feedback
Rate this webpage

Need
Support?


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. 5 (520kB)
Product Overview
»View Reliability Data
»View Material Composition
»Product Change Notification (6)
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
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
NCP1027ATXGEVB Active
Pb-free
10 W Standby ATX Evaluation Board
NCP1910GEVB Active
PFC and LLC controller for ATX, Flat TV Power Conversion
Avnet (2016-12-08) : 2
Mouser (2016-12-08) : 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-7 626A-01 NA Tube 50 $0.45
NCP1027P100G Active
Pb-free
Halide free
High Voltage Switching Regulator for Offline SMPS PDIP-7 626A-01 NA 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) : 2 to 4
Arrow   (Fri Dec 09 20:37:06 MST 2016) : 100
Avnet   (2016-12-08) : <1K
Digikey   (2016-12-08) : >1K
Mouser   (2016-12-08) : >1K
ON Semiconductor   (2016-12-07) : 986,500
PandS   (2016-12-08) : <1K
Market Leadtime (weeks) : 2 to 4
Arrow   (Fri Dec 09 20:37:06 MST 2016) : 100
Avnet   (2016-12-08) : >1K
Mouser   (2016-12-08) : >1K
ON Semiconductor   (2016-12-07) : 25,350
Datasheet: High-Voltage Switcher for Medium Power Offline SMPS Featuring Low Standby Power
Rev. 5 (520kB)
Product Overview
»View Reliability Data
»View Material Composition
»Product Change Notification (6)

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 Compensation 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-7
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-7
Previously Viewed Products
Clear List

Featured Video
PFC and LLC controller for ATX, Flat TV Power Conversion Evaluation Board - NCP1910GEVB Test Procedure

More Videos ...