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TDA4865AJ 데이터시트(PDF) 11 Page - NXP Semiconductors |
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TDA4865AJ 데이터시트(HTML) 11 Page - NXP Semiconductors |
11 / 18 page TDA4865J_TDA4865AJ_2 © NXP B.V. 2006. All rights reserved. Product data sheet Rev. 02 — 3 November 2006 11 of 18 NXP Semiconductors TDA4865J; TDA4865AJ Vertical deflection booster [1] With a heat sink of 2 K/W. VP1,VN and VFB are referenced to ground of application; voltages are calculated with +10 % tolerances. The calculation formulae for supply voltages are as follows: (1) (2) where: U’L =Ldeflcoil × 2Idefl(max) × fv fv = vertical deflection frequency UD1 = forward voltage drop across D1 The calculation formulae for power consumption is: (3) (4) (5) where: PIC = power dissipation of the IC Ptot = total power dissipation Pdefl = power dissipation of the deflection coil Calculation formulae for maximum required thermal resistance for the heat sink at Tj(max) = 110 °C: (6) (7) Table 9. Calculated values Symbol Value Unit TDA4865J TDA4865AJ VP1 815 V VN −13 −15 V Ptot 8.5 12.1 W Pdefl 3.85 3.85 W PIC 4.65 8.25 W Rth(tot)(max) 12.9 7.27 K/W Tj(max)[1] 93 103.6 °C tflb 650 720 µs V P1 V osat () p – R1 R deflcoil + () I defl max () U' L U D1 + – × + = V N V osat ()n R1 R deflcoil + () I defl max () U' L + × + = P IC P tot P defl – = P tot V P1 U D1 – () I defl max () 4 ---------------------- V N I defl max () 4 ---------------------- V P1 V N + () 0.01 0.2 + × + × + × = P defl R deflcoil R1 + 3 --------------------------------- I defl max () 2 × = R th tot () R th j-mb () R th mb-h () R th h-a () ++ = R th h-a () T jmax () T amb – P IC ------------------------------------ R th j-mb () – R th mb-h () – = |
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