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PT8122 Datasheet Preview

PT8122 Datasheet

30-A 12-V Input Programmable Integrated Switching Regulator

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PT8120 Series
30-A 12-V Input Programmable
Integrated Switching Regulator
SLTS158B
(Revised 6/6/2002)
Features
Single Device: 30ADC
+12V-Input
High Efficiency: 92% @3.3V
Programmable Output:
(VRM Compatible 5-bit Codes)
Multiphase Topology
Output Remote Sense
Over-Current Protection
Thermal Shutdown
Standby On/Off Control
Space-Saving Package
Solderable Copper Case
Description
The PT8120 Excalibur™ power
modules are a family of high-output,
high-efficiency, fully integrated
switching regulators (ISRs), housed
in a solderable 31-pin space-saving
copper package. These modules
operate from a nominal input voltage
of +12V to provide up to 30A of
output current at output voltages as
low as 0.8V. The output voltage is
programmable via a 5-bit input code.
The PT8120 family incorporates
a state-of-the-art, 2-phase, multiple
power path topology. This extends
the output current range while pro-
viding superior transient response
and input current ripple performance.
The PT8120 family is designed
to power high-end computing and
signal processing applications, all of
which demand high output currents
at low supply voltages.
The modules have a number of
features to facilitate system integra-
tion. These include over-current
protection, thermal shutdown, an
on/off standby control, and an output
remote sense to compensate for
voltage drop between the regulator
and the load. In addition, the volt-
age programming codes for the
PT8121, PT8122, & PT8124 are
compatible with Intel’s® VRM
specifications.
Ordering Information
PT8121H
PT8122H
PT8123H
PT8124H
PT8125H
= 1.3V to 3.5V
= 1.075V to 1.85V
= 0.8V to 1.575V
= 1.05V to 1.825V
= 4.5V to 7.6V
PT Series Suffix (PT1234 x )
Case/Pin
Configuration
Order
Suffix
Package
Code
Vertical
Horizontal
SMD
N (EKH)
A (EKF)
C (EKG)
(Reference the applicable package code drawing for
the dimensions and PC board layout)
PT812x Standard Application (See page 4 for PT8124 application schematic)
VID0
VID1
VID2
VID3
VID4
VID
Common
PROGRAMMING PINS
REMOTE SENSE
11 5 4 3 2 1 31
VIN
GND
Lin
1µH
12–16
+
CIN
PT8120 Series
(Except PT8124)
6 17–22
23–30
+
COUT
VOUT
GND
L
O
A
D
STBY*
Cin = Required 1500µF electrolytic
Cout = Required 660µF low ESR OS-Con®, or
1,200µF aluminum electrolytic
Lin = Optional 1µH input choke
For technical support and more information, see inside back cover or visit www.ti.com




Power Trends

PT8122 Datasheet Preview

PT8122 Datasheet

30-A 12-V Input Programmable Integrated Switching Regulator

No Preview Available !

PT8120 Series
30-A 12-V Input Programmable
Integrated Switching Regulator
Pin-Out Information (Except PT8124 )
Pin Function
1 VID 0
2 VID 1
3 VID 2
4 VID 3
5 VID 4
6 STBY *
7 Do Not Connect
8 Do Not Connect
9 Do Not Connect
10 Do Not Connect
11 VID Common
Pin Function
12 Vin
13 Vin
14 Vin
15 Vin
16 Vin
17 GND
18 GND
19 GND
20 GND
21 GND
* For STBY pin:
Open =Output Enabled
Ground =Output Disabled
† See page 4 for PT8124 pin-out
Pin Function
22 GND
23 Vout
24 Vout
25 Vout
26 Vout
27 Vout
28 Vout
29 Vout
30 Vout
31 Remote Sense
Output Voltage Programming Information (Except PT8124)
VID 3
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
VID 2 VID 1 VID 0
111
110
101
100
011
010
001
000
111
110
101
100
011
010
001
000
PT8121
(VRM 8.3/8.4)
VID 4=1
Vout
2.00V
2.10V
2.20V
2.30V
2.40V
2.50V
2.60V
2.70V
2.80V
2.90V
3.00V
3.10V
3.20V
3.30V
3.40V
3.50V
VID 4=0
Vout
1.30V
1.35V
1.40V
1.45V
1.50V
1.55V
1.60V
1.65V
1.70V
1.75V
1.80V
1.85V
1.90V
1.95V
2.00V
2.05V
PT8122
(VRM 9.0)
VID 4=1
Vout
1.075V
1.100V
1.125V
1.150V
1.175V
1.200V
1.225V
1.250V
1.275V
1.300V
1.325V
1.350V
1.375V
1.400V
1.425V
1.450V
VID 4=0
Vout
1.475V
1.500V
1.525V
1.550V
1.575V
1.600V
1.625V
1.650V
1.675V
1.700V
1.725V
1.750V
1.775V
1.800V
1.825V
1.850V
Notes:
i) Logic 0 = Connect to VID Common
ii) Logic 1 = Open circuit (no pull-up resistors)
iii) VID3 and VID4 may not be changed while the unit is operating.
iv) See page 4 for PT8124 (VRM 8.5) programming information.
PT8123
(Custom Code)
VID 4=1
Vout
0.800V
0.825V
0.850V
0.875V
0.900V
0.925V
0.950V
0.975V
1.000V
1.025V
1.050V
1.075V
1.100V
1.125V
1.150V
1.175V
VID 4=0
Vout
1.200V
1.225V
1.250V
1.275V
1.300V
1.325V
1.350V
1.375V
1.400V
1.425V
1.450V
1.475V
1.500V
1.525V
1.550V
1.575V
PT8125
(Custom Code)
VID 4=1
Vout
4.5V
4.6V
4.7V
4.8V
4.9V
5.0V
5.1V
5.2V
5.3V
5.4V
5.5V
5.6V
5.7V
5.8V
5.9V
6.0V
VID 4=0
Vout
6.1V
6.2V
6.3V
6.4V
6.5V
6.6V
6.7V
6.8V
6.9V
7.0V
7.1V
7.2V
7.3V
7.4V
7.5V
7.6V
For technical support and more information, see inside back cover or visit www.ti.com


Part Number PT8122
Description 30-A 12-V Input Programmable Integrated Switching Regulator
Maker Power Trends
Total Page 10 Pages
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