www.schmid-m.com DC/DC Converter SB_XT-1WR2 Series 1W, FIXED INPUT, ISOLATED & UNREGULATED SINGLE OUTPUT FEATURES Miniature SMD package 1VDC isolation Operating temperature range: -4 ~+15 Internal SMD construction No external component required Industry standard pinout PART NUMBER SYSTEM SB5XT-1WR2 Rated Power Package Output Voltage Input Voltage Product Series APPLICATIONS The SB_XT-1WR2 Series are designed for application where isolated output is required from a distributed power system. These products apply to where: 1) Input voltage rang ±1%; 2) 1VDC input and output isolation; 3) Regulated and low ripple noise is not required. Such as: digital circuits, low frequency analog circuits, and relay drive circuit. SELECTION GUIDE Model Input Voltage Nominal (Range) Output Voltage Output Current (ma) Max. Min. Input Current (ma)(typ.) @Max. @No Reflected Ripple Current (ma.typ.) Max.Capacitive (µf) Efficiency (%, Typ.) @Max. SB33XT-1WR2 3.3 33 3 415 73 SB35XT-1WR2 3.3 (2.97-3.63) 5 2 2 388 25 78 SB315XT-1WR2 15 67 7 379 SB3XT-1WR2 3.3 33 3 263 SB5XT-1WR2 5 2 2 2 SB9XT-1WR2 5 9 111 12 2 2 SB512XT-1WR2 (4.5-5.5) 12 84 9 2 SB515XT-1WR2 15 67 7 2 SB524XT-1WR2 24 42 4 2 SB123XT-1WR2 3.3 33 3 111 15 22 SB125XT-1WR2 5 2 2 14 SB129XT-1WR2 12 (1.8-13.2) 9 111 12 14 15 SB1212XT-1WR2 12 84 9 13 81 SB1215XT-1WR2 15 67 7 13 81 SB1515XT-1WR2 SB245XT-1WR2 15 (13.5-16.5) 15 67 7 82 1 81 5 2 2 52 SB249XT-1WR2 24 9 11 11 52 7 SB2415XT-1WR2 (21.6-26.4) 15 67 7 51 81 SB2424XT-1WR2 24 42 4 51 81 INPUT SPECIFICATIONS Input Surge Voltage (1 sec. max.) Input Filter 3.3VDC Input -.7 -- 5 5VDC Input -.7 -- 9 12VDC Input -.7 -- 18 15VDC Input -.7 -- 21 24VDC Input -.7 -- 3 Capacitance Filter 76 VDC Page 1 of 5
OUTPUT SPECIFICATIONS Output Voltage Accuracy Line Regulation For change of±1% Regulation 1% to % load See tolerance envelope curve 3.3V output -- -- ±1.5 Others -- -- ±1.2 3.3V output -- 18 -- 5V output -- 12 -- 9V output -- 8 -- 12V output -- 7 -- 15V output -- 6 -- 24V output -- 5 -- Temperature Drift % load -- -- ±.3 %/ C Ripple & Noise* Short Circuit Protection 2MHz Bandwidth Output Voltage 12V -- 3 -- Output Voltage:15V, 24V -- -- Note:* Ripple and noise tested with parallel cable method. See detailed operation instructions at DC-DC Application Notes. Continuous, automatic recovery % mvp-p COMMON SPECIFICATIONS Isolation Voltage Input-Output, tested for 1 minute and leakage current less than 1 ma 1 -- -- VDC Isolation Resistance Input-Output, test at VDC -- -- MΩ Isolation Capacitance Inpu-Output,KHz/.1V -- 2 -- pf Switching Frequency Full load, nominal input -- 3 KHz MTBF MIL-HDBK-217F@25 3 -- -- K hours Case Material Epoxy Resin (UL94-V) Weight -- 1.5 -- g ENVIRONMENTAL SPECIFICATIONS Storage Humidity Non condensing -- -- 95 % Operating Temperature Power derating (above, see Figure 2) -4 -- 15 Storage Temperature -55 -- 125 Temp. rise at full load Ta=25 C -- 25 -- C Lead Temperature 1.5mm from case for 1 seconds -- -- 3 Cooling Free air convection EMC SPECIFICATIONS EMI CE RE CISPR22/EN522 CLASS B(Recommended Circuit Refer to Figure1) CISPR22/EN522 CLASS B(Recommended Circuit Refer to Figure1) EMS ESD IEC/EN-4-2 Contact ±8KV perf. Criteria B EMI RECOMMENDED CIRCUIT EMI Typical Recommended Circuit(CLASS B): LDM Recommended external circuit parameters: +Vo (V) 3.3/5/12/15/24 C EUT LO AD EMI C 4.7µF /V LDM 6.8µH G ND G ND V (Figure1) Page 2 of 5
