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Infineon Technologies TDA4862XKLA1
- Part No.:
- TDA4862XKLA1
- Manufacturer:
- Infineon Technologies
- Category:
- PFC (Power Factor Correction)
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TDA4862XKLA1.pdf
- Description:
- IC PFC CTRLR DCM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,274
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Product details
Overview
TDA4862XKLA1 from Infineon Technologies is a bipolar power-factor controller IC designed for active harmonic filtering in discontinuous-conduction-mode (DCM) boost preconverters. It delivers near-unity power factor (>0.99), integrates a ±1.4% trimmed 2.5 V reference, features zero-current detection for lossless switching, and includes a high-current totem-pole gate driver capable of directly driving external MOSFETs in electronic ballasts and universal-input SMPS.
For engineers reviewing the TDA4862XKLA1 datasheet, TDA4862XKLA1 pinout, TDA4862XKLA1 application, or TDA4862XKLA1 equivalent, key selection criteria include its DCM-based PFC control architecture, integrated overvoltage regulation, internal start-up timer, undervoltage lockout with hysteresis, and compatibility with worldwide AC line voltages (90–270 VAC) without manual range switching.
Technical Context
The TDA4862XKLA1 implements a one-quadrant analog multiplier that combines rectified line voltage (via MULTIN) and regulated output voltage feedback (via VSENSE/VAOUT) to generate a sinusoidal current reference. Its zero-current detector (DETIN) enables boundary-mode operation by sensing auxiliary winding voltage, eliminating dead time and minimizing diode reverse-recovery losses.
It integrates a 0.8 MHz gain-bandwidth voltage amplifier with 80° phase margin, internal 5 V clamping on VAOUT, cycle-by-cycle current limiting via ISENSE, and fast overvoltage protection triggered by VAOUT current exceeding an internal threshold-ensuring stable output regulation during load transients and open-circuit conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Power Factor | >0.99 at full load; enables compliance with IEC 555 harmonic limits. |
| Reference Voltage | 2.5 V ±1.4%; trimmed internal bandgap reference for precise output voltage regulation. |
| Start-up Current | 75 µA typical; enables low-power auxiliary supply design using high-value start-up resistors. |
| Gate Driver Output | Totem-pole structure with 4 Ω series source/sink resistors; minimizes cross-conduction while driving MOSFET gates directly. |
| UVLO Threshold | VCC turn-on: 11 V, turn-off: 8.5 V; provides hysteresis to prevent oscillation during brownout. |
| Zero-Detect Hysteresis | 0.6 V; ensures robust triggering despite noise on DETIN auxiliary winding signal. |
| VAOUT Clamp | 5 V internal clamp; prevents overshoot during fast load steps and startup transients. |
Pinout & Package
Package: PG-DIP-8-1 (8-pin plastic dual in-line package, 0.3 inch body width, standard through-hole mounting).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VSENSE | Inverting input of voltage amplifier | Connects to output voltage divider; forms integrator with external capacitor on VAOUT for average-voltage feedback. |
| 2 VAOUT | Voltage amplifier output | Drives multiplier input; clamped at 5 V internally; suppresses pulses below 2.2 V under no-load. |
| 3 MULTIN | Multiplier second input | Accepts scaled rectified line voltage (0–4 V); enables sinusoidal current shaping proportional to input haversine. |
| 4 ISENSE | Current sense negative input | Monitors MOSFET source current via shunt resistor; includes internal RC filter and –0.3 V clamp. |
| 5 DETIN | Zero-current detector input | Receives auxiliary winding signal; Schmitt-triggered with 0.6 V hysteresis for reliable DCM timing. |
| 6 GND | Analog/digital ground reference | Common return for all signals; requires direct 0.1 µF ceramic bypass to VCC. |
| 7 GTDRV | Gate drive output | Push-pull output stage; sinks/source current to drive MOSFET gate without external buffer. |
| 8 VCC | Positive supply input | Operates from 11–20 V; requires 100 nF ceramic capacitor to ground for gate charge surge absorption. |
Key Features
| Feature | Design Value |
|---|---|
| Sinusoidal line-current shaping | Enables >0.99 PF via analog multiplier combining instantaneous line voltage and regulated output feedback. |
| Discontinuous conduction mode (DCM) control | Zero-current detection eliminates dead time and reduces boost diode reverse-recovery losses. |
| Integrated overvoltage protection | Fast regulation path bypasses integrator during transients-prevents MOSFET overvoltage during load dump or arcing. |
| Internal start-up timer | 15 µs timeout ensures automatic restart after inductor current decay, eliminating need for external oscillator. |
| Undervoltage lockout with hysteresis | 11 V/8.5 V thresholds prevent erratic operation during brownout or soft-start conditions. |
Applications
| LED Ballast Preconverter | Universal-Input SMPS |
|---|---|
Use Scenario: High-efficiency LED drivers operating from 90–270 VAC mains with strict THD requirements. IC Role / Device Role / Timing Role: Controls DCM boost converter as active harmonic filter to shape input current into sine wave synchronized with line voltage. Use Value: Achieves <5% THD and >0.99 PF without input voltage switches-reducing EMI filter size and enabling compact, globally compliant designs. | Use Scenario: Industrial AC/DC power supplies requiring IEC 555-2 compliance across wide input voltage range. IC Role / Device Role / Timing Role: Functions as front-end PFC controller regulating boost output to 385 VDC while maintaining sinusoidal input current. Use Value: Enables single-design compatibility with 50/60 Hz and 90–270 VAC inputs-eliminating manual configuration and reducing BOM variants. |
