L6599ATD

Power Supply Controllers, Monitors Overview

The L6599ATD is a double-ended controller designed for series-resonant half-bridge topology, manufactured by STMicroelectronics. It provides a fixed 50% complementary duty cycle with high-side and low-side switches driven 180° out-of-phase. The device regulates output voltage by modulating the operating frequency and incorporates a fixed deadtime to ensure soft-switching. Key electrical parameters include a maximum switching frequency of 500 kHz, a supply voltage range of 8.85 V to 16 V, and an operating temperature range from -40 °C to +150 °C. The IC features a synchronous-driven high-voltage DMOS capable of withstanding over 600 V, eliminating the need for external bootstrap diodes.

Power Supply Controllers, Monitors Feature Summary

• Incorporates a high-voltage floating structure with a synchronous-driven DMOS to replace external bootstrap diodes
• Provides externally programmable oscillator for flexible operating frequency range setting
• Features non-linear startup frequency decay to prevent inrush current and minimize overshoots
• Supports controlled burst-mode operation at light loads to minimize input consumption

Power Supply Controllers, Monitors Applications

• LED street lighting power supplies
• High-efficiency AC-DC converters with PFC
• Series-resonant half-bridge power conversion systems

Power Supply Controllers, Monitors Procurement Notes

Verify that the specific ordering suffix matches the required package type and tape/reel configuration. Confirm that the component meets the necessary environmental standards for the intended application. Ensure compatibility with the system's thermal management requirements given the specified operating temperature range. Cross-reference the manufacturer's latest datasheet for any updates regarding pinout or functional revisions.

Power Supply Controllers, Monitors Selection Notes

Select this controller for applications requiring resonant half-bridge topologies with high efficiency and soft-switching capabilities. The integrated high-voltage driver simplifies the design by removing external components. Consider the programmable frequency range and burst-mode functionality when optimizing for light-load efficiency. Ensure the external circuitry supports the required voltage levels and protection mechanisms defined in the specifications.

Power Supply Controllers, Monitors Part Context

The L6599ATD belongs to the L6599 family of improved resonant controllers from STMicroelectronics. It serves as an enhanced revision of earlier models, offering better performance in series-resonant half-bridge applications. The device is part of a broader portfolio of power management ICs designed for industrial and consumer electronics, focusing on reliability and efficiency in high-voltage environments.

Power Supply Controllers, Monitors Replacement Considerations

The L6599A and L6599 are previous revisions within the same product family. Verify functional compatibility and parameter alignment before substitution. Check for differences in package markings or specific ordering suffixes that may indicate variations in packaging or testing criteria.