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High Isolation Power Transformers
EP7 Platform SMD - PH9185.XXXNL and PM2190.XXXNL
Push Pull Transformer
Reinforced insulation for isolated power supply
driver
8mm creepage
5KVrms isolation (1000Vrms continuous)7
UL and TUV certied
Electrical Specifications @ 25°C - Operating Temperature -40°C to +125°C
Part Number Inductance (1-3)
(µH ±45%)
Leakage Inductance
(µH MAX)
DCR (1-3)
(Ω MAX)
DCR (4-6)
(Ω MAX)
ET MAX (1-3)1
(V-µsec MAX)
CAP
(pF MAX)
Turns Ratio
(1:3) (6:4)
Isolated Voltage4
(Vrms)Commercial Automotive8
PH9185.011NL PM2190.011NL 750 1.2 0.50 0.55 66 10.0 1CT : 1CT
5000
PH9185.012NL PM2190.012NL 450 0.9 0.40 0.80 52 10.0 1CT : 2CT
PH9185.013NL PM2190.013NL 200 0.6 0.35 0.95 36 8.0 1CT : 3CT
PH9185.021NL PM2190.021NL 1800 3.0 0.75 0.45 100 10.0 2CT : 1CT
PH9185.034NL PM2190.034NL 750 1.2 0.50 0.75 66 10.0 3CT : 4CT
PH9185.038NL PM2190.038NL 310 0.9 0.44 1.00 44 8.0 3CT : 8CT
PH9185.043NL PM2190.043NL 1260 1.5 0.70 0.56 89 12.0 4CT : 3CT
PH9185.083NL PM2190.083NL 2350 6.0 0.90 0.40 110 8.0 8CT : 3CT
PH9185.XXXNL/PM2190.XXXNL
Mechanical Schematic
Weight ...................2.6grams
Tape & Reel ...............150/reel
Tray .............................80/tray
Notes:
1. The ET Max is calculated to limit the core loss and temperature rise at 100KHz based on a
bipolar flux swing of 180mT Peak.
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) = 4.40E-10 * (Frequency in kHz)1.67 * (180 * [ET/ET Max])2.53
Where ET is the applied Volt Second, ET Max is the rated Volt Second for 180mT flux
swing
C. To calculate temperature rise, use the following formula: Temperature Rise (°C) =
90 * (Core Loss(W) + Copper Loss (W))
4. The AEC-Q200 temperature and humidity operational life testing was completed using a
dielectric strength test of 5000Vdc.
5. Optional Tape & Reel packing can be ordered by adding a “T” sux to the part number
(i.e. PH9185.012NL becomes PH9185.012NLT). Pulse complies to industry standard tape and
reel specification EIA481.
6. The “NL” sux indicates an RoHS-compliant part number.
7. Continuous isolation voltage confirmed by 125°C/1000hrs accelerated aging with the bias
voltage applied between primary and secondary windings.
8. The PM2190.XXXNL part numbers are AEC-Q200 and IATF16949 certified. The mechanical
dimensions are 100% tested in production but do not necessarily meet a product capabil-
ity index (Cpk) >1.33 and therefore may not strictly conform to PPAP.
Dimensions:
Unless otherwise specified,
all tolerances are ±
Inches
mm
.010
0,25
2power.pulseelectronics.com P708. N (10/19) http://www.power.pulseelectronics.com/contact
High Isolation Power Transformers
EP7 Platform SMD - PH9185.XXXNL and PM2190.XXXNL
Pulse Worldwide
Headquarters
15255 Innovation Drive Ste 100
San Diego, CA 92128
U.S.A.
Tel: 858 674 8100
Fax: 858 674 8262
Pulse Europe
Pulse Electronics GmbH
Am Rottland 12
58540 Meinerzhagen
Germany
Tel: 49 2354 777 100
Fax: 49 2354 777 168
Pulse China Headquarters
Pulse Electronics (ShenZhen) CO., LTD
D708, Shenzhen Academy of
Aerospace Technology,
The 10th Keji South Road,
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P.R. China 518057
Tel: 86 755 33966678
Fax: 86 755 33966700
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Shanghai 200336
China
Tel: 86 21 62787060
Fax: 86 2162786973
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3 Fraser Street
0428 DUO Tower
Singapore 189352
Tel: 65 6287 8998
Fax: 65 6280 0080
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1F., No.111 Xiyuan Rd
Zhongli City
Taoyuan City 32057
Taiwan (R.O.C)
Tel: 886 3 4356768
Fax: 886 3 4356820
For More Information
Performance warranty of products oered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product names mentioned herein may
be trademarks or registered trademarks of their respective owners. © Copyright, 2019. Pulse Electronics, Inc. All rights reserved.
PH9185.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 3W) from a low voltage source. A typical implementation would be an isolated RS-485/RS-232 power supply
driver circuit, the design is compatible with the MAXIM™ MAX253 IC.
A schematic diagram for the Push Pull converter topology is given below.
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 transformer design has been certified by UL to comply with UL60950-1 2nd edition, and CAN/CSA C22.2 NO. 60950-1-07 2nd edition; and by TUV to comply
with EN61558-1 and EN61558-2-16 with reinforced insulation for a working voltage up to 400Vac 8mm creepage and 5000Vrms isolation voltage is guaranteed
to meet this requirement. The design also complies with the Pulse’s class F insulation system. PH9185.013NL was not included in the original UL/TUV certification
but is complaint. Cost reduced versions without UL/TUV certification available, please contact Pulse Electronics for more information.
MAXIM is a registered trademark of Maxim Integrated Products.
V
V
PH9185/PM2190
D2
D1
GND
CC
OUT
V
IN
DRIVER
IC
TAPE & REEL INFO
SURFACE MOUNTING TYPE, REEL/TAPE LIST
PART NUMBER REEL SIZE (mm) TAPE SIZE (mm) QTY
A G P1W K0PCS/REEL
PH9185.XXXNLT/PM2190.XXXNLT Ø330 32.4 24 32 12.8 150
APPLICATION
P
W
K01
A
G
Direction of tape
Marking
Marking
