NCP1028: High Voltage Switching Regulator for Offline SMPS
The NCP1028 offers a new solution targeting output power levels from a few watts up to 15W in a universal mains flyback application. Our proprietary high-voltage technology lets us include a power MOSFET together with a startup current source, all directly connected to the bulk capacitor. To prevent lethal runaway in low input voltage conditions, an adjustable brown-out circuitry blocks the activity until sufficient input level is reached. Current-mode operation together with an adjustable ramp compensation offers superior performance in universal mains applications. Protection wise, a timer detects an overload or a short-circuit and stops all operations, ensuring a safe auto-recovery, low duty cycle burst operation. An integrated, auto-recovery. Finally, a great RDS(on) figure makes the circuit an excellent choice for standby/auxiliary offline power supplies or applications requiring higher output power levels.
技术特性
- Built-in 700 V MOSFET with Typical RDS(on)of 5.8 , TJ= 25°C
- Current-Mode Fixed Frequency Operation: 65 kHz and 100 kHz
- Fixed Peak Current of 800 mA
- Skip-Cycle Operation at Low Peak Currents
- Internal Current Source for Clean and Lossless Startup Sequence
- Auto-Recovery Output Short Circuit Protection with Timer-Based
Detection
- Programmable Brown-Out Input for Low Input Voltage Detection
- Programmable Over Power Protection
- Input to Permanently Latchoff the Part
- Internal Frequency Jittering for Improved EMI Signature
- Extended Duty Cycle Operation to 80% Typical
- No-Load Input Standby Power of 85 mW @ 265 Vac
- 500 mW Loaded, Input Power of 715 mW @ 230 Vac
- These are Pb-Free Devices**
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应用
- Medium Power AC-DC Adapters for Chargers
- Auxiliary power supply
终端产品
- Desktop PC
- Flat TVs
- DVD, STB
封装图 PACKAGE DIMENSIONS
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评估板信息
订购信息 Ordering Information
| 产品 |
状况 |
Compliance |
具体说明 |
封装 |
MSL* |
容器 |
预算价格 (1千个数量的单价） |
| 类型 |
外形 |
类型 |
数量 |
| NCP1028P065G |
Active |
|
High Voltage Switching Regulator for Offline SMPS |
PDIP-8 |
626A-01 |
|
Tube |
50 |
$0.48 |
| NCP1028P100G |
Active |
|
High Voltage Switching Regulator for Offline SMPS |
PDIP-8 |
626A-01 |
|
Tube |
50 |
$0.48 |
数据资料DataSheet下载
