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

Infineon Technologies ICE5BR4780BZXKLA1

Name: ICE5BR4780BZXKLA1
Brand: Infineon Technologies
SKU: ICE5BR4780BZXKLA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE5BR4780BZXKLA1

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

Package:: 8-DIP (0.300", 7.62mm), 7 Leads

Datasheet:: ICE5BR4780BZXKLA1.pdf

Description:: COOLSET (INCL. GEN5) PG-DIP-7

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ICE5BR4780BZXKLA1 from Infineon is a fixed-frequency 800 V CoolSET™ integrated power IC combining a PWM controller and avalanche-rugged CoolMOS™ in a single PG-DIP-7 package, supporting DCM/CCM flyback and non-isolated buck topologies with 65 kHz switching frequency, 4.13 Ω R_DS(on), and integrated error amplifier for direct feedback. It delivers up to 27.5 W output in 220 V AC ±20% flyback designs and enables ultra-low standby power via selectable Active Burst Mode.

For engineers reviewing the ICE5BR4780BZXKLA1 datasheet, ICE5BR4780BZXKLA1 pinout, ICE5BR4780BZXKLA1 application, or ICE5BR4780BZXKLA1 equivalent, key selection criteria include its cascode-based fast startup, digital frequency reduction for light-load efficiency, built-in slope compensation, auto-restart protections, and VERR-pin-enabled non-isolated feedback architecture.

Technical Context

The ICE5BR4780BZXKLA1 implements peak current-mode control with programmable slope compensation and cycle-by-cycle current limiting, operating across 10.0–25.5 V V_CC with digital soft start and frequency jittering for EMI suppression. Its dual-die PG-DIP-7 package integrates a dedicated controller die and an 800 V CoolMOS™ power switch sharing thermal and electrical domains.

It supports both isolated (TL431 + optocoupler) and non-isolated configurations via VERR pin routing-grounded for isolation, connected to feedback network for buck/flyback without optocoupler. Protection suite includes line overvoltage (CZ only), V_CC OVP/UVP, overload, open-loop, overtemperature, and V_CC-to-GND short-current limiting-all in auto-restart mode.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	800 V - Enables direct rectified AC input handling up to 300 V AC without external HV MOSFET.
Switching Frequency	65 kHz - Fixed frequency optimized for EMI filtering and transformer size in auxiliary SMPS.
R_DS(on)	4.13 Ω - Defines conduction loss and max output power (27.5 W at 220 V AC ±20% in DCM).
V_CC Range	10.0–25.5 V - Supports wide auxiliary supply range; enables operation during brownout and startup precharge.
Active Burst Mode	Selectably enabled - Reduces standby power with controllable output ripple; entry/exit thresholds configurable via external resistors.
Error Amplifier	Integrated transconductance amplifier on VERR pin - Eliminates TL431/optocoupler in non-isolated buck/flyback, reducing BOM count and loop latency.
Protections	V_CC OVP/UVP, overload, open-loop, OTP, V_CC-to-GND short limit - All auto-restart; no latch-off required for field reliability.

Pinout & Package

ICE5BR4780BZXKLA1 is housed in a PG-DIP-7 (7-pin plastic dual in-line package) with creepage/clearance compliant for reinforced insulation in 300 V AC mains-connected auxiliary supplies. Pin 1 is VERR (error amp input), Pin 2 is GND, Pin 3 is FB (feedback node for isolated designs), Pin 4 is CS (current sense), Pin 5 is V_CC, Pin 6 is GATE (drives CoolMOS™ source), Pin 7 is DRAIN (HV CoolMOS™ drain terminal).

Pin/Terminal	Circuit Role	Design Meaning
1 - VERR	Error amplifier input	Direct connection point for feedback voltage in non-isolated topologies; must be grounded for isolated operation.
2 - GND	Signal and power ground reference	Common return for controller logic, gate drive, and current sense; separate from CoolMOS™ source (source-connected internally to GATE).
3 - FB	Feedback input (isolated mode)	Accepts optocoupler output for primary-side regulation in isolated flyback; unused in non-isolated mode.
4 - CS	Current sense input	Monitors peak primary current via sense resistor; includes leading-edge blanking (100 ns) and propagation delay compensation.
5 - V_CC	IC supply voltage	Powered by auxiliary winding; internal UVLO (10.0 V) and OVP (25.5 V); limited charging current protects against V_CC-to-GND shorts.
6 - GATE	Gate driver output	Drives CoolMOS™ source terminal; soft gate driving reduces EMI and dV/dt stress.
7 - DRAIN	High-voltage power switch drain	Connects to rectified AC bus; rated for 800 V avalanche ruggedness; requires minimum copper area per JEDEC for thermal derating.

