NCP1027: High Voltage Switching Regulator for Offline SMPS

Overview
Specifications
Packages
Applications
Datasheet: High−Voltage Switcher for Medium Power Offline SMPS Featuring Low Standby Power
Rev. 4 (637.0kB)
»View Reliability Data
»View Material Composition
»Product Change Notification (5)
Product Overview
Product Description
The NCP1027 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, Overvoltage Protection permanently monitors the VCC level and temporarily shuts down the driving pulses in case of an unexpected feedback loop runaway.
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.
Features
 
  • Built-in 700 V MOSFET with Typical RDS(on) of 5.8 , Tj = 25C
  • Current-Mode Fixed Frequency Operation: 65 & 100 kHz
  • Fixed Peak Current of 800 mA
  • Proprietary 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
  • Auto-Recovery Overvoltage Protection with Auxiliary Winding Operation
  • 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
Applications   End Products
  • Medium Power AC-DC Adapters for Chargers
  • Auxiliary power supply
  • Medium Power AC-DC power supply for CE apparatus
 
  • Mpeg3 players
  • Flat Tvs: LCD and Plasma
  • Deskop PC, Server
  • DVD, Set Top Box
Technical Documentation & Design Resources
Design & Development Tools (2) Data Sheets (1)
Reference Designs (5) Package Drawings (1)
Design Notes (4) Videos (1)
Application Notes (9) Evaluation Board Documents (13)
Simulation Models (2)  
Evaluation Board Information
Evaluation Board Status Compliance Short Description Action
NCP1027ATXGEVB Active
Pb-free
10 W Standby ATX Evaluation Board
NCP1398LCDGEVB Active
Pb-free
NCP1398 PFC+LCC+STBY LED-TV Design Power Supply
NCP1910GEVB Active
NCP1910DEMO-B-TLS
Avnet (2014-04-23) : 2
Mouser (2014-04-23) : 2
Digi-Key (2014-04-23) : 2
Avnet (2014-04-23) : 1
Avnet (2014-04-23) : 1
Availability and Samples
Product
Status
Compliance
Description
Package
MSL*
Container
Budgetary Price/Unit
Type
Case Outline
Type
Qty.
NCP1027P065G Active
Pb-free
Halide free
High Voltage Switching Regulator for Offline SMPS PDIP-8 626A-01 NA Tube 50 $0.45
NCP1027P100G Active
Pb-free
Halide free
High Voltage Switching Regulator for Offline SMPS PDIP-8 626A-01 Tube 50 $0.45
Moisture Sensitivity level (MSL) for surface mount devices (lead free measured at 260°C reflow, non lead free at 235°C reflow)
Market Leadtime (weeks) :
Avnet   (2014-04-23 00:00) : >1K
Digi-Key   (2014-04-23 00:00) : >1K
Mouser   (2014-04-23 00:00) : <1K
P&S   (2014-04-23 00:00) : <1K
Market Leadtime (weeks) :
Mouser   (2014-04-23 00:00) : <100
ON Semiconductor   (2014-04-16 00:00) : 49,800
Datasheet: High−Voltage Switcher for Medium Power Offline SMPS Featuring Low Standby Power
Rev. 4 (637.0kB)
»View Reliability Data
»View Material Composition
»Product Change Notification (5)
Product Overview

Product Compliance Status Description 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 Comp. Brown-out Latch Package Type
 Pb-free 
 Halide free 
 Active     High Voltage Switching Regulator for Offline SMPS   Current Mode   65   Yes   Yes   5.6   700   800   Yes   N/A   Yes   Yes   Yes   Yes   Yes   PDIP-8 
 Pb-free 
 Halide free 
 Active     High Voltage Switching Regulator for Offline SMPS   Current Mode   100   Yes   Yes   5.6   700   800   Yes   N/A   Yes   Yes   Yes   Yes   Yes   PDIP-8 
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