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SSL4120 датащи(PDF) 47 Page - NXP Semiconductors |
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SSL4120 датащи(HTML) 47 Page - NXP Semiconductors |
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47 / 48 page ![]() SSL4120 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved. Product data sheet Rev. 2 — 1 November 2012 47 of 48 continued >> NXP Semiconductors SSL4120 Resonant power supply controller IC with PFC for LED lighting 17. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features and benefits . . . . . . . . . . . . . . . . . . . . 2 2.1 General features . . . . . . . . . . . . . . . . . . . . . . . . 2 2.2 PFC controller features. . . . . . . . . . . . . . . . . . . 2 2.3 HBC controller features . . . . . . . . . . . . . . . . . . 2 2.4 Protection features . . . . . . . . . . . . . . . . . . . . . . 2 3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 Ordering information . . . . . . . . . . . . . . . . . . . . . 3 5 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6 Pinning information . . . . . . . . . . . . . . . . . . . . . . 4 6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 7 Functional description . . . . . . . . . . . . . . . . . . . 6 7.1 Overview of IC modules . . . . . . . . . . . . . . . . . . 6 7.2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7.2.1 Low-voltage supply input (SUPIC pin) . . . . . . . 7 7.2.2 Regulated supply (SUPREG pin) . . . . . . . . . . . 8 7.2.3 High-side driver floating supply (SUPHS pin) . . 9 7.2.4 High-voltage supply input (SUPHV pin) . . . . . . 9 7.3 Flow diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.4 Enable input (SSHBC/EN pin) . . . . . . . . . . . . 11 7.5 IC protection . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7.5.1 IC restart and shut-down . . . . . . . . . . . . . . . . 12 7.5.2 Protection and restart timer . . . . . . . . . . . . . . 13 7.5.2.1 Protection timer . . . . . . . . . . . . . . . . . . . . . . . 13 7.5.2.2 Restart timer . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7.5.3 Fast shut-down reset (SNSMAINS pin) . . . . . 14 7.5.4 Output overvoltage protection (SNSOUT pin) 14 7.5.5 Output undervoltage protection (SNSOUT pin) 15 7.5.6 OverTemperature Protection (OTP) . . . . . . . . 15 7.6 Burst mode operation (SNSOUT pin) . . . . . . . 15 7.7 PFC controller. . . . . . . . . . . . . . . . . . . . . . . . . 16 7.7.1 PFC gate driver (GATEPFC pin). . . . . . . . . . . 16 7.7.2 PFC on-time control . . . . . . . . . . . . . . . . . . . . 16 7.7.2.1 PFC error amplifier (COMPPFC and SNSBOOST pins) . . . . . . . . . . . . . . . . . . . . . . 16 7.7.2.2 PFC mains compensation (SNSMAINS pin). . 16 7.7.3 PFC demagnetization sensing (SNSAUXPFC pin) . . . . . . . . . . . . . . . . . . . . . 17 7.7.4 PFC valley sensing (SNSAUXPFC pin) . . . . . 17 7.7.5 PFC frequency and off-time limiting . . . . . . . . 18 7.7.6 PFC soft-start and soft-stop (SNSCURPFC pin) . . . . . . . . . . . . . . . . . . . . . 19 7.7.7 PFC overcurrent regulation, OCR-PFC (SNSCURPFC pin) . . . . . . . . . . . . . . . . . . . . . 19 7.7.8 PFC mains undervoltage protection/brownout protection, UVP mains (SNSMAINS pin) . . . . 19 7.7.9 PFC boost overvoltage protection, OVP boost (SNSBOOST pin) . . . . . . . . . . . . . . . . . 20 7.7.10 PFC short circuit/open-loop protection, SCP/OLP-PFC (SNSBOOST pin) . . . . . . . . . 20 7.8 HBC controller . . . . . . . . . . . . . . . . . . . . . . . . 20 7.8.1 HBC high-side and low-side driver (GATEHS and GATELS pins). . . . . . . . . . . . . 20 7.8.2 HBC boost undervoltage protection, UVP boost (SNSBOOST pin) . . . . . . . . . . . . . . . . . 20 7.8.3 HBC switch control. . . . . . . . . . . . . . . . . . . . . 21 7.8.4 HBC Adaptive Non-Overlap (ANO) time function (HB pin) . . . . . . . . . . . . . . . . . . . . . . 21 7.8.4.1 Inductive mode (normal operation) . . . . . . . . 21 7.8.4.2 Capacitive mode . . . . . . . . . . . . . . . . . . . . . . 22 7.8.5 HBC slope controlled oscillator (CFMIN and RFMAX pins) . . . . . . . . . . . . . . . . . . . . . . . . . 23 7.8.6 HBC feedback input (SNSFB pin) . . . . . . . . . 25 7.8.7 HBC open-loop protection, OLP-HBC (SNSFB pin). . . . . . . . . . . . . . . . . . . . . . . . . . 26 7.8.8 HBC soft start (SSHBC/EN pin) . . . . . . . . . . . 26 7.8.8.1 Soft-start voltage levels . . . . . . . . . . . . . . . . . 27 7.8.8.2 Soft-start charge and discharge . . . . . . . . . . . 27 7.8.8.3 Soft-start reset . . . . . . . . . . . . . . . . . . . . . . . . 28 7.8.9 HBC high-frequency protection, HFP-HBC (RFMAX pin) . . . . . . . . . . . . . . . . . . . . . . . . . 29 7.8.10 HBC overcurrent regulation and protection, OCR and OCP (SNSCURHBC pin) . . . . . . . . 29 7.8.10.1 Boost voltage compensation . . . . . . . . . . . . . 29 7.8.10.2 Overcurrent regulation, OCR-HBC . . . . . . . . 30 7.8.10.3 Overcurrent protection, OCP-HBC. . . . . . . . . 31 7.8.11 HBC capacitive mode regulation, CMR (HB pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 7.9 Protection functions overview . . . . . . . . . . . . 32 8 Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 33 9 Thermal characteristics . . . . . . . . . . . . . . . . . 34 10 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 34 11 Application information . . . . . . . . . . . . . . . . . 41 12 Package outline. . . . . . . . . . . . . . . . . . . . . . . . 42 13 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 43 14 Revision history . . . . . . . . . . . . . . . . . . . . . . . 44 15 Legal information . . . . . . . . . . . . . . . . . . . . . . 45 15.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 45 15.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 15.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 45 15.4 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 46 16 Contact information . . . . . . . . . . . . . . . . . . . . 46 |
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