PTQA430033 100-W 48-V Input Isolated DC-DC Converter |

This product continues to be in production to support existing customers.
100-W 48-V Input Isolated DC-DC Converter


This product is not recommended for new designs.

Replaced By PTEA420033 – The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.

TI does not recommend using this part in a new design. This product continues to be in production to support existing customers.


The PTQA series of power modules are single-output isolated DC/DC converters, housed in an industry standard quarter-brick package. These modules are rated up to 100W with a maximum load current of up to 30 A.

The PTQA series operates from a standard 48-V telecom central office (CO) supply and occupies only 3.3 in2 of PCB area. The modules offer OEMs a compact and flexible high-output power source in an industry standard footprint. They are suitable for distributed power applications in both telecom and computing environments, and may be used for powering high-end microprocessors, DSPs, general purpose logic and analog.

Features include a remote On/Off control with optional logic polarity, an undervoltage lockout (UVLO), a differential remote sense, and an industry standard output voltage adjustment using an external resistor. Protection features include output overcurrent protection (OCP), overvoltage protection (OVP), and thermal shutdown (OTP).

The modules are fully integrated for stand-alone operation, and require no additional components.


  • 100-W Output
  • Input Voltage Range: 36 V to 75 V
  • 92% Efficiency
  • 1500 Vdc Isolation
  • Fast Transient Response
  • On/Off Control
  • Overcurrent Protection
  • Differential Remote Sense
  • Adjustable Output Voltage
  • Output Overvoltage Protection
  • Over-Temperature Shutdown
  • Undervoltage Lockout
  • Standard 1/4-Brick Footprint
  • UL Safety Agency Approval