|
PTB48600A Datasheet, PDF (2/10 Pages) Texas Instruments – 85 W Dual Complementary-Output DC/DC Converter for DSL | |||
|
◁ |
Not Recommended for New Designs
PTB48600 â48-V Input
85 W Dual Complementary-Output
DC/DC Converter for DSL
SLTS239 JANUARY 2005
Ordering Information
Base Pt. No. (PTB4860âxxx)
Order Prefix
Description
PTB48600xxx Basic Model
Output Voltage (PTB48600âxx)
Code
Voltage
A
±5 V
Package Options (PT48600Aââ)
Code Description
Pkg Ref. (1)
AH Horiz. T/H
AS
SMD, Standard (2)
(ERT)
(ERU)
Notes: (1) Reference the applicable package reference drawing for the dimensions and PC board layout
(2) âStandardâ option specifies 63/37, Sn/Pb pin solder material.
Pin Descriptions
+VI: The positive input supply for the module with respect
to âVI. When powering the module from a â48 V telecom
central office supply, this input is connected to the primary
system ground.
âVI: The negative input supply for the module, and the
0 VDC reference for the âEnable*â, and âSync Inâ signals.
When the module is powered from a +48-V supply, this
input is connected to the 48-V Return.
+VO: The positive output supply voltage, which is refer-
enced to the âCOMâ node. The voltage at â+VOâ has the
same magnitude, but is the complement to that at â-VOâ.
âVO: The negative output supply voltage, which is refer-
enced to the âCOMâ node. The voltage at â-VOâ has the
same magnitude, but is the complement to that at â+VOâ.
COM: The secondary return reference for the moduleâs
regulated output voltages. This node is dc isolated from
the input supply pins.
±VO Adjust: Using a single resistor, this pin allows the
magnitude of both â+VOâ and ââVOâ to be adjusted to-
gether, either higher or lower than their preset value. If
not used, this pin should be left open circuit.
Enable*: This is an open-collector (open-drain) negative
logic input that enables the module output. This pin is
referenced to -VI. A logic â0â at this pin enables the
moduleâs outputs, and a high impedance disables the
outputs. If this feature is not used the pin should be con-
nected to âVI. Note: Connecting this input directly to the
âEN Outâ pin of the PTB4850x enables the output voltages
from both converters (PTB4850x and PTB48600) to power
up in sequence.
Sync In: This pin is used when the PTB48600 and PTB4850x
DC/DC converter modules are used together. Connect-
ing this pin to the âSync Outâ of the PTB4850x module
allows the PTB48600 to be synchronized to the same
switch conversion frequency as the PTB4850x.
Environmental and General Specifications (Unless otherwise stated, all voltages are with respect to âVI)
Characteristics
Symbols
Conditions
Min
Typ
Input Voltage Range
Isolation Voltage
Capacitance
Resistance
Operating Temperature Range
Over-Temperature Protection
Solder Reflow Temperature
Storage Temperature
Mechanical Vibration
Mechanical Shock
Weight
Flammability
VI
TA
OTP
TREFLOW
TS
â
â
Over output load range
36
Inputâoutput/inputâcase
1500
Input to output
â
Input to output
10
Over Vin Range
â40
Shutdown threshold
â
Hysterisis
â
Surface temperature of module body or pins
â
â40
Mil-STD-883D, Method 2007.2
20-2000 Hz
T/H â
SMD â
Per Mil-STD-883D, Method 2002.3
1 msec, ½ Sine, mounted
T/H â
SMD â
â
Meets UL 94V-O
48
â
1500
â
â
115 (i)
10
â
20
2.5
500
250
35
Max
75
â
â
â
+85
â
â
235 (ii)
125
â
â
â
â
â
Units
VDC
V
pF
Mâ¦
°C
°C
°C
°C
Gâs
Gâs
grams
Notes: (i) This parameter is defined by design
(ii) During reflow of SMD package version do not elevate peak temperature of the module, pins or internal components above the stated maximum.
For technical support and further information visit http://power.ti.com
|
▷ |