PH9384.012NLT - PULSE ELECTRONICS

1power.pulseelectronics.com P775. K (08/18) http://www.power.pulseelectronics.com/contact

High Isolation Power Transformers

Toroid Platform SMD

Push Pull Converter Transformer

4KVrms Isolation (550Vrms Continuous)

Reinforced insulation, 8.5mm Creepage

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)

PH9384.011NL 538 0.8 20 0.30 0.40 24 1CT : 1CT

4000

PH9384.012NL 538 0.6 30 0.33 0.65 24 1CT : 2CT

PH9384.021NL 538 1.6 15 0.30 0.25 24 2CT : 1CT

PH9384.034NL 680 0.6 30 0.35 0.52 27 3CT : 4CT

PH9384.035NL 680 0.7 30 0.35 0.65 27 3CT : 5CT

PH9384.038NL 538 0.7 30 0.40 0.90 27 3CT : 8CT

PH9384.043NL 538 0.8 20 0.30 0.30 24 4CT : 3CT

PH9384.083NL 538 2.0 15 0.30 0.22 24 8CT : 3CT

PH9384.089NL 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” sux to the part number

(i.e. PH9384.012NL becomes PH9384.012NLT). Pulse complies to industry standard tape

and reel speciﬁcation EIA481.

6. The “NL” sux indicates an RoHS-compliant part number.

Mechanical Schematic

Weight ...........................0.85grams

Tape & Reel ........................400/reel

Tray ......................................55/tray

Dimensions: mm

Unless otherwise speciﬁed,

all tolerances are ±0.25

SECONDARYPRIMARY

Notes:

PH9384.XXXNL

2power.pulseelectronics.com P775. K (08/18) http://www.power.pulseelectronics.com/contact

High Isolation Power Transformers

Toroid Platform SMD

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 oered 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

Application

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 actual isolation voltage (550Vrms) and creepage

(8.5mm) capability of the design exceeds these UL ratings.

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.

PH9384

GND

OUT

VIN

DRIVER