Isolation Power Transformers - Product finder

Isolation Power Transformers
Toroid Platform SMD
Push Pull Converter Transformer
Compatible with MAXIM™ MAX253 to power RS-485/RS232
transceiver and other communication interfaces
2.5KVrms isolation
Compact and cost effective industrial design
4
Electrical Specifications @ 25°C - Operating Temperature -40°C to +125°C
Part 2, 3, 4
Number
Inductance
(1-3)
(µH ±35%)
Leakage Inductance
(1-3) with
Capacitance
(4-6) shorted (1, 2, 3) to (4, 5, 6)
(µH MAX)
(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)
PH9085.011NL
1020
0.8
30
0.60
0.65
11
1CT : 1CT
PH9085.012NL
1020
0.6
40
0.85
1.60
11
1CT : 2CT
PH9085.021NL
1160
1.6
20
0.60
0.35
11.8
2CT : 1CT
PH9085.034NL
1020
0.6
40
0.60
0.75
11
3CT : 4CT
PH9085.035NL
1020
0.6
40
0.80
1.20
11
3CT : 5CT
PH9085.038NL
1020
0.7
40
0.85
2.00
11
3CT : 8CT
PH9085.043NL
1160
0.8
30
0.60
0.50
11.8
4CT : 3CT
PH9085.083NL
1160
2.0
15
0.60
0.30
11.8
8CT : 3CT
PH9085.089NL
1160
0.6
40
0.60
0.70
11.8
8CT :9CT
Notes:
1. The maximum volt-usec rating limits the peak flux density to 3600 gauss when used in
bi-polar drive application with 200KHz. For unipolar drive applications or a bi-polar drive
with 350kHz, a maximum volt-usec could be 60% of the listed value. For Push-Pull topology, where the voltage is applied across half the primary winding turns, the maximum
volts-use needs to be derated by 50%.
Schematic
8.10 MAX
5
6
PULSE
PH9085.XXXNL
DATE CODE CoO
7.10 MAX
4
2500
2. Optional Tape & Reel packing can be ordered by adding a “T” suffix to the part
number (i.e. PH9085.012NL becomes PH9085.012NLT). Pulse complies to industry
standard tape and reel specification EIA481.
3. The “NL” suffix indicates an RoHS-compliant part number.
Mechanical
PH9085.XXXXNL
Isolated Voltage
(Vrms)
1.80
1
6
2
5
3
4
3
2
5.08
2.54
1
6.4
Weight ...........................0.365grams
Tape & Reel ........................700/reel
Tray ......................................55/tray
12
5.08 MAX
d
(8.30)
0.10
6 SURFACES
0.50 ±0.10
9.50 MAX
USA 858 674 8100
Germany 49 7032 7806 0
1
Singapore 65 6287 8998
pulseelectronics.com
Dimensions: Inches
mm
Unless otherwise specified,
all tolerances are ± .010
0,25
Shanghai 86 21 62787060
China 86 755 33966678
Taiwan 886 3 4356768
P759.B (08/15)
Isolation Power Transformers
Toroid Platform SMD
Application
PH9085NL 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.
VIN
PH9085
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
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Shanghai 200336
Tel: 886 3 4356768
Shenzen, PR China
China
Tel: 65 6287 8998
Fax: 886 3 4356823 (Pulse)
Tel: 858 674 8100
Tel: 49 7032 78060
518057
Fax: 65 6287 8998
Fax: 886 3 4356820 (FRE)
Fax: 858 674 8262
Fax: 49 7032 7806 135
Tel: 86 755 33966678
Tel: 86 21 62787060
Fax: 86 755 33966700
Fax: 86 2162786973
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, 2015. Pulse Electronics, Inc. All rights reserved.
2
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