LTC7891

The evaluation circuit EVAL-LTC7891-BZ features the LTC^®7891, which is a 100V capable step-down synchronous gallium nitride (GaN) field effect transistor (FET) controller. In this application, the IC is optimized with 40V GaN FETs to operate within the 15V–36V input range at 800kHz. The LTC7891 is specifically designed to drive GaN FETs safely and easily through internally optimized bootstrap switches and smart dead time control. Split gate drivers allow FETs to be turned on or off easily. Additionally, the IC features low I_Q, up to 3MHz programmable/synchronizable switching frequency, spread spectrum, and a small 28-lead (4mm x 5mm) side wettable QFN package. These features promote a wide variety of applications, including industrial, military, medical, and telecommunications systems.

The EVAL-LTC7891-BZ operates from a 15V–36V input range and generates a maximum 12V, 25A output. The LTC7891 has a precision voltage reference that can generate an output voltage with 2% tolerance over the full operating conditions. The EVAL-LTC7891-BZ is set to 800kHz switching frequency, resulting in a small and efficient circuit. The converter achieves over 97% efficiency with 25A load at full operating V_IN, with a peak efficiency near 99%.

This board can be easily modified to regulate output voltages from 0.8V to 15V. Various FETs of a similar footprint can be used to fit an array of applications. An alternate molded core inductor footprint can be utilized for lower-profile designs. For higher input voltage applications, refer to the EVAL-LTC7891-AZ version designed for wider input and output voltage ranges at a lower switching frequency.

The EVAL-LTC7891-BZ provides a high-performance, cost-effective solution for generating a 12V output. The LTC7891 data sheet gives a complete description of the part, its operation, and application information. Use the data sheet in conjunction with this user guide.

Design files for this circuit board are available at www.analog.com.

The evaluation circuit EVAL-LTC7891-BZ features the LTC^®7891, which is a 100V capable step-down synchronous gallium nitride (GaN) field effect transistor (FET) controller. In this application, the IC is optimized with 40V GaN FETs to operate within the 15V–36V input range at 800kHz. The LTC7891 is specifically designed to drive GaN FETs safely and easily through internally optimized bootstrap switches and smart dead time control. Split gate drivers allow FETs to be turned on or off easily. Additionally, the IC features low I_Q, up to 3MHz programmable/synchronizable switching frequency, spread spectrum, and a small 28-lead (4mm x 5mm) side wettable QFN package. These features promote a wide variety of applications, including industrial, military, medical, and telecommunications systems.

The EVAL-LTC7891-BZ operates from a 15V–36V input range and generates a maximum 12V, 25A output. The LTC7891 has a precision voltage reference that can generate an output voltage with 2% tolerance over the full operating conditions. The EVAL-LTC7891-BZ is set to 800kHz switching frequency, resulting in a small and efficient circuit. The converter achieves over 97% efficiency with 25A load at full operating V_IN, with a peak efficiency near 99%.

This board can be easily modified to regulate output voltages from 0.8V to 15V. Various FETs of a similar footprint can be used to fit an array of applications. An alternate molded core inductor footprint can be utilized for lower-profile designs. For higher input voltage applications, refer to the EVAL-LTC7891-AZ version designed for wider input and output voltage ranges at a lower switching frequency.

The EVAL-LTC7891-BZ provides a high-performance, cost-effective solution for generating a 12V output. The LTC7891 data sheet gives a complete description of the part, its operation, and application information. Use the data sheet in conjunction with this user guide.

Design files for this circuit board are available at www.analog.com.

Evaluation circuit EVAL-LTC7891-AZ features the LTC®7891: a 100V Step-Down Synchronous GaN FET controller. The LTC7891 is specifically designed to drive up to 100V GaN FETs safely and easily through internally optimized bootstrap switches and smart dead time control. Split gate drivers allow for easily adjustable turn-on and turn-off of FETs. Additionally, the IC features low I_Q, up to 3MHz programmable/synchronizable switching frequency, spread spectrum, and a small 28-lead (4mm x 5mm) side wettable QFN package. These features allow for a wide variety of applications including industrial, military, medical, and telecommunications systems.

The EVAL-LTC7891-AZ operates from a 15V to 72V input voltage range and generates a 12V, 20A output. The LTC7891 has a precision voltage reference which can generate an output voltage with 2% tolerance over the full operating conditions. The EVAL-LTC7891-AZ is set to 500kHz switching frequency, which results in a small and efficient circuit. The converter achieves over 96% efficiency with 20A load at full operating VIN, with a peak efficiency of over 99%.

This board can be easily modified to regulate output voltages from 0.8V to 60V. The evaluation circuit has been specially designed with 100V EPC GaN FET form factor. Various FETs of similar footprint can be replaced to fit a wide array of applications.

The EVAL-LTC7891-AZ provides a high-performance cost-effective solution for generating a 12V output. The LTC7891 data sheet gives a complete description of this part, its operation, and application information. The data sheet must be read in conjunction with this user guide for EVAL-LTC7891-AZ. Design files for this circuit board are available at www.analog.com.

Evaluation circuit EVAL-LTC7891-AZ features the LTC®7891: a 100V Step-Down Synchronous GaN FET controller. The LTC7891 is specifically designed to drive up to 100V GaN FETs safely and easily through internally optimized bootstrap switches and smart dead time control. Split gate drivers allow for easily adjustable turn-on and turn-off of FETs. Additionally, the IC features low I_Q, up to 3MHz programmable/synchronizable switching frequency, spread spectrum, and a small 28-lead (4mm x 5mm) side wettable QFN package. These features allow for a wide variety of applications including industrial, military, medical, and telecommunications systems.

The EVAL-LTC7891-AZ operates from a 15V to 72V input voltage range and generates a 12V, 20A output. The LTC7891 has a precision voltage reference which can generate an output voltage with 2% tolerance over the full operating conditions. The EVAL-LTC7891-AZ is set to 500kHz switching frequency, which results in a small and efficient circuit. The converter achieves over 96% efficiency with 20A load at full operating VIN, with a peak efficiency of over 99%.

This board can be easily modified to regulate output voltages from 0.8V to 60V. The evaluation circuit has been specially designed with 100V EPC GaN FET form factor. Various FETs of similar footprint can be replaced to fit a wide array of applications.

The EVAL-LTC7891-AZ provides a high-performance cost-effective solution for generating a 12V output. The LTC7891 data sheet gives a complete description of this part, its operation, and application information. The data sheet must be read in conjunction with this user guide for EVAL-LTC7891-AZ. Design files for this circuit board are available at www.analog.com.