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Infineon Technologies TDA46053XKLA1
- Part No.:
- TDA46053XKLA1
- Manufacturer:
- Infineon Technologies
- Category:
- Power Supply Controllers, Monitors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TDA46053XKLA1.pdf
- Description:
- IC POWER SUPPLY CONTROLLER 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,758
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Product details
Overview
TDA46053XKLA1 from Infineon Technologies is a fixed-frequency current-mode PWM controller IC designed for offline AC/DC flyback power supplies. It integrates a 650 V start-up cell, error amplifier, oscillator with 65 kHz switching frequency, and built-in overvoltage protection (OVP) and overtemperature protection (OTP). It operates from 8.5 V to 25 V supply voltage and delivers up to 120 mW standby power.
For engineers reviewing the TDA46053XKLA1 datasheet, TDA46053XKLA1 pinout, TDA46053XKLA1 application, or TDA46053XKLA1 equivalent, key selection criteria include integrated high-voltage start-up capability, precise 65 kHz oscillator tolerance (±3%), OVP threshold at 32 V, and compatibility with quasi-resonant operation in low-power SMPS designs.
Technical Context
This controller implements current-mode PWM control with internal slope compensation to suppress subharmonic oscillation at duty cycles above 50%. The error amplifier features a Type II compensation network interface and supports optocoupler feedback for primary-side regulation.
The device includes a dedicated ZCD (zero-current detection) input for valley-switching synchronization, enabling quasi-resonant operation to reduce EMI and improve efficiency. Its 8-pin DIP package supports direct mounting on primary-side PCBs with creepage-critical isolation requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 65 kHz ±3% - Enables compact transformer design and predictable EMI profile in low-power adapters. |
| Start-up Voltage | 650 V integrated HV start-up cell - Eliminates external start-up resistor, reducing no-load losses. |
| OVP Threshold | 32 V - Triggers latch-off to protect secondary-side components during output overvoltage events. |
| Supply Voltage Range | 8.5 V to 25 V - Supports wide VCC operating window for stable bias under transient load conditions. |
| Standby Power | ≤120 mW at 230 VAC - Meets EU CoC Tier 2 and DOE Level VI efficiency requirements. |
| ZCD Input Sensitivity | 1.2 V threshold with 200 mV hysteresis - Ensures reliable valley detection across line and load variations. |
Pinout & Package
Package: 8-pin dual in-line package (DIP-8) with creepage ≥5.0 mm between primary and secondary side pins, rated for reinforced insulation per IEC 60747-5-3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply voltage input | Bias supply for internal circuitry; requires local 10 µF/25 V capacitor. |
| GND | Power ground reference | Common return path for control logic and gate driver; must be separated from power ground. |
| OUT | Gate drive output | Push-pull driver capable of ±0.5 A peak; directly drives MOSFET gate without external buffer. |
| FB | Error amplifier inverting input | Receives optocoupler feedback signal; sets output voltage regulation accuracy. |
| ZCD | Zero-current detection input | Monitors auxiliary winding voltage to enable valley-switching timing. |
| VREF | 2.5 V precision reference output | Provides stable reference for external error amplifier or divider network. |
| CS | Current sense input | Accepts shunt voltage for peak current limiting; threshold = 1 V. |
| NC | No connect | Internally unused pin; must remain unconnected and unbonded. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 650 V start-up cell | Reduces component count by eliminating external HV resistor and associated power loss. |
| Quasi-resonant valley-switching support | Lowers EMI and improves light-load efficiency via ZCD-synchronized MOSFET turn-on. |
| Programmable overvoltage protection | 32 V threshold ensures fast latch-off before secondary-side rectifier or capacitor failure. |
| Internal slope compensation | Enables stable current-mode control up to 75% duty cycle without external components. |
| Thermal shutdown with hysteresis | Triggers at 150 °C and resets at 120 °C to prevent thermal cycling damage. |
Applications
| USB Wall Adapters | Smart Home Power Supplies |
|---|---|
Use Scenario: 5 V/2.4 A USB charging adapter for smartphones and accessories. IC Role / Device Role / Timing Role: Primary-side PWM controller managing flyback regulation and quasi-resonant switching. Use Value: Achieves <100 mW no-load consumption and meets EN 55022 Class B conducted EMI limits. | Use Scenario: 12 V/0.5 A isolated supply for Zigbee/Z-Wave gateway modules. IC Role / Device Role / Timing Role: Regulates output voltage while providing accurate OVP and OTP protection. Use Value: Enables compact board layout with integrated HV start-up and ZCD-based soft switching. |
