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Infineon Technologies TDA4862G GEG
- Part No.:
- TDA4862G GEG
- Manufacturer:
- Infineon Technologies
- Category:
- PFC (Power Factor Correction)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TDA4862G GEG.pdf
- Description:
- IC PFC CTRLR DCM 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:2,877
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Product details
Overview
TDA4862G GEG 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 via auxiliary winding, and drives MOSFETs directly with a totem-pole gate driver. It is used in universal-input electronic ballasts and SMPS requiring IEC 61000-3-2 compliance.
For engineers reviewing the TDA4862G GEG datasheet, TDA4862G GEG pinout, TDA4862G GEG application, or TDA4862G GEG equivalent, key selection criteria include its DCM-based PFC architecture, integrated overvoltage regulator, internal start-up timer, undervoltage lockout with hysteresis, and compatibility with worldwide AC line voltages (90–270 VAC) without manual switching.
Technical Context
The TDA4862G implements a one-quadrant analog multiplier that combines rectified line voltage (via MULTIN) and regulated output voltage feedback (via VSENSE/VAOUT integrator) to generate a sinusoidal reference current. Its zero-current detector (DETIN) enables boundary-mode operation, eliminating dead time and minimizing diode reverse-recovery losses.
It employs a high-gain (0.8 MHz GBW), internally compensated voltage amplifier with 80° phase margin, and includes cycle-by-cycle current limiting, VCC zener clamping, and fast overvoltage regulation triggered by VAOUT current exceeding an internal threshold - all supporting stable, self-starting DCM PFC operation without external oscillator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Power Factor | >0.99 at full load; enables compliance with IEC 61000-3-2 Class C limits for lighting equipment. |
| Reference Voltage | 2.5 V ±1.4%; trimmed internal bandgap reference ensures stable output voltage regulation across temperature. |
| VCC UVLO Threshold | 8.5 V turn-on / 7.0 V turn-off; hysteresis prevents oscillation during brownout conditions. |
| Start-up Current | 75 µA typical; allows direct bootstrap start-up from rectified AC via high-value resistor without auxiliary supply. |
| Gate Drive Output | Totem-pole MOSFET driver with 4 Ω series resistors; minimizes cross-conduction and supports direct drive of medium-power MOSFETs. |
| Zero-Current Detection | Schmitt-trigger input (0.6 V hysteresis) on DETIN; ensures precise boundary-mode timing and reduces EMI from hard-switching. |
| Current Sense Filter | Integrated RC low-pass filter on ISENSE; suppresses switching noise spikes to prevent false current-limit triggering. |
Pinout & Package
Package: PG-DSO-8-1 (8-pin SOIC, exposed pad, RoHS-compliant, creepage ≥5.0 mm).
| 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 stable DC output regulation. |
| 2 VAOUT | Voltage amplifier output | Drives multiplier input; clamped at 5 V and suppressed below 2.2 V under no-load to prevent MOSFET overvoltage. |
| 3 MULTIN | Multiplier second input | Accepts scaled rectified line voltage (0–4 V); enables instantaneous line-current shaping proportional to input sine wave. |
| 4 ISENSE | Current sense negative input | Monitors MOSFET source current via shunt; internal clamp (–0.3 V) and RC filter reject turn-on spikes. |
| 5 DETIN | Zero-current detector input | Receives auxiliary winding signal; Schmitt trigger (0.6 V hysteresis) initiates next switching cycle at true inductor current zero-crossing. |
| 6 GND | Analog/digital ground reference | Common return for all signals; requires low-inductance 0.1 µF ceramic bypass to VCC. |
| 7 GTDRV | Gate driver output | Direct MOSFET gate drive; sinking/sourcing capability optimized for <1 nF gate capacitance; clamped during UVLO. |
| 8 VCC | Positive supply input | Powered via start-up resistor + storage cap or auxiliary winding; internal 11 V zener clamp protects against overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Sinusoidal line-current shaping | One-quadrant multiplier + zero-current detection enable true DCM operation with inherently low THD (<10%) and PF >0.99. |
| Self-starting operation | Internal restart timer eliminates need for external oscillator; starts automatically after 15 µs idle period post-zero-current event. |
| Robust protection suite | Includes cycle-by-cycle current limiting, VCC zener clamp, output overvoltage regulation, and UVLO with hysteresis - no external fault logic required. |
| Worldwide line voltage support | No manual configuration needed; regulates stable output across 90–270 VAC inputs due to wide-loop bandwidth and adaptive gain control. |
| Pin-compatible upgrade | Direct replacement for TDA4817 with identical pinout and enhanced performance (tighter reference, faster OVP, improved driver). |
Applications
| Electronic Ballasts | LED Driver Preconverters |
|---|---|
Use Scenario: High-efficiency fluorescent lamp ballasts operating from universal AC mains (90–270 VAC) with strict harmonic emission limits. IC Role / Device Role / Timing Role: PFC preconverter controller regulating boost stage in DCM to shape sinusoidal input current synchronized to line voltage. Use Value: Achieves IEC 61000-3-2 Class C compliance without external filters; eliminates bulk capacitor stress and improves lamp life. | Use Scenario: Constant-voltage LED drivers for commercial lighting where input current distortion must meet EN 61000-3-2. IC Role / Device Role / Timing Role: Active harmonic filter controller managing boost converter to deliver stable 400 V DC bus with near-sinusoidal input draw. Use Value: Enables single-stage topology with >92% system efficiency and reduced EMI filter size versus passive PFC solutions. |
| Industrial SMPS | UPS Input Stages |
