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RA7040-AL Forward Mode

Planar Transformer for TI UCC2897 (PMP9720)

RoHS-konform
  • Developed for TI UCC2897 Current Mode Active Clamp PWM Controller (PMP9720 reference design)
  • Designed for forward topology operating at 200 kHz with an input range of 48 – 60 V.
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Typische Anwendung

Funktioniert mit Texas Instruments UCC2897

Eingangsspannung Ausgang 1 Leistung
48 V 60 V 12 V , 13 A 150 W

Technische Daten

Electrical specifications at 25°C.

Teilenummer Induktivität
bei 0A (µH) 2
(Toleranz: ±20%)
DCR max (mΩ) 3 Streu-
induktivitätmax (µH) 4
Windungsverhältnis Volt-Zeit-
Produkt (V-µs) 5
Isolations-
spannung (Vrms) 6
Pri Sec Aux Pri : Sec : Aux
RA7040-AL 50 10,75 4,25 61,10 0,55 1 : 0.5 : 0.5 100 1500
Hinweise
  1. Output is of the secondary winding frmo pins 11 – 8. Output of the aux winding is 12 V.
  2. Inductance is for the primary, measured on Agilent/HP 4284A at 200 kHz, 0.5 Vrms, 0 Adc with primary windings connected in parallel.
  3. DCR for the primary is measured with the windings connected in parallel. DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  4. Leakage Inductance is for the primary, measured at 200 kHz, 0.5 Vrms, 0 Adc with primary windings connected in parallel and all secondary pins shorted.
  5. Volt-time product is based on primary windings connected in parallel.
  6. 1500 Vrms, one minute isolation hipot) from primary to secondary.

Anschlüsse:

  • RoHS-compliant  260°C compatible. Matte tin over nickel over brass.
Umwelt/Umgebung
Umwelt/Umgebung:
RoHS-konform
Umgebungstemperaturbereich:
–40°C to +125°C
Lagertemperaturbereich:
Component: –40°C to +125°C
Tray packaging: –40°C to +80°C
Maximale Bauteiltemperatur:
+165°C (ambient + temp rise)
Ausfälle pro Zeiteinheit (FIT) / Mittlere Ausfallzeit (MTBF):
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Pläne/Diagramme

ra7040s.gif

Primary windings to be connected in parallel on the PC board.

Physikalische Eigenschaften

ra7040d.gif

dims_inches_mm.gif

Allgemeine Spezifikation

Kernmaterial:
Ferrite
Gewicht:
12.7 g
Verpackung:
36 per tray

Löten/Reinigen

Feuchteempfindlichkeitsstufe (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Löttemperaturbeständigkeit:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
Vor dem Löten bitte den Beitrag Löten von Coilcraft-Bauelementen lesen.
Baugruppenreinigung:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info

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