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
Commerical
Automotive5
Inductance
(1-3)
(µH ±35%)
PH9085.011NL
PM2180.011NL
1020
0.8
30
0.60
0.65
22
1CT : 1CT
PH9085.012NL
PM2180.012NL
1020
0.6
40
0.85
1.60
22
1CT : 2CT
PH9085.021NL
PM2180.021NL
1160
1.6
20
0.60
0.35
23.6
2CT : 1CT
PH9085.034NL PM2180.034NL
1020
0.6
40
0.60
0.75
22
3CT : 4CT
PH9085.035NL
PM2180.035NL
1020
0.6
40
0.80
1.20
22
3CT : 5CT
PH9085.038NL
PM2180.038NL
1020
0.7
40
0.85
2.00
22
3CT : 8CT
PH9085.043NL PM2180.043NL
1160
0.8
30
0.60
0.50
23.6
4CT : 3CT
PH9085.083NL PM2180.083NL
1160
2.0
15
0.60
0.30
23.6
8CT : 3CT
Part Number
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)
ET MAX (1-3)1
(V-µsec Max)
Turns Ratio
(1:3) (6:4)
Isolated
Voltage
(Vrms)
2500
PH9085.089NL PM2180.089NL
1160
0.6
40
0.60
0.70
23.6
8CT :9CT
Notes:
1. The ET Max is calculated to limit the core loss and temperature rise at 420KHz based on
Core Loss (W) = 6.55E-12 * (Frequency in kHz)1.68 * (210 * [ET/ET Max])2.55
a bipolar flux swing of 210mT Peak.
Where ET is the applied Volt Second, ET Max is the rated Volt Second for 210mT flux
2. For Push-Pull topology, where the voltage is applied across half the primary winding
swing
turns, the ET needs to be derated by 50% for the same flux swing.
C. To calculate temperature rise, use the following formula: Temperature Rise (°C)
3. The applied ET may need to be further derated for higher frequencies based on the
= 140 * (Core Loss(W) + Copper Loss (W))
temperature rise which results from the core and copper losses
4. Continuous isolation voltage confirmed by 125°C/1000hrs accelerated aging with the
A. To calculate total copper loss (W), use the following formula:
bias voltage applied between primary and secondary windings..
Copper Loss (W) = Irms_Primary2 * DCR_Primary + Irms_Secondary2*DCR_Secondary
5. The PM2180.XXXNL part numbers are AEC-Q200 and IATF16949 certified. The mechanical
B. To calculate total core loss (W), use the following formula:
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
PH9085.XXXNL and PM2180.XXXNL
Weight ...........................0.365grams
Tape & Reel ........................700/reel
Tray ......................................55/tray
Dimensions: mm
Unless otherwise specified,
all tolerances are±0.25
1
PulseElectronics.com
P759.G (04/21)
Isolation Power Transformers
Toroid Platform SMD PH9085.XXXNL and PM2180.XXXNL
TAPE & REEL INFO
Marking
Marking
K0
A
W
P1
G
Direction of tape
SURFACE MOUNTING TYPE, REEL/TAPE LIST
REEL SIZE (mm)
PART NUMBER
PH9085.XXXNLT/PM2180.XXXNLT
TAPE SIZE (mm)
QTY
A
G
P1
W
K0
PCS/REEL
Ø330
16.4
12
16
6.6
700
APPLICATION
PH9085.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 2W) 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.
VIN
PH9085/PM2180
VCC
D1
V OUT
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.
MAXIM is a registered trademark of Maxim Integrated Products.
For More Information:
Americas - prodinfo_power@pulseelectronics.com | Europe - power-apps-europe@pulseelectronics.com | Asia - power-apps-asia@pulseelectronics.com
Performance warranty of products offered 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, 2021. Pulse Electronics, Inc. All rights reserved.
2
PulseElectronics.com
P759.G (04/21)
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