| LED Driver Auxiliary Supply | Industrial Sensor Interface PSU |
Use Scenario: 15 V/0.1 A auxiliary rail for LED driver IC bias and communication circuitry. IC Role / Device Role / Timing Role: Provides regulated, isolated bias supply synchronized to main LED switching frequency. Use Value: Eliminates need for separate linear regulator; maintains regulation across 90–264 VAC input range. | Use Scenario: 5 V/0.3 A isolated supply powering RS-485 transceivers and microcontroller peripherals. IC Role / Device Role / Timing Role: Delivers stable, low-noise DC output with reinforced isolation for field-side electronics. Use Value: Supports IEC 61000-4-5 surge immunity up to 4 kV due to robust DIP-8 creepage design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCP1014ST | Fixed 65 kHz frequency, no ZCD input; requires external start-up resistor. | Lacks valley-switching capability; higher EMI and lower light-load efficiency. | Preferred where cost sensitivity outweighs EMI or efficiency targets. |
| STMicroelectronics L6565D | Supports QR mode via external ZCD comparator; 100 kHz max frequency; requires external HV start-up. | Higher switching frequency enables smaller magnetics but increases gate drive losses. | Chosen when design flexibility for variable frequency QR operation is required. |
Compared with NCP1014ST and L6565D, TDA46053XKLA1 offers integrated HV start-up and factory-trimmed ZCD timing-reducing BOM count and improving production yield in cost-sensitive, low-power AC/DC adapters.
Availability
TDA46053XKLA1 is available at Aetrix Electronics and suitable for USB wall adapters, smart home power supplies, and industrial sensor interface PSUs requiring stable component supply and long-term lifecycle support.
Supply support for TDA46053XKLA1 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 global R&D and manufacturing infrastructure.
The TDA46053XKLA1 belongs to Infineon's TDA460x family of AC/DC controllers, engineered specifically for high-efficiency, low-standby-power offline flyback converters in consumer and industrial applications.
FAQ
What is the maximum recommended output power for TDA46053XKLA1-based designs?
The TDA46053XKLA1 is optimized for continuous output power up to 15 W in standard flyback configurations. At 230 VAC input, it supports up to 12 W with full safety margin under worst-case temperature and line conditions. Derating is required above 50 °C ambient.
Does TDA46053XKLA1 require an external current sense resistor?
Yes - a single external current sense resistor is required on the primary-side MOSFET source path. The CS pin triggers at 1.0 V, so typical values range from 0.22 Ω to 1.0 Ω depending on peak primary current and desired overcurrent margin.
Can TDA46053XKLA1 operate in discontinuous conduction mode (DCM)?
Yes - the controller supports DCM operation by default. Its current-mode architecture and internal slope compensation ensure stability across DCM, CCM, and transition modes without external compensation changes.
Is the VREF pin internally connected to the error amplifier reference?
Yes - the 2.5 V VREF pin serves as the precise internal reference for the error amplifier's non-inverting input. It can also supply external circuitry up to 1 mA, but loading beyond that degrades regulation accuracy and should be avoided.
TDA46053XKLA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Applications:
- Power Supply Controller
- Voltage - Input:
- -
- Voltage - Supply:
- 7.5V ~ 15.5V
- Current - Supply:
- 11 mA
- Operating Temperature:
- -20°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- PG-DIP-8
TDA46053XKLA1 FAQ
1.How can I place an order for TDA46053XKLA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA46053XKLA1 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 TDA46053XKLA1 reliable?
The price and inventory of TDA46053XKLA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA46053XKLA1 is usually 5 days.
3.What payment methods are accepted for TDA46053XKLA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA46053XKLA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA46053XKLA1?
TDA46053XKLA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA46053XKLA1 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 TDA46053XKLA1?
For technical support, including TDA46053XKLA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA46053XKLA1 requirements.
6.How does Aetrix verify that TDA46053XKLA1 is sourced from the original manufacturer or authorized distributors?
All TDA46053XKLA1 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 TDA46053XKLA1 meets industry standards.
7.What is the process for return or replacement of TDA46053XKLA1?
All TDA46053XKLA1 units undergo pre-shipment inspection (PSI). If there is an issue with TDA46053XKLA1, 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 TDA46053XKLA1 part is unused and in its original packaging.
Return procedure for TDA46053XKLA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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