Use Scenario: 300–500 W switched-mode power supplies for factory automation equipment requiring high reliability and low line pollution. IC Role / Device Role / Timing Role: Front-end PFC controller ensuring stable DC link voltage while maintaining PF >0.99 across variable loads and line sags. Use Value: Reduces RMS input current by ~30% vs. non-PFC designs, lowering upstream breaker and wiring sizing requirements. | Use Scenario: Online UPS systems needing clean, regulated rectified input before battery inverter stage. IC Role / Device Role / Timing Role: Harmonic suppression controller in AC/DC front-end, operating in DCM to avoid transformer saturation during generator-fed operation. Use Value: Prevents generator waveform distortion and maintains UPS input stability even under nonlinear load transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-factor controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICE2PCS01 | Fixed-frequency CCM controller with digital core; requires external MOSFET driver; no integrated zero-current detector. | Better suited for higher-power (>600 W), continuous-conduction-mode designs with tighter output ripple requirements. | Select ICE2PCS01 when designing for >500 W with fixed-frequency EMI control and lower THD at light load. |
| TDA4863 | Pin-compatible successor with improved VCC UVLO (10.5 V/8.5 V), enhanced gate drive strength, and extended temperature range (–40°C to +125°C). | Drop-in upgrade path for new designs targeting extended ambient operation and higher reliability in industrial environments. | Choose TDA4863 for new designs requiring wider operating temperature margin and tighter UVLO control. |
Compared with ICE2PCS01 and TDA4863, the TDA4862G GEG offers superior DCM-specific optimization - including integrated zero-current detection, self-timed restart, and simplified layout - making it ideal for cost-sensitive, universal-input ballast and mid-power SMPS applications where simplicity and proven reliability outweigh advanced digital features.
Availability
TDA4862G GEG is available at Aetrix Electronics and suitable for electronic ballasts, LED driver preconverters, industrial SMPS, and UPS input stages requiring stable component supply with long-term lifecycle assurance.
Supply support for TDA4862G GEG 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 TDA4862G belongs to Infineon's legacy bipolar PFC controller product line, engineered specifically for cost-effective, robust DCM boost preconversion in lighting and universal-input power supplies.
FAQ
What is the recommended minimum VCC bypass capacitor for stable operation?
A minimum 100 nF ceramic capacitor must be placed directly between VCC and GND, as close as possible to pins 6 and 8. This capacitor absorbs gate-drive current spikes and stabilizes the internal bias network. Larger values (e.g., 470 nF) improve immunity to line transients but do not replace the need for proper PCB layout with short, low-inductance traces.
Can the TDA4862G GEG operate without an auxiliary winding on the boost inductor?
No - the DETIN pin requires a dedicated auxiliary winding to detect zero inductor current accurately. Omitting it disables boundary-mode control, causing erratic switching, increased diode stress, and failure to achieve specified power factor. The winding ratio must be selected so DETIN voltage crosses the Schmitt threshold (≈0.6 V hysteresis) precisely at current zero.
How does the internal overvoltage regulation respond during sudden load removal?
During rapid load removal, VAOUT integrates excessive output voltage error, causing current to exceed the internal 1.3 V threshold. This triggers immediate reduction of the multiplier output, curtailing gate drive pulse width within one switching cycle - preventing MOSFET avalanche and limiting output overshoot to <5% of nominal voltage.
Is the TDA4862G GEG compatible with MOSFETs having >1 nF total gate charge?
Not directly - the totem-pole driver is optimized for MOSFETs with ≤1 nF effective gate capacitance. Driving larger devices risks insufficient slew rate and increased cross-conduction loss. For >1 nF gates, add a discrete buffer stage (e.g., complementary BJT pair) between GTDRV and the MOSFET gate, preserving the 4 Ω series resistors for damping.
TDA4862G GEG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Mode:
- Discontinuous Conduction (DCM)
- Frequency - Switching:
- -
- Current - Startup:
- -
- Voltage - Supply:
- 11V ~ 19V
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-8
TDA4862G GEG FAQ
1.How can I place an order for TDA4862G GEG through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA4862G GEG 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 TDA4862G GEG reliable?
The price and inventory of TDA4862G GEG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA4862G GEG is usually 5 days.
3.What payment methods are accepted for TDA4862G GEG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA4862G GEG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA4862G GEG?
TDA4862G GEG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA4862G GEG 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 TDA4862G GEG?
For technical support, including TDA4862G GEG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA4862G GEG requirements.
6.How does Aetrix verify that TDA4862G GEG is sourced from the original manufacturer or authorized distributors?
All TDA4862G GEG 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 TDA4862G GEG meets industry standards.
7.What is the process for return or replacement of TDA4862G GEG?
All TDA4862G GEG units undergo pre-shipment inspection (PSI). If there is an issue with TDA4862G GEG, 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 TDA4862G GEG part is unused and in its original packaging.
Return procedure for TDA4862G GEG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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