date 02/01/2012 page 1 of 5 SERIES: VESD1-SIP │ DESCRIPTION: DC-DC CONVERTER FEATURES • • • • • • • • 1 W isolated output industry standard 7 pin SIP 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 efficiency UL 60950 typ (Vdc) range (Vdc) (Vdc) min (mA) max (mA) typ (%) VESD1-S5-D5-SIP 5 4.5 ~ 5.5 ±5 ±10 ±100 72 YES VESD1-S5-D9-SIP 5 4.5 ~ 5.5 ±9 ±6 ±56 75 YES VESD1-S5-D12-SIP 5 4.5 ~ 5.5 ±12 ±5 ±42 78 YES VESD1-S5-D15-SIP 5 4.5 ~ 5.5 ±15 ±4 ±33 79 YES VESD1-S12-D5-SIP 12 10.8 ~ 13.2 ±5 ±10 ±100 74 YES VESD1-S12-D9-SIP 12 10.8 ~ 13.2 ±9 ±6 ±56 76 YES VESD1-S12-D12-SIP 12 10.8 ~ 13.2 ±12 ±5 ±42 79 YES VESD1-S12-D15-SIP 12 10.8 ~ 13.2 ±15 ±4 ±33 80 YES VESD1-S15-D5-SIP 15 13.5 ~ 16.5 ±5 ±10 ±100 74 NO VESD1-S15-D9-SIP 15 13.5 ~ 16.5 ±9 ±6 ±56 75 NO VESD1-S15-D12-SIP 15 13.5 ~ 16.5 ±12 ±5 ±42 79 NO VESD1-S15-D15-SIP 15 13.5 ~ 16.5 ±15 ±4 ±33 79 NO VESD1-S24-D5-SIP 24 21.6 ~ 26.4 ±5 ±10 ±100 74 YES VESD1-S24-D9-SIP 24 21.6 ~ 26.4 ±9 ±6 ±56 76 YES VESD1-S24-D12-SIP 24 21.6 ~ 26.4 ±12 ±5 ±42 80 YES VESD1-S24-D15-SIP 24 21.6 ~ 26.4 ±15 ±4 ±33 81 YES cui.com CUI Inc │ SERIES: VESD1-SIP │ DESCRIPTION: DC-DC CONVERTER date 02/01/2012 │ page 2 of 5 INPUT parameter conditions/description operating input voltage min typ max units 4.5 10.8 13.5 21.6 5 12 15 24 5.5 13.2 16.5 26.4 Vdc Vdc Vdc Vdc min typ max units 1.2 % 10 15 % 100 150 mVp-p 200 kHz ±0.03 %/°C max units 1 s max units OUTPUT parameter conditions/description line regulation for Vin change of 1% load regulation measured from 10% to full load voltage accuracy see tolerance envelope graph output ripple 20 MHz bandwidth switching frequency 100% load, input voltage range 100 temperature coefficient PROTECTIONS parameter conditions/description min typ short circuit protection SAFETY AND COMPLIANCE parameter conditions/description isolation voltage tested for 1 minute safety approvals UL 60950 insulation resistance at 500 Vdc RoHS compliant yes min MTBF typ 3,000 Vdc 1,000 MΩ 3,500,000 hours ENVIRONMENTAL parameter conditions/description min typ max units case operating temperature -40 85 °C storage temperature -55 125 °C 95 % 25 °C 300 °C storage humidity non-condensing temperature rise 100% load lead temperature 1.5 mm from the case for 10 seconds 15 cui.com CUI Inc │ SERIES: VESD1-SIP │ DESCRIPTION: DC-DC CONVERTER date 02/01/2012 │ 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 0.77 x 0.39 x 0.24 inch (19.60 x 10.00 x 6.0 mm) min case material plastic UL94-V0 weight typ max 2.1 MECHANICAL DRAWING Units: mm All pins on a 2.54mm pitch All pin diameters are 0.50mm Side View Recommended Footprint 1.00 + 0.15/-0 2.54 19.60 1 2 10.00 1 2 5 6 7 5 6 7 4.10 2.54 PIN CONNECTIONS 1 1.25 2.00 1 2 5 6 7 6.00 15.24 Bottom View cui.com +Vin 2 -Vin 5 -Vout 6 COM 7 +Vout units g CUI Inc │ SERIES: VESD1-SIP │ DESCRIPTION: DC-DC CONVERTER date 02/01/2012 │ page 4 of 5 APPLICATION NOTES 1. Requirement on Output Load In order to ensure the product operates efficiently and reliably, make sure the specified range of input voltage is not exceeded and the minimum output load is not less than 10% load. If the actual load is less than the specified minimum load, the output ripple may increase sharply while its efficiency and reliability will reduce greatly. If the actual output power is very small, please add an appropriate resistor as extra loading. 2. Overload Protection Under normal operating conditions, the output circuit of these products has no protection against over-current and short-circuits. The simplest method is to connect a self-recovery fuse in series at the input end or add a circuit breaker to the circuit. 3. Filtering In some circuits which are sensitive to noise and ripple, a filtering capacitor may be added to the DC/DC output end and input end to reduce the noise and ripple. However, the capacitance of the output filter capacitor must be proper. If the capacitance is too big, a startup problem might arise. For every channel of output, provided the safe and reliable operation is ensured, the greatest capacitance of its filter capacitor sees the external capacitor table. To get an extremely low ripple, an “LC” filtering network may be connected to the input and output ends of the DC/DC converter, which may produce a more significant filtering effect. It should also be noted that the inductance and the frequency of the “LC” filtering network should be staggered with the DC/DC frequency to avoid mutual interference (Figure 1). L L Figure 1 +Vout +Vin DC DC C -Vin 4. C COM L C -Vout Output Voltage Regulation and Over-voltage Protection Circuit The simplest device for output voltage regulation, over-voltage and over-current protection is a linear voltage regulator with overheat protection that is connected to the input or output end in series (Figure 2). +Vin Figure 2 +Vout REG DC DC COM -Vin -Vout REG +Vin DC DC -Vin 5. +Vout COM REG -Vout External Capacitor Table It is not recommended to connect any external capacitor in the application field with less than 0.5 W output. Table 1 Vin (Vdc) Cout (μF) Vout (Vdc) Cout (μF) 5 4.7 5 4.7 12 2.2 9 2.2 24 1 12 1 -- -- 15 0.47 cui.com CUI Inc │ SERIES: VESD1-SIP │ DESCRIPTION: DC-DC CONVERTER date 02/01/2012 │ page 5 of 5 REVISION HISTORY rev. description date 1.0 initial release 12/09/2010 1.01 template update 02/02/2012 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.