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SSL4120 датащи(PDF) 12 Page - NXP Semiconductors

номер детали SSL4120
подробное описание детали  Resonant power supply controller IC with PFC for LED lighting
PDF  48 Pages
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производитель  NXP [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo NXP - NXP Semiconductors

SSL4120 датащи(HTML) 12 Page - NXP Semiconductors

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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
12 of 48
NXP Semiconductors
SSL4120
Resonant power supply controller IC with PFC for LED lighting
7.5 IC protection
7.5.1 IC restart and shut-down
In addition to the protection functions influencing the PFC and HBC controller operation,
several protection functions are provided to disable both controllers. See the protection
overview in Section 7.9 for details on which protection functions trigger a restart or
protection shut-down.
• Restart
When the SSL4120 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 SSL4120 enters the Protection shut-down state, the PFC and HBC
controllers are switched off. The Protection shut-down state is latched, the IC does
not automatically start up again. It can be restarted by resetting the Protection
shut-down state in one of the following ways:
– lower VSUPIC and VSUPHV below their respective reset levels, Vrst(SUPIC) and
Vrst(SUPHV)
– using a fast shut-down reset (see Section 7.5.3).
– using 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 approximately
10
C below T
otp (see Section 7.5.6).
Fig 4.
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