Specification	PTB78520WAS

Applications	ITE (Commercial)
Current - Output (Max) [Max]	20 A
Efficiency	90 %
Features	OTP, Remote On/Off, OVP, UVLO, OCP
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	10-SMD Module
Power (Watts)	72 W
Size / Dimension [x]	2.22 in
Size / Dimension [x]	56.4 mm
Size / Dimension [y]	36.8 mm
Size / Dimension [y]	1.45 in
Size / Dimension [z]	12.6 mm
Size / Dimension [z]	0.49 in
Type	Isolated Module
Voltage - Input (Max) [Max]	60 V
Voltage - Input (Min) [Min]	18 V
Voltage - Isolation	1.5 kV
Voltage - Output 1 [Max]	3.6 V
Voltage - Output 1 [Min]	1.8 V

PTB78520W Series

20-A, 18-60-V Input Auto-Track Compatible Isolated DC/DC Converter

Part	Package / Case	Voltage - Output 1 [Min]	Voltage - Output 1 [Max]	Type	Voltage - Isolation	Operating Temperature [Max]	Operating Temperature [Min]	Efficiency	Current - Output (Max) [Max]	Power (Watts)	Mounting Type	Number of Outputs	Applications	Size / Dimension [y]	Size / Dimension [z]	Size / Dimension [x]	Size / Dimension [x]	Size / Dimension [y]	Size / Dimension [z]	Voltage - Input (Min) [Min]	Voltage - Input (Max) [Max]	Features
Texas Instruments PTB78520WAD	10-DIP Module	1.8 V	3.6 V	Isolated Module	1.5 kV	85 °C	-40 °C	90 %	20 A	72 W	Through Hole	1	ITE (Commercial)	36.8 mm	0.47 "	2.22 in	56.4 mm	1.45 in	12 mm	18 V	60 V
Texas Instruments PTB78520WAS	10-SMD Module	1.8 V	3.6 V	Isolated Module	1.5 kV	85 °C	-40 °C	90 %	20 A	72 W	Surface Mount	1	ITE (Commercial)	36.8 mm	0.49 in	2.22 in	56.4 mm	1.45 in	12.6 mm	18 V	60 V	OCP OTP OVP Remote On/Off UVLO

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tray	9	$ 193.83
Texas Instruments	TIW TRAY	1	$ 167.87
		100	$ 151.95
		250	$ 147.61
		1000	$ 144.72

Description

General part information

PTB78520W Series

The PTB78520W is a 20-A rated, wide-input (18-60 V) 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 PTB78520W module provides two outputs, each regulated to the same voltage. During power up, the voltage at ’VOBus’ rises first, allowing this output to provide input power to any downstream non-isolated module. The voltage from ’VOSeq’ is 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 PTB78520W includes many features expected of high-performance DC/DC converter modules. The combination of input-output isolation and a wide-input voltage range, allows operation from either +24 V or –48 V. The wideoutput 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 assured using Smart-Sense. This is a differential remote sense that will intelligently regulate the sequenced output, depending on its sequence status. Other operational features include an input under-voltage lockout (UVLO) and an output enable control. Over-current, over-voltage, and over-temperature protection assures the module’s ability to survive any load fault.

Documents

Technical documentation and resources

20-A, 18-60-V Input Auto-Track Compatible Isolated DC/DC Converter datasheet (Rev. A)

Data sheet