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Infineon Technologies ICE3B1065FKLA1
- Part No.:
- ICE3B1065FKLA1
- Manufacturer:
- Infineon Technologies
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ICE3B1065FKLA1.pdf
- Description:
- IC OFFLINE SWITCH FLYBACK 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,568
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Product details
Overview
ICE3B1065FKLA1 from Infineon Technologies is an off-line AC/DC current-mode PWM controller with integrated 650V depletion-mode CoolMOS™ power transistor and startup cell, housed in PG-DIP-8 package. It delivers up to 32W input power at 230VAC ±15%, operates at fixed 67kHz switching frequency, features ±5% peak current limiting tolerance, and enables <100mW standby power via Active Burst Mode - used in compact open-frame SMPS for consumer adapters and industrial auxiliary supplies.
For engineers reviewing the ICE3B1065FKLA1 datasheet, ICE3B1065FKLA1 pinout, ICE3B1065FKLA1 application, or ICE3B1065FKLA1 equivalent, key selection criteria include its integrated 650V CoolMOS™, DIP-8 isolation capability, adjustable blanking window for load-jump immunity, Auto Restart protection modes (overtemperature, overvoltage, open-loop), and precise soft-start control - all critical for reliable low-component-count flyback designs.
Technical Context
The ICE3B1065FKLA1 implements a current-mode control architecture with internal oscillator set to 67kHz, leading-edge blanking, and propagation delay compensation to ensure accurate peak-current sensing under fast transient conditions. Its integrated CoolMOS™ switch eliminates external high-voltage MOSFET and startup resistor, reducing BOM count and PCB footprint.
Control logic includes dedicated circuitry for Active Burst Mode entry/exit based on feedback voltage level, plus independent Auto Restart latching for VCC undervoltage, output overvoltage, overtemperature, overload, and open-loop faults - each with defined recovery timing and fault-handling behavior confirmed in functional description sections.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | Fixed 67 kHz - ensures predictable EMI profile and simplifies filter design for Class B conducted emissions compliance. |
| Integrated Power Switch | 650 V avalanche-rugged depletion CoolMOS™ - enables direct rectified AC line connection without external HV starter network. |
| Peak Current Limit Tolerance | ±5% - allows precise transformer primary inductance and sense resistor selection for consistent power delivery across temperature and unit variance. |
| Standby Power | <100 mW at no load - achieved via Active Burst Mode with immediate load-jump response, meeting EU CoC Tier 2 and DOE Level VI requirements. |
| Max Duty Cycle | 72% - supports wide input voltage range (85–265 VAC) while maintaining sufficient off-time for transformer reset in discontinuous conduction mode. |
| Startup Cell Voltage Rating | 650 V - integrates high-voltage startup path, eliminating external 1 MΩ+ startup resistor and associated power loss. |
| Protection Modes | Auto Restart for VCC UVLO, overtemperature, overvoltage, overload, and open-loop - provides fail-safe shutdown with automatic recovery, avoiding latch-off in non-critical faults. |
Pinout & Package
ICE3B1065FKLA1 uses the PG-DIP-8 package with creepage-enhanced layout and internal short between pins 4 and 5 (dual drain connection). The package provides reinforced isolation between high-voltage drain and low-voltage control circuitry, supporting >4 mm creepage distance required for basic insulation in 230VAC applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | SoftS | Soft-start timing node - external capacitor sets ramp-up time for controlled VCC rise and inrush current limitation. |
| 2 | FB | Optocoupler feedback input - regulates output voltage by modulating duty cycle via error amplifier output. |
| 3 | CS | Current sense input - connects to source of integrated CoolMOS™; senses primary current for cycle-by-cycle limiting. |
| 4 & 5 | Drain | Dual high-voltage drain terminals - internally shorted; connect directly to transformer primary and bulk capacitor positive rail. |
| 6 | n.c. | No connection - electrically isolated; must remain unconnected per datasheet. |
| 7 | VCC | Controller supply input - powered after startup via auxiliary winding; regulated internally to 14.6 V typical. |
| 8 | GND | Controller ground reference - separate from power ground; requires low-inductance layout to minimize noise coupling into CS path. |
Key Features
| Feature | Design Value |
|---|---|
| Active Burst Mode | Enables immediate load-step response with <1% output ripple at light load - avoids blackouts during burst transitions unlike traditional skip-cycle modes. |
| Adjustable Blanking Window | Configurable via external RC on SoftS pin - suppresses false triggering during high di/dt events like output short recovery or cold start. |
| Integrated 650V Startup Cell | Eliminates external HV resistor network - reduces no-load power loss by ~30 mW and improves reliability over discrete solutions. |
| Precise Peak Current Limit | ±5% tolerance over temperature - permits smaller transformer margin and tighter secondary diode derating without compromising safety limits. |
| Isolation-Optimized DIP-8 Layout | Reinforced creepage (>4 mm) between Drain and GND/FB/CS - meets IEC 60950-1 basic insulation requirements without slotting or spacing modifications. |
Applications
| USB-C Wall Adapter | Industrial Auxiliary Supply |
|---|---|
Use Scenario: Compact 20–30W USB-C PD adapter operating from universal AC input (85–265 VAC) with tight size constraints and strict no-load power requirements. IC Role / Device Role / Timing Role: Primary-side PWM controller and power switch - performs current-mode regulation, soft-start, and protection in flyback topology. Use Value: Integrated CoolMOS™ and Active Burst Mode achieve <100 mW standby power and eliminate external HV components, reducing board area by ≥15% versus discrete controller + MOSFET solutions. | Use Scenario: 24 V/1 A auxiliary supply powering PLC I/O modules and sensor interfaces in factory automation cabinets. IC Role / Device Role / Timing Role: Isolated flyback controller with reinforced creepage - manages primary-side regulation and fault recovery in harsh industrial environments. Use Value: Dual Drain pins and DIP-8 isolation enable ≥4 mm creepage without PCB slotting; Auto Restart protection ensures continuous operation after transient overloads without manual reset. |
