Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

ISL6560 Datasheet(PDF) 11 Page - Intersil Corporation

Part # ISL6560
Description  Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
Download  14 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL6560 Datasheet(HTML) 11 Page - Intersil Corporation

Back Button ISL6560 Datasheet HTML 6Page - Intersil Corporation ISL6560 Datasheet HTML 7Page - Intersil Corporation ISL6560 Datasheet HTML 8Page - Intersil Corporation ISL6560 Datasheet HTML 9Page - Intersil Corporation ISL6560 Datasheet HTML 10Page - Intersil Corporation ISL6560 Datasheet HTML 11Page - Intersil Corporation ISL6560 Datasheet HTML 12Page - Intersil Corporation ISL6560 Datasheet HTML 13Page - Intersil Corporation ISL6560 Datasheet HTML 14Page - Intersil Corporation  
Zoom Inzoom in Zoom Outzoom out
 11 / 14 page
background image
11
FN9011.3
ISL6560
MOSFET Selection and Considerations
In high-current PWM applications, the MOSFET power
dissipation, package selection and heatsink are the
dominant design factors. The power dissipation includes two
loss components; conduction loss and switching loss. These
losses are distributed between the upper and lower
MOSFETs according to duty factor (see the following
equations). The conduction losses are the main component
of power dissipation for the lower MOSFETs, Q2 and Q4 of
Figure 10. Only the upper MOSFETs, Q1 and Q3 have
significant switching losses, since the lower device turns on
and off into near-zero voltage.
The equations assume linear voltage-current transitions and
do not model power loss due to the reverse-recovery of the
lower MOSFET’s body diode. The gate-charge losses are
dissipated by the driver IC and don't heat the MOSFETs.
However, large gate-charge increases the switching time,
tSW which increases the upper MOSFET switching losses.
Ensure that both MOSFETs are within their maximum
junction temperature at high ambient temperature by
calculating the temperature rise according to package
thermal-resistance specifications. A separate heat sink may
be necessary depending upon MOSFET power, package
type, ambient temperature and air flow.
Figure 10 shows a schematic of the circuit developed from
the proceeding computations. This circuit is implemented on
the ISL6560/62 Evaluation Board. The next section will
discuss PC board layout.
PC Board Layout Considerations
Like all high-current supplies where low-voltage control
signals in the millivolt range must live with high voltage and
high-current switching signals, PC board layout becomes
crucial in obtaining a satisfactory supply.
Figure 11 shows a simplified diagram of the critical areas of
a PC board layout. This diagram and the following material
represent goals to work towards during the layout phase.
Goals will be compromised during the layout process due to
component placement and space constraints. The following
text reviews these layout considerations in more detail.
Current Sampling
1. Place the current sampling or sense resistor as close as
possible to the upper MOSFET drains. This is important
since the added inductance and resistance increase the
impedance and result in a reduction in drain voltage
during high peak pulse currents.
P
UPPER
I
O
2
r
DS ON
()
×
V
OUT
×
V
IN
------------------------------------------------------------
I
O
V
IN
×
t
SW
×
F
S
×
2
----------------------------------------------------
+
=
P
LOWER
I
O
2
r
DS ON
()
×
V
IN
V
OUT
()
×
V
IN
---------------------------------------------------------------------------------
=
5m
HIP6601ECB
+VCORE
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
PWRGD
REF
PWM1
PWM2
VCC
CS-
CS+
GND
VID4
VID3
VID2
VID1
VID0
CT
FB
COMP
1
2
3
4
8
7
6
5
PHASE
PVCC
VCC
LGATE
UGATE
BOOT
PWM
GND
1
2
3
4
8
7
6
5
PHASE
PVCC
VCC
LGATE
UGATE
BOOT
PWM
GND
{
INPUT
VID CODES
from
PROCSSOR
+VIN
12V
HIP6601ECB
ISL6560
{
22k
15k
1k
10
20
330
4.3k
6 - 470
µF
2 - 4.7
µF
1nF
150pF
4.7
µF
330pF
15nF
0.1
µF
1
µF
100pF
0.1
µF
1
µF
1nF
6 - 1200
µF
16 - 22
µF
900nH
900nH
C41-42
C15, C17-18, C29, C50-51
R13
R14
R6
C10
C11
R11
R12
R5
C13
C14
R7
C1
C2
C3
C4
L1
L2
C19, C30,
C34-37,
C39, C45-49,
C60-63
C21, C24-28
L3
1
µH
C20
C40
R27
C12
Q2 HUF76145
Q3
Q4
Q1 HUF76139
HUF76139
HUF76145
FIGURE 10. SCHEMATIC DIAGRAM OF A 40A SUPPLY USING THE ISL6560 CONTROLLER AND HIP6601 GATE DRIVERS


Similar Part No. - ISL6560

ManufacturerPart #DatasheetDescription
logo
Renesas Technology Corp
ISL6560 RENESAS-ISL6560 Datasheet
792Kb / 13P
   Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
October 22, 2004
ISL6560/62EVAL1 RENESAS-ISL6560/62EVAL1 Datasheet
792Kb / 13P
   Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
October 22, 2004
ISL6560/62EVAL1 RENESAS-ISL6560/62EVAL1 Datasheet
427Kb / 6P
   Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
Mar 23, 2001
logo
Intersil Corporation
ISL656062EVAL1 INTERSIL-ISL656062EVAL1 Datasheet
45Kb / 5P
   Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
logo
Renesas Technology Corp
ISL6560CB RENESAS-ISL6560CB Datasheet
792Kb / 13P
   Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
October 22, 2004
More results

Similar Description - ISL6560

ManufacturerPart #DatasheetDescription
logo
Intersil Corporation
ISL6562 INTERSIL-ISL6562 Datasheet
45Kb / 5P
   Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
logo
Renesas Technology Corp
ISL6560 RENESAS-ISL6560 Datasheet
792Kb / 13P
   Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
October 22, 2004
ISL6562 RENESAS-ISL6562 Datasheet
427Kb / 6P
   Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
Mar 23, 2001
logo
Intersil Corporation
ISL6553 INTERSIL-ISL6553_04 Datasheet
672Kb / 15P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
logo
Renesas Technology Corp
HIP6311A RENESAS-HIP6311A Datasheet
778Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
ISL6552 RENESAS-ISL6552 Datasheet
863Kb / 18P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6304 RENESAS-HIP6304 Datasheet
756Kb / 14P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
March 2000
logo
Intersil Corporation
HIP6304 INTERSIL-HIP6304 Datasheet
176Kb / 14P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6302 INTERSIL-HIP6302_04 Datasheet
441Kb / 16P
   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
More results


Html Pages

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


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