SLTS092B Datasheet, PDF (1/9 Pages) Texas Instruments – 20-W 48-V Input Isolated DC/DC Converter

PT4120 Series
20-W 48-V Input Isolated
DC/DC Converter
SLTS092B
(Revised 2/26/2002)
Features
• Input Voltage Range:
36V to 75V
• 20W Rated
• 82% Efficiency
• 1500 VDC Isolation
• Low Profile (8.5 mm)
• Small Footprint: 1.52in x 1.73in
• Remote On/Off
• Short Circuit Protection
• Over Temperature Shutdown
• Under-Voltage Lockout
• UL1950 Recognized
• CSA 22.2 950 Certified
• EN60950 Approved
• 4×10⁶ Hrs MTBF
Description
The PT4120 power modules are a series
of isolated DC/DC converters housed a low-
profile package. Rated for 20 watts or 5A, the
series includes standard output voltages rang-
ing from as low as 1.5VDC to 15VDC. The
output may be adjusted ±10% of nominal.
These converters are ideal for Telecom,
Industrial, Computer, and other distributed
power applications that require input-to-
output isolation.
Using multiple PT4120 modules, system
designers can implement a complete custom
power supply solution. The flexibility of full
isolation also allows the input or output to be
configured for negative voltage operation.
The PT4120 series requires no additional
components for proper operation.
Ordering Information
PT4121H = 3.3V/5A (16.5W)
PT4122H = 5.0V/4A
PT4123H = 12.0V/1⋅6A
PT4124H = 15.0V/1⋅3A
PT4125H = 5.2V/3·8A
PT4126H = 1.5V/5A (7.5W)
PT4127H = 1.8V/5A (9W)
PT4128H = 2.5V/5A (12.5W)
PT4129H = 1.65V/5A (8·25W)
PT Series Suffix (PT1234x )
Case/Pin
Configuration
Order
Suffix
Package
Code *
Horizontal
SMD
A
(EGD)
C
(EGE)
* Previously known as package style 710.
(Reference the applicable package code draw-
ing for the dimensions and PC board layout)
Pin-Out Information
Pin Function
1 Remote On/Off ^†
2 –Vin
3 +Vin
4 –Vout
5 +Vout
6 Vout Adjust ^†
† For further information, see
application notes.
Standard Application
+V_IN
3
–V_IN
2
Remote
On/Off
PT4120
1
6
Q₁
BSS138
5
+V_OUT
4
–V_OUT
LOAD
V_OAdj
For technical support and more information, see inside back cover or visit www.ti.com