PTB48511BAZ [Texas Instruments]

The PTB4851x series are isolated DC/DC converter modules that operate from a standard telecom (-48 V) central office supply and provide up to 72 W of power in a balanced load configuration. They feature dual complementary outputs (±5V, ±12V, or ±15V), input voltage range of 36V to 75V, and 1500V DC isolation. The modules include On/Off enable control for sequencing, overcurrent protection, overtemperature shutdown, and undervoltage lockout. The PTB48511 adds output overvoltage protection. Designed for xDSL line driver applications, they use double-sided surface mount technology and come in industry standard outline packages that do not require heatsinks. The modules can synchronize with PTB48500 converters for system power sequencing.