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The onsemi NCP107x series integrates a fixed-frequency, current-mode controller with a 700 V MOSFET, designed for low-power offline Switch-Mode Power Supplies (SMPS). These devices offer a high level of integration, including soft-start, frequency-jittering, short-circuit protection, skip-cycle, a maximum peak current set point, ramp compensation, and Dynamic Self-Supply (DSS) to eliminate the need for an auxiliary winding. The NCP107x series operates quietly by switching at fixed frequencies (65, 100, or 130 kHz) during nominal load and automatically enters frequency foldback and skip modes at lower power demands to improve efficiency and reduce standby consumption. Protection features include overload/short-circuit detection, auto-recovery overvoltage protection, and AC input line voltage detection. For improved standby performance, an auxiliary winding connection can stop DSS operation, reducing input power consumption below 50 mW at high line. Typical applications include auxiliary/standby isolated power supplies for white goods, smart meters, and e-meters.
Product Attributes
Brand: onsemi
Technology: Very High Voltage Integrated Circuit
Packaging Options: PDIP-7, SOT-223
Certifications: Pb-Free Devices
Technical Specifications
Model
Frequency (kHz)
RDS(on) ()
Ipeak (mA)
Max Output Power (230 Vac)
Max Output Power (85-265 Vac)
Package
NCP1070
65 / 100 / 130
22
250
14 W
7.75 W
PDIP-7 / SOT-223
NCP1071
65 / 100 / 130
22
350
14 W
7.75 W
PDIP-7 / SOT-223
NCP1072
65 / 100 / 130*
11
250 / 450
19 W
10 W
PDIP-7 / SOT-223
NCP1075
65 / 100 / 130
11
450
19 W
10 W
PDIP-7 / SOT-223
NCP1076
65 / 100 / 130
4.7
650
25 W
15 W
PDIP-7 / SOT-223
NCP1077
65 / 100 / 130
4.7
800
25 W
15 W
PDIP-7 / SOT-223
*130 kHz on demand only.
Key Features:
Built-in 700 V MOSFET
Large Creepage Distance Between High-voltage Pins
Current-Mode Fixed Frequency Operation
Fixed Ramp Compensation
Skip-Cycle Operation at Low Peak Currents Only
Dynamic Self-Supply: No Need for an Auxiliary Winding
Internal 1 ms Soft-Start
Auto-Recovery Output Short Circuit Protection with Timer-Based Detection
Auto-Recovery Overvoltage Protection with Auxiliary Winding Operation
Frequency Jittering for Better EMI Signature, Including Frequency Foldback Mode
No Load Input Consumption < 50 mW
Frequency Foldback to Improve Efficiency at Light Load
Company Profile
Beijing Silk Road Enterprise Management Services Co.,Ltd. is a professional company focus on integrated circuit ic business. Beijing Silk Road will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining an...
Company Profile
Beijing Silk Road Enterprise Management Services Co.,Ltd. is a professional company focus on integrated circuit ic business. Beijing Silk Road will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining an...