Key Features

Feature	Design Value
Cascode configuration	Enables sub-100 ms startup time by precharging V_CC through high-side CoolMOS™ path, eliminating external startup resistor.
Digital frequency reduction	Reduces switching frequency below 50% load while maintaining regulation, improving light-load efficiency without audible noise.
Integrated error amplifier	Transconductance amplifier on VERR pin allows direct secondary-side feedback in buck/non-isolated flyback, removing optocoupler latency and cost.
Comprehensive auto-restart protection	All faults (OTP, OLP, V_CC UVP/OVP, open-loop) trigger safe auto-restart-not latch-off-ensuring recovery after transient faults in consumer appliances.
EMI-optimized gate drive	Soft switching + frequency jitter + slope-compensated current mode control collectively reduce conducted and radiated emissions in Class B EMI-compliant designs.

Applications

Auxiliary Power Supply for Smart Meters

Non-Isolated Buck Converter for Appliance Control Boards

Use Scenario: Provides regulated 15 V/450 mA auxiliary power from 85–265 V AC mains in smart electricity meters with sealed enclosures and no cooling fans.

IC Role / Device Role / Timing Role: Primary-side flyback controller + integrated 800 V power switch; operates in DCM with selectable ABM for <300 mW standby consumption.

Use Value: Eliminates external HV MOSFET and startup circuitry; meets IEC 62053-21 surge immunity with 800 V avalanche rating.

Use Scenario: Generates 15 V bias for microcontroller, display, and sensor interfaces in washing machine main control boards where isolation is unnecessary.

IC Role / Device Role / Timing Role: Non-isolated buck controller using integrated error amplifier (VERR pin) and internal slope compensation for stable 65 kHz operation.

Use Value: Reduces component count by 4 parts (TL431, optocoupler, two resistors) versus isolated solution; achieves 85% efficiency at 300 mA load.

Standby Power Supply for LCD Monitors

Low-Power Flyback for Set-Top Box USB Ports

Use Scenario: Powers MCU, IR receiver, and memory in LCD monitor standby mode with <150 mW consumption and fast wake-up response.

IC Role / Device Role / Timing Role: Fixed-frequency flyback controller with digital Active Burst Mode; entry/exit thresholds set via external resistor divider on RSel pin.

Use Value: Achieves <100 mVpp output ripple during burst mode via precise threshold control-critical for low-noise MCU operation.

Use Scenario: Delivers 5 V/1 A USB charging rail from 85–300 V AC input in compact set-top box designs with tight PCB space constraints.

IC Role / Device Role / Timing Role: CCM-capable flyback controller with 2.13 Ω R_DS(on) variant preferred, but ICE5BR4780BZXKLA1 used for cost-sensitive 500 mA implementations.

Use Value: Leverages built-in overload and open-loop protection to prevent USB port damage during cable short events without external crowbar circuitry.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-frequency CoolSET™ applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICE5BR3995BZXKLA1	950 V V_DS, same 65 kHz, lower R_DS(on) (3.46 Ω)	Higher output power (30 W vs. 27.5 W) and better efficiency at universal AC input (85–300 V AC)	Select when designing for global mains compatibility or higher power density; requires same PCB layout but tighter V_CC stability due to higher gate charge.
ICE5AR2280CZXKLA1	800 V V_DS, 100 kHz, lower R_DS(on) (2.13 Ω), CZ version with line overvoltage protection	Supports line OVP (up to 450 V DC) and higher switching frequency for smaller magnetics; not pin-compatible (different FB/VER logic)	Choose for designs requiring line surge protection or compact transformer size; requires redesign of feedback network and V_CC snubber.

Compared with ICE5BR3995BZXKLA1 and ICE5AR2280CZXKLA1, ICE5BR4780BZXKLA1 offers optimal balance of cost, 800 V robustness, and simplicity for regional 220–240 V AC auxiliary supplies-avoiding over-specification while retaining full protection and ABM flexibility.

