Offline Regulators | NCP1028

High Voltage Switching Regulator for Offline SMPS

Obsolete

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Overview

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.

  • Medium Power AC-DC Adapters for Chargers
  • Auxiliary power supply

  • Desktop PC
  • Flat TVs
  • DVD, STB

  • Skips cycles on low power demand
  • Short circuit protection independent of the AUX winding
  • Overpower protection
  • Built-in 700 V MOSFET with Typical RDS(on) of 5.8 , Tj = 25C
  • Fixed Peak Current of 800 mA
  • Internal Current Source for Clean and Lossless Startup Sequence
  • Programmable Brown-Out Input for Low Input Voltage Detection
  • Input to Permanently Latchoff the Part
  • Internal Frequency Jittering for Improved EMI Signature
  • No-Load Input Standby Power of 85 mW @ 265 Vac
  • 500 mW Loaded, Input Power of 715 mW @ 230 Vac
  • Programmable Over Power Protection
  • Medium Power AC-DC power supply for CE apparatus

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fsw Typ (kHz)

fJitter Typ (%)

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Reference Price

NCP1028P065G

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Obsolete

Similar Products
CAD Model

Pb

A

H

P

PDIP-7

626A-01

NA

0

TUBE

50

N

Current Mode

65

Yes

Yes

5.6

700

800

Yes

N/A

Yes

Yes

Yes

Yes

No

Price N/A

More Details

NCP1028P100G

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Obsolete

Similar Products
CAD Model

Pb

A

H

P

PDIP-7

626A-01

NA

0

TUBE

50

N

Current Mode

100

Yes

Yes

5.6

700

800

Yes

N/A

Yes

Yes

Yes

Yes

No

Price N/A

More Details

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Reliability Data

Die Related Summary Data

Device: NCP1028P065G

Equivalent to wafer fab process: VHVIC

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

VHVIC

2

2577173853

More Details

Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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