FEATURES ● Efficiency up to 78% ● Super Miniature SIP Package ● 1KVDC Isolation ● Operating Temperature Range: -40°C to +85°C ● Low Temperature Rise ● No external component required ● Industry standard pinout B_M-1W Series 1W, SUPERMINIATURE FIXED INPUT ISOLATED & UNREGULATED SINGLE OUTPUT DC-DC CONVERTER Patent Protection RoHS APPLICATIONS PART NUMBER SYSTEM The B_M-1W Series are designed for application where B0505M -1W isolated output is required from a distributed power system. Rated Power Package St yle Out put Voltage Input Voltage Produc t Ser ies These products apply to where: 1) Input voltage variation ≤ ±10%; 2) 1KVDC input and output isolation; 3) Regulated and low ripple noise is not required. Such as: digital circuits and low frequency analog circuits. SELECTION GUIDE Model Number B0303M-1W B0305M-1W Input Voltage(VDC) Nominal (Range) 3.3 (3.0-3.6) B0512M-1W 5 (4.5-5.5) Min. 3.3 303 30 Reflected Ripple Current (mA,typ.) Max. Capacitive Load(µF) 373 Efficiency (%, typ.) @Max. Load Approval 69 5 200 20 389 74 5 200 20 251 70 9 111 12 256 12 83 9 252 15 67 7 244 78 5 200 20 118 70 12 83 9 106 15 67 7 105 76 20 B0515M-1W B1205M-1W B1212M-1W Max. Input Current (mA)(typ.) @Max. @No Load Load 40 B0505M-1W B0509M-1W Output Current (mA) Output Voltage (VDC) 12 (10.8-13.2) B1215M-1W 20 220 15 77 77 78 INPUT SPECIFICATIONS Item Test Conditions Min. Typ. Max. 3.3VDC input -0.7 -- 5 -0.7 -- 9 -- 18 Input Surge Voltage (1sec. max.) 5VDC input 12VDC input -0.7 Unit VDC Capacitance Filter Input Filter OUTPUT SPECIFICATIONS Item Test Conditions Min. Output Power 0.1 Output Voltage Accuracy Line Regulation Load Regulation Typ. Max. Unit -- 1 W See tolerance envelope curve For Vin change of ±1% 10% to 100% load -- -- ±1.2 3.3VDC output -- 12 20 5VDC output -- 10.5 15 9VDC output -- 8.3 10 12VDC output -- 6.8 10 15VDC output -- 6.3 10 The copyright and authority for the interpretation of the products are reserved by MORNSUN B_M-1W B/1-2012 % Page 1 of 4 Temperature Drift 100% load -- -- ±0.03 %/°C Ripple & Noise* 20MHz Bandwidth -- 75 100 mVp-p -- -- 1 s Short Circuit Protection** Note: 1.*Test ripple and noise by “parallel cable” method. See detailed operation instructions at Testing of Power Converter section, application notes. 2.**Supply voltage must be discontinued at the end of short circuit duration. COMMON SPECIFICATIONS Item Test Conditions Min. Typ. Max. Unit Isolation Voltage Tested for 1 minute and leakage current less than 1 mA 1000 -- -- VDC Isolation Resistance Test at 500VDC 1000 -- -- MΩ Isolation Capacitance Input/Output,100KHz/1V -- 30 -- pF Switching Frequency Full load, nominal input -- 100 -- KHz MTBF MIL-HDBK-217F@25℃ 3500 -- -- K hours -- 1.05 Case Material Plastic (UL94-V0) Weight -- g ENVIRONMENTAL SPECIFICATIONS Item Test Conditions Min. Typ. Max. Unit Storage Humidity Non condensing -- -- 95 % -40 -- 85 Operating Temperature Power derating (above 85℃) Storage Temperature -55 -- 125 Temp. rise at full load -- 25 -- -- 300 Lead Temperature 1.5mm from case for 10 seconds -- Cooling °C Free air convection EMC SPECIFICATIONS EMI CE CISPR22/EN55022 CLASS A（External Circuit Refer to Figure1） EMS ESD IEC/EN61000-4-2 Contact ±8KV perf. Criteria B EMC RECOMMENDED CIRCUIT EMI Recommended External Circuit: Vi n Vin +Vo EUT C1 G ND G ND LO AD Recommended external circuit parameters: Vin：3.3V/5V/12V C1：1µF/50V Note: Product bare input of 3.3V、5V、12V already meet CLASS A, but the margin is not enough, add the capacitor margin increase. 0V (Figure 1) PRODUCT TYPICAL CURVE Temperature D erating Curve Output Voltage Accuracy(%) +5% Rated Output Voltage Typic al Lo ad Li ne +2.5% -2.5% -7.5% 50 70 100 Output Current Percent(%) Output Power Percent(%) Tolerance Envelope Curve +10% 120 100 80 60 Safe Operating Area 40 20 0 -40 0 40 85 105 120 Ambient Temp.