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NCP1031: Integrated DC-DC Converter for PoE and Telecom

Datasheet: Integrated DC-DC Converter - Power over Ethernet and Telecom
Rev. 11 (244kB)
Product Overview
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» Product Change Notification
The NCP1030 and NCP1031 are a family of miniature high-voltage monolithic dc-dc converters with on-chip power switch and start-up circuits. The NCP103x family incorporates in a single IC all the active power, control logic and protection circuitry required to implement, with minimal external components, several switching regulator applications, such as a secondary side bias supply or a low power dc-dc converter.

This controller family is ideally suited for 48 V telecom, 42 V automotive, 12 V input and Power Over Ethernet (PoE) applications. The NCP103x can be configured in any single-ended topology such as forward or flyback. The NCP1030 is targeted for applications requiring up to 3 W, and the NCP1031 is targeted for applications requiring up to 6 W.

The internal error amplifier allows the NCP103x family to be easily configured for secondary or primary side regulation operation in isolated and non-isolated configurations. The fixed frequency oscillator is optimized for operation up to 1 MHz and is capable of external frequency synchronization, providing additional design flexibility. In addition, the NCP103x incorporates individual line undervoltage and overvoltage detectors, cycle by cycle current limit and thermal shutdown to protect the controller under fault conditions. The preset current limit thresholds eliminate the need for external sensing components.
Features   Benefits
     
  • On Chip High 200 V Power Switch Circuit and Startup Circuit
 
  • No external circuitry needed for high voltage start up
  • External Frequency Synchronization up to 1 MHz
 
  • Optimization of switching frequency for size and efficiency
  • Internal Startup Regulator with Auxiliary Winding Override
 
  • Smaller PCB footprint
  • Trimmed 2% Internal Reference
 
  • Accurate output voltage
  • Line Under/Over Voltage Lockout
 
  • System level protection
  • Cycle by Cycle Current Limit
 
  • System level protection
  • Over Temperature Protection
 
  • System level protection
  • Internal Error Amplifier
 
  • Smaller PCB footprint
  • Primary or Secondary Regulation
 
  • Flexibility in implementation
  • Excel Based Design Tool Available
   
Applications   End Products
  • Stand Alone Low Power dc−dc Converter
  • Low Power Bias Supply
  • Low Power Boost Converter
 
  • POE (Power Over Ethernet)/PD. Refer to Application Note AND8247.
  • Secondary Side Bias Supply for Isolated dc-dc Converters
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
NCP1031POEEVB Active
6.5 W PoE DC-DC Converter Evaluation Board
Availability & Samples
Specifications
Case Outlines
Application Diagram
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP1031DR2G Active
Pb-free
Halide free
NCP1031 SOIC-8 751-07 1 260 Tape and Reel 2500 $0.8
NCP1031MNTXG Active
Pb-free
Halide free
NCP1031 DFN-8 488AF 1 260 Tape and Reel 4000 $0.9866
Market Leadtime (weeks) : 8 to 12
Avnet   (2020-08-19 00:00) : >1K
PandS   (2020-09-14 00:00) : >1K
Market Leadtime (weeks) : 4 to 8
PandS   (2020-09-14 00:00) : >1K

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Control Mode
VCC Min (V)
VCC Max (V)
VO Typ (V)
IO Typ (A)
Efficiency (%)
fSW Typ (kHz)
Package Type
NCP1031DR2G  
 $0.8 
Pb
H
 Active   
Flyback
Step-Down
Step-Up
Voltage Mode
8
200
12
1
85
Up to 1000
SOIC-8
NCP1031MNTXG  
 $0.9866 
Pb
H
 Active   
Flyback
Step-Down
Step-Up
Voltage Mode
8
200
12
1
85
Up to 1000
DFN-8
Case Outlines
751-07    488AF   
Packages
NCP1031: Integrated DC-DC Converter for PoE and Telecom
NCP1031: Integrated DC-DC Converter for PoE and Telecom
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Featured Video
Power Over Ethernet Solutions with the NCP1031POEEVB Evaluation Board
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