Flyback Transformer for TI UCC2809 Primary Side Controller

SMT Flyback Transformer for
TI UCC2809 Primary Side Controller

Developed for Texas Instruments TI UCC2809 Primary Side Controller

Designed for 50 W dc-to-dc fixed frequency current mode switching power supplies

1500 Vrms isolation from primary to secondary windings

22 – 26 V input; 53 V, 1.0 A output

12 V, 20 mA bias winding output

RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations

SPECIFICATIONS

GA3136-BL	35.0	31.5	0.029 (pri) 0.074 (sec) 0.208 (bias)	0.230	1 : 1.40	1 : 0.33	5.9	53 V, 1.0 A

1	Inductance is for the primary, measured at 150 kHz, 1.0 Vrms.
2	Ipk: Peak primary current drawn at minimum input voltage.
3	DCR for the primary is measured with the windings connected in parallel.
4	Leakage inductance is for the primary windings connected in parallel and with the secondary winding shorted.
5	Turns ratios are for the primary windings connected in parallel.
6	Output is for the secondary winding. Bias winding output is 12 V, 20 mA.
7	Ambient temperature range:	–40°C to +125°C
8	Storage temperature range:	Component: –40°C to +125°C Packaging: –55°C to +80°C
9	Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
10	Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.

SMT Flyback Transformer for TI UCC2809 Primary Side Controller