L6599N

Power Supply Controllers, Monitors Overview

The L6599N is a double-ended resonant controller designed for half-bridge topologies, manufactured by STMicroelectronics in a DIP-16 package. 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 operating frequency and incorporates a fixed deadtime to ensure soft-switching. It features an integrated high-voltage floating structure capable of withstanding over 600 V, eliminating the need for an external bootstrap diode. The oscillator frequency is externally programmable, and the IC supports burst-mode operation at light loads.

Power Supply Controllers, Monitors Feature Summary

• Integrated high-voltage floating gate driver compatible with 600 V rails
• Programmable non-linear soft-start to minimize output voltage overshoots
• Two-level over-current protection with frequency shift and latched shutdown
• Controlled burst-mode operation for minimum input consumption at light load

Power Supply Controllers, Monitors Applications

• LCD and PDP TV power supplies
• Desktop PC and entry-level server power supplies
• Telecommunications SMPS
• High-efficiency industrial SMPS
• AC-DC adapters and open-frame SMPS

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'N' indicates the DIP-16 tube packaging variant when ordering. Confirm that the component meets RoHS compliance requirements for your target market. Ensure the design accommodates the specified operating temperature range from -40 °C to +150 °C. Validate that the supply voltage remains within the 8.85 V to 16 V window during all operational phases.

Power Supply Controllers, Monitors Selection Notes

Select this component for designs requiring a dedicated resonant half-bridge controller with integrated high-side drive capabilities. It is suitable for applications needing precise frequency modulation for voltage regulation. Consider the DIP-16 package if through-hole mounting is required for the specific PCB layout constraints. Evaluate the two-level OCP scheme against the system's short-circuit protection requirements.

Power Supply Controllers, Monitors Part Context

The L6599N belongs to the L6599A family of improved high-voltage resonant controllers. This series is engineered to replace discrete solutions by integrating the bootstrap diode and high-voltage DMOS into a single IC. The family supports various packages including SO-16 and DIP-16, catering to different manufacturing and thermal management needs in power supply designs.

Power Supply Controllers, Monitors Replacement Considerations

The L6599AD serves as the surface-mount equivalent in the same product family. Verify pin compatibility and thermal performance differences between the DIP-16 and SO-16N packages before substitution.