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 @ 25°C - Operating Temperature -40°C to +125°C
Leakage Inductance Capacitance DCR (1-4) DCR (5-8)
(1-4) with (5-8) shorted (1, 4) to (5, 8) (Ω MAX)
Part Number
Commerical
Automotive8
Inductance
(1-4)
(μH ±35%)
ET (1-4)1
(V-μsec Max)
Turns Ratio
(1:4) (8:5)
Isolated
Voltage 2
(Vrms)
(Ω MAX)
(μH MAX)
(pF MAX)
PH9385.011NL PM2155.011NL
3200
6.0
36
1.10
1.00
109
1CT : 1CT
PH9385.045NL PM2155.045NL
PH9385.034NL PM2155.034NL
PH9385.012NL PM2155.012NL
PH9385.038NL PM2155.038NL
3200
2600
2600
2600
4.0
3.0
3.0
3.0
36
36
40
40
1.10
1.00
1.00
1.00
1.25
1.50
1.90
2.20
109
98
98
98
4CT : 5CT
3CT : 4CT
1CT : 2CT
3CT : 8CT
4000
PH9385.013NL PM2155.013NL
2600
3.0
40
1.00
2.75
98
1CT : 3CT
PH9385.027NL PM2155.027NL
PH9385.015NL PM2155.015NL
2600
1350
3.0
3.0
40
30
1.00
0.80
3.00
3.20
98
70
2CT : 7CT
1CT :5CT
Notes:
1. The ET Max is calculated to limit the core loss and temperature rise at 200KHz based on
a bipolar flux swing of 180mT Peak.
C. To calculate temperature rise, use the following formula:
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.
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 dielectric strength test of 4000Vdc.
5. Optional Tape & Reel packing can be ordered by adding a “T” suffix to the part number
(i.e. PH9385.011NL becomes PH9385.011NLT). Pulse complies to industry standard tape
and reel specification EIA481.
A. To calculate total copper loss (W), use the following formula:
Copper Loss (W) = Irms_Primary2 * DCR_Primary + Irms_Secondary2*DCR_Second- 6. The “NL” suffix indicates an RoHS-compliant part number.
ary.
7. Continuous isolation voltage confirmed by 125°C/1000hrs accelerated aging with the
B. To calculate total core loss (W), use the following formula:
Core Loss (W) = 3.93E-10 * (Frequency in kHz)1.7 * (180 * [ET/ET Max])2.17
Where ET is the applied Volt Second, ET Max is the rated Volt Second for 180mT flux
swing
bias voltage applied between primary and secondary windings.
8. The PM2155.XXXNLT part numbers are AEC-Q200 and IATF16949 certified. The mechani-
cal 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.
Mechanical
Schematic
PH9385.0XNLT and PM2155.0XXNLT
6X.148
[3.75]
1
8
8
7
6
5
.295 MAX
[7.5 MAX]
2
3
7
6
.600
[15.25]
.005[0.13]
8 SURFACES
.079
[2.00]
6X.148 .010
[3.75 0.25]
5
4
7
6
1
2
3
4
(.030)
[0.75]
.079
[2.00]
Weight .............................2.5/grams
Tray ......................................80/tray
.669 MAX
[17 MAX]
PH9385.0xxNL
DATE CODE ORIGIN
PAT. PEND.
.591 .012
[15.00 0.30]
Inches
mm
Dimensions:
Unless otherwise specified,
PIN 1 ID
.010
.630 MAX
[16 MAX]
all tolerances are
0,25
.006[0.15] MIN
power.pulseelectronics.com
http://www.power.pulseelectronics.com/contact
P766. K (05/19)
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