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PT8100 Datasheet Preview

PT8100 Datasheet

40-A 3.3/5-V Input Programmable Integrated Switching Regulator

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PT8100 Series
40-A 3.3/5-V Input Programmable
Integrated Switching Regulator
SLTS157A
(Revised 8/23/2002)
Features
40ADC Output Current
+3.3V or +5V Input
Low Output Voltages:
0.8V—2.7V
High Efficiency
Programmable Output:
(VRM Compatible 5-bit Codes)
Multiphase Topology
Output Remote Sense
Short-Circuit Protection
Thermal Shutdown
Standby On/Off Control
Space-Saving Package
Solderable Copper Case
Description
The PT8100 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. Modules are avail-
able for operation from either a 3.3V
or 5V nominal input bus voltage.
Each provides up to 40A of output
current at output voltages as low
as 0.8V. The output voltage is pro-
grammable via a 5-bit input code.
The PT8100 series 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 modules are designed for high-
end computing and signal processing
applications, both of which demand
high output currents at low supply
voltages.
The modules have a number of
standard features to facilitate system
integration. These include short-
circuit protection, thermal shutdown,
standby (On/Off) control, and an
output remote sense to compensate
for voltage drop between the regu-
lator and the load. In addition, the
voltage programming codes are
compatible with Intel’s® VRM
specifications.
Ordering Information
Part No.
Output Voltage
Progam Range
Input
Bus
PT8101H =1.300 to 2.70V 5V
PT8102H =1.075 to 1.85V 5V
PT8103H =1.075 to 1.85V 3.3V
PT8104H =1.050 to 1.825V 5V
PT8105H =0.800 to 1.575V 3.3V
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)
Standard Application (See p.3 for PT8104 application schematic)
VID0
VID1
VID2
VID3
VID4
VID
Common
VIN
C3 +
100µF
Optional
GND
STBY*
PROGRAMMING PINS
L1
12–16
1µH
C1
1,500µF
Required
+
REMOTE SENSE
11 5 4 3 2 1 31
PT8100 Series
(Except PT8104)
6 17–22
23–30
C2
660µF
Required
+
VOUT
GND
L
O
A
D
C1 = Required 1500µF electrolytic input capacitor
C2 = Required 660µF low ESR OS-Con®, or
1,200µF aluminum electrolytic
Lin/C3 = Optional input filter components. 1µH input
choke and 100µF electroytic capacitor.
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
1




Power Trends

PT8100 Datasheet Preview

PT8100 Datasheet

40-A 3.3/5-V Input Programmable Integrated Switching Regulator

No Preview Available !

PT8100 Series
40-A 3.3/5-V Input Programmable
Integrated Switching Regulator
Pin-Out Information (Except PT8104 –see p.3)
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
VID Common =Output Disabled
Pin Function
22 GND
23 Vout
24 Vout
25 Vout
26 Vout
27 Vout
28 Vout
29 Vout
30 Vout
31 Remote Sense
Voltage Programming Information (Except PT8104 –see p.3)
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
PT8101
(VRM 8.4)
VID 4=1
Vout (iv)
2.00
2.10
2.30
2.40
2.50
2.60
2.70
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
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
PT8102/8103
(VRM 9.1)
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) The output voltage of the PT8101 must not be set higher than 2.7V.
PT8105
(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
2 For technical support and more information, see inside back cover or visit www.ti.com


Part Number PT8100
Description 40-A 3.3/5-V Input Programmable Integrated Switching Regulator
Maker Power Trends
Total Page 14 Pages
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