PT4660 Series
30-A Dual Output Isolated
DC/DC Converter
SLTS140C – MAY 2001 – REVISED OCTOBER 2003
Features
•
Dual 15-A Outputs
(Independantly Regulated)
•
Power-up/Down Sequencing
•
Input Voltage Range:
36 V to 75 V
•
1500 VDC Isolation
•
Temp Range: –40 to 100 °C
•
High Efficiency: 88 %
•
Fixed Frequency Operation
•
Over-Current Protection
(Both Outputs)
•
Dual Logic On/Off Control
•
Over-Temperature Shutdown
•
Over-Voltage Protection
(Coordinated Shutdown)
•
Under-Voltage Lockout
•
Input Differential EMI Filter
•
IPC Lead Free 2
•
Safety Approvals:
UL1950
CSA 22.2 950
Description
The PT4660 Excalibur™ Series
is a 30-A rated, dual-output isolated
DC/DC converter that combines
state-of-the-art power conversion
technology with unparalleled flex-
ibility. These modules operate from
a standard telecom (–48 V) central
office (CO) supply to produce two
independantly regulated outputs.
The PT4660 series is characterized
with high efficiencies and ultra-fast
transient response, and incorporates
many features to facilitate system
integration. These include a flexible
“On/Off” enable control, output
current limit, over-temperature
protection, and an input under-voltage
lockout (UVLO). In addition, both
output voltages are designed to meet
the power-up/power-down sequenc-
ing requirements of popular DSPs.
The PT4660 series is housed in
space-saving solderable copper case.
The package does not require a
heatsink and is available in both
vertical and horizontal configura-
tions, including surface mount. The
‘N’ configuration occupies less than 2
in² of PCB area.
Ordering Information
Pt. No.
PT4661o
PT4662o
PT4663o
PT4665o
PT4666o
PT4667o
PT4668o
=
=
=
=
=
=
=
Vo
1
/Vo
2
5.0/3.3 Volts
3.3/2.5 Volts
3.3/1.8 Volts
3.3/1.5 Volts
2.5/1.8 Volts
5.0/1.8 Volts
3.3/1.2 Volts
PT Series Suffix
(PT1234
x
)
Case/Pin
Configuration
Vertical
Horizontal
SMD
Order
Suffix
Package
Code
(EKD)
(EKA)
(EKC)
N
A
C
(Reference the applicable package code draw-
ing for the dimensions and PC board layout)
Typical Application
V
1
Adjust
V
2
Adjust
20
Vo
2
adj
13
Vo
1
adj
Vo
1
9–12
+ V
IN
Vo
1
Vo
2
1
+Vin
Vo
2
21–24
PT4660
3
4
EN 1*
EN 2
–Vin
COM
14–19
L
O
A
D
L
O
A
D
– V
IN
2
COM
* Inverted logic
For technical support and further information, visit http://power.ti.com
TI [ TEXAS INSTRUMENTS ]
