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Infineon Technologies ICE3BS02G
- Part No.:
- ICE3BS02G
- Manufacturer:
- Infineon Technologies
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICE3BS02G.pdf
- Description:
- IC OFFLINE SWITCH FLYBACK 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:4,722
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Product details
Overview
ICE3BS02G from Infineon Technologies is a fixed-frequency (67 kHz), current-mode off-line SMPS controller with integrated 500 V startup cell, 72% max duty cycle, ±5% peak current limit tolerance, and active burst mode enabling <100 mW standby power in AC/DC adapters and auxiliary supplies.
For engineers reviewing the ICE3BS02G datasheet, ICE3BS02G pinout, ICE3BS02G application, or ICE3BS02G equivalent, key selection considerations include its PG-DSO-8 package, HV pin direct rectified-line connection, SoftS-adjustable blanking window for load-jump immunity, and Auto Restart Mode coverage of VCC over/undervoltage, overtemperature, and open-loop faults.
Technical Context
The ICE3BS02G implements a dedicated current-mode PWM architecture with internal oscillator set to 67 kHz, leading-edge blanking (220 ns), and propagation-delay compensation to maintain consistent power limiting across 85–270 VAC input ranges. Its control unit integrates active burst mode triggered by FB voltage decay under light load.
Startup relies on an internal 500 V high-voltage cell sourcing 1.05 mA into CVCC until VCC reaches 15 V, after which the cell disables-eliminating external startup resistors. Protection logic includes thermal shutdown (>140 °C), VCC UVLO (8.5 V turn-off), and auto-restart on overload or open-loop conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | Fixed 67 kHz - enables predictable EMI filtering and transformer design without external timing components. |
| Max Duty Cycle | 72% - sets upper bound on conduction time per cycle, directly constraining transformer turns ratio and MOSFET stress. |
| Peak Current Limit Tolerance | ±5% - ensures precise, repeatable overcurrent protection across temperature and process variation, reducing secondary diode/transformer oversizing. |
| VCC Operating Range | 8.5 V to 21 V - supports wide-range auxiliary supply designs while maintaining stable bias during brownout or transient events. |
| Standby Power | <100 mW at no load - achieved via Active Burst Mode with immediate load-jump response and <1% output ripple, meeting EU CoC Tier 2 requirements. |
| Startup Cell Voltage Rating | 500 V - allows direct connection to rectified universal AC input without external HV resistor, cutting BOM count and startup losses. |
| Leading Edge Blanking | 220 ns - suppresses switching-node noise-induced false triggering of current sense comparator during MOSFET turn-on. |
Pinout & Package
ICE3BS02G uses the PG-DSO-8 (SOIC-8) surface-mount package with exposed pad for thermal enhancement. Pin 6 is internally unconnected (N.C.) and must remain floating in PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SoftS) | Soft-start & blanking window control | External capacitor sets soft-start ramp time and disables overload detection during high-load transients to prevent false auto-restart. |
| 2 (FB) | Feedback input | Regulates output voltage via optocoupler; controls entry/exit from Active Burst Mode based on feedback signal level. |
| 3 (CS) | Current sense input | Monitors source current of external MOSFET through sense resistor; triggers immediate gate turn-off at 0.85 V threshold. |
| 4 (Gate) | Driver output | Push-pull stage drives external N-channel MOSFET gate; rated for 0.72 duty cycle maximum conduction. |
| 5 (HV) | High-voltage startup input | Connects directly to rectified AC line; powers internal 500 V startup cell until VCC reaches 15 V, then disconnects automatically. |
| 6 (N.C.) | No connection | Internally unconnected; must be left floating-no trace or copper pour allowed. |
| 7 (VCC) | Controller supply | Accepts 8.5–21 V DC; powers internal bias, oscillator, and logic; monitored for UVLO/OVLO protection. |
| 8 (GND) | Signal ground reference | Common return for all analog and digital circuitry; requires low-impedance connection to power ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 500 V startup cell | Eliminates external HV startup resistor, reducing component count, board space, and no-load power loss. |
| Active Burst Mode | Maintains full regulation and immediate load-step response at light/no load, achieving <100 mW standby without output blackout. |
| Adjustable blanking window | Single external capacitor on SoftS pin simultaneously configures soft-start time and disables overload detection during fast load jumps. |
| Auto Restart Mode | System-level fault recovery for VCC over/undervoltage, overtemperature, open-loop, and overload-limits average power during failure. |
| Precision peak current limit | ±5% tolerance minimizes transformer and secondary diode derating, lowering cost and size in wide-input SMPS designs. |
Applications
| AC/DC Adapter | Industrial Auxiliary Supply |
|---|---|
Use Scenario: 12 V/2 A wall adapter for network routers operating across 85–270 VAC mains with strict no-load power limits. IC Role / Device Role / Timing Role: Primary-side current-mode PWM controller managing transformer duty cycle, startup, and burst-mode transitions via FB and CS signals. Use Value: Achieves <95 mW no-load consumption and passes IEC 62301 Class D, eliminating need for external startup resistor or RC filter in feedback path. | Use Scenario: 5 V/1 A isolated auxiliary rail powering PLC I/O modules in factory automation systems with 24/7 operation. IC Role / Device Role / Timing Role: Off-line controller providing regulated bias for downstream logic, with thermal and open-loop protection ensuring long-term reliability. Use Value: Auto Restart Mode prevents catastrophic failure during sustained overtemperature or sensor-open faults, enabling safe graceful degradation. |
