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TEA1755T 데이터시트(PDF) 3 Page - NXP Semiconductors |
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TEA1755T 데이터시트(HTML) 3 Page - NXP Semiconductors |
3 / 35 page TEA1755T All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved. Product data sheet Rev. 1 — 25 October 2012 3 of 35 NXP Semiconductors TEA1755T HV start-up DCM/QR flyback and DCM/QR PFC controllers 3. Applications The device can be used in all applications requiring an efficient and cost-effective power supply solution for up to 250 W. Notebook adapters in particular benefit from the high level of integration 4. Ordering information 5. Block diagram Table 1. Ordering information Type number Package Name Description Version TEA1755T/1 SO16 plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 Fig 1. TEA1755T block diagram TIMER 48 μs TIMER 4.2 μs PFC protection Vo OVP Vth(VOSENSE) ton REDUCTION NEAR OVP OCP PFC driver enable PFC start stop PFC 495 mV PFC gate VALLEY DETECT BLANK 3.32 V 2.5 V 1.92 V MAXIMUM external protection protection external protection Vstartup CHARGE CONTROL SAFE RESTART PROTECTION start flyback start stop PFC protection VCC good charge PFC protection protection latch reset enable PFC R S Q low power delay burst mode Vth(burst) PFC clamp SMPS CONTROL VCC good START SOFT start flyback enable flyback enable flyback BLANK Q R S FLYBACK OSCILLATOR ton(max) frequency reduction external protection time-out burst mode flyback driver flyback gate 12 13 PFC driver PFC gate VINSENSE PFCCOMP VOSENSE PFCSENSE PFCAUX OTP charge VALLEY DETECT OTP internal supply ZERO CURRENT SIGNAL ZERO CURRENT SIGNAL flyback gate FBAUX FBSENSE COUNTER OVP OVP flyback 3.5 V 7 6 11 8 9 HV VCC 16 1 GND 5 3 10 4 FBCTRL LATCH 90 mV PFCDRIVER FBDRIVER Vstartup Vth(UVLO) Vth(UVLO) aaa-002622 protection PFC(swon) PFC(swoff) CONTROL 30.5 μA 60 μA 29 μA 3.75 V clamp OCP frequency reduction burst mode 494 V Vth(burst) flyback driver 5.5 V 7.0 V TEMPERATURE -90 mV 8.1 μA dual boost dual boost dual boost low Vin power down ton max power down power down OPP OPP OPP MINIMUM 2 low power delay low power PFCTIMER 14 DELAY 60 μA 2.1 μA OVP flyback external protection OTP latch reset S S S R LATCHED PROTECTION PFC clamp clamp SOFT START SOFT STOP Ven(PFC)FBCTRL low power delay time-out R S S S Vth(VOSENSE) low Vin VUVLO driver driver PFC OSCILLATOR low power Ven(PFC)FBCTRL |
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