Key facts
- Brand
- ON Semiconductor
- Model
- NCP1200A
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-07-10
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ON Semiconductor NCP1200A PWM Current-Mode Controller Datasheet
The NCP1200A is a PWM current-mode controller designed for universal off-line supplies, battery chargers, and auxiliary power supplies. It features an internal structure operating at fixed frequencies of 40 kHz, 60 kHz, or 100 kHz, which allows the device to supply itself from the high-voltage rail without requiring an auxiliary winding. This design simplifies circuit implementation for battery charger applications and ensures excellent audio susceptibility through inherent pulse-by-pulse control.
Read onlineON Semiconductor NCP1200A specifications
| Operating Frequency | 40 kHz, 60 kHz, 100 kHz |
|---|---|
| Peak Current Capability | 250 mA |
| Maximum Junction Temperature | 150 °C |
| Temperature Shutdown | 145 °C |
| Storage Temperature Range | -60 to +150 °C |
| Power Supply Voltage (Vcc) | 16 V |
| Oscillation Frequency (40 kHz Version) | 37 to 48 kHz |
| Oscillation Frequency (60 kHz Version) | 53 to 68 kHz |
| Oscillation Frequency (100 kHz Version) | 90 to 114 kHz |
| Maximum Duty Cycle | 87 % |
Source: ON Semiconductor NCP1200A PWM Current-Mode Controller Datasheet
All ON Semiconductor NCP1200A documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What are the available operating frequencies for the NCP1200A?
The controller operates at fixed frequencies of 40 kHz, 60 kHz, or 100 kHz.
From: ON Semiconductor NCP1200A PWM Current-Mode Controller Datasheet
Does the NCP1200A require an auxiliary winding?
No, the controller supplies itself from the high-voltage rail, avoiding the need for an auxiliary winding.
From: ON Semiconductor NCP1200A PWM Current-Mode Controller Datasheet
Does the NCP1200A require an auxiliary winding?
No, it operates without an auxiliary winding by supplying itself from the high-voltage rail.
From: ON Semiconductor NCP1200A PWM Current-Mode Controller Datasheet
What happens when the output power demand diminishes?
The IC automatically enters skip cycle mode to provide excellent efficiency at light loads.
From: ON Semiconductor NCP1200A PWM Current-Mode Controller Datasheet
What are the typical applications for the NCP1200A?
The device is suitable for AC-DC adapters, offline battery chargers, and auxiliary power supplies.
From: ON Semiconductor NCP1200A PWM Current-Mode Controller Datasheet
Does the NCP1200A require an auxiliary winding?
No, it supplies itself from the high-voltage rail and avoids the need for an auxiliary winding.
From: ON Semiconductor NCP1200A PWM Current-Mode Controller Datasheet