Infineon Technologies ICE5BR3995BZXKLA1

Overview

ICE5BR3995BZXKLA1 from Infineon Technologies is a fixed-frequency 950 V integrated power IC (CoolSET™) 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 digital frequency reduction, active burst mode, and built-in error amplifier. It delivers up to 30 W output in 220 V AC ±20% flyback designs and 550 mA in buck configurations, targeting auxiliary power supplies for TVs, smart meters, and white goods.

For engineers reviewing the ICE5BR3995BZXKLA1 datasheet, ICE5BR3995BZXKLA1 pinout, ICE5BR3995BZXKLA1 application, or ICE5BR3995BZXKLA1 equivalent, key selection criteria include its 950 V drain rating, 65 kHz switching frequency, 3.46 Ω R_DS(on), integrated error amplifier for direct feedback, and auto-restart protection suite covering VCC OVP/UVP, overload, open loop, overtemperature, and line overvoltage (CZ variant only).

Technical Context

The device implements peak current-mode control with slope compensation and cycle-by-cycle current limiting, using a cascode configuration for fast startup and low EMI via frequency jitter and soft gate driving. Its digital control unit manages active burst mode with selectable entry/exit thresholds and supports both isolated (TL431 + optocoupler) and non-isolated (integrated error amplifier) feedback paths.

Operating from 10.0 V to 25.5 V V_CC, it features propagation delay compensation, leading-edge blanking (100 ns), and thermal shutdown with hysteresis. The CoolMOS™ and controller are separate dies in one PG-DIP-7 package, with junction temperature sensing on the controller die only.

Key Specifications

Pinout & Package

ICE5BR3995BZXKLA1 is housed in a Pb-free, halogen-free PG-DIP-7 package (7-pin dual in-line plastic) with creepage/clearance compliant for reinforced insulation in industrial applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-frequency offline SMPS controller applications.

Compared with ICE5BR3995CZXKLA1, the BZ version omits LOVP for simpler BOM and layout; versus ICE5AR3995BZXKLA1, the 65 kHz operation lowers gate drive losses and eases EMI filter design while maintaining full 30 W capability.

Availability

ICE5BR3995BZXKLA1 is available at Aetrix Electronics and suitable for smart meter auxiliary supplies, TV standby power, and white goods control boards requiring stable component supply, long-term industrial qualification, and RoHS-compliant packaging.

Supply support for ICE5BR3995BZXKLA1 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 is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in high-voltage MOSFETs and integrated power stages.

This part belongs to the fifth-generation CoolSET™ fixed-frequency controller family, designed specifically for cost-sensitive, high-reliability auxiliary power supplies in consumer and industrial offline SMPS applications.

FAQ

What is the maximum continuous output power achievable with ICE5BR3995BZXKLA1 in a 220 V AC ±20% flyback design?

The datasheet specifies 30 W maximum output power in an open-frame design at T_a = 50°C and T_j = 125°C using minimum copper area on a 2 oz single-sided PCB. Real-world performance depends on transformer design, heatsinking, and layout; Infineon recommends derating by 15–20% for sealed enclosures or higher ambient temperatures.

Can ICE5BR3995BZXKLA1 operate in non-isolated buck topology without external error amplifiers?

Yes - it integrates a transconductance error amplifier connected to the VERR pin, enabling direct feedback from output voltage divider to VERR. For buck operation, tie VERR to GND, connect feedback resistor divider between output and FB, and route FB to the error amp inverting input per Figure 3 in the datasheet.

How does the Active Burst Mode (ABM) function differ between ICE5BR3995BZXKLA1 and the CZ variant?

Both share identical ABM logic and selectable entry/exit thresholds. The key difference is that the CZ version adds line overvoltage protection (LOVP) on the VIN pin, which is absent in the BZ version. ABM behavior itself - including burst frequency, pulse width, and ripple control - is identical across BZ and CZ variants.

What thermal considerations apply to the CoolMOS™ and controller dies inside the PG-DIP-7 package?

Thermal protection senses only the controller die junction temperature (T_j,ctrl); the CoolMOS™ die has no dedicated thermal sensor. Both dies share the DRAIN pin as the primary thermal path. Infineon specifies minimum 100 mm² copper area on 2 oz PCB for DRAIN to maintain T_j,MOS ≤ 125°C at full load; insufficient copper causes premature OTP shutdown.