LTC3706 - Secondary-Side Synchronous Forward Controller with Polyphase Capability

The LTC3706 provides remote sensing, accurate power good and overvoltage monitoring circuits to support precision, high current applications. A linear regulator controller with thermal protection is also provided to simplify the generation of secondary-side bias voltage.

The LTC3706 is available in a 24-lead SSOP package.

Features
  • Secondary-Side Control for Fast Transient Response
  • Self-Starting Architecture Eliminates Need for Separate Bias Regulator
  • Proprietary Gate Drive Encoding Scheme Reduces System Complexity
  • PolyPhase® Operation Reduces CIN Requirements
  • Current Mode Control Ensures Current Sharing
  • PLL Fixed Frequency: 100kHz to 500kHz
  • ±1% Output Voltage Accuracy
  • True Remote Sense Differential Amplifier
  • Power Good Output Voltage Monitor
  • High Voltage Linear Regulator Controller
  • Wide Supply Range: 5V to 30V
  • Available in a Narrow 24-Lead SSOP Package
Typical Application
Applications
  • Isolated 48V Telecommunication Systems
  • Internet Servers and Routers
  • Distributed Power Step-Down Converters
  • Automotive and Heavy Equipment
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC3706EGN#PBFSSOP-24E$5.54$3.88
LTC3706EGN#TRPBFSSOP-24E$3.98
LTC3706IGN#PBFSSOP-24I$6.11$4.28
LTC3706IGN#TRPBFSSOP-24I$4.38
Demo Boards
Part NumberDescriptionPrice
DC776ALTC3705EGN/LTC3706EGN Demo Board | Forward Converter with Secondary Side Control, 36V ≤ VIN ≤72V, Vout = 1.5V @ 45A$225.00
DC888A-ALTC3725EMSE/LTC3706EGN Demo Board | 1/4 Brick, 36V ≤ Vin ≤ 72V, Vout: 3.3V/50AContact Factory
DC888A-BLTC3725EMSE/LTC3706EGN Demo Board | 1/4 Brick, 36V ≤ Vin ≤ 72V, Vout: 5V/40AContact Factory
DC888A-CLTC3725EMSE/LTC3706EGN Demo Board | 1/4 Brick, 36V ≤ Vin ≤ 72V, Vout: 12V/20AContact Factory
Datasheet
Design Note
Reliability Data
LT Journal
Press Release
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LTC3706 Footprints and Symbols