| Compact Fluorescent Lamp (CFL) Ballast | Medical Power Supply Input Stage |
Use Scenario: Low-cost, high-reliability CFL electronic ballasts targeting Class C harmonic limits. IC Role / Device Role / Timing Role: Implements boundary-conduction PFC to replace passive filters, reducing bulk capacitor stress and audible noise. Use Value: Reduces peak line current by >40% versus passive solutions-extending electrolytic capacitor lifetime and improving thermal performance. | Use Scenario: Safety-critical medical AC/DC adapters requiring low harmonic injection and high reliability. IC Role / Device Role / Timing Role: Provides regulated, low-noise DC bus for downstream isolated converters while meeting EN 61000-3-2 Class A limits. Use Value: Integrates cycle-by-cycle current limiting and UVLO hysteresis-ensuring fail-safe shutdown during input anomalies per IEC 60601-1. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-factor controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC3817D | Fixed-frequency continuous-conduction-mode (CCM) controller; no zero-current detection; requires external oscillator. | Designed for higher-power CCM PFC stages (>250 W); less suitable for DCM ballast applications. | Select when higher output power and fixed-frequency EMI control are prioritized over DCM efficiency. |
| TDA4863G | Pin-compatible successor with improved ESD rating (4 kV HBM), lower start-up current (50 µA), and enhanced DETIN noise immunity. | Drop-in replacement for new designs; identical functional behavior but extended lifecycle and tighter tolerances. | Select for new designs requiring longer-term availability and improved robustness in noisy industrial environments. |
Compared with UCC3817D and TDA4863G, the TDA4862XKLA1 offers optimized DCM control for sub-150 W ballasts and universal SMPS, delivering superior light-load efficiency and simpler magnetics than CCM alternatives-while TDA4863G provides a direct upgrade path with no circuit redesign.
Availability
TDA4862XKLA1 is available at Aetrix Electronics and suitable for LED ballast preconverters, universal-input SMPS, compact fluorescent lamp (CFL) ballasts, and medical power supply input stages requiring stable component supply and long-term industrial support.
Supply support for TDA4862XKLA1 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 is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in high-voltage analog and mixed-signal solutions.
The TDA4862XKLA1 belongs to Infineon's legacy bipolar PFC controller product line, engineered specifically for cost-sensitive, high-efficiency DCM boost preconverters in lighting and universal-input power supplies.
FAQ
What is the recommended external capacitor value between VSENSE and VAOUT?
A 10 nF to 100 nF ceramic capacitor is typically used to form the integrator with the voltage amplifier. This sets loop bandwidth below 20 Hz for stable output regulation across line cycles. Larger values increase phase margin but slow transient response; smaller values improve dynamic performance but risk instability under varying loads.
Does TDA4862XKLA1 support continuous conduction mode (CCM)?
No-it is explicitly designed for discontinuous conduction mode (DCM) operation using zero-current detection on DETIN. Its internal logic, PWM timing, and current-sense comparator thresholds are optimized for triangular inductor current waveforms and boundary-mode control-not fixed-frequency CCM operation.
How is the overvoltage protection triggered and what happens when activated?
OVP activates when excessive current flows into VAOUT during fast output voltage transients-exceeding an internal threshold. This reduces the multiplier output voltage, lowering gate drive duty cycle to limit MOSFET conduction and clamp output voltage. The action is fast, independent of the main integrator, and recovers automatically once VAOUT current normalizes.
Can TDA4862XKLA1 operate without an auxiliary winding on the boost inductor?
No-DETIN requires a properly phased auxiliary winding to detect inductor current zero-crossing. Omitting it disables DCM operation, causing uncontrolled conduction, excessive MOSFET stress, and failure to achieve sinusoidal line current. The winding ratio must be selected to keep DETIN voltage within 0–5 V range during operation.
TDA4862XKLA1 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:
- -
- Voltage - Supply:
- 11V ~ 19V
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- PG-DIP-8
TDA4862XKLA1 FAQ
1.How can I place an order for TDA4862XKLA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA4862XKLA1 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 TDA4862XKLA1 reliable?
The price and inventory of TDA4862XKLA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA4862XKLA1 is usually 5 days.
3.What payment methods are accepted for TDA4862XKLA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA4862XKLA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA4862XKLA1?
TDA4862XKLA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA4862XKLA1 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 TDA4862XKLA1?
For technical support, including TDA4862XKLA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA4862XKLA1 requirements.
6.How does Aetrix verify that TDA4862XKLA1 is sourced from the original manufacturer or authorized distributors?
All TDA4862XKLA1 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 TDA4862XKLA1 meets industry standards.
7.What is the process for return or replacement of TDA4862XKLA1?
All TDA4862XKLA1 units undergo pre-shipment inspection (PSI). If there is an issue with TDA4862XKLA1, 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 TDA4862XKLA1 part is unused and in its original packaging.
Return procedure for TDA4862XKLA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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