High Voltage Switching Regulator for Offline SMPS

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Overview

The NCP1126 products integrates a fixed−frequency peak current mode controller with a low on− resistance high voltage, 650 V MOSFET. Available in a PDIP−7 package, the NCP1126 offers a high level of integration, including soft−start, frequency−jittering, short−circuit protection, thermal shutdown protection, frequency foldback mode and skip−cycle to reduce power consumption in light load condition, peak current mode control with adjustable internal ramp compensation and adjustable peak current set point. During nominal load operation, the part switches at one of the available frequencies (65 or 100 kHz). When the output power demand diminishes, the IC automatically enters frequency foldback mode and provides excellent efficiency at light loads. When the power demand reduces further, it enters into a skip mode to reduce the standby consumption down to no load condition. Protection feature include: a timer to detect an overload or a short−circuit event with auto−recovery or latch protection, and a built−in VCC overvoltage protection.The switcher also provides a jittered 65 kHz or 100 kHz switching frequency to improve the EMI.

  • Power Supply
  • Power supply for DVD, STB, CD-Player
  • Aux supply for TV, USB, Appliance
  • 650 V Avalanche Rated MOSFET
  • FixedFrequency 65 or 100 kHz CurrentMode Control Operation
  • Frequency Foldback Down to 26 kHz and SkipCycle in Light Load Conditions
  • Adjustable Current Limit with External Resistor
  • 50 ms Timer-Based Auto-Recovery Short-Circuit Protection
  • Frequency Jittering in Normal and Frequency Foldback Modes
  • Option for Auto-Recovery or Latched Short-Circuit Protection
  • Less than 100 mW Standby Power at High Line

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4

Product

Status

CAD Models

Compliance

Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Control Mode

fsw Typ (kHz)

fJitter Typ (%)

Stand-by Mode

RDS(ON) Typ (Ω)

V(BR)DSS Max (V)

IPeak (mA)

HV Start-up Min (V)

DSS (mA)

UVLO

Short Circuit Protection

Over Power Compensation

Brown-out

Latch

Reference Price

NCP1126AP100G

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Obsolete

CAD Model

Pb

A

H

P

PDIP-8

NA

0

TUBE

50

N

Current Mode

100

+/-5% of FSW

Yes

6

650

0

Yes

0

8.8

Yes

No

No

Yes

Price N/A

More Details

NCP1126AP65G

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Obsolete

CAD Model

Pb

A

H

P

PDIP-8

NA

0

TUBE

50

N

Current Mode

65

+/-5% of FSW

Yes

6

650

0

Yes

0

8.8

Yes

No

No

Yes

Price N/A

More Details

NCP1126BP100G

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Obsolete

CAD Model

Pb

A

H

P

PDIP-8

NA

0

TUBE

50

N

Current Mode

100

+/-5% of FSW

Yes

6

650

0

Yes

0

8.8

Yes

No

No

No

Price N/A

More Details

NCP1126BP65G

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Last Shipments

CAD Model

Pb

A

H

P

PDIP-8

NA

0

TUBE

50

N

Current Mode

65

+/-5% of FSW

Yes

6

650

0

Yes

0

8.8

Yes

No

No

No

Price N/A

More Details

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