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Infineon Technologies ICE2QR4765XKLA1
- Part No.:
- ICE2QR4765XKLA1
- Manufacturer:
- Infineon Technologies
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ICE2QR4765XKLA1.pdf
- Description:
- IC OFFLINE SWITCH FLYBACK 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,948
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Product details
Overview
ICE2QR4765XKLA1 from Infineon Technologies is a quasi-resonant PWM controller IC with integrated 650V CoolMOS® and startup cell in PG-DIP-8 package, designed for off-line SMPS in LCD monitors, DVD players, and set-top boxes. It delivers 30W maximum input power at 230VAC ±15%, operates across 85–265VAC input, supports Active Burst Mode (<100mW no-load standby), and features digital frequency reduction for efficiency optimization.
For engineers reviewing the ICE2QR4765XKLA1 datasheet, ICE2QR4765XKLA1 pinout, ICE2QR4765XKLA1 application, or ICE2QR4765XKLA1 equivalent, key selection criteria include integrated high-voltage startup capability, zero-crossing detection for QR timing, cycle-by-cycle current limiting, foldback point correction, and auto-restart protection architecture.
Technical Context
The ICE2QR4765XKLA1 implements current-mode control with digital zero-crossing detection and an up/down counter to enable quasi-resonant switching synchronized to valley points of drain voltage ringing. Its built-in 650V CoolMOS® eliminates external HV startup circuitry and reduces component count in flyback converters.
It integrates analog comparators for CS/FB-based PWM shutdown, digital logic for soft-start (12ms, 4-step), Active Burst Mode entry/exit thresholds, and protection triggers including VCC OVP/UVP, overtemperature, overload, and adjustable output overvoltage via ZC pin monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 85–265 VAC: Enables universal mains operation without manual range switching. |
| Integrated MOSFET | 650 V CoolMOS®: Eliminates external HV startup resistor and enables direct rectified-line connection. |
| Max Output Power | 30 W @ 230VAC: Specifies usable continuous power level under nominal line conditions. |
| Standby Power | <100 mW @ no load: Meets stringent energy-efficiency standards like ErP Lot 6. |
| Soft-Start Duration | 12 ms (4-step digital): Limits inrush current and stress on transformer, diode, and switch during startup. |
| Protection Modes | Auto-restart for VCC OVP/UVP, overload, OTP; latch-off for OVP & short-winding: Ensures robust fault recovery behavior. |
| Quasi-Resonant Control | Digital ZC detection + ringing suppression timer: Enables valley-switching even at light loads to minimize switching loss. |
Pinout & Package
Package: PG-DIP-8 (Plastic Dual In-line Package, 8-pin, through-hole mount). Pin 4 and Pin 5 are internally shorted as common Drain terminal for the integrated CoolMOS®.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ZC) | Zero-Crossing Input | Accepts auxiliary winding signal; used for QR valley detection and output overvoltage sensing via internal threshold comparison. |
| 2 (FB) | Feedback Input | Primary regulation node: controls PWM off-time, burst ratio, frequency reduction, and open-loop protection. |
| 3 (CS) | Current Sense Input | Connects to primary-side shunt; enables peak current limiting, foldback correction, and short-winding detection. |
| 4 & 5 (Drain) | CoolMOS® Drain Terminal | High-side power switch node; rated for 650V avalanche rugged operation; pins shorted internally. |
| 6 (n.c.) | No Connection | Unbonded pad; must remain unconnected in PCB layout. |
| 7 (VCC) | Controller Supply | IC bias supply (10.5–18 V range); powered by startup cell initially, then auxiliary winding post-startup. |
| 8 (GND) | Signal Ground | Common reference for all internal analog/digital blocks and external feedback network. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 650V CoolMOS® + startup cell | Reduces BOM count by eliminating external HV startup resistor and associated RC network. |
| Active Burst Mode | Enables <100mW no-load input power while maintaining tight output voltage regulation and low ripple. |
| Digital frequency reduction | Decreases switching frequency linearly with load to reduce core and switching losses at partial load. |
| Built-in digital soft-start | 12ms, 4-step ramp limits peak primary current during startup, preventing transformer saturation. |
| Foldback point correction | Adjusts current limit threshold dynamically to maintain stable power delivery across line and load variations. |
Applications
| LCD Monitor Power Supply | DVD/Blu-ray Player SMPS |
|---|---|
|
Use Scenario: Primary-side regulated flyback converter powering main logic board and backlight inverter. IC Role / Device Role / Timing Role: Quasi-resonant PWM controller with integrated HV switch and startup cell; provides valley-synchronized gate drive and real-time current regulation. Use Value: Achieves 30W output with <100mW standby, meeting ENERGY STAR v6.0 requirements for display devices. |
Use Scenario: Compact, low-noise AC/DC adapter for optical disc drives with variable load profiles. IC Role / Device Role / Timing Role: Integrated controller managing QR switching, burst mode transitions, and multi-level protection during disc spin-up and read/write cycles. Use Value: Digital frequency reduction maintains >85% efficiency from 10% to 100% load, reducing thermal stress on enclosed plastic enclosures. |
| Set-Top Box Adapter | Small Form-Factor PC PSU |
|
Use Scenario: Wall-plug AC/DC converter delivering 12V/5V rails for IPTV and streaming media hardware. IC Role / Device Role / Timing Role: Primary-side controller implementing active burst mode and ZC-based QR timing to meet CoC Tier 2 standby limits. Use Value: Integrated startup cell eliminates HV resistor failure mode, improving long-term reliability in unattended deployments. |
