For more information, please visit the product page. date 07/11/2013 page 1 of 5 SERIES: VESD1-DIP │ DESCRIPTION: DC-DC CONVERTER FEATURES • • • • • • • • 1 W isolated output industry standard 7 pin DIP package dual unregulated outputs 3,000 V isolation short circuit protection UL safety approvals (some models) wide temperature (-40~85°C) efficiency up to 81% RoHS input voltage MODEL output voltage output current output power ripple and noise1 efficiency UL 60950 typ (Vdc) range (Vdc) (Vdc) min (mA) max (mA) max (W) max (mVp-p) typ (%) VESD1-S5-D5-DIP 5 4.5 ~ 5.5 ±5 ±10 ±100 1 150 72 YES VESD1-S5-D9-DIP 5 4.5 ~ 5.5 ±9 ±6 ±56 1 150 75 YES VESD1-S5-D12-DIP 5 4.5 ~ 5.5 ±12 ±5 ±42 1 150 78 YES VESD1-S5-D15-DIP 5 4.5 ~ 5.5 ±15 ±4 ±33 1 150 79 YES VESD1-S12-D5-DIP 12 10.8 ~ 13.2 ±5 ±10 ±100 1 150 74 YES VESD1-S12-D9-DIP 12 10.8 ~ 13.2 ±9 ±6 ±56 1 150 76 YES VESD1-S12-D12-DIP 12 10.8 ~ 13.2 ±12 ±5 ±42 1 150 79 YES VESD1-S12-D15-DIP 12 10.8 ~ 13.2 ±15 ±4 ±33 1 150 80 YES VESD1-S15-D5-DIP 15 13.5 ~ 16.5 ±5 ±10 ±100 1 150 74 NO VESD1-S15-D9-DIP 15 13.5 ~ 16.5 ±9 ±6 ±56 1 150 75 NO VESD1-S15-D12-DIP 15 13.5 ~ 16.5 ±12 ±5 ±42 1 150 79 NO VESD1-S15-D15-DIP 15 13.5 ~ 16.5 ±15 ±4 ±33 1 150 79 NO VESD1-S24-D5-DIP 24 21.6 ~ 26.4 ±5 ±10 ±100 1 150 74 YES VESD1-S24-D9-DIP 24 21.6 ~ 26.4 ±9 ±6 ±56 1 150 76 YES VESD1-S24-D12-DIP 24 21.6 ~ 26.4 ±12 ±5 ±42 1 150 80 YES VESD1-S24-D15-DIP 24 21.6 ~ 26.4 ±15 ±4 ±33 1 150 81 YES Notes: 1. ripple and noise are measured at 20 MHz BW VESD1-S XX -D XX -DIP Base Number Input Voltage cui.com Output Voltage For more information, please visit the product page. CUI Inc │ SERIES: VESD1-DIP │ DESCRIPTION: DC-DC CONVERTER date 07/11/2013 │ page 2 of 5 INPUT parameter conditions/description min typ max units operating 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 parameter conditions/description min typ max units line regulation for Vin change of 1% 1.2 % load regulation measured from 10% to full load 15 % voltage accuracy see tolerance envelope graph switching frequency 100% load, input voltage range OUTPUT 10 83 100 temperature coefficient 200 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 isolation voltage tested for 1 minute 3,000 min Vdc insulation resistance at 500 Vdc 1,000 MΩ safety approvals UL60950-1 (E222736) RoHS compliant yes 3,500,000 hours MTBF typ ENVIRONMENTAL parameter conditions/description min operating temperature storage temperature storage humidity non-condensing temperature rise at full load lead temperature 1.5 mm from case for 10 seconds max units -40 typ 85 °C -55 125 °C 95 % 25 °C 300 °C 15 cui.com For more information, please visit the product page. CUI Inc │ SERIES: VESD1-DIP │ DESCRIPTION: DC-DC CONVERTER date 07/11/2013 │ page 3 of 5 DERATING CURVES Load (%) 100 80 60 40 20 -40 -20 0 20 40 60 85 100 120 Ambient Temperature (°C) MECHANICAL parameter conditions/description dimensions 20.40 x 10.00 x 7.0 (0.803 x 0.394 x 0.276 inch) min case material plastic UL94-V0 typ max mm weight 2.1 g MECHANICAL DRAWING units: mm tolerance: ±0.25 pin section tolerance: ±0.10 mm Layout Side View 1.00ø +0.15/-0 2.54 2.54 20.40 14 7.00 10 9 8 1 7 4.10 PIN CONNECTIONS Bottom View 1 7 10.00 7.62 14 10 9 8 15.24 cui.com units 1 -Vin 7 NC 8 COM 9 +Vout 11 -Vout 14 +Vin For more information, please visit the product page. CUI Inc │ SERIES: VESD1-DIP │ DESCRIPTION: DC-DC CONVERTER date 07/11/2013 │ page 4 of 5 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 2. Input Voltage External Input Capacitance 5V 4.7 μF 12 V 2.2 μF 15 V 2.2 μF 24 V 1.0 μF L L +Vout +Vin DC DC C -Vin C COM L C -Vout Figure 1 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. Output Voltage Table 2 External Input Capacitance 5V 4.7 μF +Vout REG DC DC COM -Vin -Vout 9V 2.2 μF 12 V 1.0 μF 15 V 0.47 μF 24 V +Vin +Vin REG +Vout REG -Vout DC DC -Vin 0.33 μF COM Figure 2 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. Dual outputs used as a single output The +Vout and -Vout can be used to obtain a single output that is the sum of the two outputs. In this case, the COM pin shouldn’t be used. 7. 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: VESD1-DIP │ DESCRIPTION: DC-DC CONVERTER date 07/11/2013 │ page 5 of 5 REVISION HISTORY rev. description date 1.0 initial release 10/06/2009 1.01 template update 12/09/2010 1.02 new template applied, V-Infinity branding removed 09/07/2012 updated spec 07/11/2013 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.