Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

BD6722FS Datasheet(PDF) 9 Page - Rohm

Part No. BD6722FS
Description  Multifunction Single-phase Full-wave Fan Motor Driver
Download  16 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  ROHM [Rohm]
Homepage  http://www.rohm.com
Logo 

BD6722FS Datasheet(HTML) 9 Page - Rohm

Zoom Inzoom in Zoom Outzoom out
 9 / 16 page
background image
9/12
Datasheet
Datasheet
BD6722FS
TSZ02201-0H1H0B100180-1-2
© 2012 ROHM Co., Ltd. All rights reserved.
28.JUL.2012 Rev.002
www.rohm.com
TSZ22111・15・001
●Application circuit example(Constant values are for reference)
Substrate design note
a) Motor power and ground lines are made as fat as possible.
b) IC power line is made as fat as possible.
c) IC ground line is common with the application ground except motor ground (i.e. hall ground etc.), and arranged
near to (–) land.
d) The bypass capacitors (Vcc side and Vm side) are arrangement near to Vcc terminal and FETs, respectively.
e) H+ and H– lines are arranged side by side and made from the hall element to IC as shorter as possible,
because it is easy for the noise to influence the hall lines.
Fig.21 PWM controllable 4 wires type (FG) motor application circuit
Protection of FG open-drain
Stabilization of REF voltage
Hall bias is set according to the
amplitude of hall element
output and hall input voltage
range.
Noise measures of substrate
Drive the PMOS FET gate by
constant current flowing to IC
Adjustment the PMOS FET
slew rate
Low-pass filter for RNF voltage
smoothing
So bypass capacitor,
arrangement near to FETs as
much as possible
So bypass capacitor,
arrangement near to Vcc
terminal as much as possible
Reverse-connected prevention
of the FAN connector
Reverse-connected prevention
of the FAN connector
Circuit that converts PWM duty
into DC voltage
Minimum output duty setting
Output PWM frequency setting
To limit motor current, the
current is detected.
Note the power consumption of
detection resistance.
Maximum output voltage and
current are 34V and 1.5A.
H
SIG
0
Ω to
330pF
to 1000pF
0.1µF to
PWM
M
470
Ω to 1kΩ
0
Ω to 2kΩ
1µF to
1µF to
200
to 20k
100pF
to 0.1µF
0.24
Ω to
Vcc
HALL
AMP
Vcl
SIGNAL
OUTPUT
HALL
COMP
CONTROL
LOGIC
PRE-
DRIVER
REF
OSC
QUICK
START
LOCK
PROTECT
TSD
PWM SOFT
SWITCHING
CURRENT
LIMIT COMP
SIGNAL
OUTPUT
PWM
COMP
PWM
COMP
H–
H+
MIN
TH
OSC
AL
REF
A1L
CS
RNF
GND
A2H
A2L
FG
10
9
14
13
12
11
16
15
1
2
3
4
5
6
7
8
Vcc
A1H


Html Pages

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


Datasheet Download




Link URL




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

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   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