EVAL-LTC7892-BZ

EVAL-LTC7892-BZ evaluation circuit features the LTC®7892. The LTC7892 is a 100V step-up synchronous Gallium Nitride (GaN) field effect transistor (FET) controller optimized in this application with 100V GaN FETs for an operational 9V–36V input range at 500KHz. The EVALLTC7892-BZ is specifically designed to drive GaN FETs safely and easily up to 1.4KW power levels through internally optimized bootstrap switches and adaptive time control. Split gate drivers allow for easily adjustable turn-on and turn-off of FETs. Additionally, the IC features low IQ, up to 3MHz programmable/synchronizable switching frequency, spread spectrum, and a small 40-lead side wettable QFN package. These features allow various applications, including industrial, military, medical, and telecommunications systems. The EVAL-LTC7892-BZ operates from a 9V–36V input voltage range and generates a maximum 48V, 30A output. This board can be easily modified to regulate output voltages from 1.2V to 90V.

• 20A maximum recommended output current level (VIN = 24V, heatsink, maximum temperature < 100°C)
• 400mVP-P max output voltage ripple (peak-to-peak) at VIN = 24V, IOUT = 16A (force continuous mode)
• 8.6V typical run rising threshold, 7.8V typical run falling threshold
• 500KHz typ switching frequency at JP2=disable SS (spread spectrum frequency modulation (SSFM) off)
• 98% typical efficiency at V = 36V, IOUT = 26A
• Provides a high-performance cost-effective solution for generating a 48V output
• Various FETs of a similar footprint can be used to fit a wide array of applications