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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > PFC (Power Factor Correction)

Infineon Technologies TDA4863-2

Name: TDA4863-2
Brand: Infineon Technologies
SKU: TDA4863-2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA4863-2

Manufacturer:: Infineon Technologies

Category:: PFC (Power Factor Correction)

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: TDA4863-2.pdf

Description:: IC PFC CTRLR DCM 8DIP

Quantity:: RFQ Add To RFQ list

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Inventory:2,644

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Product details

Overview

TDA4863-2 from Infineon Technologies is a continuous-conduction-mode (CCM) boost-type Power Factor Correction (PFC) controller IC designed for universal-input AC/DC front-end stages. It delivers near-unity power factor (>0.99), achieves <5% THD at full load and low-load conditions, supports 85–265 V_AC input, features zero-current detection for discontinuous mode support, and drives MOSFETs up to 20 A in high-efficiency PFC pre-regulators for industrial SMPS.

For engineers reviewing the TDA4863-2 datasheet, TDA4863-2 pinout, TDA4863-2 application, or TDA4863-2 equivalent, key selection criteria include its integrated zero-current detector, 2.2 V VAOUT inhibit threshold, 0.85 V gate-driver low-state voltage, 12.5 V overvoltage regulation, and RoHS-compliant PG-DIP-8-4 package suitability for high-reliability offline PFC designs.

Technical Context

The TDA4863-2 implements a voltage-mode-controlled CCM boost topology with internal error amplifier, analog multiplier, leading-edge blanking (LEB), and RS flip-flop-based PWM generation. Its voltage amplifier integrates via external capacitor on VAOUT and clamps output at 5 V to prevent overshoot.

Functional blocks include a dedicated zero-current detector (DETIN), overvoltage regulator (OVR) with 12.5 V threshold, undervoltage lockout (UVLO) with 10 V turn-on/8.5 V turn-off, and totem-pole GTDRV output capable of sinking 20 A peak current-enabling direct drive of high-current MOSFETs without external buffers.

Key Specifications

Parameter	Value and Actual Design Meaning
Topology	CCM boost PFC controller with zero-current detection for mixed-mode operation
Input Voltage Range	85–265 V_AC universal line input, supported by UVLO and OVR protection
THD Performance	<5% at 110 W output; optimized for low-load THD via improved MULTIN sensitivity
VSENSE Range	0–5 V input range; connects to output voltage divider for precise DC bus regulation
GTDRV Output	Totem-pole driver with 0.85 V low-state voltage and 20 A peak sink capability
OVR Threshold	12.5 V clamp on VAOUT; prevents overvoltage damage to boost MOSFET and output capacitor
Startup Current	<100 µA typical; enables low-power auxiliary supply design with minimal standby loss

Pinout & Package

Package: PG-DIP-8-4 (8-pin plastic dual in-line package, 0.3 inch width, lead-free, RoHS compliant).

Pin/Terminal	Circuit Role	Design Meaning
1 VSENSE	Inverting input of voltage error amplifier	Connects to DC bus voltage divider; sets regulated output voltage (e.g., 385 V)
2 VAOUT	Voltage amplifier output / multiplier input	Integrator node clamped at 5 V; inhibits GTDRV if <2.2 V
3 MULTIN	Multiplier second input	Accepts rectified AC line signal; shapes sinusoidal reference for current loop
4 ISENSE	Current sense comparator input	Monitors MOSFET source current via sense resistor; includes LEB for noise immunity
5 DETIN	Zero-current detector input	Connected to auxiliary winding; enables DCM operation and soft-switching control
6 GND	Analog/digital ground reference	Common return for all internal circuits; requires low-impedance PCB layout
7 GTDRV	Gate driver output	Directly drives N-channel MOSFET gate; active shutdown pulls low during disable
8 VCC	Positive supply input	UVLO thresholds: 10 V (on), 8.5 V (off); requires 100 nF ceramic + bulk electrolytic

Key Features

Feature	Design Value
Sinusoidal line-current shaping	Enables >0.99 power factor and <5% THD without external harmonic filters
Integrated zero-current detection	Supports transition between CCM and DCM for efficiency optimization across load range
Active gate-driver shutdown	GTDRV forced low during UVLO or fault, preventing unintended MOSFET conduction
Low-startup-current design	Reduces auxiliary supply burden and improves no-load efficiency in PFC stages
Pb-free & RoHS-compliant packaging	Meets environmental compliance requirements for industrial and consumer power supplies

Applications

Industrial Switch-Mode Power Supplies

LED Driver Front-End Stages

Use Scenario: 1–3 kW AC/DC power supplies for factory automation controllers and PLCs requiring EN 61000-3-2 Class A compliance.

IC Role / Device Role / Timing Role: Primary PFC controller regulating boost stage to maintain stable 385 V DC bus and enforce sinusoidal input current.

Use Value: Achieves <5% THD at 20% load and >0.99 PF across full input range, reducing upstream filter size and EMI filtering cost.

Use Scenario: High-bay LED luminaires with universal input (85–265 V_AC) and constant-current output drivers.

