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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > AC DC Converters, Offline Switches

Infineon Technologies ICE2BS01

Name: ICE2BS01
Brand: Infineon Technologies
SKU: ICE2BS01
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE2BS01

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: ICE2BS01.pdf

Description:: IC OFFLINE SWITCH FLYBACK 8DIP

Quantity:: RFQ Add To RFQ list

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Inventory:2,523

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Product details

Overview

ICE2BS01 from Infineon Technologies is a fixed-frequency, current-mode PWM controller IC for off-line SMPS applications, featuring 67 kHz switching frequency, 72% max duty cycle, internal leading-edge blanking (200 ns), ±5% peak current limit tolerance, and integrated soft-start and auto-restart protection. It operates from 8.5–21 V_VCC, supports 85–270 V_AC input, and enables low-standby-power designs compliant with Blue Angel requirements.

For engineers reviewing the ICE2BS01 datasheet, ICE2BS01 pinout, ICE2BS01 application, or ICE2BS01 equivalent, this controller is selected for cost-sensitive, low-power AC/DC adapters, auxiliary supplies in industrial power systems, and standby power stages where precise current limiting, audible-noise-free frequency reduction (to 20 kHz), and latch-free fault recovery are critical design requirements.

Technical Context

This IC implements an enhanced current-mode control architecture with dual-slope compensation: under normal load, regulation uses the amplified primary current ramp (gain = 3.65) compared to FB voltage; under light load, a superimposed voltage ramp-generated by T2, R1, and C1-ensures stable zero-duty-cycle operation down to 0.3 V FB threshold. The oscillator integrates frequency reduction logic that caps standby frequency at 20 kHz (typ.) to avoid audible noise.

Its protection unit combines undervoltage lockout (13.5 V turn-on / 8.5 V turn-off hysteresis), latched thermal shutdown (>140 °C), open-loop/overvoltage/auto-restart behavior, and overcurrent detection via Isense with propagation delay compensation. Gate drive capability targets discrete MOSFETs with soft-slew-rate control to reduce EMI.

Key Specifications

Parameter	Value and Actual Design Meaning
Switching Frequency	67 kHz nominal; reduces to 20 kHz in standby to suppress audible noise and minimize no-load losses.
Max Duty Cycle	72%; limits transformer reset time and prevents core saturation in discontinuous conduction mode.
Current Limit Tolerance	±5% overall; enables accurate sizing of RSense and secondary diode, reducing BOM cost and thermal margin.
V_CC Operating Range	8.5 V to 21 V; includes 13.5 V UVLO turn-on with 5 V hysteresis for reliable startup from bulk capacitor.
Leading Edge Blanking	200 ns; suppresses switch-node ringing-induced false overcurrent trips during MOSFET turn-on.
Soft-Start Duration	Externally adjustable via C_SoftS; ensures controlled output voltage ramp and prevents inrush current stress.
Thermal Shutdown	Latched shutdown above 140 °C junction temperature; requires power cycle to resume operation.

Pinout & Package

ICE2BS01 is housed in an 8-pin PG-DIP-8 (plastic dual in-line package) with 2.54 mm pitch, RoHS-compliant lead finish, and creepage/clearance optimized for 270 V_AC mains isolation.

Pin/Terminal	Circuit Role	Design Meaning
1, 8	N.C.	No internal connection; left unconnected per datasheet to ensure signal integrity and thermal stability.
2	SoftS	Soft-start timing capacitor node and auto-restart control input; voltage ramp initiates PWM enable and resets on fault.
3	FB	Feedback input referenced to GND; accepts optocoupler-derived voltage (0.3–4.0 V range) for secondary-side regulation.
4	Isense	Current sense input with 200 ns blanking; monitors source voltage across external RSense for cycle-by-cycle peak current limiting.
5	Gate	CMOS-compatible gate driver output; delivers sufficient peak current to directly drive medium-voltage MOSFETs with soft slew rate.
6	VCC	Primary-side supply input; powers internal bias, reference, and logic; clamped at 16.5 V during startup for overvoltage safety.
7	GND	Primary-side ground reference; serves as return path for Isense, FB pull-up, and gate driver sink current.

Key Features

Feature	Design Value
Adjustable peak current limit	Set externally via RSense; enables precise MOSFET SOA compliance and transformer optimization for each design.
Frequency reduction in standby	Automatically lowers switching frequency to 20 kHz (typ.) to meet <30 mW no-load power targets without audible whine.
Auto-restart protection suite	Integrated response to overload, open-loop, overvoltage, and thermal faults-no external timer or latch required.
Low EMI gate drive	Soft-slew-rate output minimizes dV/dt-induced noise and reduces need for snubber components in flyback layouts.
Pb-free & RoHS-compliant	PG-DIP-8 package meets EU RoHS Directive 2011/65/EU; compatible with standard lead-free reflow profiles.

Applications

AC/DC Adapter Power Supply

Industrial Auxiliary Power Rail

Use Scenario: 5–12 W universal-input (85–270 V_AC) wall adapter powering IoT sensors and smart home controllers.

IC Role / Device Role / Timing Role: Primary-side PWM controller implementing current-mode feedback, soft-start, and auto-restart for isolated flyback topology.

