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Name: L6599D
Brand: STMicroelectronics
SKU: L6599D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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STMicroelectronics L6599D

Part No.:: L6599D

Manufacturer:: STMicroelectronics

Package:: 16-SOIC (0.154, 3.90mm Width)

Datasheet:: L6599D.pdf

Description:: IC RESONANT CONVRTR CTRLR 16SOIC

In Stock:: 403

Quantity:: Add To Cart

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L6599D Typical application Circuitry

L6599D

The L6599D is a pivotal member of the high-voltage resonant controller family, crafted to drive the half-bridge topology in resonant mode power supplies. This sophisticated device integrates advanced features to streamline the design of energy-efficient, compact power converters, making it an ideal choice for applications ranging from flat-screen TVs to server power supplies and beyond. The L6599D's architecture is tailored to optimize power conversion efficiency and reliability, ensuring its applicability across a diverse range of high-performance power supply designs.

1. High-Voltage Startup (HV): The L6599D includes a high-voltage startup pin that allows the chip to be directly connected to the bulk voltage, facilitating an immediate startup sequence and eliminating the need for auxiliary bias winding. This feature ensures that the power supply initiates efficiently, reducing standby power consumption.

2. Resonant Oscillator and Frequency Modulation (OSC, FMIN, FMAX): At the heart of the L6599D lies its resonant oscillator, which dictates the switching frequency of the half-bridge. The frequency modulation pins (FMIN, FMAX) enable the adjustment of the operating frequency range, providing a means to tailor the resonant frequency according to the specific requirements of the application, thereby enhancing the converter's efficiency and electromagnetic compatibility (EMC) performance.

3. Gate Drive Outputs (GATE_H, GATE_L): The L6599D is equipped with two gate drive outputs for the high-side and low-side MOSFETs in the half-bridge. These outputs are designed to deliver powerful and fast switching signals, minimizing transition losses and ensuring efficient operation of the power stage.

4. Feedback and Protection Inputs (FB, ZCD, CS): Feedback control is achieved through the FB pin, which is connected to the secondary side of the converter to regulate the output voltage. The Zero-Current Detection (ZCD) pin is used to sense the resonant tank's zero-current condition, optimizing the switching moment for reduced losses. The Current Sense (CS) pin provides over-current protection by monitoring the primary side current, ensuring the safe operation of the power supply under fault conditions.

5. Soft-Start and Fault Management (SS, SD): The L6599D incorporates a soft-start pin (SS) that gradually increases the switching frequency from a lower start value to the resonant frequency, mitigating startup stress on the components. The Shutdown (SD) pin offers a rapid means to turn off the device in response to fault conditions, such as overvoltage or overcurrent, thereby safeguarding the power supply and its load.

6. Auxiliary Functions (SYNC, PFC): The synchronization pin (SYNC) allows multiple L6599D devices to operate in phase, reducing electromagnetic interference in systems requiring more than one converter. Additionally, a Power Factor Correction (PFC) control output is available for driving a PFC pre-regulator, ensuring that the power supply complies with harmonic current emission regulations.

7. Supply and Ground Connections (VCC, GND): The device is powered through the VCC pin, with a recommended operating voltage that ensures stable operation of the internal circuits. The ground (GND) connection provides a common reference for the entire chip, ensuring signal integrity and reliable operation.

Integrating the L6599D into a power supply design demands careful consideration of its unique features and operational requirements. From the high-voltage startup to the sophisticated frequency modulation and protection mechanisms, each aspect of the L6599D contributes to the efficiency, reliability, and performance of the resulting power converter. By adhering to the recommended pin connections and leveraging the L6599D's advanced functionalities, designers can achieve state-of-the-art power supply solutions suitable for a wide array of high-demand applications.

L6599D information

L6599D Specifications

Packaging:
Tube
Series:
-
ProductStatus:
Not For New Designs
Applications:
Resonant Converter Controller
Voltage-Input:
-
Voltage-Supply:
8.85V ~ 16V
Current-Supply:
3.5 mA
OperatingTemperature:
0°C ~ 105°C
MountingType:
Surface Mount

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3. Are the L6599D price and inventory displayed accurate?

The price and inventory of L6599D fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.

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Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.

6. What is the process for return or replacement of L6599D?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the L6599D we delivered, we will accept the replacement or return of the L6599D only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of L6599D.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations