Analog Devices LTC7890 | Demoboard EVAL-LTC7890-BZ

Description

Evaluation circuit EVAL-LTC7890-BZ is a dual output synchronous step-down converter that drives N-channel silicon (Si) field effect transistors (FETs). The EVAL-LTC7890-BZ evaluation board features 100V logic-level Si FETs.EVAL-LTC7890-BZ features the LTC®7890: a low quiescent current, high frequency (programmable fixed frequency from 100kHz up to 3MHz), dual step-down DC/DC synchronous controller, with a dedicated driver feature for GaN FETs, which can also be used to drive logic-level silicon FETs. To evaluate the LTC7890 with GaN FETs, refer to the EVAL-LTC7890-AZ evaluation board, which does 12VOUT at 20A and 5VOUT at 20A.

Features

• GaN drive technology fully optimized for GaN FETs
• Wide VIN range: 4 V to 100 V
• Wide output voltage range: 0.8 V ≤ VOUT ≤ 60 V
• No catch, clamp, or bootstrap diodes needed
• Internal smart bootstrap switches prevent overcharging of high-side driver supplies
• Internally optimized, smart near zero dead times or resistor adjustable dead times
• Split output gate drivers for adjustable turn on and turn off driver strengths
• Accurate adjustable driver voltage and UVLO
• Low IQ: 5 μA (48 VIN to 5 VOUT, Ch 1 On)
• Programmable frequency (100 kHz to 3 MHz)
• Synchronizable frequency (100 kHz to 3 MHz)
• Spread spectrum frequency modulation
• 40-lead (6 mm × 6 mm), side wettable, QFN package

Typical applications

More information

• Datasheet
• IC product information