Model No: NCP1079BBP100G
onsemi NCP1079BBP100G
Manufacturer: onsemi
SEMICON NO.: NCP1079BBP100G
Package: 8-DIP
Stock: In stock
Description: IC OFFLINE SWITCH FLYBACK
SEMICON NO.: NCP1079BBP100G
Package: 8-DIP
Stock: In stock
Description: IC OFFLINE SWITCH FLYBACK
Quantity :
| Mfr | onsemi |
| Device Type | High-Voltage Switcher / Offline SMPS Controller |
| Topology | Flyback (Buck-Boost also supported) |
| Control Mode | Current-Mode Control |
| Control Technique | Pulse Width Modulation (PWM) |
| Output Isolation | Isolated |
| Output Power (Max) | 41 W |
| Output Current (Max) / Peak Current | 1.05 A (1050 mA) |
| Breakdown Voltage (V(BR)DSS) | 700 V |
| Supply Voltage - Operating (VCC) | 6.5 V to 20 V |
| Startup Voltage | 8.4 V (Typical) |
| Switching Frequency | 100 kHz (Fixed) |
| Operating Supply Current (Icc) | 1.4 mA (Typical) |
| Operating Temperature | -40°C to +125°C |
| Package | 8-DIP |
| Mounting Type | Through Hole |
| Compliance | RoHS Compliant |
NCP1079BBP100G High-Voltage Switcher / Offline SMPS Controller
TheNCP1079BBP100G from onsemi is an enhanced off-line switcher integrating a 700 V avalanche-rugged MOSFET with a fixed-frequency current-mode PWM controller in a compact 7-lead PDIP-8 package. Designed for universal mains inputs (~85–265 V AC), it targets low-to-medium power flyback converters up to ~15 W in open-frame designs, with a nominal switching frequency of 100 kHz. The controller employs a dynamic self-supply (DSS) circuit that eliminates the need for an auxiliary winding during startup, while built-in soft-start, frequency jittering, and skip-cycle operation enable low standby power below 50 mW at no load. Rated for junction temperatures from –40 °C to +125 °C, it suits demanding industrial and appliance environments with robust creepage spacing between high-voltage pins.
Key features include a low RDS(on) of ~2.9 Ω (typical at 25 °C) for the integrated 700 V MOSFET, reducing conduction losses. Protections cover auto-recovery short-circuit/overload, adjustable brown-out and overvoltage detection, over-power compensation, and thermal shutdown. Internal slope compensation stabilizes current-mode control, while frequency foldback improves light-load efficiency. The DSS startup draws from the HV drain, with VCC UVLO at ~6.5 V (off) and ~8.4 V (on), transitioning to auxiliary winding supply for lower standby loss.
Alternatives off-line switcher
1. Power Integrations TOP247YN: Monolithic off-line switcher with integrated 700 V MOSFET, aimed at ~30 W adapters and auxiliary supplies with high thermal margin.
2. STMicroelectronics VIPer26: 800 V off-line SMPS controller with ruggedized power stage, targeting industrial and appliance power units up to 20 W.
3. Infineon CoolSET™ F3: Integrated 650/700 V flyback controller-MOSFET series optimized for low standby power in TV/appliance SMPS and USB-PD adapters.
TheNCP1079BBP100G from onsemi is an enhanced off-line switcher integrating a 700 V avalanche-rugged MOSFET with a fixed-frequency current-mode PWM controller in a compact 7-lead PDIP-8 package. Designed for universal mains inputs (~85–265 V AC), it targets low-to-medium power flyback converters up to ~15 W in open-frame designs, with a nominal switching frequency of 100 kHz. The controller employs a dynamic self-supply (DSS) circuit that eliminates the need for an auxiliary winding during startup, while built-in soft-start, frequency jittering, and skip-cycle operation enable low standby power below 50 mW at no load. Rated for junction temperatures from –40 °C to +125 °C, it suits demanding industrial and appliance environments with robust creepage spacing between high-voltage pins.
Key features include a low RDS(on) of ~2.9 Ω (typical at 25 °C) for the integrated 700 V MOSFET, reducing conduction losses. Protections cover auto-recovery short-circuit/overload, adjustable brown-out and overvoltage detection, over-power compensation, and thermal shutdown. Internal slope compensation stabilizes current-mode control, while frequency foldback improves light-load efficiency. The DSS startup draws from the HV drain, with VCC UVLO at ~6.5 V (off) and ~8.4 V (on), transitioning to auxiliary winding supply for lower standby loss.
Alternatives off-line switcher
1. Power Integrations TOP247YN: Monolithic off-line switcher with integrated 700 V MOSFET, aimed at ~30 W adapters and auxiliary supplies with high thermal margin.
2. STMicroelectronics VIPer26: 800 V off-line SMPS controller with ruggedized power stage, targeting industrial and appliance power units up to 20 W.
3. Infineon CoolSET™ F3: Integrated 650/700 V flyback controller-MOSFET series optimized for low standby power in TV/appliance SMPS and USB-PD adapters.
