5.5 5 20 200 1 75 70 YES VFSD1-S5-S9-DIP 5 4.5 ~ 5.5 9 12 111 1 75 75 YES VFSD1-S5-S12-DIP 5 4.5 ~ 5.5 12 9 83 1 75 78 YES VFSD1-S5-S15-DIP 5 4.5 ~ 5.5 15 7 67 1 75 80 YES VFSD1-S5-S24-DIP 5 4.5 ~ 5.5 24 5 42 1 75 78 NO VFSD1-S12-S3.3-DIP 12 10.8 ~ 13.2 3.3 30 300 1 75 75 NO VFSD1-S12-S5-DIP 12 10.8 ~ 13.2 5 20 200 1 75 72 YES VFSD1-S12-S9-DIP 12 10.8 ~ 13.2 9 12 111 1 75 76 YES VFSD1-S12-S12-DIP 12 10.8 ~ 13.2 12 9 83 1 75 79 YES VFSD1-S12-S15-DIP 12 10.8 ~ 13.2 15 7 67 1 75 81 YES VFSD1-S12-S24-DIP 12 10.8 ~ 13.2 24 5 42 1 75 79 NO VFSD1-S15-S3.3-DIP 15 13.5 ~ 16.5 3.3 30 300 1 75 73 NO VFSD1-S15-S5-DIP 15 13.5 ~ 16.5 5 20 200 1 75 74 NO VFSD1-S15-S12-DIP 15 13.5 ~ 16.5 9 12 111 1 75 75 NO VFSD1-S15-S15-DIP 15 13.5 ~ 16.5 12 9 83 1 75 79 NO VFSD1-S15-S15-DIP 15 13.5 ~ 16.5 15 7 67 1 75 79 NO VFSD1-S15-S24-DIP 15 13.5 ~ 16.5 24 5 42 1 75 79 NO VFSD1-S24-S3.3-DIP 24 21.6 ~ 26.4 3.3 30 300 1 75 76 NO VFSD1-S24-S5-DIP 24 21.6 ~ 26.4 5 20 200 1 75 73 YES VFSD1-S24-S9-DIP 24 21.6 ~ 26.4 9 12 111 1 75 77 YES VFSD1-S24-S12-DIP 24 21.6 ~ 26.4 12 9 83 1 75 80 YES VFSD1-S24-S15-DIP 24 21.6 ~ 26.4 15 7 67 1 75 82 YES VFSD1-S24-S24-DIP 24 21.6 ~ 26.4 24 5 42 1 75 80 NO Note: 1. Ripple and noise measured at 20 mHz BW cui.com For more information, please visit the product page. CUI Inc │ SERIES: VFSD1-DIP │ DESCRIPTION: DC-DC CONVERTER date 03/14/2016 │ page 2 of 6 PART NUMBER KEY VFSD1-S XX -S XX -DIP Base Number Input Voltage Output Voltage INPUT parameter conditions/description min typ max units input voltage 5 V model 12 V model 15 V model 24 V model 4.5 10.8 13.5 21.6 5 12 15 24 5.5 13.2 16.5 26.4 Vdc Vdc Vdc Vdc input filter C filter min typ max units ±1.2 % OUTPUT parameter conditions/description voltage accuracy see tolerance envelope graph line regulation for Vin change of ±1% load regulation 10 ~ 100% full load switching frequency 100% load, nominal input voltage temperature coefficient 100% load 83 10 15 % 100 125 kHz ±0.03 %/°C max units 1 s max units PROTECTIONS parameter conditions/description min typ short circuit protection SAFETY AND COMPLIANCE parameter conditions/description min typ isolation voltage tested for 1 minute at 1 mA max. 3,000 Vdc isolation resistance at 500 Vdc 1,000 MΩ isolation capacitance input to output, 100 kHz / 0.1 V safety approvals UL60950 (E222736) RoHS compliant yes MTBF MIL-HDBK-217F, 25°C 20 pF 3,500,000 hours ENVIRONMENTAL parameter conditions/description min typ max units operating temperature -40 85 °C storage temperature -55 125 °C storage humidity non-condensing temperature rise at full load 95 lead temperature 1.5 mm from case for 10 seconds 25 cui.com % °C 300 °C For more information, please visit the product page. CUI Inc │ SERIES: VFSD1-DIP │ DESCRIPTION: DC-DC CONVERTER date 03/14/2016 │ page 3 of 6 EMC RECOMMENDED CIRCUIT LDM Vin Vin +Vo LOAD C1 GND GN D - Vo (0V) C2 RECOMMENDED EXTERNAL CIRCUIT PARAMETERS Vin = 5V Vin = 12V C1 Vin = 15V 475 k / 50 V LDM 6.8 µH C2 --- 470 pF / 2 kV DERATING CURVES 100 Load (%) Vin = 24V 80 60 40 20 -40 -20 0 20 40 60 85 Ambient Temperature (°C) cui.com 105 120 For more information, please visit the product page. CUI Inc │ SERIES: VFSD1-DIP │ DESCRIPTION: DC-DC CONVERTER date 03/14/2016 │ page 4 of 6 MECHANICAL parameter conditions/description dimensions 20.40 x 10.00 x 7.00 (0.803 