NCP1360: Low Power Offline Constant Current & Constant Voltage Primary Side PWM Current-Mode Controller
The NCP1360 offers a new solution targeting output power levels from a few watts up to 20 W in a universal-mains flyback application.
Thanks to a novel method this new controller saves the secondary feedback circuitry (opto-coupler and TL431 reference) while achieving excellent line and load regulation.
The NCP1360 operates in valley lockout quasi-resonant peak current mode control mode at high load to provide high efficiency. When the power on the secondary side starts to diminish, the controller automatically adjusts the duty-cycle then at lower load the controller enters in pulse frequency modulation at fixed peak current with a valley switching detection. This technique allows keeping the output regulation with tiny dummy load. Valley lockout at the first 4 valleys prevent valley jumping operation and then a valley switching at lower load provides high efficiency.
Features- No frequency clamp, 80 or 110 kHz Maximum Switching Frequency
- Quasi-Resonant with Valley Switching Operation
- Fixed Peak Current & Deep frequency foldback @ light load operation
- Cycle by Cycle peak current limit
- Wide Operation VCC range (up to 28 V)
- Internal Temperature Shutdown
- CS & Vs/ZCD pin Short and Open Protection
- Constant Current Primary-side feedback eliminates secondary controller
- ±10% Current Regulation
- Build-in soft-sart
- Clamped Gate-drive Output for Mosfet
- Less than 30 mW No-Load Performance
| Benefits- Prevents high frequency interference with a touchscreen
- Offers high efficiency operation
- Low consumption at light load
- Safe operation
- Design flexibility
- Safe operation
- Safe operation
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Design & Development Tools (1)
Data Sheets (1)
Package Drawings (1)
| Document Title | Document ID/Size | Revision |
|---|
| TSOP-6 | 318G-02 (64.1kB) | V |
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| NCP1360AABCYSNT1G | Active | Pb-free
Halide free | TSOP-6 | 318G-02 | 3 | Tape and Reel | 3000 | $0.2267 |
| NCP1360BABCYSNT1G | Active | Pb-free
Halide free | TSOP-6 | 318G-02 | 3 | Tape and Reel | 3000 | $0.2267 |
| NCP1360BBCCYSNT1G | Product Preview | Pb-free
Halide free | TSOP-6 | 318G-02 | 3 | Tape and Reel | 3000 | Contact BDTIC |
| NCP1360BCCCYSNT1G | Product Preview | Pb-free
Halide free | TSOP-6 | 318G-02 | 3 | Tape and Reel | 3000 | Contact BDTIC |
Specifications
| Product | Topology | Control Mode | fsw Typ (kHz) | Stand-by Mode | UVLO (V) | Short Circuit Protection | Latch | Soft Start | VCC Max (V) | Drive Cap. (mA) |
|---|
| NCP1360AABCYSNT1G | Flyback | Current Mode | Variable | Yes | 6.5 | Yes | Yes | Yes | 28 | 2000 / 1000 |
| NCP1360BABCYSNT1G | Flyback | Current Mode | Variable | Yes | 6.5 | Yes | No | Yes | 28 | 2000 / 1000 |
| NCP1360BBCCYSNT1G | Flyback | Current Mode | Variable | Yes | 6.5 | Yes | No | Yes | 28 | 2000 / 1000 |
| NCP1360BCCCYSNT1G | Flyback | Current Mode | Variable | Yes | 6.5 | Yes | No | Yes | 28 | 2000 / 1000 |
