Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

ISL6565BCBZ Datasheet(PDF) 9 Page - Intersil Corporation

Part # ISL6565BCBZ
Description  Multi-Phase PWM Controller with Precision rDS(ON) or DCR Current Sensing for VR10.X Application
Download  28 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL6565BCBZ Datasheet(HTML) 9 Page - Intersil Corporation

Back Button ISL6565BCBZ Datasheet HTML 5Page - Intersil Corporation ISL6565BCBZ Datasheet HTML 6Page - Intersil Corporation ISL6565BCBZ Datasheet HTML 7Page - Intersil Corporation ISL6565BCBZ Datasheet HTML 8Page - Intersil Corporation ISL6565BCBZ Datasheet HTML 9Page - Intersil Corporation ISL6565BCBZ Datasheet HTML 10Page - Intersil Corporation ISL6565BCBZ Datasheet HTML 11Page - Intersil Corporation ISL6565BCBZ Datasheet HTML 12Page - Intersil Corporation ISL6565BCBZ Datasheet HTML 13Page - Intersil Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 28 page
background image
9
Functional Pin Description
VCC - Supplies all the power necessary to operate the chip.
The controller starts to operate when the voltage on this pin
exceeds the rising POR threshold and shuts down when the
voltage on this pin drops below the falling POR threshold.
Connect this pin directly to a +5V supply or through a series
300
Ω resistor to a +12V supply.
GND - Bias and reference ground for the IC.
EN - This pin is a threshold-sensitive enable input for the
controller. Connecting the 12V supply to EN through an
appropriate resistor divider provides a means to synchronize
power-up of the controller and the MOSFET driver ICs.
When EN is driven above 1.31V, the ISL6565A, ISL6565B is
active depending on status of ENLL, the internal POR, and
pending fault states. Driving EN below 1.14V will clear all
fault states and prime the ISL6565A, ISL6565B to soft-start
when re-enabled.
ENLL - This pin is a logic-level enable input for the
controller. When asserted to a logic high, the ISL6565 is
active depending on status of EN, the internal POR, VID
inputs and pending fault states. Deasserting ENLL will clear
all fault states and prime the ISL6565A, ISL6565B to soft-
start when re-enabled.
FS - A resistor, placed from FS to ground, will set the
switching frequency. Refer to Equation 45 for proper resistor
calculation.
VID4, VID3, VID2, VID1, VID0, and VID12.5 - These are the
inputs to the internal DAC that provides the reference
voltage for output regulation. Connect these pins either to
open-drain outputs with or without external pull-up resistors
or to active-pull-up outputs. VID4-VID12.5 have 20
µA
internal pull-up current sources that diminish to zero as the
voltage rises above the logic-high level.
VDIFF, VSEN, and RGND - VSEN and RGND are inputs to
the precision differential remote-sense amplifier. This
amplifier converts the differential voltage of the remote
output to a single-ended voltage referenced to local ground.
VDIFF is the amplifier’s output and the input to the regulation
and protection circuitry. Connect VSEN and RGND to the
sense pins of the remote load.
FB and COMP - Inverting input and output of the error
amplifier respectively. FB is connected to VDIFF through a
resistor. A negative current, proportional to output current is
present on the FB pin. A properly sized resistor between
VDIFF and FB sets the load line (droop). The droop scale
factor is set by the ratio of the ISEN resistors and the lower
MOSFET rDS(ON) or inductor DCR. COMP is tied back to FB
through an external R-C network to compensate the
regulator.
REF - The REF input pin is the positive input of the Error
Amp. It is internally connected to the DAC output through a
1k
Ω resistor. A capacitor is used between the REF pin and
ground to smooth the voltage transition during Dynamic
VID™ operations.
TCOMP - Temperature compensation scaling input. A
resistor from this pin to ground sets the gain of the internal
thermal sense circuitry. The temperature sensed by the
controller is utilized to modify the droop current output to the
FB pin, adjusting for MOSFET rDS(ON) and Inductor DCR
variations with temperature.
PWM1, PWM2, PWM3 - Pulse-width modulation outputs.
Connect these pins to the PWM input pins of the Intersil
driver ICs. The number of active channels is determined by
the state of PWM3. Tie PWM3 to VCC to configure for
2-phase operation.
ISEN1, ISEN2, ISEN3, ICOMMON (ISL6565B only) -
These pins are used for sensing individual phase output
currents. The sensed current is used for channel balancing,
protection, and load line regulation. ISEN3 should be left
open for 2-phase operation.
For rDS(ON) current sensing using the ISL6565A, connect a
resistor between the ISEN1, ISEN2, and ISEN3 pins and
their respective phase node. This resistor sets a current
proportional to the current in the lower MOSFET during it’s
conduction interval.
For DCR sensing using the ISL6565B, connect a resistor
from VCORE to the ICOMMON pin. Then connect ISEN1,
ISEN2, and ISEN3 to the node between the RC sense
elements surrounding the inductor of their respective phase.
PGOOD - PGOOD is used as an indication of the end of
soft-start. It is an open-drain logic output that is low
impedance until the soft-start is completed. It will be pulled
low again once the undervoltage point is reached.
OFS - The OFS pin provides a means to program a dc
current for generating an offset voltage across the droop
resistor between FB and VDIFF. The offset current is
generated via an external resistor and precision internal
voltage references. The polarity of the offset is selected by
connecting the resistor to GND or VCC. For no offset, the
OFS pin should be left unconnected.
OVP - Overvoltage protection pin. This is an open drain
device, which can be externally configured with a resistor to
control an SCR to shut down the regulator.
ISL6565A, ISL6565B


