What is the Additional Feature ?

Name: NCP1380DDR2G
Brand: ON Semiconductor
SKU: NCP1380DDR2G
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 NCP1380DDR2G

Part No.:: NCP1380DDR2G

Manufacturer:: ON Semiconductor

Package:: 8-SOIC (0.154, 3.90mm Width)

Datasheet:: NCP1380DDR2G.pdf

Description:: IC OFFLINE SWITCH FLYBACK 8SOIC

In Stock:: 3176

Quantity:: Add To Cart

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NCP1380DDR2G Typical application Circuitry

NCP1380DDR2G

NCP1380DDR2G is a high-performance, Quasi-Resonant (QR) flyback controller designed by ON Semiconductor, specifically tailored for AC-DC power conversion applications. It is optimized for use in power supplies that require efficient and low-noise operation, such as those found in LCD TVs, desktop monitors, and various types of adapters and chargers.

Application Scenario: LCD TV Power Supply

A common application for the NCP1380DDR2G is in the power supply unit (PSU) of an LCD TV, where it manages the conversion of AC mains power to various DC voltages needed to operate the TV's electronics, backlighting system, and other internal components.

Parameter Features

- Quasi-Resonant Operation: Reduces switching losses and improves overall efficiency, especially beneficial in light-load conditions.

- Adjustable Switching Frequency: Allows optimization of the magnetic components for size, cost, and efficiency.

- Built-In Protection Features: Includes Over-Current Protection (OCP), Over-Voltage Protection (OVP), and Brown-Out Protection, ensuring reliable operation under adverse conditions.

- Integrated Soft-Start: Minimizes stress on the power supply components during startup.

Detailed Circuit Connection for LCD TV Power Supply

AC Input and Rectification

Connect the AC mains input to a rectifier and filter circuit, then link the rectified DC output to the HV pin (High Voltage - Pin 1) of the NCP1380DDR2G. This connection provides the high-voltage DC input necessary for the flyback conversion process.

Transformer and Switching

Connect the GATE pin (Pin 6) of the NCP1380DDR2G to the primary side gate of a MOSFET that is coupled to the flyback transformer. The QR operation of the NCP1380DDR2G modulates this gate signal to control the energy transferred through the transformer.

Feedback and Regulation

Connect a feedback network from the secondary side of the transformer back to the FB pin (Feedback - Pin 3) of the NCP1380DDR2G. This network typically includes optocouplers and voltage dividers to ensure the output voltages are regulated according to the requirements of the LCD TV.

Startup and Protection

The VCC pin (Pin 2) should be connected to an auxiliary winding of the transformer or an external bias supply, providing the low-voltage power necessary for the NCP1380DDR2G operation. Ensure proper configuration of the protection features, such as OCP and OVP, by setting the appropriate component values in the feedback and control circuits.

Design Considerations

When designing an LCD TV PSU with the NCP1380DDR2G, several critical factors must be addressed:

- Transformer Design: Optimize the flyback transformer design for quasi-resonant operation, considering the switching frequency, power requirements, and efficiency targets.

- Component Selection: Carefully select the MOSFET, diodes, capacitors, and inductors to handle the peak currents and voltages, ensuring reliability and performance under various load conditions.

- Thermal Management: Evaluate the thermal performance of the entire PSU, especially the NCP1380DDR2G, the MOSFET, and the transformer, to implement adequate cooling solutions.

- EMI Considerations: Minimize electromagnetic interference through careful PCB layout, proper shielding, and the use of EMI filtering components to meet regulatory requirements for consumer electronics.

By leveraging the advanced features and capabilities of the NCP1380DDR2G, designers can develop efficient, reliable, and compact power supplies for LCD TVs, enhancing the performance and user experience of these devices.

NCP1380DDR2G information

NCP1380DDR2G Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
OutputIsolation:
Isolated
InternalSwitch(s):
No
Voltage-Breakdown:
-
Topology:
Flyback
Voltage-StartUp:
17 V
Voltage-Supply(Vcc/Vdd):
9V ~ 28V
DutyCycle:
-
Frequency-Switching:
-
Power(Watts):
-
FaultProtection:
Current Limiting, Over Temperature, Over Voltage, Short Circuit
ControlFeatures:
-
OperatingTemperature:
-40°C ~ 150°C (TJ)

NCP1380DDR2G FAQ

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6. What is the process for return or replacement of NCP1380DDR2G?

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 NCP1380DDR2G we delivered, we will accept the replacement or return of the NCP1380DDR2G 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 NCP1380DDR2G.

(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