Availability

ICE5BR4780BZXKLA1 is available at Aetrix Electronics and suitable for auxiliary power supplies in home appliances, smart metering, and LCD/LED monitors requiring stable component supply, long-term lifecycle support, and JEDEC-qualified industrial reliability.

Supply support for ICE5BR4780BZXKLA1 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 leadership in silicon carbide and CoolMOS™ technologies.

This part belongs to the fifth-generation CoolSET™ fixed-frequency integrated power IC product line, designed specifically for cost-sensitive, high-reliability auxiliary SMPS in white goods, consumer electronics, and smart infrastructure equipment.

FAQ

What is the maximum continuous output power achievable with ICE5BR4780BZXKLA1 in a 220 V AC ±20% flyback design?

The datasheet specifies 27.5 W maximum output power in DCM operation at 220 V AC ±20%, measured in an open-frame design at T_a = 50°C and T_j = 125°C using minimum drain-pin copper area on a 2 oz single-sided PCB. Actual power depends on transformer design, heatsinking, and ambient conditions; Infineon recommends derating by 20% for enclosed, fanless applications.

Can ICE5BR4780BZXKLA1 be used in non-isolated buck topology without optocoupler or TL431?

Yes. The integrated transconductance error amplifier connects to the VERR pin, enabling direct feedback from the buck output via resistor divider. In this configuration, the FB pin is left unconnected and VERR is tied to the feedback network-eliminating optocoupler latency and component count while maintaining ±3% regulation accuracy across line and load.

How does Active Burst Mode (ABM) operate, and how is entry/exit power level selected?

ABM reduces switching frequency and pulse density during light loads to minimize standby losses. Entry and exit thresholds are set via external resistor divider on the RSel pin, allowing precise control of the transition point between normal PWM and burst modes. Thresholds are referenced to internal bandgap voltage (1.25 V), enabling ripple-controlled burst behavior with typical output voltage deviation under ±100 mVpp.

Does ICE5BR4780BZXKLA1 include line overvoltage protection (LOVP)?

No. LOVP is only implemented in the CZ version (e.g., ICE5xRxxxxCZ). The BZ version-including ICE5BR4780BZXKLA1-omits LOVP circuitry and relies on external MOVs or clamping circuits for line surge protection. This simplifies design for regions with stable grid voltage (e.g., EU 230 V ±10%) and reduces system cost where LOVP is not mandated.

ICE5BR4780BZXKLA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolSET™

Package/Case:: 8-DIP (0.300", 7.62mm), 7 Leads

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Isolation:: Non-Isolated

Internal Switch(s):: Yes

Voltage - Breakdown:: 800V

Topology:: Buck, Flyback

Voltage - Start Up:: 16 V

Voltage - Supply (Vcc/Vdd):: 10V ~ 27V

Duty Cycle:: 75%

Frequency - Switching:: 65kHz

Power (Watts):: 27.5 W

Fault Protection:: Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit

Control Features:: Soft Start

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Supplier Device Package:: PG-DIP-7

Mounting Type:: Through Hole

ICE5BR4780BZXKLA1 FAQ

1.How can I place an order for ICE5BR4780BZXKLA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE5BR4780BZXKLA1 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 ICE5BR4780BZXKLA1 reliable?

The price and inventory of ICE5BR4780BZXKLA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE5BR4780BZXKLA1 is usually 5 days.

3.What payment methods are accepted for ICE5BR4780BZXKLA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE5BR4780BZXKLA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE5BR4780BZXKLA1?

ICE5BR4780BZXKLA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE5BR4780BZXKLA1 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 ICE5BR4780BZXKLA1?

For technical support, including ICE5BR4780BZXKLA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE5BR4780BZXKLA1 requirements.

6.How does Aetrix verify that ICE5BR4780BZXKLA1 is sourced from the original manufacturer or authorized distributors?

All ICE5BR4780BZXKLA1 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 ICE5BR4780BZXKLA1 meets industry standards.

7.What is the process for return or replacement of ICE5BR4780BZXKLA1?

All ICE5BR4780BZXKLA1 units undergo pre-shipment inspection (PSI). If there is an issue with ICE5BR4780BZXKLA1, 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 ICE5BR4780BZXKLA1 part is unused and in its original packaging.

Return procedure for ICE5BR4780BZXKLA1:

1.Submit a request within 90 days.

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

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