Isolation Power Transformers
Toroid Platform SMD PH9085.XXXNL and PM2180.XXXNL
Push Pull Converter Transformer
Functional insulation for isolated power supply driver
2.5KVrms isolation (380Vrms continuous)
Electrical Specifications @ 25°C - Operating Temperature -40°C to +125°C
Inductance
(1-3)
(µH 35%)
Leakage Inductance
(1-3) with (4-6) shorted (1, 2, 3) to (4, 5, 6)
Capacitance
Isolated
Voltage2
(Vrms)
Part Number
Commerical
Automotive6
DCR (1-3)
(Ω MAX)
DCR (4-6)
(Ω MAX) (V-µsec Max)
ET MAX (1-3)1
Turns Ratio
(1:3) (6:4)
(µH MAX)
0.8
(pF MAX)
PH9085.011NL PM2180.011NL
PH9085.012NL PM2180.012NL
PH9085.021NL PM2180.021NL
PH9085.034NL PM2180.034NL
PH9085.035NL PM2180.035NL
PH9085.038NL PM2180.038NL
PH9085.043NL PM2180.043NL
PH9085.083NL PM2180.083NL
PH9085.089NL PM2180.089NL
1020
1020
1160
1020
1020
1020
1160
1160
1160
30
40
20
40
40
40
30
15
0.60
0.85
0.60
0.60
0.80
0.85
0.60
0.60
0.60
0.65
1.60
0.35
0.75
1.20
2.00
0.50
0.30
0.70
22
22
1CT : 1CT
1CT : 2CT
2CT : 1CT
3CT : 4CT
3CT : 5CT
3CT : 8CT
4CT : 3CT
8CT : 3CT
8CT :9CT
0.6
1.6
23.6
22
0.6
0.6
22
2500
0.7
22
0.8
23.6
23.6
23.6
2.0
0.6
40
Notes:
1. The ET Max is calculated to limit the core loss and temperature rise at 100KHz based on a
bipolar flux swing of 210mT Peak.
swing
C. To calculate temperature rise, use the following formula: Temperature Rise (°C)
= 340 * (Core Loss(W) + Copper Loss (W))
4. The AEC-Q200 temperature and humidity operational life testing was completed using a
dielectric strength test of 2750Vdc.
5. Continuous isolation voltage confirmed by 125°C/1000hrs accelerated aging with the bias
voltage applied between primary and secondary windings.
6. The PM2180.XXXNL part numbers are AEC-Q200 and IATF16949 certified. The mechanical
dimensions are 100% tested in production but do not necessarily meet aproduct capability
index (Cpk) >1.33 and therefore may not strictly conform to PPAP.
2. For Push-Pull topology, where the voltage is applied across half the primary winding turns,
the ET needs to be derated by 50% for the same flux swing.
3. The applied ET may need to be further derated for higher frequencies based on the
temperature rise which results from the core and copper losses
A. To calculate total copper loss (W), use the following formula:
Copper Loss (W) = Irms_Primary2 * DCR_Primary + Irms_Secondary2*DCR_Secondary
B. To calculate total core loss (W), use the following formula:
Core Loss (W) = 7.70E-13 * (Frequency in kHz)2.43 * (210 * [ET/ET Max])2.5
Where ET is the applied Volt Second, ET Max is the rated Volt Second for 210mT flux
Mechanical
Schematic
PH9085.XXXNL and PM2185.XXXNL
Weight ...........................0.365grams
Tape & Reel ........................700/reel
Tray ......................................55/tray
Dimensions: mm
Unless otherwise specified,
all tolerances are±0.25
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