EVAL-LTC3313EV-MULTI-AZ

产品详情

The EVAL-LTC3313EV-MULTI-AZ features the LTC3313, a 15 A, low-voltage, synchronous step-down Silent Switcher®, operating as a multiphase 2 MHz, 3.0 V to 5.5 V input, 1.2 V buck regulator. The EVAL-LTC3313EV-MULTI-AZ has three build options to provide 2-phase 30 A, 3-phase 45 A, or 4-phase 60 A output solutions. The LTC3313 supports adjustable output voltages from 0.5 V to input voltage (V_IN) and operating frequencies from 500 kHz up to 5 MHz in multiphase operation.

All phases of EVAL-LTC3313EV-MULTI-AZ operate in forced continuous mode at 2 MHz switching frequency (fSW). The LTC3313 can also synchronize to an external clock using a MODE/SYNC turret when the RT pin of the main phase is pulled up to the V_IN pin.

The EVAL-LTC3313EV-MULTI-AZ also has an electromagnetic interference (EMI) filter to reduce conducted EMI. This EMI filter can be included by applying the input voltage at the V_IN EMI terminal.

Figure 4 shows the efficiency of the circuit with a 3.3 V input for all three build options.

An on-board transient circuit is included to measure fast transient performance.

The LTC3313 data sheet gives a complete description of the part, operation, and application information. The data sheet must be read in conjunction with this user guide. The LTC3313 is assembled in a 3 mm × 3 mm LQFN package with exposed pads for low thermal resistance. The layout recommendations for low EMI operation and maximum thermal performance are available in the LTC3313 data sheet.