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TEA1713T Fiches technique(PDF) 5 Page - NXP Semiconductors |
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TEA1713T Fiches technique(HTML) 5 Page - NXP Semiconductors |
5 / 47 page TEA1713T All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved. Product data sheet Rev. 2 — 9 February 2011 5 of 47 NXP Semiconductors TEA1713T Resonant power supply control IC with PFC 7. Functional description 7.1 Overview of IC modules The functionality of the TEA1713 can be grouped as follows: • Supply module: Supply management for the IC; includes the restart and (latched) shut-down states • Protection and restart timer: Externally adjustable timer used for delayed protection and restart timing • Enable input: Control input for enabling and disabling the controllers; very low current consumption when disabled • PFC controller: Controls and protects the power factor converter; generates a 400 V (DC) boost voltage from the rectified AC mains input with a high power factor • HBC controller: Controls and protects the resonant converter; generates a regulated (mains isolated) output voltage from the 400 V (DC) boost voltage Figure 1 shows the block diagram of the TEA1713. A typical application is illustrated in Figure 19. HB 15 reference for high-side driver; input for half-bridge slope detection; externally connected to half-bridge node HB between HBC MOSFETs (see Figure 19) n.c. 16 not connected; high-voltage spacer SNSCURHBC 17 sense input for momentary HBC current; externally connected to resonant current sense resistor SGND 18 signal ground; reference (ground) for IC. CFMIN 19 minimum frequency setting for HBC; externally connected to capacitor RFMAX 20 maximum frequency setting for HBC; externally connected to resistor SNSFB 21 sense input for output voltage regulation feedback; externally connected to opto-coupler SSHBC/EN 22 combined soft start timing of HBC and IC enable input; enabling of PFC or PFC and HBC controllers; externally connected to soft start capacitor and enable pull-down signal RCPROT 23 protection timer setting for time-out and restart; externally connected to resistor and capacitor SNSBOOST 24 sense input for boost voltage; externally connected to resistive divided boost voltage Table 2. Pin description …continued Symbol Pin Description |
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