EVALPFC1-TDA 4863-2 Infineon Technologies, EVALPFC1-TDA 4863-2 Datasheet - Page 7

• 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

2 Technical specifications
Input voltage
Input frequency
Output voltage and current
Output power
Efficiency
3 Circuit Description
3.1 Line Input
The AC line input side comprises the input fuse F1 as over-current
protection. The choke L1, X2-capacitors C1 and C2 and Y-capacitor CY1
and CY2 are used as radio interference suppressors. The high frequency
current ripple is filtered by L2 and C2.
Power Stage − Boost Type PFC Converter
After the bridge rectifier BR1, there is a boost type PFC converter
consisting of L3, Q1, D1 and C6. The third generation CoolMOS™
SPP08N50C3 is used as the power switch Q1. Due to its low Rdson, the
small heat sink can fulfill the dissipation requirement. Output capacitor C2
provides energy buffering to reduce the output voltage ripple (100Hz) to the
acceptable level.
3.2 Current Sense
The MOSFET current is sensed by the external shunt resistor R8 and R8A.
The sense voltage is fed into TDA4863-2 Pin 4 and compares to the
internal control voltage for PWM control.
3.3 PWM control of Boost Converter
The PWM control is realized by 8-Pin DCM PFC IC TDA4863-2. The output
voltage is sensed by voltage divider consisted of R6, R6A, R6B and R7.
The compensation network C10, C11, R9 constitutes the external circuitry
of the error amplifier. This circuitry allows the feedback to be matched to
various load conditions, thereby providing stable control. In order not to
make the response for 100Hz ripple, the loop compensation is
implemented with low bandwidth. The output voltage of the error amplifier
<Docnumber>
April 2004
controller TDA4863-2 and CoolMOS™ SPP08N50C3
160W PFC Evaluation Board with DCM PFC
85VAC~265VAC
50Hz, 60Hz
400VDC, 0.4A
160W
>85% at full load
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