Document 245 Flyback Transformers
These transformers have been specially developed for
use in flyback power supplies with the ON Semiconductor NCP1200 PWM Current-Mode Controller. They are
designed for universal input, 85 – 265 Vac. For ON Semiconductor
NCP1200 Controller Coilcraft can also custom engineer a transformer to meet
your specific requirements. For free evaluation samples,
contact Coilcraft or visit www.coilcraft.com. Leakage Part Inductance1 DCR inductance2 Isolation3 Turns ratio Weight Application number ±10% (mH) max (Ohms) max (µH) (Vrms) pri : sec pri : aux Output (g) 3.5 W Y8844-AL 2.9 4.25 (8-5) 80 1500 1 : 0.08 — 6.5 V, 0.54 A 6.7 0.07 (4-1) 10 W Y8848-AL 1.8 1.77 (10-6) 60 2000 1 : 0.1 — 12 V, 0.83 A 16 0.038 (5-1)
70 W Z9007-BL 0.7 0.261 (12-7) 16 1500 1 : 0.164 — 16 V, 4.2 A 52 0.013 (6-1) 0.013 (4-3)
70 W Z9260-AL 0.7 0.261 (12-7) 26 2000 1 : 0.164 1
: 0.15 16 V, 4.2 A(sec) 54 with Auxilary winding 0.013 (6-1) 15 V, 0.2 A (aux) 0.013 (4-3) 0.045 (11-8)
1. Inductance is for the primary, measured at 10 kHz, 0.1 Vrms, 0 Adc
2. Leakage inductance tested at 100 kHz, 0.1 Vrms
3. Isolation tested between primary and secondary on all parts and between primary and auxiliary on Z9260-AL. Y8844-AL 4. Primary to secondary turns ratio specified with secondary windings connected in parallel.
5. Operating temperature range -40°C to +85°C.
6. Electrical specifications at 25°C. Y8848-AL Z9007-BL, Z9260-AL B B A
C C For Z9007-BL and
Z9260-AL, secondary
windings to be connected in parallel on
the circuit board. B
D
4 D 5 1 8 Packaged
49 per tray
8 Pri …
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