EVL6563H-100W STMicroelectronics, EVL6563H-100W Datasheet - Page 35

• Manufacturer Part Number: EVL6563H-100W
• Description: EVAL BOARD FOR L6563 (100W)
• Manufacturer: STMicroelectronics
• Type: Power Factor Correctionr

Specifications of EVL6563H-100W

• Main Purpose: Power Management, Power Factor Correction
• Embedded: No
• Utilized Ic / Part: L6563
• Primary Attributes: 100W Power Factor Correction and Preregulator Combination
• Secondary Attributes: Transition Mode & Active Tracking Boost Function.
• Product: Power Management Modules
• Supply Current: 5 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: L6563H
• Other names: 497-10379; 497-10379-NHD

L6563H
6.8
In table 1 it is possible to find a summary of all of the above mentioned working conditions
that cause the device to stop operating.
Figure 50. Brownout protection (master PFC)
High-voltage start-up generator
Figure 51
generator). It is made up of a high-voltage N-channel FET, whose gate is biased by a 15 MΩ
resistor, with a temperature-compensated current generator connected to its source.
Figure 51. High-voltage start-up generator: internal schematic
The HV generator is physically located on a separate chip, made with BCD off-line
technology able to withstand 700 V, controlled by a low-voltage chip, where all of the control
functions reside.
With reference to the timing diagram of
converter the voltage on the bulk capacitor (Vin) builds up and, at about 80 V, the HV
generator is enabled to operate (HV_EN is pulled high) so that it draws about 1 mA. This
current, minus the device's consumption, charges the bypass capacitor connected from pin
Vcc (16) to ground and makes its voltage rise almost linearly.
shows the internal schematic of the high-voltage start-up generator (HV
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Doc ID 16047 Rev 3
L6563H
L6563H
Figure 52
, when power is first applied to the
Application information
L6563H
L6563H
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