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| PWA_LT-1W5 & PWB_LT-1W5 Series 1.5W, WIDE INPUT ISOLATED & REGULATED SINGLE/DUAL OUTPUT DC/DC CONVERTER MINIATURE SMD PACKAGE multi-country patent protection RoHS FEATURES Wide (4:1) Input Range Short Circuit Protection(automatic recovery) 1500VDC Isolation Operating Temperature: -40C to +85C No Heat Sink Required No external component required MTBF>1,000,000 hours RoHS Compliance PRODUCT PROGRAM Input Part Number PWA2405LT-1W5 PWA2412LT-1W5* PWA2415LT-1W5* PWB2403LT-1W5* PWB2405LT-1W5* PWB2409LT-1W5* PWB2412LT-1W5* PWB2415LT-1W5* 24 9.0-36 40 Voltage (VDC) Nominal Range Max** Voltage (VDC) 5 12 15 3.3 5 9 12 15 5 12 15 48 18-72 80 3.3 5 9 12 15 Output Current (mA) Max 150 63 50 455 300 167 125 100 150 63 50 455 300 167 125 100 Min 15 6 5 45 30 17 12 10 15 6 5 45 30 17 12 10 74 78 80 72 76 78 79 80 74 76 78 72 76 78 79 80 Efficiency (%, Typ) APPLICATIONS The PWA_LT-1W5 & PWB_LT-1W5 Series are specially designed for applications where a wide range input voltage power supplies are isolated from the input power supply in a distributed power supply system on a circuit board. These products apply to: 1) Where the voltage of the input power supply is wide range(voltage range4:1); 2) Where isolation is necessary between input and output (Isolation Voltage 1500 VDC); 3) Where the regulation of the output voltage and the output ripple noise are demanded. PWA4805LT-1W5* PWA4812LT-1W5* PWA4815LT-1W5* PWB4803LT-1W5* PWB4805LT-1W5* PWB4809LT-1W5* PWB4812LT-1W5* PWB4815LT-1W5* *Designing. **Input voltage can't exceed this value, or will cause the permanent damage. Note: The load shouldn't be less than 10%, otherwise ripple will increase dramatically. Operation under 10% load will not damage the converter; However, they may not meet all specification listed. ISOLATION SPECIFICATIONS Item Isolation voltage Isolation resistance Isolation Capacitance Test Conditions Tested for 1 minute and 1mA max Test at 500VDC Input/Output Min 1500 1000 85 Typ Max Units VDC M pF MODEL SELECTION PWA2405LT-1W5 Rated Power Package Style Output Voltage Input Voltage Product Series OUTPUT SPECIFICATIONS Item Output Power Test conditions See above products program Min 0.15 1 3 0.5 0.2 35 300 Typ Max 1.5 3 5 1.5* 0.75 0.03 75 %/C mVp-p KHz % Units W Positive voltage accuracy Refer to recommended circuit Negative voltage accuracy Refer to recommended circuit Load Regulation Line Regulation Temperature Drift (Vout) Output ripple& Noise** From 10% to 100% load Input voltage from low to high Refer to recommended circuit 20MHz Bandwidth 100% load, nominal input voltage MORNSUN Science & Technology co.,Ltd. Address: 2th floor 6th building, Huangzhou Industrial District, Guangzhou, China Tel: 86-20-38601850 Fax: 86-20-38601272 Http://www.mornsun-power.com Switching Frequency *Dual output models unbalanced load: 5%. **Test ripple and noise by "parallel cable" method. See detailed operation instructions at Testing of Power Converter section, application notes. Note: 1. All specifications measured at TA=25C, humidity<75%, nominal input voltage and rated output load unless Otherwise specified. 2. See below recommended circuits for more details. MORNSUN reserves the copyright Specifications subject to change without notice. PWA_LT_1W5 & PWB_LT_1W5 A/2-2008 Page 1 of 2 COMMON SPECIFICATIONS Item Storage humidity range Operating Temp. range Storage Temp. range Temp. rise at full load Lead temperature Short circuit protection Cooling Case Material MTBF Weight 1000 5.2 1.5mm from case for 10 seconds -40 -55 15 245 Continuous, automatics recovery Free air convection Plastic(UL94-V0) K hours g Test conditions Min Typ Max 95 85 125 C Units % Recommended Circuit All the PWA_LT-1W5 & PWB_LT-1W5 Series have been tested according to the following recommended testing circuit before leaving factory. This series should be tested under load. (see Figure 1). Vin Cin +Vout DC DC 0V -Vout GND Single Output Vin Cin +Vout DC DC 0V TYPICAL TEMPERATURE CUTVE Temperature Derating Graph GND Figure 1 If you want to further decrease the input/output ripple, you can increase capacitance properly or choose capacitors with low ESR. However, the Safe Operating Area capacitance of the output 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 Operating Temp.( C ) ensured, the greatest capacitance of its filter capacitor sees (Table 1). General: Cin: 12V 24V&48V 100F 10F-47F RECOMMENDED REFLOW SOLDERING PROFILE R e com m ended R e flo w Pro fil e 50 Sec M ax ( >22 0) P eak.Te m p 235~ 2 45 250 Cout: 10F/100mA Output External Capacitor Table(Table 1) Single Vout Cout Dual Vout Cout (VDC) (uF) (VDC) (uF) 3.3 2200 5 680 5 1000 9 470 9 680 12 330 12 470 15 220 15 330 Input Current When it is used in unregulated power supply, be sure that the fluctuating range of the power 0. 15 200 Tem pe ra tu re ( ) 90 S ec M ax ( >1 90) 150 100 50 0 Tim e (s ec.) OUTLINE AND SOLDER PAD DIMENSIONS 23. 86 [ 0. 94] 15. 25[ 0.6 ] 0 .50 [0 .020 7. 5 [ 0.3 ] 8. 2 [ 0.3 2] Side Vie w 0.15 1.4 [0 .05 5] supply and the rippled voltage do not exceed the module standard. Input current of power supply should afford the flash startup current of this kind of DC/DC module (Figure 2) 1 3.1 [ 0.5 2] 17 .78 [0. 7] Pin Con ne ctio ns 1.0 2 [0. 04] 0.5 [0 .02 ] 0. 8 [ 0.0 3] Pin 1 16 13. 7 [0. 54] Top View 2. 0 [0. 08] 10 9 7 18. 5 [0.73 ] 8 9 10 3.04 [ 0.1 2] 15. 24 [ 0.6 0] 2.5 4 [0. 10] 15 .2 [0 .60 ] 2.5 4 [ 0. 10] 16 NC NC +Vo 0V Vin NC 0V +Vo -Vo Vin Sing le GN D D ual GND General: Ip 1.4*Iin-max: Input Current(A) Ip 1 7 8 Input Voltage Range Input Voltage (V) Note: Unit: mm[inch]; Tolerance: 0.25mm; All Pins on a 2.54mm . APPLICATION NOTE Requirement On Output Load In order to ensure the product operate efficiently and reliably, in addition to a max load (namely full load), a minimum load is specified for this kind of DC/DC converter. Make sure the specified range of input voltage is not exceeded, the minimum output load no less than 10% load. If the actual load is less than the specified minimum load, the output ripple may increase sharply while its efficiency and reliability will reduce greatly. If the actual output power is very small, please add an appropriate resistor as extra loading, or contact our company for other lower output power products. MORNSUN reserves the copyright Specifications subject to change without notice. PWA_LT_1W5 & PWB_LT_1W5 A/2-2008 Page 2 of 2 No parallel connection or plug and play. |
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