Similar Part No. - ISL6565BCBZ

ManufacturerPart #DatasheetDescription
logo
Renesas Technology Corp
ISL6565BCBZ RENESAS-ISL6565BCBZ Datasheet
1Mb / 28P
   Multi-Phase PWM Controller with Precision rDS(ON) or DCR Current Sensing for VR10.X Application
More results

Similar Description - ISL6565BCBZ

ManufacturerPart #DatasheetDescription
logo
Renesas Technology Corp
ISL6565A RENESAS-ISL6565A Datasheet
1Mb / 28P
   Multi-Phase PWM Controller with Precision rDS(ON) or DCR Current Sensing for VR10.X Application
logo
Intersil Corporation
ISL6561 INTERSIL-ISL6561 Datasheet
782Kb / 26P
   Multi-Phase PWM Controller with Precision Rds(on) or DCR Differential Current Sensing for VR10.X Application
logo
Renesas Technology Corp
ISL6561 RENESAS-ISL6561 Datasheet
1Mb / 27P
   Multi-Phase PWM Controller with Precision rDS(ON) or DCR Differential Current Sensing for VR10.X Application
logo
Intersil Corporation
ISL6316 INTERSIL-ISL6316_06 Datasheet
697Kb / 29P
   Enhanced 4-Phase PWM Controller with 6-Bit VID Code Capable of Precision rDS(ON) or DCR Differential Current Sensing for VR10 Application
logo
Renesas Technology Corp
ISL6316 RENESAS-ISL6316 Datasheet
1Mb / 30P
   Enhanced 4-Phase PWM Controller with 6-Bit VID Code Capable of Precision rDS(ON) or DCR Differential Current Sensing for VR10 Application
logo
Intersil Corporation
ISL6316 INTERSIL-ISL6316 Datasheet
838Kb / 29P
   Enhanced 4-Phase PWM Controller with 6-Bit VID Code Capable of Precision RDS(ON) or DCR Differential Current Sensing for VR10 Application
logo
Renesas Technology Corp
ISL6564 RENESAS-ISL6564 Datasheet
1Mb / 28P
   Multi-Phase PWM Controller with Linear 6-bit DAC Capable of Precision rDS(ON) or DCR Differential Current Sensing
logo
Intersil Corporation
ISL6564 INTERSIL-ISL6564 Datasheet
798Kb / 27P
   Multi-Phase PWM Controller with Linear 6-bit DAC Capable of Precision rDS(ON) or DCR Differential Current Sensing
ISL6326 INTERSIL-ISL6326 Datasheet
630Kb / 30P
   4-Phase PWM Controller with 8-Bit DAC Code Capable of Precision rDS ON or DCR Differential Current Sensing
logo
Renesas Technology Corp
ISL6306 RENESAS-ISL6306 Datasheet
1Mb / 33P
   4-Phase PWM Controller with 8-Bit DAC Code Capable of Precision rDS(ON) or DCR Differential Current Sensing
More results


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


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
Family Site : ic2ic.com  |   icmetro.com