Use Scenario: Auxiliary power supply for motherboard standby rail (5VSB) and fan control in compact desktop systems. IC Role / Device Role / Timing Role: High-voltage integrated controller enabling single-stage conversion from rectified AC to isolated 5V output. Use Value: PG-DIP-8 package allows through-hole mounting compatible with automated wave soldering and high-vibration environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quasi-resonant SMPS controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICE2QR4765Z | Same die, PG-DSO-8 package (surface-mount); lacks DIP-8 creepage clearance and through-hole mechanical retention. | Suitable for SMT-only production; not recommended where safety spacing or vibration resistance is critical. | Select ICE2QR4765XKLA1 for through-hole assembly, higher isolation, or legacy board compatibility. |
| ICE3BR4765J | Next-generation CoolSET®-Q2 with improved EMI performance, lower standby (<75mW), and enhanced ZC noise immunity. | Requires minor schematic updates (e.g., FB compensation, ZC RC values); supports higher power density designs. | Choose ICE3BR4765J for new designs targeting ErP Lot 9 or IEC 62368-1 reinforced insulation requirements. |
Compared with ICE2QR4765Z and ICE3BR4765J, the ICE2QR4765XKLA1 offers proven DIP-8 reliability for high-creepage industrial adapters and simplifies compliance with UL/EN 62368-1 spacing rules-without requiring layout rework or protection recalibration.
Availability
ICE2QR4765XKLA1 is available at Aetrix Electronics and suitable for LCD monitor power supplies, DVD/Blu-ray player SMPS, and set-top box adapters requiring stable component supply, long-lifecycle support, and through-hole manufacturability.
Supply support for ICE2QR4765XKLA1 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 CoolSET®-Q1 product line was engineered specifically for cost-sensitive, high-volume off-line SMPS in consumer electronics-integrating HV power switches and control logic to minimize external components and improve system-level reliability.
FAQ
What is the purpose of the ZC pin in ICE2QR4765XKLA1?
The ZC (Zero Crossing) pin receives a delayed signal from the transformer auxiliary winding to detect valley points of drain voltage ringing. Internally, it drives the quasi-resonant switch-on timing and also serves as the input for output overvoltage protection by comparing ZC voltage against a fixed internal threshold (typically ~2.5 V).
Does ICE2QR4765XKLA1 require an external startup resistor?
No. The device integrates a 650V startup cell within the CoolMOS® structure, which pre-charges the VCC capacitor directly from the rectified mains. This eliminates the need for an external high-voltage startup resistor and associated power loss, improving efficiency and reliability.
How does Active Burst Mode reduce standby power?
During light/no-load conditions, the IC enters Active Burst Mode by pausing switching cycles and only activating the controller intermittently to sample FB voltage. This reduces average switching loss and bias current consumption, achieving <100 mW input power while maintaining regulated output voltage with controlled ripple.
What protections are implemented with auto-restart versus latch-off behavior?
Auto-restart applies to VCC overvoltage/undervoltage, overload, and overtemperature faults-causing periodic restart attempts after a timeout. Latch-off is used for output overvoltage and transformer short-winding detection, requiring power cycle reset to restore operation for safety-critical fault conditions.
ICE2QR4765XKLA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- CoolMOS™, CoolSET™-Q1
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Output Isolation:
- Isolated
- Internal Switch(s):
- Yes
- Voltage - Breakdown:
- 650V
- Topology:
- Flyback
- Voltage - Start Up:
- 18 V
- Voltage - Supply (Vcc/Vdd):
- 10.5V ~ 27V
- Duty Cycle:
- 50%
- Frequency - Switching:
- 52kHz
- Power (Watts):
- 30 W
- Fault Protection:
- Current Limiting, Over Load, Over Temperature, Over Voltage
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- PG-DIP-8
- Mounting Type:
- Through Hole
ICE2QR4765XKLA1 FAQ
1.How can I place an order for ICE2QR4765XKLA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ICE2QR4765XKLA1 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 ICE2QR4765XKLA1 reliable?
The price and inventory of ICE2QR4765XKLA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE2QR4765XKLA1 is usually 5 days.
3.What payment methods are accepted for ICE2QR4765XKLA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE2QR4765XKLA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICE2QR4765XKLA1?
ICE2QR4765XKLA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICE2QR4765XKLA1 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 ICE2QR4765XKLA1?
For technical support, including ICE2QR4765XKLA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE2QR4765XKLA1 requirements.
6.How does Aetrix verify that ICE2QR4765XKLA1 is sourced from the original manufacturer or authorized distributors?
All ICE2QR4765XKLA1 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 ICE2QR4765XKLA1 meets industry standards.
7.What is the process for return or replacement of ICE2QR4765XKLA1?
All ICE2QR4765XKLA1 units undergo pre-shipment inspection (PSI). If there is an issue with ICE2QR4765XKLA1, 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 ICE2QR4765XKLA1 part is unused and in its original packaging.
Return procedure for ICE2QR4765XKLA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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