Demo Circuit 3091A features the LTC3312SA, 5V, dual 6A/dual-phase 12A step-down DC/DC regulator IC. This demo circuit is configured as a 2MHz, 3.3V input buck regulator with dual 6A output at 1.2V and 1.8V.
The LTC3312SA features dual monolithic synchronous 6A step-down power stages in a 3mm × 4mm package for space saving applications with demanding performance requirements. Both bucks achieve high efficiency and fast transient response with small external components. The LTC3312SA can also be configured as a single output, dual-phase 12A step-down converter. Please refer to DC3092A as a single output dual-phase application example. The LTC3312SA data sheet gives a complete description of its operation and application information. The data sheet must be read in conjunction with the demo manual when evaluating or modifying this demo circuit.
DC3091A supports three operation modes, including pulse skip, forced continuous and Burst Mode® operation. The clock frequency and the operation mode are shared by both regulators. User can select desired operation mode with JP1 jumper. Setting JP1 to FC/SYNC position also allows the LTC3312SA to sync to a clock frequency from 1MHz to 3MHz, operating in forced continuous mode.
An EMI filter is included in this demo circuit for noise sensitive applications. To power with EMI filter, please apply input voltage via VIN EMI terminal.
Documentation & Resources
DC3091A - Schematic4/1/2022130 K
DC3091A - Demo Manual (Rev. 0)4/1/20221 M
DC3091A - Design Files4/1/2022ZIP3 M
Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.