L6599A Datasheet PDF – Resonant Controller – ST

Part Number : L6599A

Function : Improved high-voltage resonant controller

Package : DIP 16, SO16N

Manufacturers : STMicroelectronics ( https://www.st.com/ )

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L6599A Resonant Controller


The L6599A is an improved revision of the previous L6599. It is a double-ended controller specific to series-resonant half bridge topology. It provides 50% complementary duty cycle: the high-side switch and the low-side switch are driven ON/OFF 180° out-of-phase for exactly the same time. Output voltage regulation is obtained by modulating the operating frequency. A fixed deadtime inserted between the turn-off of one switch and the turn-on of the other guarantees soft-switching and enables high-frequency operation.

To drive the high-side switch with the bootstrap approach, the IC incorporates a high-voltage floating structure able to withstand more than 600 V with a synchronous-driven high-voltage DMOS that replaces the external fast-recovery bootstrap diode. The IC enables the designer to set the operating frequency range of the converter by means of an externally programmable oscillator.

At startup, to prevent uncontrolled inrush current, the switching frequency starts from a programmable maximum value and progressively decays until it reaches the steady-state value determined by the control loop. This frequency shift is non-linear to minimize output voltage overshoots; its duration is programmable as well.


L6599A datasheet pinout


1. 50% duty cycle, variable frequency control of resonant half bridge
2. High-accuracy oscillator
3. Up to 500 kHz operating frequency
4. Two-level OCP: frequency-shift and latched shutdown
5. Interface with PFC controller
6. Latched disable input
7. Burst mode operation at light load
8. Input for power-ON/OFF sequencing or brownout protection
9. Non-linear soft-start for monotonic output voltage rise
10. 600 V-rail compatible high-side gate driver with integrated bootstrap diode and high dv/dt immunity
11. -300/800 mA high-side and low-side gate drivers with UVLO pull-down

L6599A Datasheet PDF Download

Other data sheets within the file : L6599AN, L6599AD, L6599ADTR

LD1585CV Datasheet – Voltage Regulator Adjustable – ST

Part Number : LD1585CV

Function : 5 A low dropout fast response positive voltage regulator adjustable

Package : TO 220 Pin

Manufacturers : STMicroelectronics


LD1585CV Voltage Regulator


The LD1585CV is a low drop voltage regulator able to provide up to 5 A of output current. Dropout is guaranteed at a maximum of 1.4 V at the maximum output current, decreasing at lower loads. The device has been improved to be utilized in low voltage applications where transient response and minimum input voltage are critical.

LD1585CV datasheet pinout

1. Typical dropout 1.2 V
2. Fast transient response
3. Three terminal adjustable
4. Guaranteed output current up to 5 A
5. Output tolerance ± 1 % at 25 °C and ± 2 % in full temperature range
6. Internal power and thermal limit
7. Pinout compatibility with standard adjustable VREG

LD1585CV Datasheet

Other data sheets within the file : LD1585CXX