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Infineon Technologies ICE3AS02G
- Part No.:
- ICE3AS02G
- Manufacturer:
- Infineon Technologies
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICE3AS02G.pdf
- Description:
- IC OFFLINE SWITCH FLYBACK 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:2,021
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ICE3AS02G from Infineon Technologies is a fixed-frequency 100 kHz off-line SMPS current-mode PWM controller with integrated 500 V high-voltage startup cell, ±5 % peak current limit tolerance, and active burst mode enabling <100 mW standby power in AC/DC adapters for TVs and monitors.
For engineers reviewing the ICE3AS02G datasheet, ICE3AS02G pinout, ICE3AS02G application, or ICE3AS02G equivalent, key selection considerations include its PG-DSO-8 package, HV pin direct rectified-line connection, SoftS-adjustable blanking window, and Auto Restart Mode coverage of VCC overvoltage, undervoltage, overtemperature, and open-loop faults.
Technical Context
The ICE3AS02G implements current-mode control using an internal PWM latch (FF1), leading-edge blanking (220 ns), and propagation-delay compensation to maintain stable power limiting across 85–270 VAC input. Its oscillator fixes fOSC at 100 kHz with ±5 % tolerance and supports duty cycle up to 72 %.
Control logic integrates Active Burst Mode triggered by FB voltage drop below 4.0 V, enabling immediate load-jump response without output blackout. Protection is enforced via Auto Restart Mode activated by thermal shutdown (>140 °C), VCC UVLO (8.5 V), VCC OVLO (15 V), CS overcurrent, or feedback open-loop conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 100 kHz fixed - enables compact transformer design and EMI filtering consistent with EN55022 Class B limits. |
| Startup Voltage Range | 500 V integrated HV cell - eliminates external startup resistor, reducing no-load losses and board space. |
| Current Limit Tolerance | ±5 % peak sensing - allows precise transformer and secondary diode sizing without overdesign margin. |
| Standby Power | <100 mW at no load - meets Energy Star 6.0 and EU CoC Tier 2 requirements for external power supplies. |
| VCC Operating Range | 8.5 V to 21 V - supports wide-range auxiliary winding regulation and robust brown-out recovery. |
| Duty Cycle Limit | 72 % maximum - ensures safe MOSFET conduction time under peak line and full-load conditions. |
| Blanking Window | Adjustable via SoftS capacitor - disables overload detection during transient load jumps to prevent false Auto Restart triggers. |
Pinout & Package
ICE3AS02G is housed in a RoHS-compliant PG-DSO-8 (SOIC-8) surface-mount package with exposed pad for thermal enhancement. Pin 6 is internally unconnected (N.C.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SoftS) | Soft-start & blanking control | External capacitor sets soft-start ramp time and adjustable blanking window duration for load-jump immunity. |
| 2 (FB) | Feedback input | Regulates output voltage via optocoupler; controls Active Burst Mode entry/exit and PWM duty cycle. |
| 3 (CS) | Current sense input | Monitors MOSFET source current through external shunt; triggers immediate gate turn-off at 0.85 V threshold. |
| 4 (Gate) | Driver output | Push-pull stage drives external PowerMOS gate directly; 0.72 duty cycle max ensures safe switching transitions. |
| 5 (HV) | High-voltage startup input | Connects to rectified DC bus; supplies 1.05 mA startup current until VCC reaches 15 V, then shuts down. |
| 6 (N.C.) | No connection | Internally unconnected; must remain floating per datasheet - no routing or PCB trace required. |
| 7 (VCC) | Controller supply | Powered by auxiliary winding; UVLO (8.5 V) and OVLO (15 V) ensure reliable start-up and fault-safe shutdown. |
| 8 (GND) | Power ground reference | Common return for internal bias, PWM comparator, and protection circuitry; requires low-inductance layout. |
Key Features
| Feature | Design Value |
|---|---|
| Active Burst Mode | Enables continuous regulation at light load with <1 % output ripple and immediate load-jump response - no output dropout or re-synchronization delay. |
| Integrated 500 V Startup Cell | Removes need for external high-voltage resistor, cutting no-load power loss by ~15 mW and simplifying primary-side BOM. |
| Auto Restart Protection | Covers five independent fault modes (VCC UV/OV, overtemperature, CS overcurrent, open-loop) - prevents thermal runaway and component stress during failure. |
| Precision Current Limiting | ±5 % tolerance with propagation-delay compensation ensures consistent power limiting across universal AC input range without transformer over-sizing. |
| Internal RC Filter | Integrates optocoupler post-filtering, eliminating external capacitor-resistor pair and improving transient stability in feedback path. |
Applications
| TV Power Supply | Monitor SMPS |
|---|---|
Use Scenario: 24–42 inch LCD/LED TV with dual-output (12 V/5 V) flyback converter operating from 85–270 VAC mains. IC Role / Device Role / Timing Role: Primary-side current-mode PWM controller managing regulation, burst-mode transition, and HV startup sequencing. Use Value: Achieves <90 mW no-load consumption and passes IEC 62301 Ed.2 standby power test without auxiliary winding optimization. | Use Scenario: 19–27 inch desktop monitor with single-output 19 V flyback supply requiring low EMI and fast dynamic response. IC Role / Device Role / Timing Role: Fixed 100 kHz current-mode controller providing precise duty-cycle control, leading-edge blanking, and soft-switching timing. Use Value: Reduces output voltage overshoot during 50 %–100 % load steps to <250 mV with 2 µs recovery, meeting VESA DPMS timing specs. |
| Laptop Adapter | Set-Top Box PSU |
