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TEA1713T Datasheet(PDF) 11 Page - NXP Semiconductors |
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TEA1713T Datasheet(HTML) 11 Page - NXP Semiconductors |
11 / 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 11 of 47 NXP Semiconductors TEA1713T Resonant power supply control IC with PFC 7.5 IC protection 7.5.1 IC restart and shut-down In addition to the protection functions that influence the operation of the PFC and HBC controllers, a number of protection functions are provided that disable both controllers. See the protection overview in Section 7.9 for details on which protections trigger a restart or a protection shut-down. • Restart When the TEA1713 enters the Restart state, the PFC and HBC controllers are switched off. After a period defined by the Restart timer, the IC automatically restarts following the normal start-up cycle. • Protection shut-down When the TEA1713 enters the Protection shut-down state, the PFC and HBC controllers are switched off. The Protection shut-down state is latched, so the IC will not start up again automatically. It can be restarted by resetting the Protection shut-down state in one of the following ways: – by lowering VSUPIC and VSUPHV below their respective reset levels, Vrst(SUPIC) and Vrst(SUPHV) – via a fast shut-down reset (see Section 7.5.3). – via the enable pin (see Section 7.4) • Thermal hold In the Thermal hold state, the PFC and HBC controllers are switched off. The Thermal hold state remains active until the IC junction temperature drops to about 10 °C below Totp (see Section 7.5.6). Fig 4. Circuit configuration around pin SSHBC/EN Ven(PFC)(EN) Ven(IC)(EN) SSHBC/EN Enable supply signal (0 to > 2 V) Disable supply Css(HBC) To soft start circuit lpu(EN) Vpu(EN) Enable detection EnableIc EnableIcPfc 014aaa852 TEA1713 |
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