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Infineon Technologies ICE2BS01G
- Part No.:
- ICE2BS01G
- Manufacturer:
- Infineon Technologies
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICE2BS01G.pdf
- Description:
- IC OFFLINE SWITCH FLYBACK 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:3,790
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Product details
Overview
ICE2BS01G from Infineon Technologies is a fixed-frequency, current-mode PWM controller IC for off-line SMPS applications, featuring 67 kHz switching frequency, internal leading-edge blanking (200 ns), ±5% peak current limiting tolerance, and integrated soft-start with auto-restart protection. It operates from 85–270 VAC input via auxiliary winding-derived VCC and delivers gate drive for external MOSFETs in low-power standby AC/DC adapters.
For engineers reviewing the ICE2BS01G datasheet, ICE2BS01G pinout, ICE2BS01G application, or ICE2BS01G equivalent, this controller supports precise current-sense regulation, frequency reduction to 20 kHz in standby mode, undervoltage lockout (13.5 V turn-on / 8.5 V turn-off), latched thermal shutdown (>140 °C), and adjustable peak current limit via external Rsense - critical for Blue Angel-compliant low-standby-power designs.
Technical Context
This IC implements an enhanced current-mode control architecture where the duty cycle is determined by comparing the amplified, blanked current sense signal (gain = 3.65) against the optocoupler-derived feedback voltage (FB). A superimposed voltage ramp ensures stable regulation under light-load conditions when the primary current slope becomes insufficient.
The internal oscillator sets nominal frequency at 67 kHz (ICE2BS01G), reduced to 20 kHz in standby to minimize audible noise and power dissipation. Protection functions-including overload, open-loop, overvoltage, and thermal shutdown-are managed by a dedicated unit that forces auto-restart mode with controlled gating rather than latch-off.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 67 kHz nominal; reduces to 20 kHz in standby to meet <100 mW no-load power targets |
| Current Limit Tolerance | ±5% overall, enabling accurate transformer and secondary diode sizing for cost-optimized designs |
| VCC Operating Range | 8.5 V to 21 V; UVLO threshold at 13.5 V (turn-on) and 8.5 V (turn-off) prevents erratic startup |
| Leading Edge Blanking | 200 ns internal blanking on Isense pin eliminates switching noise false triggering of current limit |
| Max Duty Cycle | 72%, limiting conduction time to ensure safe operation with standard flyback transformer designs |
| Thermal Shutdown | Latched shutdown above 140 °C junction temperature, requiring power cycle to recover |
| Soft-Start Duration | Internally controlled ramp on SoftS pin ensures monotonic gate drive enablement, reducing inrush stress |
Pinout & Package
ICE2BS01G is housed in a RoHS-compliant PG-DSO-8 (SOIC-8) surface-mount package with exposed pad for thermal enhancement. Pin 1 and Pin 8 are not connected; functional pins occupy positions 2–7.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 2: SoftS | Soft-start timing & auto-restart control | Capacitor-connected node defining soft-start ramp slope and auto-restart timeout after fault detection |
| 3: FB | Feedback input | Receives optocoupler output voltage (typically 0.3–4.0 V) to regulate secondary-side output via primary-side current control |
| 4: Isense | Current sense input | Accepts voltage from source-resistor of external MOSFET; internal 200 ns blanking suppresses spike-induced false trips |
| 5: Gate | Driver output | Push-pull gate driver capable of directly driving standard 650 V MOSFETs with controlled slew rate for EMI reduction |
| 6: VCC | Supply input | Power rail derived from auxiliary winding; internal clamp disables driver above 16.5 V during startup |
| 7: GND | Primary-side ground reference | Common return for Isense, FB pull-up, and internal bias circuits; must be isolated from secondary ground |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 67 kHz oscillator with standby frequency reduction | Enables compliance with EU Blue Angel standby power limits (<100 mW) without external frequency programming |
| Adjustable peak current limit via external Rsense | Allows precise adaptation to MOSFET Rds(on), transformer turns ratio, and output power requirements |
| Integrated soft-start with auto-restart coordination | Prevents transformer saturation at startup and enables safe recovery from overloads without manual reset |
| Internal propagation delay compensation | Corrects timing mismatch between current sensing and PWM latch, improving current limit accuracy across line/load |
| Low quiescent current in inactive state | Max 55 µA supply current before VCC reaches UVLO threshold, minimizing no-load losses |
Applications
| AC/DC Adapter for Consumer Electronics | USB Charging Wall Adapter |
|---|---|
|
Use Scenario: 5 V / 2 A offline adapter powering smartphones and accessories from universal AC mains. IC Role / Device Role / Timing Role: Primary-side PWM controller regulating output via optocoupler feedback and sensing MOSFET source current. Use Value: 67 kHz switching enables compact transformer design; ±5% current limit tolerance allows consistent current foldback during short-circuit events. |
Use Scenario: Compact 10 W wall charger meeting IEC 61000-3-2 harmonic limits and Blue Angel standby criteria. IC Role / Device Role / Timing Role: Standby-optimized current-mode controller managing burst-mode operation below 20 kHz to eliminate audible noise. Use Value: Integrated frequency reduction to 20 kHz in no-load condition achieves <75 mW standby consumption without auxiliary circuitry. |
| Set-Top Box Power Supply | Smart Home Hub Auxiliary Supply |
|
