Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

ADP3153 Datasheet(PDF) 11 Page - Analog Devices

Part # ADP3153
Description  5-Bit Programmable Dual Power Supply Controller for Pentium II Processor
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP3153 Datasheet(HTML) 11 Page - Analog Devices

Back Button ADP3153 Datasheet HTML 4Page - Analog Devices ADP3153 Datasheet HTML 5Page - Analog Devices ADP3153 Datasheet HTML 6Page - Analog Devices ADP3153 Datasheet HTML 7Page - Analog Devices ADP3153 Datasheet HTML 8Page - Analog Devices ADP3153 Datasheet HTML 9Page - Analog Devices ADP3153 Datasheet HTML 10Page - Analog Devices ADP3153 Datasheet HTML 11Page - Analog Devices ADP3153 Datasheet HTML 12Page - Analog Devices  
Zoom Inzoom in Zoom Outzoom out
 11 / 12 page
background image
ADP3153
–11–
REV. 0
BOARD LAYOUT
A multilayer PCB is recommended with a minimum of two
copper layers. One layer on top should be used for traces inter-
connecting low power SMT components. The ground terminals
of those components should be connected with vias to the bot-
tom traces connecting directly to the ADP3153 ground pins.
One layer should be a power ground plane. If four layers are
possible, one additional layer should be an internal system
ground plane, and one additional layer can be used for other
system interconnections.
When laying out the printed circuit board, the following check-
list should be used to ensure proper operation of the ADP3153.
Board Layout Guidelines
1. The power loop should be routed on the PCB to encompass
small areas to minimize radiated switching noise energy to
the control circuit and thus to avoid circuit problems caused
by noise. This technique also helps to reduce radiated EMI.
The power loop includes the input capacitors, the two
MOSFETs, the sense resistor, the inductor and the output
capacitors. The ground terminals of the input capacitors,
the low side FET, the ADP3153 and the output capacitors
should be connected together with short and wide traces. It is
best to use an internal ground plane.
2. The PGND (power ground) pin of the ADP3153 must re-
turn to the grounded terminals of the input and output ca-
pacitors and to the source of the low side MOSFET with the
shortest and widest traces possible. The AGND (analog
ground) pin has to be connected to the ground terminals of
the timing capacitor and the compensating capacitor, again
with the shortest leads possible, and before it is connected to
the PGND pin.
3. The positive terminal of the input capacitors must be con-
nected to the drain of the high side MOSFET. The source
terminal of this FET is connected to the drain of the low side
FET, (whose source is connected to the ground plane direct)
with the widest and shortest traces possible. To kill parasitic
ringing at the input of the buck inductor due to parasitic
capacitances and inductances, a small (L > 3 mm) ferrite
bead is recommended to be placed in the drain lead of the
low side FET. Also, to minimize dissipation of the high side
FET, a low voltage 1 A Schottky diode can be connected
between the input of the buck inductor and the source of the
low side FET.
4. The positive terminal of the bypass capacitors of the +12 V
supply must be connected to the VIN pin of the ADP3153
with the shortest leads possible. The negative terminals must
be connected to the PGND pin of the ADP3153.
5. The sense pins of the ADP3153 must be connected to the
sense resistor with as short traces as possible. Make sure that
the two sense traces are routed together with minimum sepa-
ration (<1 mm). The output side of the sense resistor should
be connected to the VCC pin(s) of the CPU with as short and
wide PCB traces as possible to reduce the VCC voltage drop.
(Each square unit of 1 ounce Cu-trace has a resistance of
~0.53 m
Ω. At 14 A, each mΩ of PCB trace resistance be-
tween current sense resistor output and VCC terminal(s) of
the CPU will reduce the regulated output voltage by 14 mV.
The filter capacitors to ground at the sense terminals of the
IC should be as close as possible (<8 mm) to the ADP3153.
The common ground of the optional filter capacitors should
be connected to the AGND pin of the ADP3153 with the
shortest traces possible (<10 mm).
6. The microprocessor load should be connected to the output
terminals of the converter with the widest and shortest traces
possible. Use overlapping traces in different layers to mini-
mize interconnection inductance.


Similar Part No. - ADP3153

ManufacturerPart #DatasheetDescription
logo
Analog Devices
ADP3153 AD-ADP3153_15 Datasheet
167Kb / 12P
   5-Bit Programmable Dual Power Supply Controller
REV. 0
More results

Similar Description - ADP3153

ManufacturerPart #DatasheetDescription
logo
STMicroelectronics
L6911B STMICROELECTRONICS-L6911B Datasheet
50Kb / 7P
   5 BIT PROGRAMMABLE POWER SUPPLY CONTROLLER FOR PENTIUM II PROCESSOR
logo
Linear Technology
LTC1553 LINER-LTC1553 Datasheet
399Kb / 24P
   5-Bit Programmable Synchronous Switching Regulator Controller for Pentium II Processor
logo
Analog Devices
ADP3152 AD-ADP3152 Datasheet
274Kb / 12P
   5-Bit Programmable Synchronous Switching Regulator Controller for Pentium II Processor
REV. 0
logo
Linear Technology
LTC1553L LINER-LTC1553L Datasheet
370Kb / 20P
   5-Bit Programmable Synchronous Switching Regulator Controller for Pentium II Processor
logo
Analog Devices
ADP3154 AD-ADP3154 Datasheet
187Kb / 12P
   5-Bit Programmable Dual Power Supply Controller for Pentium III Processors
REV. A
ADP3155 AD-ADP3155_15 Datasheet
207Kb / 14P
   5-Bit Programmable Triple Power Supply Controller for Pentium
REV. A
ADP3155 AD-ADP3155 Datasheet
200Kb / 14P
   5-Bit Programmable Triple Power Supply Controller for Pentium III Processors
logo
Linear Technology
LTC1753 LINER-LTC1753_15 Datasheet
257Kb / 24P
   5-Bit Programmable Synchronous Switching Regulator Controller for Pentium III Processor
logo
Analog Devices
ADP3153 AD-ADP3153_15 Datasheet
167Kb / 12P
   5-Bit Programmable Dual Power Supply Controller
REV. 0
logo
Linear Technology
LTC1753 LINER-LTC1753 Datasheet
269Kb / 24P
   5-Bit Programmable Synchronous Switching Regulator Controller for Pentium III Processor
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com