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| 1/3 VESD2-DIP Series Dc-Dc Converter Rev. 01-2006 Description Designed to convert fixed voltages into an isolated voltage, the VESD2-DIP series is well suited for providing board-mount local supplies in a wide range of applications, including mixed analog/digital circuits, test & measurement equip., process/machine controls, datacom/telecom fields, etc... The semi-regulated output can be followed by 3-terminal regulators to provide output protection, in addition to output regulation. Features *Isolated 2 W output *Temperature range: -40C~+85C *Unregulated *High efficiency to 82% *Dual voltage output *Small footprint *DIP package style *Industry standard pinout *UL94-V0 package *No heatsink required *3K Vdc isolation *Power density 1.42 W/cm *No external component required *Low cost Model Number VESD2-S5-D5-DIP VESD2-S5-D9-DIP VESD2-S5-D12-DIP VESD2-S5-D15-DIP VESD2-S12-D5-DIP VESD2-S12-D9-DIP VESD2-S12-D12-DIP VESD2-S12-D15-DIP VESD2-S24-D5-DIP VESD2-S24-D9-DIP VESD2-S24-D12-DIP VESD2-S24-D15-DIP Input Voltage Nominal Range 5 Vdc 4.5~5.5 Vdc 5 Vdc 4.5~5.5 Vdc 5 Vdc 4.5~5.5 Vdc 5 Vdc 4.5~5.5 Vdc 12 Vdc 10.8~13.2 Vdc 12 Vdc 10.8~13.2 Vdc 12 Vdc 10.8~13.2 Vdc 12 Vdc 10.8~13.2 Vdc 24 Vdc 21.6~26.4 Vdc 24 Vdc 21.6~26.4 Vdc 24 Vdc 21.6~26.4 Vdc 24 Vdc 21.6~26.4 Vdc Output Voltage 5 Vdc 9 Vdc 12 Vdc 15 Vdc 5 Vdc 9 Vdc 12 Vdc 15 Vdc 5 Vdc 9 Vdc 12 Vdc 15 Vdc Output Current Max. Min. 200 mA 20 mA 111 mA 12 mA 83 mA 9 mA 67 mA 7 mA 200 mA 20 mA 111 mA 12 mA 83 mA 9 mA 67 mA 7 mA 200 mA 20 mA 111 mA 12 mA 83 mA 9 mA 67 mA 7 mA Efficiency 82% 83% 85% 85% 83% 84% 86% 86% 84% 85% 87% 87% Package Style DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP DIP Output Specifications Item Output power Line Regulation Load Regulation Output voltage accuracy Temperature drift Output ripple Switching frequency Note: 1. All specifications measured at TA=25C, humidity <75%, nominal input voltage and rated output load unless otherwise specified. Test conditions Min. 0.2 Typ. For Vin change of 1% 10% to 100% full load See tolerance envelope graph @ 100% load 20 MHz Bandwidth Full load, nominal input Max. 2 1.2% 15% 0.03 75 Units W 10% 50 75K %/C mVp-p Hz V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062 www.v-infinity.com 1-866-372-1258 2/3 VESD2-DIP Series Dc-Dc Converter Rev. 01-2006 General Specifications Short circuit protection Temperature rise at full load Cooling Operating temperature range Storage temperature range Soldering temperature Storage humidity range Case material MTBF Burn-in <1 second 25C Max, 15C Typ. Free air convection -40C to +85C -55C to +125C 300C (1.5mm from case for 10 sec.) <95% Plastic (UL94-V0) >3,500,000 hrs. Full load at +85C, for 4 hours at no-load and 4 hours at full load. Isolation Specifications Item Isolation Voltage Insulation Resistance Test Conditions Tested for 1 min. Test at 500 Vdc Min. 3000 1000 Typ. Max. Units Vdc M Typical Characteristics Ambient Temperature C Outline Dimensions & Recommended Layout Pattern Side View 20.40 14 98 7 Layout 8.20 4.10 1 Bottom View 10.00 7.62 1 14 7 10 9 8 15.24 Pin 1 7 8 9 10 14 -Vin NC +Vout COM -Vout +Vin Note: All Pins on a 2.54mm pitch; all pin diameters are 0.50mm; all dimensions in mm. V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062 www.v-infinity.com 1-866-372-1258 3/3 VESD2-DIP Series Dc-Dc Converter Rev. 01-2006 Application Notes: - 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. - 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. - 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. - 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. Table 1 Input Voltage 5V 12 V 24 V External Input Capacitance 4.7 F 2.2 F 1.0 F - 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 10F or expanded to an LC network as in Figure 1. - 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. - 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 Table 2 Vout 5V 9V 12 V 15 V External Ouput Capacitance 4.7 F 2.2 F 1.0 F 0.47 F 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. +Vout +Vin -Vin L L REG DC DC REG COM -Vout +Vout COM REG +Vin C DC DC C C +Vout COM -Vout +Vin -Vin -Vin DC DC -Vout V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062 www.v-infinity.com 1-866-372-1258 |
Price & Availability of VESD2-DIP
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