Use Scenario: Dual-output (5 V / 12 V) flyback supply powering digital logic and RF modules in IPTV receivers. IC Role / Device Role / Timing Role: Primary-side controller implementing cross-regulation via dominant output feedback and current-mode stability. Use Value: Leading-edge blanking (200 ns) prevents false current-limit triggering from transformer leakage spikes, ensuring reliable multi-rail startup. |
Use Scenario: Low-profile 3.3 V / 1 A auxiliary supply for Wi-Fi/BLE SoCs in battery-less smart sensors and hubs. IC Role / Device Role / Timing Role: High-accuracy current-mode controller enabling tight output regulation despite wide input voltage range (85–270 VAC). Use Value: Internal 6.5 V bandgap reference and 4.8 V error amplifier threshold provide stable feedback loop performance across temperature and line variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar off-line current-mode PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICE2AS01G | 100 kHz fixed frequency; higher switching loss but smaller magnetics; identical pinout and protection features | Better suited for space-constrained 12–24 W adapters where transformer size dominates BOM cost | Select ICE2AS01G when target efficiency >85% at full load and physical size is critical; verify snubber design for higher dv/dt |
| UC3842BD1G | Voltage-mode control; no integrated frequency reduction or soft-start ramp; requires external components for UVLO and current sense filtering | Lacks auto-restart and standby optimization; used in legacy industrial supplies where cost-per-unit outweighs design time | Choose UC3842BD1G only for retrofit projects with existing voltage-mode schematics; expect +15% no-load power vs. ICE2BS01G |
Compared with ICE2AS01G, ICE2BS01G trades higher-frequency efficiency for lower standby consumption and better light-load regulation; versus UC3842BD1G, it delivers integrated protections and reduced external component count at the cost of fixed topology flexibility.
Availability
ICE2BS01G is available at Aetrix Electronics and suitable for AC/DC adapters, USB charging solutions, set-top box power supplies, and smart home auxiliary supplies requiring stable component supply, RoHS compliance, and long-term lifecycle support.
Supply support for ICE2BS01G 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 including CECC approval.
ICE2BS01G belongs to Infineon's CoolSET™ family of integrated SMPS controllers, designed specifically for high-efficiency, low-standby-power offline converters targeting energy-efficient consumer and industrial power supplies.
FAQ
What is the purpose of the SoftS pin, and how is it configured?
The SoftS pin serves dual functions: initiating soft-start at power-up and controlling auto-restart timing after fault detection. It requires an external capacitor (typically 100 nF) tied to GND; its voltage ramp determines both startup slew rate and restart interval. During normal operation, SoftS voltage is clamped at 5.3 V; during faults, it discharges through internal transistor T1 to trigger restart after a defined timeout.
How does ICE2BS01G achieve <100 mW standby power?
ICE2BS01G reduces switching frequency from 67 kHz to 20 kHz in standby mode, lowering core and switching losses. Combined with <55 µA quiescent current before VCC activation and optimized gate drive slew rate, this enables typical no-load consumption of 65–85 mW in properly designed flyback topologies with auxiliary winding regulation.
Can ICE2BS01G drive a 650 V Superjunction MOSFET directly?
Yes - the Gate pin provides push-pull drive with 1.5 A peak sink/source capability and controlled slew rate, sufficient to directly drive standard 650 V Superjunction MOSFETs (e.g., IPA60R190P7) without external buffer. Layout best practices require short, low-inductance traces and local 100 nF decoupling between Gate and GND.
What protection features are latched versus auto-restarting?
Thermal shutdown (>140 °C) is latched and requires full power cycle to clear. All other protections - overload, open-loop, overvoltage, and undervoltage - force auto-restart mode: the controller disables gate drive, waits for SoftS capacitor to discharge, then attempts soft-start recovery. This avoids permanent lockout during transient faults.
ICE2BS01G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- 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:
- 13.5 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:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- PG-DSO-8
- Mounting Type:
- Surface Mount
ICE2BS01G FAQ
1.How can I place an order for ICE2BS01G through Aetrix?
Please submit a Request for Quotation (RFQ) for ICE2BS01G 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 ICE2BS01G reliable?
The price and inventory of ICE2BS01G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE2BS01G is usually 5 days.
3.What payment methods are accepted for ICE2BS01G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE2BS01G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICE2BS01G?
ICE2BS01G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICE2BS01G 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 ICE2BS01G?
For technical support, including ICE2BS01G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE2BS01G requirements.
6.How does Aetrix verify that ICE2BS01G is sourced from the original manufacturer or authorized distributors?
All ICE2BS01G 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 ICE2BS01G meets industry standards.
7.What is the process for return or replacement of ICE2BS01G?
All ICE2BS01G units undergo pre-shipment inspection (PSI). If there is an issue with ICE2BS01G, 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 ICE2BS01G part is unused and in its original packaging.
Return procedure for ICE2BS01G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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