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Flyback Transformers for

Texas Instruments TPS23754

RoHS compliant
  • Developed for TI TPS23754 PoE Interface and DC/DC Converter
Buy Now:
Count Unit price
1 $5.19
175 $4.15
700 $3.62
1400 $3.15
2800 $2.64
5000 $2.46

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
Request a Sample:

Typical Application

Works with Texas Instruments TPS23754

Part number Input Voltage Output 1 Power Fsw
Sec Drive
JA4372-AL_ 33 V 57 V 3.3 V , 7.6 A 11.2 V , 0.02 A 25 W 250 kHz
JA4387-AL_ 33 V 57 V 12 V , 2.08 A 11.2 V , 0.02 A 25 W 250 kHz

Specifications

Electrical specifications at 25°C.

Part number 2 Inductance
at 0A (µH) 3
(Tolerance: ±10%)
Inductance
min at   2.2 A (µH) 4
DCR max (Ω) 5 Leakage
Inductance
max (µH) 6
Turns Ratio 7 Isolation
Voltage (Vrms) 8
Pri Sec Bias Drive Pri : Sec : Bias : Drive
JA4372-AL_ 75.0 67.5 0.143 0.005 0.122 0.072 3.0 1 : 0.08 : 0.28 : 0.16 1500
JA4387-AL_ 75.0 66.0 0.077 0.010 0.096 0.070 0.76 1 : 0.25 : 0.25 : 0.15 1500
Notes
  1. Output is with the secondary windings connected in parallel. Output of the drive winding is 6 V, 10 mA. Output of the bias winding is 11.2 V, 20 mA.
  2. When ordering, please specify a packaging code: JA4387-ALD.
  3. Inductance is measured at 250 kHz, 0.1 Vrms, 0 Adc. 
  4. Peak primary current drawn at minimum input voltage.
  5. DCR for the primary and the secondary is measured with windings connected in parallel.
  6. Leakage inductance is for the primary, measured with the windings connected in parallel and the secondary windings shorted.
  7. Turns ratio is with the primary windings and secondary windings connected in parallel.
  8. 1500 Vrms isolation from the primary and bias windings to the secondary.

Termination:

  • RoHS-compliant  260°C compatible. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations.
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +125°C
Storage temperature range:
Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Schematics

ja4372s.gif

Primary windings and secondary windings
to be connected in parallel on PC board.

Physical characteristics

ja4372d.gif


dims_inches_mm-(6).gif

Tape and Reel specification

tapereel_pl-(56).gif
 
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
13" (330 mm) A B C D E W P Po P1 H T part_or_c-(13).gif
175 330 100 13 50,4 44,4 44 28 4 2 12,0 0,4

General specification

Core Material:
Ferrite
Weight:
12.0 g
Packaging:
175 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick, 28 mm pocket spacing, 11.9 mm pocket depth

Soldering/Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested with pure water or alcohol only. For other solvents, see Doc787_PCB_Washing.pdf