Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

HIP6311A Datasheet(PDF) 12 Page - Renesas Technology Corp

Part No. HIP6311A
Description  Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HIP6311A Datasheet(HTML) 12 Page - Renesas Technology Corp

Back Button HIP6311A Datasheet HTML 8Page - Renesas Technology Corp HIP6311A Datasheet HTML 9Page - Renesas Technology Corp HIP6311A Datasheet HTML 10Page - Renesas Technology Corp HIP6311A Datasheet HTML 11Page - Renesas Technology Corp HIP6311A Datasheet HTML 12Page - Renesas Technology Corp HIP6311A Datasheet HTML 13Page - Renesas Technology Corp HIP6311A Datasheet HTML 14Page - Renesas Technology Corp HIP6311A Datasheet HTML 15Page - Renesas Technology Corp HIP6311A Datasheet HTML 16Page - Renesas Technology Corp  
Zoom Inzoom in Zoom Outzoom out
 12 / 16 page
background image
HIP6311A
FN9035 Rev 1.00
Page 12 of 16
July 2004
at the leading and trailing edges of the load transient. In order to
fully utilize the output-voltage tolerance range, the output
voltage is positioned in the upper half of the range when the
output is unloaded and in the lower half of the range when the
controller is under full load. This droop compensation allows
larger transient voltage deviations and thus reduces the size and
cost of the output filter components.
RIN should be selected to give the desired “droop” voltage at
the normal full load current 50
A applied through the RISEN
resistor (or at a different full load current if adjusted as under
“Over-Current, Selecting RISEN” above).
RIN = Vdroop/50A
For a Vdroop of 80mV, RIN = 1.6k
The AC feedback components, RFB and Cc, are scaled in
relation to RIN.
Current Balancing
The detected currents are also used to balance the phase
currents.
Each phase’s current is compared to the average of all phase
currents, and the difference is used to create an offset in that
phase’s PWM comparator. The offset is in a direction to reduce
the imbalance.
The balancing circuit can not make up for a difference in
rDS(ON) between synchronous rectifiers. If a FET has a higher
rDS(ON), the current through that phase will be reduced.
Figures 8 and 9 show the inductor current of a two phase
system without and with current balancing.
Inductor Current
The inductor current in each phase of a multi-phase Buck
converter has two components. There is a current equal to the
load current divided by the number of phases (ILT / n), and a
sawtooth current, (iPK-PK) due to switching. The sawtooth
component is dependent on the size of the inductors, the
switching frequency of each phase, and the values of the input
and output voltage. Ignoring secondary effects, such as series
resistance, the peak to peak value of the sawtooth current can
be described by:
iPK-PK = (VIN x VCORE - VCORE2) / (L x FSW x VIN)
Where: VCORE = DC value of the output or VID voltage
VIN = DC value of the input or supply voltage
L = value of the inductor
FSW = switching frequency
Example: For VCORE =1.6V,
VIN =12V,
L= 1.3
H,
FSW = 250kHz,
Then iPK-PK = 4.3A
The inductor, or load current, flows alternately from VIN
through Q1 and from ground through Q2. The HIP6311A
samples the on-state voltage drop across each Q2 transistor to
indicate the inductor current in that phase. The voltage drop is
sampled 1/3 of a switching period, 1/FSW, after Q1 is turned
OFF and Q2 is turned on. Because of the sawtooth current
component, the sampled current is different from the average
current per phase. Neglecting secondary effects, the sampled
current (ISAMPLE) can be related to the load current (ILT) by:
ISAMPLE = ILT / n + (VINVCORE - 3VCORE2) / (6L x FSW x VIN)
Where: ILT = total load current
n = the number of channels
Example: Using the previously given conditions, and
For ILT = 100A,
n= 4
Then ISAMPLE = 25.49A
0
5
10
15
20
25
FIGURE 8. TWO CHANNEL MULTIPHASE SYSTEM WITH
CURRENT BALANCING DISABLED
0
5
10
15
20
25
FIGURE 9. TWO CHANNEL MULTIPHASE SYSTEM WITH
CURRENT BALANCING ENABLED


Similar Part No. - HIP6311A

ManufacturerPart No.DatasheetDescription
Intersil Corporation
Intersil Corporation
HIP6311A INTERSIL-HIP6311A Datasheet
449Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6311ACB INTERSIL-HIP6311ACB Datasheet
449Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6311ACB-T INTERSIL-HIP6311ACB-T Datasheet
449Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6311ACBZ INTERSIL-HIP6311ACBZ Datasheet
449Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6311ACBZ-T INTERSIL-HIP6311ACBZ-T Datasheet
449Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
More results

Similar Description - HIP6311A

ManufacturerPart No.DatasheetDescription
Intersil Corporation
Intersil Corporation
ISL6553 INTERSIL-ISL6553_04 Datasheet
672Kb / 15P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Renesas Technology Corp
Renesas Technology Corp
ISL6552 RENESAS-ISL6552 Datasheet
863Kb / 18P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Intersil Corporation
Intersil Corporation
HIP6302 INTERSIL-HIP6302_04 Datasheet
441Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6311 INTERSIL-HIP6311_04 Datasheet
442Kb / 17P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6302CBZA-T INTERSIL-HIP6302CBZA-T Datasheet
459Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6304 INTERSIL-HIP6304 Datasheet
176Kb / 14P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Renesas Technology Corp
Renesas Technology Corp
HIP6311 RENESAS-HIP6311 Datasheet
802Kb / 17P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Intersil Corporation
Intersil Corporation
HIP6301 INTERSIL-HIP6301 Datasheet
191Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
ISL6553 INTERSIL-ISL6553 Datasheet
182Kb / 15P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Renesas Technology Corp
Renesas Technology Corp
HIP6301 RENESAS-HIP6301 Datasheet
804Kb / 17P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
More results


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16 


Datasheet Download

Go To PDF Page


Link URL




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

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   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