x 0.340 x 0.276 inch) min case material Plastic (UL94-V0) typ max mm weight 2.4 g MECHANICAL DRAWING units: mm tolerance: ±0.25 pin section tolerance: ±0.10 mm Layout Side View 20.40 2.54 2.54 7.00 14 10 8 1 4.10 7 Bottom View PIN CONNECTIONS 15.24 7.62 1 14 7 10 8 10.00 cui.com units PIN FUNCTION 1 -Vin 7 NC 8 +Vout 10 -Vout 14 +Vin For more information, please visit the product page. CUI Inc │ SERIES: VFSD1-DIP │ DESCRIPTION: DC-DC CONVERTER date 03/14/2016 │ page 5 of 6 APPLICATION NOTES 1. Input filtering To reduce the reflected ripple current and minimize EMI, especially when the converter input is more than 2” away from the DC source, it is recommended to connect a low ESR electrolytic capacitor between Vin and Gnd. The values suggested are as shown in Table 1. If additional filtering is required, the capacitance may be increased, or expanded to an LC network as shown in Figure 1. Table 1 Input Voltage External Input Capacitance 5V 4.7 μF 12 V 2.2 μF 15 V 2.2 μF 24 V 1.0 μF Figure 1 -Vin L L +Vin DC DC C +Vout C -Vout 2. Output filtering An output capacitor is needed to meet output ripple requirements as shown in Table 2. Output capacitance may be increased for additional filtering, but should not exeed 10μF or expanded to an LC network as in Figure 1. Table 2 Output Voltage External Output Capacitance +Vin 3.3, 5 V 4.7 μF -Vin 9V 2.2 μF 12 V 1.0 μF 15 V 0.47 μF 24 V 0.33 μF REG +Vout DC DC -Vout Figure 2 +Vin -Vin REG +Vout DC DC -Vout 3. Minimum loading The converter needs a minimum of 10% loading to maintain output regulation. Operation under no-load conditions will not cause immediate damages but may reduce reliability, and cause performance not to meet specifications. 4. Regulation With a semi-regulated design, the converter’s output voltage varies with load current and will change proportionally to the input voltage. If regulated output is needed, an external regulator can be used as shown in Figure 2. 5. Protection The converter has minimal protection against input over-voltage or output over-load, and may be permanently damaged if exposed to these conditions. An input clamping device can be used for input voltage limiting. An input fuse or an output fuse can also be used to protect against over-loading. 6. External Regulator An external 3-terminal regulator can be connected to the output of the converter to achieve full regulation. Make sure the converter’s output voltage provides sufficient head room for the regulator. An additional benefit is that the built-in protection features in the regulator, such as OCP, OTP, etc, will protect the converter also. In a complimentory supply, a negative output regulator must be used to achieve the negative regulated output. Note: All specifications measured at 25°C, humidity <75%, nominal input voltage, and full load unless otherwise noted. cui.com For more information, please visit the product page. CUI Inc │ SERIES: VFSD1-DIP │ DESCRIPTION: DC-DC CONVERTER date 03/14/2016 │ page 6 of 6 REVISION HISTORY rev. description date 1.0 initial release 05/12/2006 1.01 new template applied 12/09/2010 1.02 new template applied, V-Infinity branding removed 07/17/2012 1.03 picture updated 09/05/2012 1.04 updated spec 07/11/2013 1.05 updated spec 03/14/2016 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.