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LM5116MH Datasheet(PDF) 28 Page - Texas Instruments |
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LM5116MH Datasheet(HTML) 28 Page - Texas Instruments |
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28 / 37 page  ZZEA = 1 CCOMP x RCOMP ZO = 1 (CHF + CCOMP) x RFB2 ZHF = CHF x CCOMP x RCOMP (CHF + CCOMP) x GEA(S) = 1 + s s ZZEA 1 + s ZO ZHF KFB = RFB1 RFB1 + RFB2 x 1 -GEA(S) x = VCOMP 1 + + 1 AOL s ZBW VOUT(FB) 1 + GEA(S) KFB LM5116 SNVS499G – FEBRUARY 2007 – REVISED MARCH 2013 www.ti.com For VSL without RRAMP, use IOS = 25 µA For VSL with RRAMP to VCC, use IOS = 25 µA + VCC/RRAMP For VSL with RRAMP to -VCC, use IOS = 25 µA - VCC/RRAMP ERROR AMPLIFIER TRANSFER FUNCTION The following equations are used to calculate the error amplifier transfer function: (47) (48) (49) Where AOL = 10,000 (80 dB) and ωBW = 2π x fBW. GEA(S) is the ideal error amplifier gain, which is modified at DC and high frequency by the open loop gain of the amplifier and the feedback divider ratio. 28 Submit Documentation Feedback Copyright © 2007–2013, Texas Instruments Incorporated Product Folder Links: LM5116 |
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