Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

ADP3189 Datasheet(PDF) 32 Page - Analog Devices

Part # ADP3189
Description  8-Bit Programmable 2- to 5-Phase Synchronous Buck Controller
PDF  36 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP3189 Datasheet(HTML) 32 Page - Analog Devices

Back Button ADP3189 Datasheet HTML 28Page - Analog Devices ADP3189 Datasheet HTML 29Page - Analog Devices ADP3189 Datasheet HTML 30Page - Analog Devices ADP3189 Datasheet HTML 31Page - Analog Devices ADP3189 Datasheet HTML 32Page - Analog Devices ADP3189 Datasheet HTML 33Page - Analog Devices ADP3189 Datasheet HTML 34Page - Analog Devices ADP3189 Datasheet HTML 35Page - Analog Devices ADP3189 Datasheet HTML 36Page - Analog Devices  
Zoom Inzoom in Zoom Outzoom out
 32 / 36 page
background image
ADP3189
Rev. 0 | Page 32 of 36
TUNING THE ADP3189
1.
Build a circuit based on the compensation values
computed from the design spreadsheet.
2.
Hook up the dc load to circuit, turn it on, and verify its
operation. Also, check for jitter at no load and full load.
DC Loadline Setting
3.
Measure the output voltage at no load (VNL). Verify that it
is within tolerance.
4.
Measure the output voltage at full load cold (VFLCOLD). Let
the board sit for ~10 minutes at full load, and then measure
the output (VFLHOT). If there is a change of more than a few
millivolts, adjust RCS1 and RCS2 using Equation 41 and
Equation 43.
()
()
FLHOT
NL
FLCOLD
NL
OLD
CS2
NEW
CS2
V
V
V
V
R
R
−
−
×
=
(41)
5.
Repeat Step 4 until the cold and hot voltage measurements
remain the same.
6.
Measure the output voltage from no load to full load using
5 A steps. Compute the loadline slope for each change, and
then average to get overall loadline slope (ROMEAS).
7.
If ROMEAS is off from RO by more than 0.05 mΩ, use the
following to adjust the RPH values:
()
()
O
OMEAS
OLD
PH
NEW
PH
R
R
R
R
×
=
(42)
8.
Repeat Step 6 and Step 7 to check the loadline, and repeat
adjustments if necessary.
9.
Once dc loadline adjustment is complete, do not change
RPH, RCS1, RCS2, or RTH for the remainder of the procedure.
10. Measure the output ripple at no load and full load with
a scope, and make sure it is within specifications.
()
()
(
)
()
(
)
()
()
()
()
(
)
()
()
C
25
C
25
C
25
C
25
1
1
°
°
°
°
−
−
×
−
+
×
+
=
TH
TH
OLD
CS1
NEW
CS2
OLD
CS1
TH
OLD
CS1
TH
OLD
CS1
NEW
CS1
R
R
R
R
R
R
R
R
R
R
(43)



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   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