STMicroelectronics L6569AD013TR

Overview

L6569AD013TR from STMicroelectronics is a high-voltage half-bridge gate driver IC with integrated oscillator, designed for driving external N-channel MOSFETs and IGBTs in resonant lamp ballast and SMPS applications. It features 600V high-side rail capability, 1.25µs typ. dead time, ±50V/ns dV/dt immunity, internal bootstrap diode structure, and programmable oscillator frequency (200 kHz max) via external R_F/C_F.

For engineers reviewing the L6569AD013TR datasheet, L6569AD013TR pinout, L6569AD013TR application, or L6569AD013TR equivalent, key selection criteria include bootstrap LDMOS R_ON (120 Ω), UVLO thresholds (9 V turn-on / 8 V turn-off), sink/source drive strength (270 mA / 170 mA), and SO8 package compatibility with CFL ballast reference designs.

Technical Context

The L6569AD013TR integrates a charge-pump–driven high-voltage level shifter and patented synchronous bootstrap LDMOS (R_ON = 120 Ω typ.) that replaces the external bootstrap diode. Its oscillator uses R_F/C_F to set frequency (e.g., 60 kHz at R_F = 12 kΩ, C_F = 1 nF), with CF pin supporting external logic override.

Internal logic enforces 0.85–1.65 µs dead time to prevent shoot-through; VS pin includes 15.6 V zener clamp (I_S = 5 mA); startup current is 150 µA typ. Under-voltage lockout has 1 V hysteresis, and dV/dt immunity is validated to ±50 V/ns on BOOT/OUT pins.

Key Specifications

Pinout & Package

SO8 package (standard minidip footprint, 1.27 mm pitch), thermally rated to 150 °C junction temperature with R_{th j-amb} = 150 °C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage half-bridge driver applications.

Compared with IR2153(D)PbF and IRS21844STRPBF, the L6569AD013TR uniquely combines 600 V capability, integrated oscillator, and patented bootstrap LDMOS-reducing component count and improving reliability in CFL and resonant converters where space and startup robustness are critical.

Availability

L6569AD013TR is available at Aetrix Electronics and suitable for compact fluorescent lamp ballasts, resonant LLC converters, induction heating inverters, and BLDC motor drive half-bridge stages requiring stable component supply across industrial and lighting OEM programs.

Supply support for L6569AD013TR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, analog, and automotive-grade ICs with broad industrial qualification.

The L6569 series belongs to ST's high-voltage AC-DC and lighting control product line, engineered specifically for energy-efficient electronic ballasts and resonant switch-mode power supplies operating up to 600 V.

FAQ

What is the purpose of the internal bootstrap LDMOS in the L6569AD013TR?

The internal bootstrap LDMOS (R_ON = 120 Ω typ.) replaces the external bootstrap diode traditionally used to charge the high-side floating supply capacitor. It operates synchronously with the LVG output, turning on during low-side conduction to recharge the BOOT capacitor - reducing component count, improving reliability, and eliminating reverse recovery losses.

Can the L6569AD013TR be driven by an external PWM signal instead of its internal oscillator?

Yes - the CF pin accepts external logic-level signals: pulling CF to GND forces shutdown (low-side ON, high-side OFF), while applying a square wave enables external clock synchronization. The RF pin can also source/sink current to drive another L6569, supporting multi-phase or full-H-bridge expansion without additional timing circuitry.

How does the L6569AD013TR handle undervoltage conditions on the VS pin?

The device incorporates an under-voltage lockout (UVLO) with 9 V turn-on and 8 V turn-off thresholds (1 V hysteresis). When VS drops below 8 V, both drivers disable and oscillator halts; restart occurs only after VS exceeds 9 V. This prevents erratic switching during brown-outs and ensures clean startup in AC-DC ballast applications.

What is the maximum recommended operating frequency for the L6569AD013TR?

The datasheet specifies a maximum oscillator frequency of 200 kHz. At higher frequencies, bootstrap capacitor recharge time may become insufficient due to the fixed 1.25 µs dead time and LDMOS R_ON, risking high-side driver starvation. For reliable operation, ST recommends ≤150 kHz in production designs using standard 100 nF bootstrap capacitors.