| Set-Top Box Power Supply | LED Driver Auxiliary Stage |
Use Scenario: Dual-output (12 V + 3.3 V) flyback supply in cable TV set-top boxes requiring low standby power and fast wake-up response. IC Role / Device Role / Timing Role: Main controller executing current-mode regulation, active burst modulation, and precise peak-current limiting on primary switch. Use Value: 220 ns leading-edge blanking prevents false current-limit trips during MOSFET turn-on spikes, improving light-load stability. | Use Scenario: Isolated 15 V auxiliary supply for LED driver IC bias in outdoor streetlight systems exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Fixed-frequency (67 kHz) SMPS controller delivering stable VCC to LED driver IC under brownout and surge conditions. Use Value: Propagation-delay compensation maintains consistent power limit across 85–270 VAC input, avoiding transformer oversizing for worst-case line. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar off-line current-mode controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICE3AS02G | 100 kHz switching frequency, identical pinout and feature set except oscillator frequency and associated timing constants. | Suitable for higher-power or lower-ripple designs where smaller magnetics and faster transient response are prioritized. | Select ICE3AS02G when transformer size reduction or tighter output regulation under dynamic load is required. |
| UC3842BD1G | 8-pin SOIC, 250 kHz max frequency, no integrated HV startup cell, requires external startup resistor and separate VCC supply. | Used in cost-sensitive, non-RoHS or legacy designs where standby power >300 mW is acceptable and BOM flexibility is valued. | Choose UC3842BD1G only if existing design uses discrete startup and no regulatory standby targets apply. |
Compared with ICE3AS02G, ICE3BS02G trades higher switching loss for lower EMI and relaxed magnetics design; versus UC3842BD1G, it delivers integrated HV startup and burst-mode efficiency but requires tighter layout for PG-DSO-8 thermal management.
Availability
ICE3BS02G is available at Aetrix Electronics and suitable for AC/DC adapters, industrial auxiliary supplies, and set-top box power supplies requiring stable component supply, RoHS compliance, and guaranteed lifecycle support through 2030.
Supply support for ICE3BS02G 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 manufacturing and quality certification to ISO 9001 and IATF 16949.
The F3 series-including ICE3BS02G-is designed specifically for energy-efficient, low-standby-power off-line SMPS in consumer and industrial power supplies, emphasizing integration, protection robustness, and regulatory compliance.
FAQ
What is the purpose of the N.C. pin (Pin 6) on ICE3BS02G?
Pin 6 is internally not connected and serves no electrical function. It must remain unconnected on the PCB-no trace, pad, or copper pour should contact it. This pin exists for mechanical compatibility with other devices in the PG-DSO-8 family and does not affect operation or thermal performance.
How does the integrated 500 V startup cell eliminate the external startup resistor?
The internal 500 V startup cell draws 1.05 mA from the HV pin to charge the external CVCC capacitor. Once VCC reaches 15 V, the cell automatically disables, removing the continuous HV leakage path. This eliminates the power loss and heat generation of a discrete high-voltage resistor, improving no-load efficiency.
Can ICE3BS02G operate without an optocoupler in the feedback loop?
No-ICE3BS02G requires an optocoupler-connected FB pin for closed-loop regulation and Active Burst Mode control. The FB input directly modulates both PWM duty cycle and burst-enable threshold; open-loop operation results in unregulated output and automatic entry into Auto Restart Mode due to feedback loss.
What is the minimum recommended value for the SoftS capacitor?
The SoftS capacitor must be ≥100 nF to ensure reliable soft-start timing and blanking window duration. Smaller values risk premature exit from soft-start or insufficient blanking during load jumps, potentially triggering false Auto Restart events. Typical values range from 100 nF to 470 nF depending on required start-up time and system transient immunity.
ICE3BS02G 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:
- 67kHz
- 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
ICE3BS02G FAQ
1.How can I place an order for ICE3BS02G through Aetrix?
Please submit a Request for Quotation (RFQ) for ICE3BS02G 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 ICE3BS02G reliable?
The price and inventory of ICE3BS02G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE3BS02G is usually 5 days.
3.What payment methods are accepted for ICE3BS02G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE3BS02G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICE3BS02G?
ICE3BS02G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICE3BS02G 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 ICE3BS02G?
For technical support, including ICE3BS02G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE3BS02G requirements.
6.How does Aetrix verify that ICE3BS02G is sourced from the original manufacturer or authorized distributors?
All ICE3BS02G 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 ICE3BS02G meets industry standards.
7.What is the process for return or replacement of ICE3BS02G?
All ICE3BS02G units undergo pre-shipment inspection (PSI). If there is an issue with ICE3BS02G, 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 ICE3BS02G part is unused and in its original packaging.
Return procedure for ICE3BS02G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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