| Smart Home Hub Power | LED Driver Auxiliary Rail |
Use Scenario: Low-profile 12 V/1.5 A power supply for Wi-Fi/Zigbee hubs requiring silent operation, low EMI, and zero audible noise at light load. IC Role / Device Role / Timing Role: Fixed-frequency current-mode controller with soft driving - shapes gate drive slew rate to reduce EMI without snubbers. Use Value: Internal soft-driving and Leading Edge Blanking lower radiated emissions by ≥6 dBµV in 30–100 MHz band, easing FCC Part 15 Class B certification. | Use Scenario: 15 V/0.5 A auxiliary bias supply for constant-current LED driver ICs in commercial lighting fixtures. IC Role / Device Role / Timing Role: Secondary-side referenced controller with opto-coupled feedback - maintains tight output regulation despite wide LED string voltage variation. Use Value: Precise ±5% current limit tolerance allows optimized transformer turns ratio, reducing copper loss by ~12% and improving thermal margin at full load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar off-line flyback controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICE3B1065J | Same silicon die, PG-DIP-8 package, but without lead-free plating (SnPb); RoHS non-compliant. | Restricted to legacy industrial programs where Pb exemption applies; not suitable for consumer markets. | Select only if SnPb assembly process is mandated and lifecycle support for Pb-based materials is guaranteed. |
| ICE3B1565FKLA1 | Higher power rating (42W vs 32W), lower RDS(on) (1.70 Ω vs 2.95 Ω), same 67kHz frequency and pinout. | Supports higher output power without redesign; requires re-evaluation of transformer saturation margin and heatsink requirements. | Choose when scaling output power beyond 32W while retaining identical control features and layout compatibility. |
Compared with ICE3B1065J, the FKLA1 variant offers RoHS compliance and Pb-free plating essential for global consumer shipments; versus ICE3B1565FKLA1, it trades 10W power headroom for tighter thermal design and lower cost in sub-32W applications.
Availability
ICE3B1065FKLA1 is available at Aetrix Electronics and suitable for USB-C wall adapters, industrial auxiliary supplies, smart home hub power systems, and LED driver auxiliary rails requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for ICE3B1065FKLA1 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™-F3 product line targets cost-sensitive, high-efficiency off-line SMPS designs - integrating HV power switches and controllers to minimize external components while maintaining robust protection and regulatory compliance.
FAQ
What is the maximum continuous input power supported by ICE3B1065FKLA1 at 230VAC?
The ICE3B1065FKLA1 supports up to 32W continuous input power at 230VAC ±15% under open-frame conditions (Ta = 75°C, Tj = 125°C, no heatsink). This rating assumes proper PCB copper area for thermal dissipation and accounts for both CoolMOS™ conduction loss and controller quiescent consumption.
Does ICE3B1065FKLA1 require an external startup resistor?
No - ICE3B1065FKLA1 integrates a 650V startup cell that draws current directly from the rectified AC line through the internal depletion CoolMOS™, eliminating the need for an external high-voltage startup resistor and associated power loss.
How does the adjustable blanking window function in ICE3B1065FKLA1?
The blanking window is configured via an external RC network on the SoftS pin; it disables current-sense comparison for a user-defined duration after each switching cycle to prevent false overcurrent triggering during transformer leakage spikes or output short-circuit recovery events.
Can ICE3B1065FKLA1 be used in continuous conduction mode (CCM) flyback designs?
Yes - though optimized for discontinuous conduction mode (DCM), its 72% max duty cycle and precise current sensing allow CCM operation with appropriate transformer design; however, slope compensation must be added externally to maintain stability in CCM due to inherent right-half-plane zero.
ICE3B1065FKLA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- CoolMOS™, CoolSET™F3
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Isolation:
- Isolated
- Internal Switch(s):
- Yes
- Voltage - Breakdown:
- 650V
- Topology:
- Flyback
- Voltage - Start Up:
- 15 V
- Voltage - Supply (Vcc/Vdd):
- 8.5V ~ 21V
- Duty Cycle:
- 72%
- Frequency - Switching:
- 67kHz
- Power (Watts):
- 32 W
- Fault Protection:
- Current Limiting, Open Loop, Over Load, Over Temperature, Over Voltage
- Control Features:
- Soft Start
- Operating Temperature:
- -25°C ~ 130°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- PG-DIP-8
- Mounting Type:
- Through Hole
ICE3B1065FKLA1 FAQ
1.How can I place an order for ICE3B1065FKLA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ICE3B1065FKLA1 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 ICE3B1065FKLA1 reliable?
The price and inventory of ICE3B1065FKLA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE3B1065FKLA1 is usually 5 days.
3.What payment methods are accepted for ICE3B1065FKLA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE3B1065FKLA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICE3B1065FKLA1?
ICE3B1065FKLA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICE3B1065FKLA1 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 ICE3B1065FKLA1?
For technical support, including ICE3B1065FKLA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE3B1065FKLA1 requirements.
6.How does Aetrix verify that ICE3B1065FKLA1 is sourced from the original manufacturer or authorized distributors?
All ICE3B1065FKLA1 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 ICE3B1065FKLA1 meets industry standards.
7.What is the process for return or replacement of ICE3B1065FKLA1?
All ICE3B1065FKLA1 units undergo pre-shipment inspection (PSI). If there is an issue with ICE3B1065FKLA1, 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 ICE3B1065FKLA1 part is unused and in its original packaging.
Return procedure for ICE3B1065FKLA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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