This EVK has been developed for ROHM’s non-synchronous buck DC/DC converter customers evaluating BD9G401EFJ-M
While the BD9G401EFJ-M accepts a power supply input range of 4.5V to 42V, and generates output voltages from 1V to VCC (Note 1), this EVK is setup for the input voltage range of 10V to 42V and a fixed output of 5V can be produced. The IC has internal 140mΩ N-channel MOSFET and the operating frequency is fixed 300kHz. A fixed Soft Start circuit prevents inrush current during startup along with UVLO (under voltage lock out) and TSD (thermal shutdown detection), OCP (over current protection) protection circuits. The under voltage lock out and hysteresis can be set by external resistor using EN pin. EN pin allows for simple ON/OFF control of the IC to reduce standby current consumption. In addition, it has a synchronization function with an external clock that provides noise management.
(Note 1) Restricted by Maximum duty cycle. About the restriction of input/output voltage by maximum duty cycle, refer to p.10 of the datasheet Rev.002
Request similar boards:
BD9F500QUZ-EVK-001 with 1 V output from 12 V input
BD9G101G-EVK-101 with 1 V to 0.7 V output from 6 V to 42 V input