IC Role / Device Role / Timing Role: Standalone PFC pre-regulator delivering tightly regulated DC bus to downstream LLC or buck-boost LED driver ICs.

Use Value: Enables single-stage design with high PF and low THD while supporting dimming compatibility and thermal derating down to 10% load.

Server PSU Front-End Modules

Medical Equipment AC/DC Converters

Use Scenario: Redundant 1+1 80 PLUS Titanium PSUs in data center servers requiring high efficiency and low harmonic injection.

IC Role / Device Role / Timing Role: Active harmonic filter controlling boost converter to meet IEC 61000-3-2 Class C limits for IT equipment.

Use Value: Delivers consistent PF >0.99 and THD <4% even under dynamic load transients, improving upstream transformer utilization.

Use Scenario: Diagnostic imaging systems (e.g., ultrasound, X-ray generators) needing clean, stable DC input with strict EMI and reliability requirements.

IC Role / Device Role / Timing Role: Critical PFC stage ensuring low line harmonics and robust overvoltage/undervoltage protection before isolation stage.

Use Value: Integrated OVR (12.5 V) and UVLO (10 V/8.5 V) provide fail-safe DC bus regulation, reducing risk of downstream component overstress.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PFC controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
UCC28019 (Texas Instruments)	Fixed-frequency CCM controller; no zero-current detection; higher startup current (~250 µA)	Lacks DCM support; less effective THD reduction at light loads	Preferred where fixed switching frequency simplifies EMI filter design and light-load THD is not critical
FAN4803 (ON Semiconductor)	Peak-current-mode CCM controller; no integrated OVR; requires external overvoltage protection	Needs external circuitry for DC bus overvoltage clamp; higher BOM count	Selected when cost-sensitive designs prioritize minimal external components over integrated protection

Compared with UCC28019 and FAN4803, the TDA4863-2 uniquely combines zero-current detection, integrated 12.5 V OVR, and sub-100 µA startup current-making it optimal for universal-input, low-THD, and high-reliability PFC stages where light-load performance and protection integration are essential.

Availability

TDA4863-2 is available at Aetrix Electronics and suitable for industrial switch-mode power supplies, LED driver front-end stages, server PSU modules, and medical AC/DC converters requiring stable component supply and long-term lifecycle support.

Supply support for TDA4863-2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global R&D and manufacturing infrastructure.

The TDA4863-2 belongs to Infineon's legacy PFC controller product line, engineered specifically for high-efficiency, low-THD active harmonic correction in universal-input offline power supplies.

FAQ

What is the function of the DETIN pin on the TDA4863-2?

DETIN monitors the auxiliary winding voltage of the boost inductor to detect zero-crossing of inductor current. This enables discontinuous conduction mode (DCM) operation and soft-switching control, improving light-load efficiency and reducing EMI. The internal zero-current detector triggers GTDRV reactivation only after current falls to zero, preventing hard switching losses.

How does the TDA4863-2 achieve low THD at light loads?

The TDA4863-2 uses an improved MULTIN input sensitivity and enhanced multiplier characteristics versus earlier TDA4862/TDA4863 versions, allowing accurate line-voltage sensing and current-shaping even below 20% load. Combined with zero-current detection, this maintains sinusoidal current draw and keeps THD below 8% at 10% load-critical for universal-input compliance.

Can the TDA4863-2 drive a 600 V MOSFET directly?

Yes-the TDA4863-2's GTDRV output provides sufficient peak sink current (20 A) and low-state voltage (0.85 V) to fully enhance standard 600 V N-channel superjunction MOSFETs (e.g., IPW60R041P7) without external gate drivers. Layout must minimize source inductance to preserve switching speed and avoid shoot-through.

What is the role of the VAOUT pin beyond error amplification?

VAOUT serves as both the voltage amplifier output and the first input to the internal analog multiplier. Its 5 V internal clamp prevents overdrive of the multiplier, while its 2.2 V inhibit threshold disables GTDRV during fault or startup-providing inherent overvoltage and soft-start protection without external circuitry.

TDA4863-2 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 8-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

Mode:: Discontinuous Conduction (DCM)

Frequency - Switching:: -

Current - Startup:: 20 µA

Voltage - Supply:: 12.5V ~ 20V

Operating Temperature:: -40°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: PG-DIP-8

TDA4863-2 FAQ

1.How can I place an order for TDA4863-2 through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA4863-2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TDA4863-2 reliable?

The price and inventory of TDA4863-2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA4863-2 is usually 5 days.

3.What payment methods are accepted for TDA4863-2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA4863-2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA4863-2?

TDA4863-2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA4863-2 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TDA4863-2?

For technical support, including TDA4863-2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA4863-2 requirements.

6.How does Aetrix verify that TDA4863-2 is sourced from the original manufacturer or authorized distributors?

All TDA4863-2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TDA4863-2 meets industry standards.

7.What is the process for return or replacement of TDA4863-2?

All TDA4863-2 units undergo pre-shipment inspection (PSI). If there is an issue with TDA4863-2, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TDA4863-2 part is unused and in its original packaging.

Return procedure for TDA4863-2:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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