EVALPFC1-TDA 4863-2 Infineon Technologies, EVALPFC1-TDA 4863-2 Datasheet - Page 9

• Manufacturer Part Number: EVALPFC1-TDA 4863-2
• Description: BOARD DEMO 160W DCM-PFC SMPS
• Manufacturer: Infineon Technologies
• Series: CoolMOS™r

Specifications of EVALPFC1-TDA 4863-2

• Main Purpose: Power Management, Power Factor Correction
• Embedded: No
• Utilized Ic / Part: TDA4863-2
• Primary Attributes: 160 W, 400 V & 400 mA Out, 85~265 VAC In
• Secondary Attributes: Totem Pole Output with Active Shutdown
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: EVALPFC1-TDA4863-2IN

160W PFC Evaluation Board with DCM PFC
controller TDA4863-2 and CoolMOS™ SPP08N50C3
strength of the individual resistors. The IC remains inactive during the Vcc
charge up. When Vcc pin is higher than turn-on threshold, typical 12.5V,
PFC is going to start. During the startup, the peak current limit is activated
and maximum power is delivered to the output for fast startup.
4.2 Protection Features
4.2.1 Output over-voltage protection
Because of the inherent low bandwidth of PFC circuit, fast changes of the
output voltage can’t be regulated within an adequate time. Fast output
changes occur during initial start-up, sudden load removal, or output arcing.
The unique output over-voltage protection is integrated by sensing the
current flowing into the IC Pin 2 VAOUT. If this current exceeds an internal
defined margin, typical 40uA, over-voltage regulator circuitry is activated
and reduces the multiplier output voltage. As a result the on time of the
MOSFET is reduced. The OVP protection threshold is obtained as below:
+
R
R
µ
=
⋅
+
⋅
L
H
V
40
A
R
2
5 .
V
OVP
H
R
L
4.2.2 IC supply under voltage lock out
When VCC voltage is below the under voltage lockout threshold Vccoff,
typical 10V, IC is off the gate drive is internally pull low to maintain the off
state. Vcc is charged up for auto-restart.
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9
April 2004