SPDC400-4W DC-DC step down power supply Preliminary Data Features ■ Module DC-DC step down single output ■ Wide range input voltage 100÷370 Vdc ■ Output power 4.0 W Typ ■ Output voltage precision 5% ■ Output short circuit protection ■ No heatsink required ■ Not - latching overload and short circuit protection ■ MTBF > 1.000.000 hours (TA = 25°C) ■ Incapsulated or open frame packages ■ Pins or comb insertion ■ RoHS compliant Comb BT = Encapsulated through hole Through hole Description The DC-DC module is a high efficiency DC-DC not insulated switch mode constant voltage generator. FT = Open frame through hole Designed for industrial application where low voltages are required from main. Step down converter performs a typ 4.0 W power conversion. The output voltages and current level are set up by design in accordance with customer requirements. Typical reference values for the shelf solution are: ■ FC = Open Frame Single output -12 V, ±5%, 0.35 A. Table 1. Device summary Order codes Package Connections SPDC400BT12M0.35 Encapsulated Through hole SPDC400FT12M0.35 Open frame Through hole SPDC400FC12M0.35 Open frame Comb October 2007 Rev 1 This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. 1/10 www.st.com 10 Contents SPDC400-4W Contents 1 Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Mechanical dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2/10 SPDC400-4W 1 Application diagram Application diagram Figure 1. Application diagram (For through hole version C must be 100 µF minimum, for Comb version C can be avoided 1A FUSE POWER MODULE L1 -12V (RECOMMENDED FOR SAFETY COMPLIANCE) 10µF 400V N1 C 1000µF ESR 0.1 Ω RTN 3/10 Electrical characteristics 2 Electrical characteristics Table 2. Symbol Vi Parameter Test condition Input voltage Min. Typ. 100 -12 Max. Unit 370 Vdc -11.4 V Output voltage Vi = 100 to 370 Vdc -12.6 Io2 Output current Vi = 100 to 370 Vdc 0.35 Vor Output ripple Vi = 100 to 370 Vdc Iosc Output short circuit current Vi = 100 to 370 Vdc Hiccup Mode A Efficiency Vi = 100 to 370 Vdc Io=0.35 A 80 % P stand by ● Electrical characteristics (TA = 25°C, unless otherwise specified.) Vo1 n 4/10 SPDC400-4W A 5% Power losses in no load Vi = 320 Vdc condition Io = 0 mA 0.3 mVpp W Iir Inrush input current Top Operating ambient temperature -10 85 °C Tstg Storage temperature range -20 90 °C Vi = 320 Vdc 30 Agency approvals The safety and EMI compliance has to be assured by the user. A SPDC400-4W Mechanical dimensions In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect . The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com Figure 2. SPDC400BT mechanical data (dimensions in mm) 35.6 14 21.6 Ø0.65 5 1x45° SPDC400FT mechanical data (dimensions in mm) 34.1 1 2 11 max. 3 1 4 0.8x45° Ø0.65 5 Figure 3. 20.1 3 Mechanical dimensions 5/10 Mechanical dimensions 6/10 Figure 4. SPDC400FC mechanical data side view (dimensions in mm) Figure 5. SPDC400FC mechanical data top view (dimensions in mm) SPDC400-4W SPDC400-4W Connection diagram Table 3. Pin description Pin Function 1 L1 DC input voltage 2 N1 DC input voltage 3 -12V Output voltage 4 RTN Output voltage return SPDC400BT and SPDC400FT connection diagram 31.8 = = 2.5 = 3 2 1 = 4 5.1 Figure 6. Description 5.1 4 Connection diagram BOTTOM VIEW Figure 7. SPDC400FC connection diagram 7/10 Ordering information scheme 5 SPDC400-4W Ordering information scheme Table 4. Ordering information scheme SPDC 400 DC-DC converter Max VDC input F:Open Frame Package B:Encapsulated C: Comb Connection T:Through Hole Typ VDC Output P:Plus M:Minus Typ IDC Output 8/10 Output voltage polarity X Y 12 Z 0.35 SPDC400-4W 6 Revision history Revision history Table 5. Document revision history Date Revision 11-Oct-2007 1 Changes First release 9/10 SPDC400-4W Please Read Carefully: Information in this document is provided solely in connection with ST products. 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