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Name: FSDH321L
Brand: ON Semiconductor
SKU: FSDH321L
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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ON Semiconductor FSDH321L

Part No.:: FSDH321L

Manufacturer:: ON Semiconductor

Package:: 8-SMD, Gull Wing

Datasheet:: FSDH321L.pdf

Description:: IC OFFLINE SWITCH FLYBACK 8LSOP

In Stock:: 3720

Quantity:: Add To Cart

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FSDH321L Specifications

Packaging:
Tube
Series:
FPS™
ProductStatus:
Obsolete
OutputIsolation:
Isolated
InternalSwitch(s):
Yes
Voltage-Breakdown:
650V
Topology:
Flyback
Voltage-StartUp:
12 V
Voltage-Supply(Vcc/Vdd):
8V ~ 20V
DutyCycle:
67%
Frequency-Switching:
100kHz
Power(Watts):
17 W
FaultProtection:
Current Limiting, Over Load, Over Temperature, Over Voltage
ControlFeatures:
-
OperatingTemperature:
-25°C ~ 85°C (TA)

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FSDH321L information

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FSDH321L Typical application Circuitry

FSDH321L

The FSDH321L is part of the innovative FSDH series, renowned for integrating Power Switch (FPS) technology into a single compact package. This series is specifically engineered for switch-mode power supply (SMPS) applications, focusing on delivering high efficiency, low standby power consumption, and enhanced system reliability. The FSDH321L, in particular, combines a PWM (Pulse Width Modulation) controller and a high-voltage MOSFET, making it an excellent choice for designing power supplies in consumer electronics, office automation, and standby power systems where space and power efficiency are critical.

1. Integrated PWM Controller and MOSFET Design: The essence of the FSDH321L lies in its integrated approach, combining a PWM controller with a high-voltage MOSFET in one package. This design simplifies SMPS construction, enabling compact, efficient power conversion essential for reducing energy consumption and minimizing physical footprint in electronic devices.

2. Pin Configuration for SMPS Integration: The FSDH321L is designed with a concise and functional pin layout to support its operation within an SMPS framework. Key pins typically include the Drain (D) pin, which connects to the high-voltage input side of the power supply; the Source (S) pin, which serves as the system ground and reference point for the internal PWM controller; and the Feedback (FB) pin, essential for regulating the output voltage through closed-loop feedback. Additional pins may include a Vcc pin for supplying power to the internal controller circuit.

3. Power Supply Connection and Feedback Loop: To ensure the FSDH321L operates optimally, a stable power supply must be provided to the Vcc pin to power the internal controller, adhering to the specified voltage range. The Feedback pin plays a crucial role in the SMPS's voltage regulation, allowing the device to adjust the PWM duty cycle based on the feedback signal from the output, thereby maintaining stable output voltage across varying load conditions.

4. MOSFET Switching and Circuit Topology: The integrated MOSFET's Drain pin should be connected to the primary side of the SMPS transformer, facilitating the controlled switching necessary for efficient voltage conversion. The choice of SMPS topology (e.g., flyback, forward) will dictate the specific configuration of the transformer, rectification stage, and output filtering components, impacting the overall performance and efficiency of the power supply.

5. Thermal Management Considerations: Effective thermal management is paramount for the FSDH321L due to its power handling capabilities. Implementing appropriate heat sinking measures for the MOSFET and designing the PCB to enhance thermal dissipation can help keep the device within its safe operating temperature range, ensuring reliability and longevity.

6. Incorporation into Power Supply Designs: Integrating the FSDH321L into a power supply involves considering various circuit elements such as input rectification, output filtering capacitors, and protective features like overvoltage, overcurrent, and thermal shutdown mechanisms, which are often integral to the FSDH series devices. These components are vital for ensuring the safety and reliability of the power supply and the devices it powers.

In summary, the FSDH321L is a compact, integrated Power Switch from the FSDH series, designed for efficient and reliable switch-mode power supplies. Implementing this device involves understanding its pin functions, providing a stable power supply, configuring the feedback loop for accurate voltage regulation, planning MOSFET switching with an appropriate SMPS topology, ensuring robust thermal management, and including necessary circuit protection features. By adhering to these design principles, engineers can utilize the FSDH321L to develop power-efficient, reliable power supplies for a wide array of applications.

FSDH321L FAQ

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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 FSDH321L?

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 FSDH321L we delivered, we will accept the replacement or return of the FSDH321L 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 FSDH321L.

(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