LTC3706 Datasheet | Linear Technology

FEATURES n Secondary-Side Control for Fast Transient Response n Self-Starting Architecture Eliminates Need for Separate Bias Regulator n Proprietary Gate Drive Encoding Scheme Reduces System plexity n Poly Phase® Operation Reduces CIN Requirements n Current Mode Control Ensures Current Sharing n PLL Fixed Frequency: 100k Hz to 500k Hz n ±1% Output Voltage Accuracy n True Remote Sense Differential Amplifier n Power Good Output Voltage Monitor n High Voltage Linear Regulator Controller n Wide Supply Range: 5V to 30V n Available in a Narrow 24-Lead SSOP Package APPLICATIONS n Isolated 48V Telemunication Systems n Internet Servers and Routers n Distributed Power Step-Down Converters n Automotive and Heavy Equipment L, LT, LTC, LTM, Poly Phase, Burst Mode, Linear Technology and the Linear logo are registered trademarks and No RSENSE and Thin SOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6144194, other patents pending. LTC3706 Secondary-Side Synchronous Forward Controller with Poly Phase Capability DESCRIPTION The LTC®3706 is a Poly Phase capable secondary-side controller for synchronous forward converters. When used in conjunction with the LTC3705 gate driver and primaryside controller, the part creates a plete isolated power supply that bines the power of Poly Phase operation with the speed of secondary-side control. The LTC3706 has been designed to simplify the design of highly efficient, secondary-side forward converters. Working in concert with the LTC3705, the LTC3706 forms a robust, self-starting converter that eliminates the need for the separate bias regulator that is monly used in secondary-side control applications. In addition, a proprietary scheme is used to multiplex gate drive signals and DC bias power across the isolation barrier through a single, tiny pulse transformer. The LTC3706 provides remote sensing, accurate power good and...