Laterally diffused metal oxide semiconductor (LDMOS) is a dominant device technology used in high-power RF power amplifier applications for cellular infrastructure.
The ADH700 series nominal 28V model can deliver up to 28A output current and offers a wide trim range of 14 to 33V. It measures 61.0 x 57.9 x 12.7mm.
The DC/DC converter series is able to offer greater than 95% typical efficiency and an input range of 36 to 65V.
The modules have an aluminum baseplate structure and the 28V model can operate between temperatures ranging from -40 and 85°C and can continue to operate at full power up to 100°C baseplate temperature – all without air cooling.
The conversion technology employs 280kHz fixed-frequency switching to help minimise external EMI filtering requirements.
Other features include remote enable, remote output sense and trim with protection features such as input under voltage lockout, output over current protection, output over voltage protection, and over temperature protection. No minimum load requirement is said to help increase reliability and contributes to an MTBF of 2million hours.
