This document provides detailed information about the PTB4850x power modules, including input voltage range, output current, and operating temperature.
The document describes the PTB48500, PTB48501, and PTB48502 modules, which are dual-output isolated DC/DC converters designed to provide logic supply voltages for AC-7 based xDSL applications. These modules operate from a standard 48-V telecom central office (CO) supply and feature independent output regulation.
Key features include over-current protection, over-temperature shutdown, under-voltage lockout, and power-up/down sequencing capabilities. The converters are designed to be used in combination with PTB4851x modules to form a complete power solution for powering up to 64 DSL ports.
| Isolation Voltage | 1500 VDC |
|---|---|
| Operating Temperature Range | -40 to +85 °C |
| Switching Frequency | 500 kHz to 600 kHz |
The isolation voltage between input-output and input-case is rated at 1500 VDC.
Yes, the modules feature Power-up/Down Sequencing to control startup.