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Isolation Power Transformers
Toroid Platform SMD PH9384.XXXNL and PM2185.XXXNL
Push Pull Converter Transformer
4KVrms Isolation (550Vrms Continuous)
Sidecar Package
Patented: US Pat 9,646,755
Electrical Specifications @ 25°C - Operating Temperature -40°C to +125°C
Part Number Inductance
(1-3)
(μH ±35%)
Leakage Inductance
(1-3) with (4-6) shorted
(μH MAX)
Capacitance
(1, 2, 3) to (4, 5, 6)
(pF MAX)
DCR (1-3)
(Ω MAX)
DCR (4-6)
(Ω MAX)
MAX (1-3)1
(V-μsec Max)
Turns Ratio
(1:3) (6:4)
Isolated Voltage
(Vrms)
Commerical Automotive7
PH9384.011NL PM2185.011NL 538 0.8 20 0.30 0.40 24 1CT : 1CT
4000
PH9384.012NL PM2185.012NL 538 0.6 30 0.33 0.65 24 1CT : 2CT
PH9384.021NL PM2185.021NL 538 1.6 15 0.30 0.25 24 2CT : 1CT
PH9384.034NL PM2185.034NL 680 0.6 30 0.35 0.52 27 3CT : 4CT
PH9384.035NL PM2185.035NL 680 0.7 30 0.35 0.65 27 3CT : 5CT
PH9384.038NL PM2185.038NL 538 0.7 30 0.40 0.90 27 3CT : 8CT
PH9384.043NL PM2185.043NL 538 0.8 20 0.30 0.30 24 4CT : 3CT
PH9384.083NL PM2185.083NL 538 2.0 15 0.30 0.22 24 8CT : 3CT
PH9384.089NL PM2185.089NL 538 0.6 30 0.30 0.42 24 8CT :9CT
1. The ET Max is calculated to limit the core loss and temperature rise at 200KHz based on
a bipolar flux swing of 130mT 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) = 2.72E-12 * (Frequency in kHz)2.43*(130 * [ET/ET Max])2.5
Where ET is the applied Volt Second, ET Max is the rated Volt Second
for 130mT flux swing
C. To calculate temperature rise, use the following formula:
Temperature Rise (°C) = 154 * (Core Loss(W) + Copper Loss (W))
4. The AEC-Q200 temperature and humidity operational life testing was completed using
a dielectric strength test of 4000Vdc.
5. Optional Tape & Reel packing can be ordered by adding a “T” sux to the part number
(i.e. PH9384.012NL becomes PH9384.012NLT). Pulse complies to industry standard tape
and reel specification EIA481.
6. The “NL” sux indicates an RoHS-compliant part number.
7. The PM2185.XXXNL 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
PART NUMBER
Schematic
Weight ...........................0.85grams
Tape & Reel ........................400/reel
Tray ......................................55/tray
2
1
3
5
6
4
SECONDARYPRIMARY
Notes:
PH9384.XXXNL and PM2185.XXXNL
Dimensions: mm
Unless otherwise specified,
all tolerances are: ±0.25
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Isolation Power Transformers
Toroid Platform SMD PH9384.XXXNL and PM2185.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,
Nanshan District, Shenzhen,
P.R. China 518057
Tel: 86 755 33966678
Fax: 86 755 33966700
Pulse North China
Room 2704/2705
Super Ocean Finance Ctr.
2067 Yan An Road West
Shanghai 200336
China
Tel: 86 21 62787060
Fax: 86 2162786973
Pulse South Asia
3 Fraser Street
0428 DUO Tower
Singapore 189352
Tel: 65 6287 8998
Fax: 65 6280 0080
Pulse North Asia
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, 2020. Pulse Electronics, Inc. All rights reserved.
PH9384NL 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. PH9384.034NL has been certified by UL to comply with UL60950-1 2 edition with reinforced insulation for
a working voltage up to 300Vac. 7mm creepage and 3000Vrms isolation voltage is guaranteed to meet this requirement. The remainder of the PH9384.XXXNL
series was not included in the UL certification but are fully complaint with the requirements for reinforced insulation.
MAXIM is a registered trademark of Maxim Integrated Products.
V
V
PH9384/PM2185
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
PH9384.XXXNLT/PM2185.XXXNLT Ø330 24.4 16 24 8.2 400
APPLICATION
P
W
K01
A
G
Direction of tape
Marking
Marking
