The NCP1200 is a PWM current-mode controller for low-power universal off-line supplies from Semiconductor Components Industries, LLC. It is housed in SOIC-8 or PDIP-8 packages, and features a small size, low power consumption, and low noise.
The NCP1200 is a PWM Current-Mode Controller designed for low-power universal off-line supplies. It operates at fixed frequencies of 40 kHz, 60 kHz, or 100 kHz and drives low gate-charge switching devices like IGBTs or MOSFETs. The device features an internal structure that allows operation without an auxiliary winding by self-supplying from the DC rail.
| Operating Frequency Options | 40 kHz, 60 kHz, or 100 kHz |
|---|---|
| Maximum Junction Temperature | 150 °C |
| Storage Temperature Range | -60 to +150 °C |
| Power Supply Voltage (Vcc) | 16 V |
| Maximum Duty Cycle | 80% |
| Internal IC Consumption (No Load) | 10.3 to 12.5 V |
The device is suitable for AC-DC adapters, offline battery chargers, and auxiliary power supplies.
No, the IC is self-supplied from the DC rail, eliminating the need for an auxiliary winding.
The internal current source turns off at a specific decreasing level to conserve power.