EVALPFC1-TDA 4863-2 Infineon Technologies, EVALPFC1-TDA 4863-2 Datasheet - Page 8

• 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
is sent to the internal multiplier and multiplied with sine wave sensing
signal. The multiplier output is used as internal control voltage for peak
current mode PWM control. The gate is turned off when peak current
sensing signal exceeds the control voltage.
The zero current detector senses the inductor current via an auxiliary
winding and ensures that the next on-time of the MOSFET is initiated
immediately when the inductor current has reached zero. This reduces the
reverse recovery losses of the boost converter diode to a minimum. The IC
supply is provided by the auxiliary winding as well and filtered and buffered
by C8 and C9. Resistor R3 is used to limit the IC supply current. The
popular charge pump circuit of D3, R2 and C7 is implemented for the IC
supply in wide range input voltage. ZD1 is used to limit the IC supply
voltage within the operating range.
3.4 Gate Drive Output
The IC output gate driver is a fast totem pole gate drive and specially
designed to drive large MOS transistor. The gate drive resistor R5 is
selected to limit and gate pulse current and drive MOSFET for fast
switching.
4 Circuit Operation
4.1 Start up
From the rectified bulk capacitor DC voltage, the chip's starting current
supply is derived using the resistors R4 and R4A. Because of the low
current less than 100uA, high-value resistors can be used. Series
connection of the resistors is necessary for reasons of insufficient dielectric
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April 2004