Use Value: Achieves <30 mW no-load consumption and ±5% output regulation across line/load variations without secondary-side sensing.

Use Scenario: 15 W auxiliary supply in PLC I/O modules, providing isolated 5 V/3.3 V rails for microcontrollers and interface ICs.

IC Role / Device Role / Timing Role: Off-line SMPS controller managing transformer reset, current limiting, and thermal fault handling in harsh environments.

Use Value: Enables compact transformer design via precise ±5% current limit and eliminates external protection ICs through integrated latched thermal shutdown.

Blue Angel–Compliant Standby Supply

White-Goods Control Board Power

Use Scenario: Standby power stage in energy-efficient refrigerators and washing machines meeting German Blue Angel certification.

IC Role / Device Role / Timing Role: Low-power PWM controller operating in frequency-reduced mode (20 kHz) during standby to minimize idle losses.

Use Value: Delivers certified <20 mW no-load power while maintaining fast wake-up response and stable 12 V output under dynamic load steps.

Use Scenario: Main control board power supply in air conditioners and dishwashers, powering MCU, display, and relay drivers.

IC Role / Device Role / Timing Role: Robust current-mode controller with open-loop and overvoltage protection to prevent damage during motor startup surges.

Use Value: Ensures system reliability via auto-restart behavior after short-circuit events and eliminates need for external crowbar circuits.

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
ICE2AS01	100 kHz fixed frequency; higher switching loss but allows smaller transformer and filter components.	Better suited for space-constrained adapters requiring tighter output regulation at full load.	Select when size reduction outweighs no-load power penalty; verify thermal derating at 100 kHz.
UC3842B	Variable frequency (oscillator RC-set); no integrated frequency reduction, no latched thermal shutdown, ±7% current limit tolerance.	Requires external circuitry for standby optimization and thermal protection; broader legacy support.	Choose only for cost-sensitive, non-certified designs where Blue Angel or low-noise operation is not required.

Compared with ICE2AS01 and UC3842B, ICE2BS01 uniquely balances ultra-low standby power (via 20 kHz frequency reduction), tight ±5% current limit accuracy, and fully integrated auto-restart-making it optimal for certified, noise-sensitive, and thermally constrained applications where component count and long-term reliability are prioritized.

Availability

ICE2BS01 is available at Aetrix Electronics and suitable for AC/DC adapter power supplies, industrial auxiliary power rails, and Blue Angel–compliant standby supplies requiring stable component supply, long-lifecycle availability, and RoHS-compliant sourcing.

Supply support for ICE2BS01 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 certifications including CECC approval.

ICE2BS01 belongs to Infineon's CoolSET™ family of integrated SMPS controllers, designed specifically for high-efficiency, low-standby-power off-line converters targeting energy-efficient consumer and industrial power supplies.

FAQ

What is the minimum recommended value for the soft-start capacitor (C_SoftS)?

The soft-start capacitor is externally connected between SoftS pin and GND. Datasheet Figure 10 shows typical values from 10 nF to 100 nF; 47 nF is commonly used to achieve ~100 ms ramp time. Lower values reduce startup time but increase inrush stress; values below 10 nF risk unstable soft-start behavior due to internal comparator thresholds.

Can ICE2BS01 drive a 650 V MOSFET directly without a gate driver IC?

Yes-ICE2BS01's Gate pin delivers up to 1 A peak sink/source current with soft-slew-rate control, sufficient to drive common 650 V/1 A MOSFETs (e.g., IPD65R280CE) in flyback topologies up to 15 W. For >20 W or faster switching, an external driver is recommended to maintain gate charge control and reduce switching losses.

How does the auto-restart mode behave during sustained overload?

Upon overload detection (e.g., shorted secondary), ICE2BS01 enters auto-restart mode: the internal error latch disables Gate output, SoftS discharges, then after ~1 s (determined by internal timer and C_SoftS), the IC attempts restart. This cycle repeats until fault clears-no manual reset or external circuitry is needed.

Is the 200 ns leading edge blanking adjustable or fixed?

The 200 ns leading edge blanking is fixed and internally generated-it cannot be adjusted externally. It is applied automatically to the Isense signal path before the current-limit comparator, ensuring consistent rejection of turn-on spikes regardless of RSense value or PCB layout parasitics.

ICE2BS01 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 8-DIP (0.300", 7.62mm)

Packaging:: Tube

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-DIP-8

Mounting Type:: Through Hole

ICE2BS01 FAQ

1.How can I place an order for ICE2BS01 through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE2BS01 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 ICE2BS01 reliable?

The price and inventory of ICE2BS01 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE2BS01 is usually 5 days.

3.What payment methods are accepted for ICE2BS01?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE2BS01 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE2BS01?

ICE2BS01 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE2BS01 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 ICE2BS01?

For technical support, including ICE2BS01 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE2BS01 requirements.

6.How does Aetrix verify that ICE2BS01 is sourced from the original manufacturer or authorized distributors?

All ICE2BS01 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 ICE2BS01 meets industry standards.

7.What is the process for return or replacement of ICE2BS01?

All ICE2BS01 units undergo pre-shipment inspection (PSI). If there is an issue with ICE2BS01, 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 ICE2BS01 part is unused and in its original packaging.

Return procedure for ICE2BS01:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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