Overview
The NCP1247AD065R2G is a fixed-frequency current-mode controller produced by onsemi. This component is designed for use in flyback converters and features the Dynamic Self-Supply function, which simplifies the design of the auxiliary power supply. Although the NCP1247AD065R2G is currently obsolete and no longer manufactured, it remains relevant for existing designs and maintenance of older systems.
Key Specifications
| Parameter | Value |
|---|---|
| Frequency | 65 kHz |
| Package Type | SOIC-7 (Pb-Free) |
| Operating Mode | Latched |
| Supply Voltage | Up to 28 V |
| Maximum Duty Cycle | 70% |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | 150°C |
Key Features
- Dynamic Self-Supply: Simplifies the design of the auxiliary power supply by eliminating the need for an external bias supply.
- Fixed Frequency Operation: Operates at a fixed frequency of 65 kHz, ensuring stable and efficient switching.
- Current Mode Control: Provides precise control over the output current, enhancing the overall performance and reliability of the converter.
- Overvoltage Protection (OVP): Protects the system from overvoltage conditions, ensuring safe operation.
- UnderVoltage Lockout (UVLO): Prevents the controller from operating below a certain threshold voltage, protecting the system from malfunction.
Applications
- Flyback Converters: Ideal for use in flyback converters due to its fixed frequency and current mode control features.
- Offline Switchers: Suitable for offline switchers where high efficiency and reliability are required.
- Power Supplies: Used in various power supply designs where precise current control and protection features are necessary.
Q & A
- What is the operating frequency of the NCP1247AD065R2G?
The operating frequency is 65 kHz. - What is the package type of the NCP1247AD065R2G?
The package type is SOIC-7 (Pb-Free). - Is the NCP1247AD065R2G still in production?
No, the NCP1247AD065R2G is obsolete and no longer manufactured. - What is the Dynamic Self-Supply feature?
The Dynamic Self-Supply feature simplifies the design of the auxiliary power supply by eliminating the need for an external bias supply. - What are the key protection features of the NCP1247AD065R2G?
The key protection features include Overvoltage Protection (OVP) and UnderVoltage Lockout (UVLO). - What is the maximum duty cycle of the NCP1247AD065R2G?
The maximum duty cycle is 70%. - What are the typical applications of the NCP1247AD065R2G?
Typical applications include flyback converters, offline switchers, and various power supply designs. - What is the operating temperature range of the NCP1247AD065R2G?
The operating temperature range is from -40°C to 150°C. - What is the supply voltage range of the NCP1247AD065R2G?
The supply voltage range is up to 28 V. - Why is the NCP1247AD065R2G useful in power supply designs?
The NCP1247AD065R2G is useful due to its precise current control, fixed frequency operation, and built-in protection features.
