Isolation Power Transformers Toroid Platform SMD - PH9385.XXXNLT and PM2155.XXXNLT Push Pull Converter Transformer IEC 60950 and 61558 basic insulation Compliant, 12mm creepage 4KVrms isolation (600Vrms continuous) Patented: US Patent 9,646,755 Electrical Specifications 25C - Operating Temperature -40C to +125C 1 Part Number Inductance Leakage Inductance Capacitance DCR (1-4) DCR (5-8) ET (1-4) Turns Ratio Isolated 2 (1-4) (1-4) with (5-8) shorted (1, 4) to (5, 8) ( MAX) ( MAX) (V-sec Max) (1:4) (8:5) Voltage 8 Commerical Automotive (H 35%) (H MAX) (pF MAX) (Vrms) PH9385.011NL PM2155.011NL 3200 6.0 36 1.10 1.00 109 1CT : 1CT PH9385.045NL PM2155.045NL 3200 4.0 36 1.10 1.25 109 4CT : 5CT PH9385.034NL PM2155.034NL 2600 3.0 36 1.00 1.50 98 3CT : 4CT PH9385.012NL PM2155.012NL 2600 3.0 40 1.00 1.90 98 1CT : 2CT 4000 PH9385.038NL PM2155.038NL 2600 3.0 40 1.00 2.20 98 3CT : 8CT PH9385.013NL PM2155.013NL 2600 3.0 40 1.00 2.75 98 1CT : 3CT PH9385.027NL PM2155.027NL 2600 3.0 40 1.00 3.00 98 2CT : 7CT PH9385.015NL PM2155.015NL 1350 3.0 30 0.80 3.20 70 1CT :5CT Notes: 1. The ET Max is calculated to limit the core loss and temperature rise at 200KHz based on C. To calculate temperature rise, use the following formula: a bipolar flux swing of 180mT Peak. Temperature Rise (C) = 100 * (Core Loss(W) + Copper Loss (W)) 2. For Push-Pull topology, where the voltage is applied across half the primary winding 4. The AEC-Q200 temperature and humidity operational life testing was completed using turns, the ET needs to be derated by 50% for the same flux swing. a dielectric strength test of 4000Vdc. 3. The applied ET may need to be further derated for higher frequencies based on the 5. Optional Tape & Reel packing can be ordered by adding a T suffix to the part number temperature rise which results from the core and copper losses (i.e. PH9385.011NL becomes PH9385.011NLT). Pulse complies to industry standard tape A. To calculate total copper loss (W), use the following formula: and reel specification EIA481. 2 2 Copper Loss (W) = Irms Primary * DCR Primary + Irms Secondary *DCR Second- 6. The NL suffix indicates an RoHS-compliant part number. ary. 7. Continuous isolation voltage confirmed by 125C/1000hrs accelerated aging with the B. To calculate total core loss (W), use the following formula: bias voltage applied between primary and secondary windings. 1.7 2.17 Core Loss (W) = 3.93E-10 * (Frequency in kHz) * (180 * ET/ET Max ) 8. The PM2155.XXXNLT part numbers are AEC-Q200 and IATF16949 certified. The mechani - Where ET is the applied Volt Second, ET Max is the rated Volt Second for 180mT flux cal dimensions are 100% tested in production but do not necessarily meet aproduct swing capability index (Cpk) >1.33 and therefore may not strictly conform to PPAP. Mechanical Schematic 6X.148 PH9385.0XNLT and PM2155.0XXNLT 3.75 1 8 857 6 .295 MAX 7.5 MAX 2 7 .600 .005 0.13 6 15.25 3 8 SURFACES .079 2.00 6X.148.010 5 4 3.750.25 7 6 1423 (.030) .079 0.75 2.00 Weight .............................2.5/grams Tray ......................................80/tray .669 MAX PH9385.0xxNL 17 MAX DATE CODE ORIGIN PAT. PEND591.012 Inches 15.000.30 Dimensions: mm Unless otherwise specified, PIN 1 ID .010 .630 MAX all tolerances are 16 MAX 0,25 .006 0.15 MIN 1 power.pulseelectronics.com P766. K (05/19) Marking Marking Isolation Power Transformers Toroid Platform SMD - PH9385.XXXNLT and PM2155.XXXNLT TAPE & REEL INFO W A K0 P1 G Direction of tape SURFACE MOUNTING TYPE, REEL/TAPE LIST REEL SIZE (mm) TAPE SIZE (mm) QTY PART NUMBER A G P W K PCS/REEL 1 0 PH9385.XXXNLT/PM2155.XXXNLT 330 32.4 24 32 8.3 300 APPLICATION PH9385.XXXNL is a series of high isolation power supply transformer drivers. Intended to operate in a fixed duty cycle Push Pull topology, it is a part of a low cost solution for delivering lower power (up to 2.5W) from a low voltage source. A typical implementation would be an isolated RS-485 power supply driver circuit, the design is compatible with the MAXIM MAX253 IC. Other ICs include Texas SN6501 UCC2808, Analog ADuM4070, ADuM447x. A schematic diagram for the Push Pull converter topology is given below. VIN PH9385 VCC D1 VOUT DRIVER IC D2 GND For a fixed 50% duty cycle mode of operation, the output voltage is simply determined by the input voltage and turns ratio. So, with the available turns ratios, a variety of output voltages can be selected. This range can be extended by implementing different topologies such as forward or bridge and can be used with controllers offered by different IC vendors for a number of different applications. 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