EMI TEST WAVEFORM (RECOMMENDED CIRCUIT FINGURE 1) SB5XT-1WR2 CE(Class B, Positive line) SB5XT-1WR2 CE(Class B, Negative line) PRODUCT TYPICAL CURVE +1% +5% Rated Output Voltage Output Voltage Accuracy(%) Tolerance Envelope Curve Typical Line 7 Output Current Percent(%) (Nominal Input Voltage) +2.5% -2.5% -7.5% Efficiency VS Input Voltage curve (Full ) 95 9 85 7 65 55 4.5 4.6 4.7 4.8 4.9 5. 5.1 5.2 Input Voltage(V) 5.3 SB5XT-1WR2 5.4 5.5 Output Power Percent(%) 12 4 2 Temperature Derating Curve Safe Operating Area -4 4 15 Environment Temp.( ) (Figure 2) Efficiency VS Output curve (=-nominal) 9 7 4 3 2 1 1 2 3 4 7 9 Total Output Current (%) SB5XT-1WR2 Efficiency VS Input Voltage curve (Full ) 95 9 85 7 65 55 21.6 22.1 22.6 23.1 23.5 24. 24.5 25. Input Voltage(V) SB2415XT-1WR2 25.4 25.9 26.4 Efficiency VS Output curve (=-nominal) 9 7 4 3 2 1 1 2 3 4 7 9 Total Output Current (%) SB2415XT-1WR2 Page 3 of 5
Recommended reflow soldering profile refer to IPC/JEDEC J-STD-2D standard, our products recommend reflow soldering profile as follows: 2 245 Peak.Temp 245 (Max.) Temperature ( ) 217 2 1 Sec Max (>217 ) Time (sec.) DIMENSIONS, RECOMMENDED FOOTPRINT & PACKAGING Page 4 of 5
TEST CONFIGURATIONS Input Reflected-Ripple Current Test Setup Input reflected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance. Oscilloscope Lin Cin Current Probe DC DC Lin(4.7µH) Cin(22µF, ESR < 1.Ω at KHz) DESIGN CONSIDERATIONS 1) Requirement on output load To ensure this module can operate efficiently and reliably, During operation, the minimum output load could not be less than 1% of the full load. If the actual output power is very small, please connect a resistor with proper resistance at the output end in parallel to increase the load. 2) Overload Protection Under normal operating conditions, the output circuit of these products has no protection against overload. The simplest method is to add a circuit breaker to the circuit. 3) Recommended circuit If you want to further decrease the input/output ripple, an capacitor filtering network may be connected to the input and output ends of the DC/DC converter, see (Figure 3). It should also be noted that the capacitance of 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 recommended capacitance of its filter capacitor sees (Table 1). +Vo Cin DC DC Cout GND V (Figure 3) EXTERNAL CAPACITOR TABLE (Table 1) Cin (µf) Vo Cout (µf) 3.3 4.7 3.3 1 5 4.7 5 1 12 2.2 9 4.7 15 2.2 12 2.2 24 1 15 1 - -- 24.47 It s not recommended to connect any external capacitor in the application field with less than.5 watt output. 4) The input and the output of the product are recommended to be connected to ceramic capacitor or electrolytic capacitor. Using tantalum capacitor may cause risk of failure 5) It is not recommended to increase the output power capability by connecting two or more converters in parallel. The product is not hot-swappable Note: 1. Operation under minimum load will not damage the converter; However, they may not meet all specifications. 2. Max. Capacitive is tested at nominal input voltage and full load. 3. Unless otherwise noted, All specifications are measured at Ta=25 C, humidity<%, nominal input voltage and rated output load. 4. In this datasheet, all test methods are based on our corporate standards. 5. All characteristics are for listed models, and non-standard models may perform differently.please contact our technical support for more detail. 6. Please contact our technical support for any specific requirement. 7. Specifications of this product are subject to changes without prior notice. Schmid Multitech GmbH Page 5 of 5 The Copyright and authority for the interpretation of the products are reserved by SCHMID-M. Specifications subject to change without notice.