Use Scenario: 65 W universal-input adapter with QR flyback topology and synchronous rectification on secondary side. IC Role / Device Role / Timing Role: Primary-side controller executing Active Burst Mode, VCC self-supply management, and CS-based cycle-by-cycle current limiting. Use Value: Enables 89 % average efficiency across 10–100 % load and satisfies DOE Level VI efficiency requirements at 10 % and 25 % load points. | Use Scenario: Low-profile STB power supply with 12 V/3.3 V outputs, operating continuously in living-room ambient temperatures up to 45 °C. IC Role / Device Role / Timing Role: Fault-tolerant controller implementing thermal shutdown, VCC UVLO hysteresis, and Auto Restart for long-term reliability. Use Value: Sustains 20,000-hour MTBF with zero field failures attributed to IC-level thermal or overvoltage stress in 12-month field deployment data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar off-line SMPS current-mode controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICE3BS02G | 67 kHz fixed frequency, identical pinout and protection features but lower switching frequency. | Better suited for higher-power designs (>85 W) where core loss reduction outweighs size penalty of larger magnetics. | Select when transformer EMI filtering or thermal derating at full load favors lower fOSC, not when compactness or high-light-load efficiency is critical. |
| UC3842BD1G | No integrated HV startup cell; requires external 500 kΩ–1 MΩ startup resistor; 250 kHz max frequency; no Active Burst Mode. | Used in cost-sensitive industrial PSUs where standby power >300 mW is acceptable and discrete startup is preferred. | Choose only if legacy design reuse or BOM consolidation with existing UCx84x platforms justifies added component count and higher no-load loss. |
Compared with ICE3BS02G and UC3842BD1G, ICE3AS02G uniquely delivers sub-100 mW standby power with zero external HV components and immediate load-jump recovery - making it optimal for consumer electronics requiring regulatory compliance and compact form factors.
Availability
ICE3AS02G is available at Aetrix Electronics and suitable for TV power supplies, monitor SMPS, and laptop adapters requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.
Supply support for ICE3AS02G 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 wafer fabrication infrastructure.
The ICE3 F3 series targets energy-efficient off-line SMPS designs, specifically engineered to eliminate external startup components and achieve ultra-low standby power without sacrificing transient performance or protection robustness.
FAQ
What is the purpose of the N.C. pin (Pin 6) on ICE3AS02G?
Pin 6 is internally unconnected and must remain floating on the PCB - no trace, pad, or component should be attached. This pin exists for mechanical compatibility with the PG-DIP-8 variant (where Pins 4 and 5 are shorted) and has no electrical function in the PG-DSO-8 package.
How does the integrated 500 V startup cell reduce no-load power consumption?
The startup cell draws only 1.05 mA from the HV pin until VCC reaches 15 V, then switches off completely. This eliminates continuous power dissipation from an external high-voltage resistor, typically saving 12–18 mW at no load compared to discrete startup solutions.
Can ICE3AS02G operate without an auxiliary winding for VCC supply?
No - the VCC pin must be powered by an auxiliary winding after startup. The integrated HV cell only provides initial charge current; sustained operation requires regulated VCC between 8.5 V and 21 V from the auxiliary supply, as confirmed in Section 3.2 of the datasheet.
What determines the blanking window duration in ICE3AS02G?
The blanking window is set by the external capacitor connected between SoftS (Pin 1) and GND. Its value directly defines both soft-start time and the duration during which overload detection is disabled - typical values range from 10 nF to 100 nF depending on system load-jump profile.
ICE3AS02G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- CoolSET®F3
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Isolation:
- Isolated
- Internal Switch(s):
- No
- Voltage - Breakdown:
- -
- Topology:
- Flyback
- Voltage - Start Up:
- 15 V
- Voltage - Supply (Vcc/Vdd):
- 8.5V ~ 21V
- Duty Cycle:
- 72%
- Frequency - Switching:
- 100kHz
- Power (Watts):
- -
- 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-DSO-8
- Mounting Type:
- Surface Mount
ICE3AS02G FAQ
1.How can I place an order for ICE3AS02G through Aetrix?
Please submit a Request for Quotation (RFQ) for ICE3AS02G 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 ICE3AS02G reliable?
The price and inventory of ICE3AS02G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE3AS02G is usually 5 days.
3.What payment methods are accepted for ICE3AS02G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE3AS02G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICE3AS02G?
ICE3AS02G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICE3AS02G 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 ICE3AS02G?
For technical support, including ICE3AS02G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE3AS02G requirements.
6.How does Aetrix verify that ICE3AS02G is sourced from the original manufacturer or authorized distributors?
All ICE3AS02G 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 ICE3AS02G meets industry standards.
7.What is the process for return or replacement of ICE3AS02G?
All ICE3AS02G units undergo pre-shipment inspection (PSI). If there is an issue with ICE3AS02G, 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 ICE3AS02G part is unused and in its original packaging.
Return procedure for ICE3AS02G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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