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參數(shù)資料
| 型號(hào)： | PT6948N |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | XPHASE Phase IC with Opti-Phase OVP with overtemp detect. The IR3087 Phase IC combined with an IR XPhase TM Control IC provides a full featured and flexible way to implement power solutions for the latest high performance CPUs and ASICs.; Similar to IR3087M with Lead Free Packaging on Tape and Reel |
| 中文描述： | 開關(guān)電源控制器 |
| 文件頁(yè)數(shù)： | 2/9頁(yè) |
| 文件大?。?/td> | 190K |
| 代理商： | PT6948N |
For technical support and more information, see inside back cover or visit www.ti.com
PT6940 Series
6-A Dual Output 5-V/3.3-V Input
Integrated Switching Regulator
General Specifications
(Unless otherwise stated, T
a
=25°C, V
in
=5V, C
in
=330μF, Co
1
=330μF, Co
2
=330μF, and Io
1
/Io
2
=Iomax)
PT6940 Series
Typ
Characteristic
Symbol
Conditions
Min
Max
Units
Output Current
I
o
(1)
T
a
=25°C, natural convection
T
a
=60°C, 200LFM airflow
Over I
o
Range
0.1
(2)
0.1
(2)
3.1
4.5
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
300
—
—
—
—
±0.5
±0.5
±5
±5
±43
±35
±28
±25
±22
92
91
90
90
89
88
87
35
60
±70
13
(3)
350
6
6
5.5
5.5
±2
—
±10
±10
±100
±75
±54
±45
±36
—
—
—
—
—
—
—
—
—
—
—
400
A
Input Voltage Range
V
in
Vo
1
≤
2.5V
Vo
1
>2.5V
V
Set Point Voltage Tolerance
Temperature Variation
Line Regulation
Load Regulation
Total Output Voltage Variation
V
o
tol
Reg
temp
Reg
line
Reg
load
V
o
tot
%V
o
%V
o
mV
mV
–40°
≤
T
a
≤
+85°C, I
o
=I
o
min
Over V
in
range
Over I
o
range
Includes set-point, line, load,
–40°
≤
T
a
≤
+85°C
V
o
=3.3V
V
o
=2.5V
V
o
=1.8V
V
o
=1.5V
V
o
=1.2V
PT6941
PT6942
PT6943
PT6944
PT6946
PT6947
PT6948
mV
Efficiency
η
V
in
=5V, Io
1
= Io
2
=4A
%
V
o
Ripple (pk-pk)
Transient Response
V
r
t
tr
V
tr
I
sc
(pk)
o
20MHz bandwidth
1A/μs load step, 50% to 100% I
o
max
V
o
over/undershoot
Reset followed by auto-recovery
Over V
in
range
Referenced to GND (pin 7)
mV
pp
μs
mV
A
kHz
Short Circuit Threshold
Switching Frequency
STBY* (Pin 1)
Input High Voltage
Input Low Voltage
Input Low Current
Quiescent Current
External Output Capacitance
Operating Temperature Range
V
IH
V
IL
I
IL
I
in
standby
—
–0.1
—
—
330
–40
(5)
—
—
-0.5
10
—
—
Open
(4)
+0.4
–
20
TBD
+85
(6)
V
mA
mA
μF
°C
pin 1 to GND
Both outputs
Over V
in
Range
T
a
Storage Temperature
Mechanical Shock
T
s
—
Per Mil-STD-883D, Method 2002.3
1 msec, Sine, mounted
Mil-STD-883D Method 2007.2,
20-2000 Hz
Vertical/Horizontal
Meets UL 94V-O
–40
—
+125
°C
—
—
—
—
TBD
TBD
(7)
TBD
(7)
34
—
—
—
—
G’s
Mechanical Vibration
Vertical
Horizontal
G’s
Weight
Flammability
Notes:
(1) The outputs, Vo
and Vo
, have similar characteristics. The applicable performance parameters are defined according to output voltage.
(2) The minimum output current applies to each output. The module will operate at no load with reduced specifications.
(3) A short-circuit load fault at either output causes the module to continuously reset, affecting both outputs.
(4) The STBY* control (pin 1) has an internal pull-up, and if it is left open circuit the module will operate when input power is applied. The open-circuit voltage
is approximately the input voltage, V
. Refer to the application notes for interface considerations.
(5) For operating temperatures below 0°C, Cin, Co
, and Co
must have stable characteristics. Use either tantalum or Oscon capacitors.
(6) See Safe Operating Area curves for the specific output voltage combination, or contact the factory for the appropriate derating.
(7) Only the case pins on through-hole pin configurations (N & A) must be soldered. For more information see the applicable package outline drawing.
Input/Output C apacitors:
The PT6940 series requires a 330μF electrolytic capacitor at the input and both outputs for proper operation (300μF for Oscon or low ESR
tantalum). In addition, the input capacitance must be rated for a minimum of 1.0Arms ripple current. For transient or dynamic load applications, additional capacitance
may be required. Refer to the application notes for more information.
—
—
grams
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