RA6992_16 Datasheet, PDF (1/1 Pages) Coilcraft lnc. – SMT Planar Transformer

Document 1268
For TI UCC2897
SMT Planar Transformer (PMP9656
Reference Design)
• Developed for Texas Instruments UCC2897 Active Clamp
Forward (PMP9656 reference design)
• Rated for 250 Watts
• Designed to operate at 200 kHz with 48 – 60 Vdc input.
• High efficiency; excellent DCR; very low leakage inductance;
1500 Vrms, one minute primary to secondary isolation.
• Provides 0.009″ (0.229 mm) clearance above the seating plane
Core material Ferrite
Terminations  Matte tin over nickel over brass.
Weight  26.5 g
Ambient temperature  –40°C to +85°C
Maximum part temperature  +125°C (ambient + temp rise)
Storage temperature  Component: –40°C to +125°C.
Tray packaging: –40°C to +80°C
Resistance to soldering heat  Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL)  1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging  25 per tray
PCB washing  Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
_Turns
Part number Pri Sec Aux
RA6992-BL
84 4
Primary
  _inductance1
±20% (µH)
50
  _{inLdeuacktaagnec e}2   DCR max (mOhms)³
max (µH) Primary Secondary^  Aux
0.25
6.9
4.2
82
Volt-time
  _{product typ}4
(Vµsec)
206
Output
12 V, 21 A
1. Inductance measured on an Agilent/HP 4284 at 200 kHz, 0.5 Vrms, 0 Adc with windings connected in parallel.
2. Leakage inductance is for the primary with windings connected in parallel, measured at 200 kHz, 0.5 Vrms, 0 Adc with all secondary pins shorted.
3. DCR for primary is measured with the windings connected in parallel. DCR for secondary is measured between pins 7 and 11.
4. Volt-time product is based on primary windings connected in parallel.
5. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Dot indicates pin 1
Internal code
1
2
1.050
26,67
max
3
4
5
6
0.009
0,229
min
1.160
29,46
max
0.080 0.10
2,03
2,54
Dimensions
are
in
inches
mm
11
1
11
10
0.313
7,95
9
2
10
3
9
4
8
0.1878 0.0626 ₅
8
7
4,77 1,59
6
7
0.110
2,79
Æ
1.00
25,40
Recommended
Land Pattern
0.475
12,10
max
0.004 /0,102
0.150
3,81
0.130
3,30
Æ
2
3
Pri 8T
5
4
1
Aux 4T
6
11
1T
10
1T
9 Sec
1T
8
1T
7
Primary windings to be connected
in parallel on the PC board
US [e-mail] ^notice.
UK +44-1^P23^le6^a-^s7^e30^c5^h9^e5^ck s^oa^ul^re^ws@^ebc^soⁱi^tl^ecr^fa^of^rt-^le^au^tero^sp^t eⁱⁿ.^fc^oo^rm^mation.
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Document 1268  Revised 11/16/15
© Coilcraft Inc. 2016
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.