Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

ISL6210CRZ-T Datasheet(PDF) 7 Page - Intersil Corporation

Part # ISL6210CRZ-T
Description  Dual Synchronous Rectified MOSFET Drivers
Download  10 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL6210CRZ-T Datasheet(HTML) 7 Page - Intersil Corporation

Back Button ISL6210CRZ-T Datasheet HTML 2Page - Intersil Corporation ISL6210CRZ-T Datasheet HTML 3Page - Intersil Corporation ISL6210CRZ-T Datasheet HTML 4Page - Intersil Corporation ISL6210CRZ-T Datasheet HTML 5Page - Intersil Corporation ISL6210CRZ-T Datasheet HTML 6Page - Intersil Corporation ISL6210CRZ-T Datasheet HTML 7Page - Intersil Corporation ISL6210CRZ-T Datasheet HTML 8Page - Intersil Corporation ISL6210CRZ-T Datasheet HTML 9Page - Intersil Corporation ISL6210CRZ-T Datasheet HTML 10Page - Intersil Corporation  
Zoom Inzoom in Zoom Outzoom out
 7 / 10 page
background image
7
FN6392.0
November 28, 2006
During turn-off of the lower MOSFET, the LGATE voltage is
monitored until it reaches a 1V threshold, at which time the
UGATE is released to rise. Adaptive shoot-through circuitry
monitors the upper MOSFET gate-to-source voltage during
UGATE turn-off. Once the upper MOSFET gate-to-source
voltage has dropped below a threshold of 1V, the LGATE is
allowed to rise.
In addition to gate threshold monitoring, a programmable
delay between MOSFET switching can be accomplished by
placing a resistor in series with the FCCM input. This delay
allows for maximum design flexibility over MOSFET
selection. The delay can be programmed from 5ns to 50ns
and is obtained from the absolute value of the current
flowing into the FCCM pin. If no resistor is used, the
minimum 5ns delay is selected. Gate threshold monitoring is
not affected by the addition or removal of the additional
dead-time. Refer to Figure 2 and Figure 3 for more detail.
The equation governing the dead-time seen in Figure 3 is
expressed as:
The equation can be rewritten to solve for RDELAY as
follows:
Internal Bootstrap Diode
This driver features an internal bootstrap diode. Simply
adding an external capacitor across the BOOT and PHASE
pins completes the bootstrap circuit.
The following equation helps select a proper bootstrap
capacitor size:
where QG1 is the amount of gate charge per upper MOSFET
at VGS1 gate-source voltage and NQ1 is the number of
control MOSFETs. The
ΔV
BOOT_CAP term is defined as the
allowable droop in the rail of the upper gate drive.
As an example, suppose two IRLR7821 FETs are chosen as
the upper MOSFETs. The gate charge, QG, from the data
sheet is 10nC at 4.5V (VGS) gate-source voltage. Then the
QGATE is calculated to be 22nC at PVCC level. We will
assume a 200mV droop in drive voltage over the PWM
cycle. We find that a bootstrap capacitance of at least
0.110
μF is required. The next larger standard value
1V
FCCM = VCC or GND
GATE A
GATE B
1V
FCCM = RESISTOR to VCC or GND
TDELAY = 5n - 50ns
GATE A
GATE B
FIGURE 2. PROGRAMMABLE DEAD-TIME
ADAPTIVE PROTECTION
WITH DELAY
ADAPTIVE SHOOT-THROUGH
PROTECTION
50
45
40
35
30
25
20
15
10
5
0
0
167
667
333
500
833
1000
RDELAY (kΩ)
tDELAY
FIGURE 3. ISL6210 PROGRAMMABLE DEAD-TIME vs
DELAY RESISTOR
T
DELAY ns
()
0.045
R
DELAY k
Ω
()
×
[] 5ns
+
=
(EQ. 1)
R
DELAY
()
T
DELAY ns
() 5ns
()
0.045
------------------------------------------------------
=
(EQ. 2)
C
BOOT_CAP
Q
GATE
ΔV
BOOT_CAP
--------------------------------------
Q
GATE
Q
G1
PVCC
V
GS1
------------------------------------
N
Q1
=
(EQ. 3)
ISL6210


Similar Part No. - ISL6210CRZ-T

ManufacturerPart #DatasheetDescription
logo
Renesas Technology Corp
ISL6210CRZ-T RENESAS-ISL6210CRZ-T Datasheet
498Kb / 10P
   Dual Synchronous Rectified MOSFET Drivers
More results

Similar Description - ISL6210CRZ-T

ManufacturerPart #DatasheetDescription
logo
Renesas Technology Corp
ISL6597 RENESAS-ISL6597 Datasheet
564Kb / 10P
   Dual Synchronous Rectified MOSFET Drivers
logo
Intersil Corporation
ISL6610CBZ INTERSIL-ISL6610CBZ Datasheet
278Kb / 11P
   Dual Synchronous Rectified MOSFET Drivers
November 22, 2006
ISL6610 INTERSIL-ISL6610 Datasheet
276Kb / 11P
   Dual Synchronous Rectified MOSFET Drivers
logo
Renesas Technology Corp
ISL6210 RENESAS-ISL6210 Datasheet
498Kb / 10P
   Dual Synchronous Rectified MOSFET Drivers
ISL6610 RENESAS-ISL6610 Datasheet
281Kb / 11P
   Dual Synchronous Rectified MOSFET Drivers
November 22, 2006
logo
Intersil Corporation
ISL6597 INTERSIL-ISL6597_06 Datasheet
259Kb / 10P
   Dual Synchronous Rectified MOSFET Drivers
HIP6601 INTERSIL-HIP6601 Datasheet
84Kb / 8P
   Synchronous-Rectified Buck MOSFET Drivers
logo
Richtek Technology Corp...
RT9618 RICHTEK-RT9618_11 Datasheet
469Kb / 12P
   Synchronous-Rectified Buck MOSFET Drivers
RT9619 RICHTEK-RT9619_11 Datasheet
427Kb / 11P
   Synchronous-Rectified Buck MOSFET Drivers
logo
Intersil Corporation
ISL6625ACRZ-T INTERSIL-ISL6625ACRZ-T Datasheet
412Kb / 10P
   Synchronous Rectified Buck MOSFET Drivers
September 19, 2012
More results


Html Pages

1 2 3 4 5 6 7 8 9 10


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