数据搜索系统,热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

FAN6520AM 数据表(PDF) 7 Page - Fairchild Semiconductor

部件名 FAN6520AM
功能描述  Single Synchronous Buck PWM Controller
Download  15 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

FAN6520AM 数据表(HTML) 7 Page - Fairchild Semiconductor

Back Button FAN6520AM Datasheet HTML 3Page - Fairchild Semiconductor FAN6520AM Datasheet HTML 4Page - Fairchild Semiconductor FAN6520AM Datasheet HTML 5Page - Fairchild Semiconductor FAN6520AM Datasheet HTML 6Page - Fairchild Semiconductor FAN6520AM Datasheet HTML 7Page - Fairchild Semiconductor FAN6520AM Datasheet HTML 8Page - Fairchild Semiconductor FAN6520AM Datasheet HTML 9Page - Fairchild Semiconductor FAN6520AM Datasheet HTML 10Page - Fairchild Semiconductor FAN6520AM Datasheet HTML 11Page - Fairchild Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 15 page
background image
©2005 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN6520A Rev. 1.0.5
7
Figure 4. Soft-Start Interval
The FAN6520A incorporates a MOSFET shoot-through
protection method that allows a converter to both sink
and source current. Care should be exercised when
designing a converter with the FAN6520A when it is
known that the converter may sink current.
When the converter is sinking current, it is behaving as a
boost converter regulating its input voltage. This means
that the converter is boosting current into the VCC rail,
which supplies the bias voltage to the FAN6520A. If this
current has nowhere to go—such as to other distributed
loads on the VCC rail, through a voltage limiting protec-
tion device, or other methods—the capacitance on the
VCC bus absorbs the current. This allows the voltage
level of the VCC rail to increase. If the voltage level of the
rail is boosted to a level that exceeds the maximum volt-
age rating of the FAN6520A, the IC experiences an irre-
versible
failure
and
the
converter
is
no
longer
operational. Ensure that there is a path for the current to
follow, other than the capacitance on the rail, to prevent
this failure mode.
Application Information
Layout Considerations
In any high-frequency switching converter, layout is very
important. Switching current from one power device to
another can generate voltage transients across the
impedances of the interconnecting bond wires and circuit
traces. Use wide, short-printed traces to minimize inter-
connecting impedances. The critical components should
be located as close together as possible, using ground
plane construction or single-point grounding.
Figure 5. Printed Circuit Board Power and
Ground Planes or Islands
Figure 5 shows the critical power components of the con-
verter. To minimize voltage overshoot, the interconnect-
ing wires (indicated by heavy lines) should be part of a
ground or power plane in a printed circuit board. The
components shown in Figure 5 should be located as
close together as possible. Note that the capacitors CIN
and COUT may each represent numerous physical capac-
itors. Locate the FAN6520A within two inches of the Q1
and Q2 MOSFETs. The circuit traces for the MOSFETs’
gate and source connections from the FAN6520A must
be sized to handle up to 1A peak current.
Figure 5 shows the circuit traces that require additional
layout consideration. Use single point and ground plane
construction for the circuits shown. Minimize any leakage
current paths on the COMP/OCSET pin and locate the
resistor, ROSCET, close to the COMP/OCSET pin
because the internal current source is only 20µA. Pro-
vide local VCC decoupling between the VCC and GND
pins. Locate the capacitor, CBOOT, as close as practical
to the BOOT and PHASE pins. All components used for
feedback compensation should be located as close to
the IC as practical.
Figure 6. PCB Small Signal Layout Guidelines
+VOUT
Q2
LDRV
SW
HDRV
Q1
CIN
LOUT
COUT
Vin
+VOUT
Q2
VCC
SW
BOOT
LOUT
COUT
GND
CBOOT
CVCC
+5V
DBOOT
FAN6520A
Q1
Vin
COMP/OCSET
+5V


类似零件编号 - FAN6520AM

制造商部件名数据表功能描述
logo
Fairchild Semiconductor
FAN6520AM FAIRCHILD-FAN6520AM Datasheet
580Kb / 15P
   Single Synchronous Buck PWM Controller
FAN6520AMX FAIRCHILD-FAN6520AMX Datasheet
580Kb / 15P
   Single Synchronous Buck PWM Controller
More results

类似说明 - FAN6520AM

制造商部件名数据表功能描述
logo
Taiwan Semiconductor Co...
TS3404 TSC-TS3404_1 Datasheet
379Kb / 10P
   Single Synchronous Buck PWM Controller
logo
Fairchild Semiconductor
FAN6520A FAIRCHILD-FAN6520A Datasheet
580Kb / 15P
   Single Synchronous Buck PWM Controller
logo
Richtek Technology Corp...
RT8238B RICHTEK-RT8238B Datasheet
219Kb / 15P
   Single Synchronous Buck PWM Controller
logo
Taiwan Semiconductor Co...
TS3405 TSC-TS3405 Datasheet
409Kb / 10P
   Single Synchronous Buck PWM Controller
logo
Richtek Technology Corp...
RT8228A RICHTEK-RT8228A Datasheet
201Kb / 15P
   Single Synchronous Buck PWM Controller
October 2021
logo
Fairchild Semiconductor
FAN6520B FAIRCHILD-FAN6520B Datasheet
550Kb / 14P
   Single Synchronous Buck PWM Controller
logo
BCD Semiconductor Manuf...
AP3586A,B,C BCDSEMI-AP3586A,B,C Datasheet
624Kb / 17P
   Single Phase Synchronous Buck PWM Controller
AP3581A,B,C BCDSEMI-AP3581A,B,C Datasheet
575Kb / 13P
   Single Phase Synchronous Buck PWM Controller
logo
Richtek Technology Corp...
RT8120 RICHTEK-RT8120_V01 Datasheet
223Kb / 17P
   Single-Phase Synchronous Buck PWM Controller
logo
Diodes Incorporated
AP3581A DIODES-AP3581A Datasheet
756Kb / 13P
   SINGLE PHASE SYNCHRONOUS BUCK PWM CONTROLLER
November 2018 Rev. 2 - 4
More results


Html Pages

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


数据表 下载

Go To PDF Page


链接网址




隐私政策
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   链接交换   |   制造商名单
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