Infineon Technologies IR2153

Overview

IR2153 from Infineon Technologies is a self-oscillating 600V half-bridge gate driver IC with integrated 15.6V zener clamp on VCC, 1.2µs typical deadtime, and shutdown functionality triggered at 1/6th VCC on the CT pin. It drives high- and low-side N-channel MOSFETs in resonant LLC and SMPS inverters, supporting fixed-frequency operation up to 20.6kHz with RT/CT timing network.

For engineers reviewing the IR2153 datasheet, IR2153 pinout, IR2153 application, or IR2153 equivalent, key selection criteria include its micropower startup current (75µA), ±1V UVLO hysteresis, internal bootstrap diode (0.5V VF, 250mA), latch immunity, and ESD protection on all pins - critical for reliable high-voltage inverter control.

Technical Context

The IR2153 integrates a CMOS 555-style oscillator front-end with dual output drivers: HO operates referenced to VS (floating) and LO referenced to COM (ground). Its deadtime is generated by internal R/2-R/2 delay networks and remains stable across temperature due to low TC design.

Startup relies on micropower VCC supply current (≤150µA below UVLO), while level-shifting uses low-di/dt circuitry to suppress noise coupling. The CT pin serves dual roles: oscillator ramp node and shutdown input - pulling CT ≤2.4V disables both outputs via internal comparator.

Key Specifications

Pinout & Package

IR2153 is available in 8-lead PDIP and 8-lead SOIC packages. Both share identical pin mapping and thermal characteristics under board-mounted, still-air conditions.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar self-oscillating half-bridge gate driver applications.

Compared with IR2155, IR2153 adds CT-based shutdown and internal bootstrap diode - enabling simpler, more robust inverter control. Compared with IRS2153D, it offers proven field reliability but slightly higher ICC and looser timing tolerances.

Availability

IR2153 is available at Aetrix Electronics and suitable for resonant LLC converters, half-bridge inverters, and SMPS power supplies requiring stable component supply, long-term lifecycle support, and industrial-grade gate drive performance.

Supply support for IR2153 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 global semiconductor leader specializing in power management, sensor, and automotive ICs, with core expertise in high-voltage gate drivers and energy-efficient systems.

The IR2153 belongs to Infineon's legacy high-voltage gate driver product line, designed specifically for cost-sensitive, self-oscillating half-bridge applications in lighting, power supplies, and consumer inverters.

FAQ

What is the purpose of the 15.6V zener clamp on the VCC pin?

The 15.6V zener clamp protects the internal logic and driver circuitry from overvoltage on the VCC pin. It requires external current limiting - typically a series resistor from the supply - to ensure clamping occurs within safe power dissipation limits. Exceeding the clamp voltage without current limiting risks permanent damage to the VCC regulator structure.

Can IR2153 drive both N-channel and P-channel MOSFETs in the high-side position?

IR2153 is designed exclusively for N-channel MOSFETs in both high-side and low-side positions. Its high-side driver uses bootstrap-based level shifting, which requires the high-side switch to be N-channel with source tied to VS. Driving P-channel devices would require reverse logic polarity and is not supported by the internal architecture.

How does the CT pin shutdown function interact with normal oscillator operation?

During normal operation, the CT pin ramps between 4.0V and 8.0V to set oscillator frequency. When CT voltage drops to ≤2.4V, the internal comparator forces both HO and LO outputs low and halts oscillation. The shutdown is latched until VCC rises above the rising UVLO threshold (≥9.0V), ensuring clean restart after fault clearance.

Is the internal bootstrap diode in IR2153D sufficient for continuous conduction mode (CCM) operation?

Yes - the internal diode (VF = 0.5V @ 250mA) supports CCM operation in typical 20–100kHz half-bridge designs with moderate gate charge loads (<100nC). For high-duty-cycle or high-frequency applications with large Qg, verify peak diode current and thermal rise using the bootstrap capacitor size and switching frequency per application note AN-978.