(℃ ) (Nominal Input Voltage) The copyright and authority for the interpretation of the products are reserved by MORNSUN B_M-1W B/1-2012 Page 2 of 4 Efficiency VS Output Load curve (Vin=Vin-nominal) 5.5 5.4 5.3 5.2 5.1 5.0 4.9 4.8 4.7 Efficiency(%) 100 90 80 70 60 50 40 30 20 10 0 4.6 Efficiency(%) Efficiency VS Input Voltage curve (Full Load) B0505M-1W B0505M-1W 100 90 80 70 60 50 40 30 20 10 0 10 20 30 40 50 60 70 80 90 100 Total Output Current (% ) Input Voltage(V) OUTLINE DIMENSIONS, RECOMMENDED FOOTPRINT & PACKAGING RECOMMENDED FOOTPRINT 7.00 [0.276] MECHANICAL DIMENSIONS 0.50 [0.020] 4.10 [0.161] (Front View) 1 2 3 4 0.50[0.020] ∅1.00[0.039] Note:grid 2.54*2.54mm. 11.50 [0.453] 7.62 [0.300] TUBE OUTLINE DIMENSIONS 4 FOOTPRINT DETAILS Pin Function 1 GND 2 Vin 3 0V 4 +Vo 12.40 [0.488] 3 2 (Bottom View) 16.90 [0.665] 1 0.90 [0.035] 6.00 [0.236] 0.30 [0.012] 9.60 [0.378] 4.90 [0.193] Note: Unit :mm[inch] General tolerances: ± 0.50mm[ ± 0.020inch] L=530mm[20.866inch] Tube Quantity: 43pcs L=220mm[8.661inch] Tube Quantity: 17pcs Short tube inner package dimensions: L*W*H= 255*170*80mm Short tube outer package dimensions(with six inner package boxes): L*W*H= 375*280*270mm Long tube inner package dimensions: L*W*H= 580*200*100mm Long tube outer package dimensions(with two inner package boxes): L*W*H= 600*215*220mm Long tube outer package dimensions(with three inner package boxes): L*W*H= 600*215*325mm Note : Unit : mm[ inch ] Pin section tolerances : ±0.10mm[±0.004inch] General tolerances:±0.25mm[±0.010inch] 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 Lin(4.7µH) Current Probe DC DC Load Cin(220µF, ESR < 1.0Ω at 100 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 10% 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, or use our company’s products with a lower rated output power (B_M-W2 series). The copyright and authority for the interpretation of the products are reserved by MORNSUN B_M-1W B/1-2012 Page 3 of 4 2) Overload Protection Under normal operating conditions, the output circuit of these products has no protection against overload. The simplest method is 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 2). 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 Vin DC DC Cin Cout GND 0V (Figure 2) EXTERNAL CAPACITOR TABLE (TABLE 1) Vin Cin Vout Cout (VDC) (µF) (VDC) (µF) 3.3/5 4.7 3.3/5 10 12 2.2 9 4.7 -- -- 12 2.2 --15 1 It’s not recommended to connect any external capacitor in the application field with less than 0.5 watt output. 4) Output Voltage Regulation and Over-voltage Protection Circuit The simplest device for output voltage regulation, over-voltage and over-current protection is a linear regulator and an capacitor filtering network with overheat protection that is connected to the input or output end in series (Figure 3), the recommended capacitance of its filter capacitor sees (Table 1), linear regulator based on the actual voltage and current to reasonable selection. Vin REG REG GND +Vo DC DC 0V (Figure 3) 5) Cannot use in parallel and hot swap Note: 1. Operation under minimum load will not damage the converter; However, they may not meet all specification listed. 2. Max. Capacitive Load tested at input voltage range and full load. 3. All date in the datasheet are measured according to nominal input voltage, rated output load, TA=25℃ , humidity<75%, unless otherwise specified. 4. In this datasheet, all the test methods of indications are based on our corporate standards. 5. The performance in the datasheet is just fit for the part number in the selection guide, and may be different from the customer-designed product, you can get more details from MORNSUN FAE. 6. Contact us for your specific requirement. 7. Specifications subject to change without prior notice. MORNSUN Science & Technology Co.,Ltd. Address: No. 5, Kehui St. 1, Kehui development center, Science Ave., Guangzhou Science City, Luogang district, Guangzhou,P.R.China. Tel: 86-20-38601850 Fax:86-20-38601272 Http://www.mornsun-power.com The copyright and authority for the interpretation of the products are reserved by MORNSUN B_M-1W B/1-2012 Page 4 of 4