Product Summary

The NCP1200D100R2 is a Current Mode PWM Controller which represents one of the cheapest solutions to build efficient and cost-effective Switch-Mode Power Supplies(SMPS). As this design example will show, the part definition does not confine the component in low-power applications only, but the NCP1200D100R2 can actually be used in Flyback and Forward supplies for virtually any output power. The below example depicts a universal mains 90-260 VAC power supply delivering 16.5 V @ 4.5 A. Beside its ease of implementation, the NCP1200D100R2 excels in true low standby power designs. This application note details how an amazing standby power of less than 100 mW can be reached at high line with a nominal 70 W board.

Parametrics

NCP1200D100R2 absolute maximum ratings: (1)Power Supply Voltage: VCC,16 V; (2)Thermal Resistance Junction-to-Air, PDIP-8 version: 100℃/W; (3)Thermal Resistance Junction-to-Air, SOIC version: 178℃/W; (4)Maximum Junction Temperature:150℃; (5)Typical Temperature Shutdown: 140℃; (6)Storage Temperature Range: -60 to +150 ℃; (7)ESD Capability, HBM Model (All Pins except VCC and HV): 2.0 kV; (8)ESD Capability, Machine Model: 200 V; (9)Maximum Voltage on Pin 8 (HV), pin 6 (VCC) Grounded: 450 V; (10)Maximum Voltage on Pin 8 (HV), Pin 6 (VCC) Decoupled to Ground with 10 μF: 500 V; (11)Minimum Operating Voltage on Pin 8 (HV): 30 V.

Features

NCP1200D100R2 features: (1)No Auxiliary Winding Operation; (2)Internal Output Short-Circuit Protection; (3)Extremely Low No-Load Standby Power; (4)Current-Mode with Skip-Cycle Capability; (5)Internal Leading Edge Blanking; (6)250 mA Peak Current Source/Sink Capability; (7)Internally Fixed Frequency at 40 kHz, 60 kHz and 100 kHz; (8)Direct Optocoupler Connection; (9)Built-in Frequency Jittering for Lower EMI; (10)SPICE Models Available for TRANsient and AC Analysis; (11)Internal Temperature Shutdown; (12)Pb-Free Packages are Available.

Diagrams

NCP1200D100R2 Typical Application

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
NCP1200D100R2
NCP1200D100R2

ON Semiconductor

Current Mode PWM Controllers 100KHz Current Mode

Data Sheet

Negotiable 
NCP1200D100R2G
NCP1200D100R2G

ON Semiconductor

Current Mode PWM Controllers 100KHz Current Mode SMPS PWM

Data Sheet

0-1: $0.68
1-25: $0.61
25-100: $0.41
100-500: $0.35