IRS27951

600V Half Bridge High Voltage Controller IC for Fixed/Variable Frequency DC-DC Resonant Converters with Overcurrent Vs Threshold Fixed at 2V

ParametricIRS27951
VCC  min  max10.0V  20.0V
Adjustable Dead Time200-2000
OCP Threshold2.0V
Output Current (Source)300.0mA
Package8-lead SOIC
Frequency  min  max25.0kHz  500.0kHz
Output Current (Sink)900.0mA
Sales Product NameIRS27951
OPNIRS27951STRPBF
Product Statusactive
Package NameSOIC 8N
Completely lead freeyes
Halogen freeyes
RoHS compliantyes
Packing Size2500
Packing TypeTAPE & REEL
Moisture Level2
OPNIRS27951SPBF
Product Statusdiscontinued
Package NameSOIC 8N
Completely lead freeyes
Halogen freeyes
RoHS compliantyes
Packing Size95
Packing TypeTUBE
Moisture Level2
Benefits:
  • Simple primary-side control solution for fixed and variable frequency DC-DC resonant converters.
  • Max 500kHz per channel output with 50% duty cycle
  • Floating channel bootstrap operation up to +600Vdc
  • Programmable minimum and maximum switching frequency
  • Programmable soft start frequency and soft start time
  • Programmable dead time
  • Micropower start-up and ultra low quiescent current
  • Over-current protection using low side MOSFET Rds(on)
  • User initiated micropower "Sleep mode"
  • Under-voltage Lockout
  • Simple design with minimal component count.
  • Lead-free
Target Applications:
  • Primary Side
Diagrams
Data Sheet
TitleSizeDateVersion
Data Sheet - IRS27951,EN1 MB16 Nov 2012
Application Notes
TitleSizeDateVersion
Design of Resonant Half-Bridge converter using IRS2795(1,2) Control ICEN666 KB09 Oct 2010
Evaluation Boards
BoardFamilyDescriptionStatus
IRAC27951SREmploying IRS27951SPbF Resonant Half Bridge controller HVIC and the IR11682S. Input voltage range: 350-420VDC or 250V-300Vac. Outputs: 24V/10A. Switching frequency range: 70KHz-150Khz. 95% efficiency without heatsink.IRS27951active
EN IRS279524
EN IRS27952