R35,R71,R72,R73,
R74
26 12 R24,R25,R26,R27, 1.2K (SMT 0805)
R36,R38,R39,R40,
R80,R81,R82,R83
27 6 R3,R4,R54,R55, 50k Pot 3306P-503-ND Bourns 3306P
R59,R60
28 12 R5,R6,R13,R14, 9.1K,1% (SMT 0805)
R31,R37,R41,R52,
R61,R62,R69,R70
29 6 R1,R2,R29,R56, 6;2W P6.2W-2BK-ND (2W Thru-hole)
R57,R58
30 6 R11,R12,R45,R46 249K,1% (SMT 0805)
R67,R68
31 3 R28,R42,R84 8.2K,1% (SMT 0805)
32 6 R22,R23,R47,R48, 249 (SMT 0805)
R78,R79
33 6 R19,R20,R49,R53, 5K (SMT 0805)
R75,R76
34 3 R50,R77,R85 10 (SMT 0805)
35 3 U1,U2,U3 TA2022 Tripath Technology
36 2 3/8"STANDOFF 4801K-ND
37 2 STANDOFF NUT H616-ND
38 1 1/4" 4-40 H342-ND
39 6 NO. 4 FLAT H734-ND
40 6 3/8" 4-40 H781-ND
Note 1: Inductor selection is critical for optimal operation of the TA2022 as well as being an important
component in over current protection and EMI containment. Tripath recommends the customer use a
toroidal inductor for all applications with the TA2022. This board uses the American Cores T600-06
core(Micrometals T60-2)(15.2mm outer diameter) which was selected for multi-channel applications.
For higher power applications or high ambient conditions we recommend the Micrometals T68-2 core
or the American Cores (Amidon) T690-06. These cores have a high peak current capability due to its
low-µ Carbonyl-E metal powder. A distributed air gap increases its' energy storage capability, which
allows for a small footprint and high current capability. The T68-2 and T690-06 cores have a 17.5mm
outer diameter. Forty-four turns of 22AWG wire makes a complete single layer winding around the toroid
with six to eight layers overlapping yielding an ideal value of 11uH. This winding pattern, which covers
the core completely, aids in shielding the electric field. It should be noted that when multiple layers
are used there may be an increase in winding capacitance, which can cause ringing and increased radiated
emmisions. Winding techniques, such as bank winding, can minimize this effect. It is important that the
innitial windings not be crossed over by the last few windings. If a few windings more than
the single layer are required it is best to wind the core with a full single layer, back off a
number of turns,and rewind over the last few windings. A larger diameter Carbonyl-E core
may be used if a single layer wound core is required.
Please contact Tripath Applications if there are questions pertaining to this subject.
Substitution Notes:
1- ITEM#2- This component must be .1uF, 100V with X7R material characteristic and placed closely
to pins 4,8 and 9,10 of TA2022 with less than 1/8" lead length to the part.
2- ITEM#11- This component should be a high frequency,low ESR capacitor. We recommend .1 ohm,