Fan Motor Driver
Description
Datasheet
DC Brushless Fan Motor Driver
Multifunction Single-phase Full-wave Fan Motor Driver
BD61251FV
General Description BD61251FV is pre-driver IC to drive single phase H bridge output composed of external MOS FET.
It incorporates various functions such as speed controllable by PWM, PWM soft switching, Input / output duty slope adjustment.
Features Pre Driver for External Power MOS FET Speed Controllable by PWM Input / Output Duty Slope Adjustment Silent Drive by the PWM Soft Switching Lead Angle Function (Fixed value) Soft Start Standby Mode Current Limit Lock Protection and Automatic Restart Rotation Speed Pulse Signal(FG)
Key Specifications
Operating Voltage Range: Operating Temperature Range:
4.
5V to 16V -40°C to +105°C
Package SSOP-B16
W (Typ) x D (Typ) x H (Max) 5.
00mm x 6.
40mm x 1.
35mm
Applications General consumer equipment of Desktop PC, Server, etc.
Office equipment, Copier, FAX, Laser Printer, etc.
Typical Application Circuits
SSOP-B16
PWM ( )
HALL
5V (Typ)
PWM
PWM I/O
VCC OSC
REF VOLTAGE REGULATOR
HP + HM COMP
-
CONTROL LOGIC
A1H
PREDRIVE
A1L A2H
A2L
SSW
SST A/D
CONVERTER ADJ
SLP
GND
+ COMP
-
TSD
CS FG
OUT1
M
()
SIG
OUT2
A2H A2L
Figure 1.
Application of Direct PWM Input
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, Ltd.
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TSZ22111・14・001
○This product has no designed protection against radioactive rays
1/24
TSZ02201-0H1H0B102100-1-2 12.
Oct.
2017 Rev.
001
BD61251FV
Pin Configuration
(TOP VIEW)
A1H 1
A1L 2
VCC 3
FG 4
PWM 5
HP 6
HM 7
REF 8
16 A2H 15 A2L 14 CS 13 GND 12 SSW 11 SST 10 ADJ 9 SLP
Pin Description
Pin No.
Pin Name
Function
1 A1H High side output 1
2 A1L Low side output 1
3 VCC Power supply
4 FG Speed pulse signal output
5 PWM PWM signal input
6 HP Hall signal input +
7 HM Hall signal input -
8 REF Reference voltage output
9 SLP Input-output duty slope setting
10 ADJ Output duty correction
11 SST Sof...
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