Isolation Power Transformers
Toroid Platform SMD
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
Part
Number
PH9385.011NL
PH9385.045NL
PH9385.034NL
PH9385.012NL
PH9385.038NL
PH9385.013NL
PH9385.027NL
PH9385.015NL
Inductance
(1-4)
(μH
±35%)
3200
3200
2600
2600
2600
2600
2600
1350
Leakage Inductance
(1-4) with
(5-8) shorted
(μH MAX)
6.0
4.0
3.0
3.0
3.0
3.0
3.0
3.0
Capacitance
(1, 4) to (5, 8)
(pF MAX)
36
36
36
40
40
40
40
30
DCR (1-4)
(Ω MAX)
1.10
1.10
1.00
1.00
1.00
1.00
1.00
0.80
DCR (5-8)
(Ω MAX)
1.00
1.25
1.50
1.90
2.20
2.75
3.00
3.20
MAX (1-4)
1
(V-μsec Max)
109
109
98
98
98
98
98
70
Turns Ratio
(1:4) (8:5)
1CT : 1CT
4CT : 5CT
3CT : 4CT
1CT : 2CT
3CT : 8CT
1CT : 3CT
2CT : 7CT
1CT :5CT
4000
Isolated Voltage
2
(Vrms)
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 top-
ology, where the voltage is applied across half the primary winding turns, the maximum
volts-use needs to be derated by 50%.
2. The AEC-Q200 temperature and humidity operational life testing was completed using a
dielectric strength test of 4000Vdc.
3. 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.
4. The “NL” suffix indicates an RoHS-compliant part number.
5. Continuous isolation voltage confirmed by 125°C/1000hrs accelerated aging
with the bias voltage applied between primary and secondary windings.
Mechanical
PH9385.0XXNL
.295 MAX
[7.5 MAX]
.005[0.13]
8 SURFACES
.079
[2.00]
6X.148±.010
[3.75±0.25]
(.030)
[0.75]
6X.148
[3.75]
Schematic
8
7
6
5
.600
[15.25]
1
8
2
3
7
6
7
6
1
2
3
.079
[2.00]
4
4
5
.669 MAX
[17 MAX]
PH9385.0xxNL
DATE CODE ORIGIN
Weight
.............................2.5/grams
Tape & Reel
........................300/reel
Tray
......................................80/tray
.591±.012
[15.00±0.30]
PAT. PEND.
Dimensions:
Inches
mm
Unless otherwise specified,
all tolerances are± .010
0,25
http://www.power.pulseelectronics.com/contact
PIN 1 ID
.630 MAX
[16 MAX]
.006[0.15] MIN
1
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P766.H (05/17)
Isolation Power Transformers
Toroid Platform SMD
Application
PH9385.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 2.5W) from a
low voltage source. A typical implementation would be an isolated RS-485 power supply driver circuit, the design
is compatible with the MAXIM™ MAX253 IC. Other IC’s include Texas SN6501 UCC2808, Analog ADuM4070,
ADuM447x.
A schematic diagram for the Push Pull converter topology is given below.
V
IN
V
CC
D1
PH9385
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. This range can be
extended by implementing different topologies such as forward or bridge and can be used with controllers offered
by different IC vendors for a number of different applications.
For More Information
Pulse Worldwide
Pulse Europe
Headquarters
Pulse Electronics GmbH
15255 Innovation Drive Ste 100 Am Rottland 12
San Diego, CA 92128
58540 Meinerzhagen
U.S.A.
Germany
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
135 Joo Seng Road
#03-02
PM Industrial Bldg.
Singapore 368363
Pulse North Asia
3F, No. 198
Zhongyuan Road
Zhongli City
Taoyuan County 32068
Taiwan
Tel: 886 3 4356768
Fax: 886 3 4356823
Tel: 858 674 8100
Fax: 858 674 8262
Tel: 49 2354 777 100
Fax: 49 2354 777 168
Tel: 65 6287 8998
Fax: 65 6280 0080
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, 2017. Pulse Electronics, Inc. All rights reserved.
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