rev. date 08/2007 features · isolated 2 Designed to convert fixed voltages into an isolated voltage, the VBSD2-SIP 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. model number VBSD2-S5-S5-SIP VBSD2-S5-S9-SIP VBSD2-S5-S12-SIP VBSD2-S5-S15-SIP VBSD2-S12-S5-SIP VBSD2-S12-S9-SIP VBSD2-S12-S12-SIP VBSD2-S12-S15-SIP VBSD2-S24-S5-SIP VBSD2-S24-S9-SIP VBSD2-S24-S12-SIP VBSD2-S24-S15-SIP VBSD2-S24-S24-SIP 1 of 3 DESCRIPTION: DC/DC converter PART NUMBER: VBSD2-SIP series description page input voltage nominal 5 Vdc 5 Vdc 5 Vdc 5 Vdc 12 Vdc 12 Vdc 12 Vdc 12 Vdc 24 Vdc 24 Vdc 24 Vdc 24 Vdc 24 Vdc W output ·temperature range: -40°C~+85°C ·unregulated ·high efficiency to 86% ·single voltage output ·small footprint ·DIP package style ·industry standard pinout ·UL94-V0 package ·no heatsink required ·1K Vdc isolation ·power density 0.85 W/cm³ ·no external component required ·low cost range 4.5~5.5 Vdc 4.5~5.5 Vdc 4.5~5.5 Vdc 4.5~5.5 Vdc 10.8~13.2 Vdc 10.8~13.2 Vdc 10.8~13.2 Vdc 10.8~13.2 Vdc 21.6~26.4 Vdc 21.6~26.4 Vdc 21.6~26.4 Vdc 21.6~26.4 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 24 Vdc output current max. min. 400 mA 40 mA 222 mA 23 mA 167 mA 17 mA 133 mA 14 mA 400 mA 40 mA 222 mA 23 mA 167 mA 17 mA 133 mA 14 mA 400 mA 40 mA 222 mA 23 mA 167 mA 17 mA 133 mA 14 mA 83 mA 8 mA efficiency 81% 82% 84% 84% 82% 83% 85% 85% 83% 84% 86% 86% 86% 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 package style SIP SIP SIP SIP SIP SIP SIP SIP SIP SIP SIP SIP SIP rev. page 2 of 3 date 08/2007 DESCRIPTION: DC/DC converter PART NUMBER: VBSD2-SIP series OUTPUT SPECIFICATIONS item output power line regulation load regulation output voltage accuracy temperature drift output ripple switching frequency test conditions min. 0.2 for Vin change of 1% 10% to 100% full load see tolerance envelope graph @ 100% load 20 MHz bandwidth full load, nominal input typ. 10 100 75 max. 2 1.2 15 units W % % 0.03 150 %/°C mVp-p KHz GENERAL SPECIFICATIONS short circuit protection <1 second temperature rise at full load 25°C Max, 15°C typ. cooling free air convection operating temperature range -40°C to +85°C storage temperature range -55°C to +125°C soldering temperature 300°C (1.5mm from case for 10 sec.) storage humidity range <95% case material plastic (UL94-V0) safety approved to UL60950-1 (E222736) MTBF >3,500,000 hrs. burn-in full load at +85°C, 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. 1000 1000 typ. max units Vdc M Ω NOTE: 1. All specifications measured at TA=25°C, humidity <75%, nominal input voltage and rated output load unless otherwise specified. DIMENSIONS (mm) TYPICAL CHARACTERISTICS Side View Pin 1 2 4 6 +Vin -Vin -Vout +Vout Ambient Temperature ( C ) 2.54 Bottom View 1 2 4 6 1 2 4 6 Note: All Pins on a 2.54mm pitch; all pin diameters are 0.50mm; all dimensions in mm. 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 rev. page 3 of 3 date 08/2007 DESCRIPTION: DC/DC converter PART NUMBER: VBSD2-SIP series - Minimum loading APPLICATION NOTES: The converter needs a minimum of 10% loading to maintain output regulation. Operation under no-load conditions will not - Input filtering To reduce the reflected ripple current and minimize EMI, cause immediate damages but may reduce reliability, and especially when the converter input is more than 2” away from cause performance not to meet specifications. the DC source, it is recommended to connect a low ESR electrolytic capacitor between Vin and Gnd. The values - Regulation suggested are as shown in Table 1. If additional filtering is With a semi-regulated design, the converter’s output voltage required, the capacitance may be increased, or expanded to varies with load current and will change proportionally to the an LC network as shown in Figure 1. input voltage. If regulated output is needed, an external regulator can be used as shown in Figure 2. TABLE 1 - Protection The converter has minimal protection against input over- Input Voltage External Input Capacitance 3.3, 5 V 4.7 µF if exposed to these conditions. An input clamping device can 12 V 2.2 µF be used for input voltage limiting. An input fuse or an output 15 V 2.2 µF 24 V 1.0 µF voltage or output over-load, and may be permanently damaged fuse also be used to protect against over-loading. - 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 - Output filtering shouldn’t be used. An output capacitor is needed to meet output ripple requirements as shown in Table 2.Output capacitance may be - External Regulator increased for additional filtering, but should not exeed 10µF or An external 3-terminal regulator can be connected to the expanded to an LC network as in Figure 1. 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 TABLE 2 protection features in the regulator, such as OCP, OTP, etc, will protect the converter also. In a complimentory supply, a Vout External Ouput Capacitance 3.3, 5 V 4.7 µF 9V 2.2 µF 12 V 1.0 µF +Vin 15 V 0.47 µF -Vin 24 V 0.33 µF negative output regulator must be used to achieve the negative regulated output. +Vout REG DC DC -Vout REG +Vin L -Vin L +Vout +Vin C DC DC -Vin +Vout DC DC C -Vout <Figure 1> 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 -Vout