Overview
The NCP1200P60G, produced by onsemi, is a PWM current-mode controller designed for low-power universal offline supplies. It is housed in a PDIP-8 package and represents a significant advancement in ultra-compact switch-mode power supplies. This controller allows for the implementation of complete offline battery chargers or standby SMPS with minimal external components. It features an integrated output short-circuit protection, enabling the design of low-cost AC/DC wall adapters with simplified feedback schemes. The NCP1200P60G operates at a fixed frequency of 60 kHz and drives low gate-charge switching devices such as IGBTs or MOSFETs, requiring very small operating power.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | PDIP-8 | |
| Control Mode | Current Mode | |
| Switching Frequency | 60 kHz | kHz |
| Peak Current Source/Sink Capability | 250 mA | mA |
| VCC Maximum Voltage | 16 V | V |
| Internal Temperature Shutdown | Yes | |
| Output Short-Circuit Protection | Yes | |
| No-Load Standby Power | Extremely Low | |
| Frequency Jittering for EMI Reduction | Yes | |
| SPICE Models Availability | Yes |
Key Features
- No Auxiliary Winding Operation
- Internal Output Short-Circuit Protection
- Extremely Low No-Load Standby Power
- Current-Mode with Skip-Cycle Capability
- Internal Leading Edge Blanking
- 250 mA Peak Current Source/Sink Capability
- Internally Fixed Frequency at 60 kHz
- Direct Optocoupler Connection
- Built-in Frequency Jittering for Lower EMI
- SPICE Models Available for Transient and AC Analysis
- Internal Temperature Shutdown
- Pb-Free, Halogen Free/BFR Free, and RoHS Compliant
Applications
- AC/DC Adapters
- Offline Battery Chargers
- Auxiliary/Ancillary Power Supplies (USB, Appliances, TVs, etc.)
Q & A
- What is the primary function of the NCP1200P60G?
The NCP1200P60G is a PWM current-mode controller designed for low-power universal offline supplies, such as AC/DC adapters and offline battery chargers.
- What is the switching frequency of the NCP1200P60G?
The switching frequency of the NCP1200P60G is fixed at 60 kHz.
- What type of package does the NCP1200P60G come in?
The NCP1200P60G is housed in a PDIP-8 package.
- Does the NCP1200P60G require an auxiliary winding?
No, the NCP1200P60G does not require an auxiliary winding; it operates using a dynamic self-supply from the DC rail.
- What is the peak current source/sink capability of the NCP1200P60G?
The peak current source/sink capability of the NCP1200P60G is 250 mA.
- Does the NCP1200P60G have built-in frequency jittering for EMI reduction?
Yes, the NCP1200P60G has built-in frequency jittering to reduce EMI.
- Is the NCP1200P60G RoHS compliant?
Yes, the NCP1200P60G is Pb-Free, Halogen Free/BFR Free, and RoHS compliant.
- What is the maximum VCC voltage for the NCP1200P60G?
The maximum VCC voltage for the NCP1200P60G is 16 V.
- Does the NCP1200P60G have internal temperature shutdown?
Yes, the NCP1200P60G has internal temperature shutdown.
- What are some typical applications of the NCP1200P60G?
Typical applications include AC/DC adapters, offline battery chargers, and auxiliary/ancillary power supplies for devices like USB, appliances, and TVs.
