Overview
The NCP1012AP065G is a part of the NCP101X series from onsemi, designed as a self-supplied monolithic switcher for low standby-power offline Switch-Mode Power Supplies (SMPS). This component integrates a fixed-frequency current-mode controller and a 700 V MOSFET, making it a comprehensive solution for building rugged and low-cost power supplies. The NCP1012AP065G is housed in a PDIP-7 or SOT-223 package and features advanced functionalities such as soft-start, frequency jittering, short-circuit protection, and skip-cycle operation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | PDIP-7 or SOT-223 | |
| Drain Voltage | 0 to 700 | V |
| Peak Current Limit | 225 to 275 | mA |
| Operating Frequency | 65 kHz | kHz |
| Maximum Junction Temperature | 150 | °C |
| Power Switch Breakdown Voltage | 700 | V |
| Internal Soft-Start Time | 1.0 | ms |
| Maximum Duty Cycle | 62 to 72 | % |
| Temperature Shutdown | 140 to 160 | °C |
Key Features
- Integrated Current-Mode Controller and MOSFET: Combines a fixed-frequency current-mode controller with a 700 V MOSFET in a single package.
- Dynamic Self-Supply (DSS): Eliminates the need for an auxiliary winding, simplifying transformer design and improving control in difficult output conditions.
- Short-Circuit Protection: Features an internal protection circuit that monitors and responds to peak current limits and fault conditions.
- Soft-Start and Frequency Jittering: Reduces electromagnetic interference (EMI) and ensures smooth startup.
- Skip-Cycle Operation: Enhances efficiency during light load conditions.
- Low Standby Power: Optimized for low power consumption during standby mode.
Applications
- Offline Switch-Mode Power Supplies (SMPS): Ideal for building efficient and reliable power supplies for various applications.
- Consumer Electronics: Suitable for use in TVs, set-top boxes, and other consumer electronic devices.
- Industrial Power Supplies: Used in industrial control systems, medical devices, and other industrial applications requiring robust power supplies.
- LED Lighting Systems: Can be used in LED lighting systems that require efficient and reliable power management.
Q & A
- What is the NCP1012AP065G used for?
The NCP1012AP065G is used for building low standby-power offline Switch-Mode Power Supplies (SMPS).
- What package types are available for the NCP1012AP065G?
The NCP1012AP065G is available in PDIP-7 and SOT-223 packages.
- What is the maximum drain voltage of the NCP1012AP065G?
The maximum drain voltage is 700 V.
- What are the key features of the NCP1012AP065G?
Key features include an integrated current-mode controller and MOSFET, Dynamic Self-Supply (DSS), short-circuit protection, soft-start, frequency jittering, and skip-cycle operation.
- How does the Dynamic Self-Supply (DSS) feature work?
The DSS feature allows the IC to be supplied directly from the high-voltage DC rail, eliminating the need for an auxiliary winding and simplifying transformer design.
- What is the purpose of the soft-start feature?
The soft-start feature reduces electromagnetic interference (EMI) and ensures a smooth startup of the power supply.
- What is the operating frequency of the NCP1012AP065G?
The operating frequency is 65 kHz.
- What is the maximum junction temperature of the NCP1012AP065G?
The maximum junction temperature is 150°C.
- How does the short-circuit protection work?
The internal protection circuit monitors the assertion of an internal error flag, which signals the controller to respond to peak current limits and fault conditions such as short circuits.
- What are some common applications of the NCP1012AP065G?
Common applications include offline SMPS, consumer electronics, industrial power supplies, and LED lighting systems.
