Motor Driver. BD6722FS Datasheet

BD6722FS Driver. Datasheet pdf. Equivalent

Part BD6722FS
Description Multifunction Single-phase Full-wave Fan Motor Driver
Feature Datasheet DC Brushless Fan Motor Drivers Multifunction Single-phase Full-wave Fan Motor Driver BD67.
Manufacture Rohm
Datasheet
Download BD6722FS Datasheet



BD6722FS
Datasheet
DC Brushless Fan Motor Drivers
Multifunction Single-phase Full-wave
Fan Motor Driver
BD6722FS
General description
BD6722FS is a half pre-driver that controls the source
side motor drive part composed of the power transistors.
Moreover, it corresponds to 800mA motor, because the
driving current and the composition parts are optimized.
Package
SSOP-A16
W (Typ.) x D (Typ.) x H (Max.)
6.60mm x 6.20mm x 1.71mm
Features
„ Half pre-driver including power NDMOS FET
„ Speed controllable by DC / direct PWM input
„ PWM soft switching
„ Quick start
„ Current limit
„ Lock protection and automatic restart
„ Rotation speed pulse signal (FG) output
„ Lock alarm signal (AL) output
SSOP-A16
Application
„ Fan motors for general consumer equipment of desktop PC, and Server, etc.
Absolute maximum ratings
Parameter
Symbol
Limit
Supply voltage
Power dissipation
Vcc 20
Pd 812.5 *1
Operating temperature range
Topr –40 to +100
Storage temperature range
Tstg –55 to +150
High side output voltage
Voh 34
Low side output voltage
Low side output current
Vol 34
Iol 1.5 *2
Rotation speed pulse signal (FG) output voltage
Vfg
20
Rotation speed pulse signal (FG) output current
Ifg
10
Lock alarm signal (AL) output voltage
Val 20
Lock alarm signal (AL) output current
Ial 10
Reference voltage (REF) output current
Iref
8
Input voltage (TH)
Vin 15
Junction temperature
Tj 150
*1 Reduce by 6.5mW/°C over Ta=25°C. (On 70.0mm×70.0mm×1.6mm glass epoxy board)
*2 This value is not to exceed Pd.
Unit
V
mW
°C
°C
V
V
A
V
mA
V
mA
mA
V
°C
Recommended operating conditions
Parameter
Operating supply voltage range
Operating input voltage range (H+, H–, MIN)
(more than Vcc=9V)
Operating input voltage range (H+, H–, MIN)
(less than Vcc=9V)
Symbol
Vcc
Vin
Limit
4.5 to 17.0
0 to 7
0 to Vcc–2
Unit
V
V
V
Product structureSilicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed protection against radioactive rays
1/12
TSZ02201-0H1H0B100180-1-2
28.JUL.2012 Rev.002



BD6722FS
BD6722FS
Datasheet
Pin configuration
GND
OSC
MIN
TH
Vcc
A1H
A1L
RNF
1
2
3
4
5
6
7
8
(TOP VIEW)
16 AL
15 FG
14 REF
13 H–
12 H+
11 CS
10 A2H
9 A2L
Fig.1 Pin configuration
Block diagram
Pin description
P/No. T/Name
1 GND
2 OSC
3 MIN
4 TH
5 Vcc
6 A1H
7 A1L
8 RNF
9 A2L
10 A2H
11 CS
12 H+
13 H–
14 REF
15 FG
16 AL
Function
Ground terminal (signal ground)
Oscillating capacitor connecting
terminal
Minimum output duty setting terminal
Output duty controllable input terminal
Power supply terminal
High side output terminal 1
Low side output terminal 1
Output current detecting resistor
connecting terminal (motor ground)
Low side output terminal 2
High side output terminal 2
Output current detection terminal
Hall + input terminal
Hall – input terminal
Reference voltage output terminal
Speed pulse signal output terminal
Lock alarm signal output terminal
1 GND
TSD
PWM SOFT
SWITCHING
SIGNAL
OUTPUT
AL 16
2 OSC
OSC
3 MIN
4 TH
Vcc
5
Vcc
PWM
COMP
PWM
COMP
CONTROL
LOGIC
QUICK
START
6 A1H
7 A1L
PRE-
DRIVER
SIGNAL
OUTPUT
FG 15
REF REF 14
H AL L
AMP
H AL L
COMP
LOCK
PROTECT
H– 13
H+ 12
Vcl
CURRENT
LIMIT COMP
CS 11
A2 H
10
8 RNF
A2L 9
I/O truth table
Hall input
H+ H– A1H
H L Hi-Z
LHL
H; High, L; Low, Hi-Z; High impedance
FG output is open-drain type.
Motor state
AL
Rotating
L
Locking
Hi-Z
L; Low, Hi-Z; High impedance
AL output is open-drain type.
Fig.2 Block diagram
Driver output
A1L A2H A2L
L L Hi-Z
Hi-Z Hi-Z
L
FG
Hi-Z
L
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/12
TSZ02201-0H1H0B100180-1-2
28.JUL.2012 Rev.002





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