PTB48520W Series

25-A, 48-V Input Isolated DC/DC Converter with Auto-Track™ Sequencing

Catalog

25-A, 48-V Input Isolated DC/DC Converter with Auto-Track™ Sequencing

Part	Mounting Type	Power (Watts)	Efficiency	Voltage - Input (Min) [Min]	Package / Case	Voltage - Output 1 [Min]	Voltage - Output 1 [Max]	Number of Outputs	Voltage - Input (Max) [Max]	Current - Output (Max) [Max]	Applications	Size / Dimension [y]	Size / Dimension [x]	Size / Dimension [x]	Size / Dimension [y]	Size / Dimension [z]	Size / Dimension [z]	Type	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Isolation
Texas Instruments PTB48520WAS	Surface Mount	90 W	91 %	36 V	10-SMD Module	1.8 V	3.6 V	1	75 V	25 A	ITE (Commercial)	1.45 in	2.22 in	56.4 mm	36.8 mm	0.5 in	12.7 mm	Isolated Module	85 °C	-40 °C	1.5 kV
Texas Instruments PTB48520WAH	Through Hole	90 W	91 %	36 V	10-DIP Module	1.8 V	3.6 V	1	75 V	25 A	ITE (Commercial)	1.45 in	2.22 in	56.4 mm	36.8 mm	0.47 "	12 mm	Isolated Module	85 °C	-40 °C	1.5 kV

Catalog

25-A, 48-V Input Isolated DC/DC Converter with Auto-Track™ Sequencing

Key Features

• Input Voltage: 36 V to 75 V25-A Total Output Current91% EfficiencyWide-Adjust Output Voltage: 1.8 V to 3.6 VOvercurrent ProtectionOutput Overvoltage ProtectionOvertemperature ShutdownOutput Enable ControlAuto-Track Compatible Sequenced OutputSmart-Sense Remote SensingUndervoltage LockoutIndustry Standard SizeSurface Mountable1500-Vdc IsolationAgency Approvals (Pending):UL/cUL 60950, EN 60950APPLICATIONS3.3-V Intermediate Bus ArchitecturesTelecom, High-End Computing PlatformsMulti-Rail Power Systems with Power-Up SequencingAuto-Track is a trademark of Texas Instruments.Input Voltage: 36 V to 75 V25-A Total Output Current91% EfficiencyWide-Adjust Output Voltage: 1.8 V to 3.6 VOvercurrent ProtectionOutput Overvoltage ProtectionOvertemperature ShutdownOutput Enable ControlAuto-Track Compatible Sequenced OutputSmart-Sense Remote SensingUndervoltage LockoutIndustry Standard SizeSurface Mountable1500-Vdc IsolationAgency Approvals (Pending):UL/cUL 60950, EN 60950APPLICATIONS3.3-V Intermediate Bus ArchitecturesTelecom, High-End Computing PlatformsMulti-Rail Power Systems with Power-Up SequencingAuto-Track is a trademark of Texas Instruments.

Description

The PTB48520W is a 25-A rated, 48-V input isolated dc/dc converter that incorporates Auto-Track™ power-up sequencing. This allows these modules to simultaneously power up with any other downstream non-isolated, Auto-Track compliant module. The PTB48520W module provides two outputs, each regulated to the same voltage. During power up, the voltage atVoBusrises first, allowing this output to provide input power to any downstream non-isolated module. The voltage fromVoSeqis then allowed to rise simultaneously, under the control of Auto-Track, along with the outputs from the downstream modules. Whether used to facilitate power-up sequencing, or operated as a stand-alone module, the PTB48520W includes many features expected of high-performance dc/dc converter modules. The wide output adjust enables the output voltage to be set to to any voltage over the range, 1.8 V to 3.6 V, using a single external resistor. Precise output voltage regulation is ensured with a differential remote sense that intelligently regulates the sequenced output, depending on its sequence status. Other operational features include an input undervoltage lockout (UVLO) and an output enable control. Overcurrent, overvoltage, and overtemperature protection ensures the module ability to survive any load fault. Typical applications include distributed power architectures in both telecom and computing environments, particularly complex digital systems requiring power sequencing of multiple power supply rails. The PTB48520W is a 25-A rated, 48-V input isolated dc/dc converter that incorporates Auto-Track™ power-up sequencing. This allows these modules to simultaneously power up with any other downstream non-isolated, Auto-Track compliant module. The PTB48520W module provides two outputs, each regulated to the same voltage. During power up, the voltage atVoBusrises first, allowing this output to provide input power to any downstream non-isolated module. The voltage fromVoSeqis then allowed to rise simultaneously, under the control of Auto-Track, along with the outputs from the downstream modules. Whether used to facilitate power-up sequencing, or operated as a stand-alone module, the PTB48520W includes many features expected of high-performance dc/dc converter modules. The wide output adjust enables the output voltage to be set to to any voltage over the range, 1.8 V to 3.6 V, using a single external resistor. Precise output voltage regulation is ensured with a differential remote sense that intelligently regulates the sequenced output, depending on its sequence status. Other operational features include an input undervoltage lockout (UVLO) and an output enable control. Overcurrent, overvoltage, and overtemperature protection ensures the module ability to survive any load fault. Typical applications include distributed power architectures in both telecom and computing environments, particularly complex digital systems requiring power sequencing of multiple power supply rails.