Data Sheet
Single Phase Full Wave Direct PWM Motor Driver AM4963/AM4963R
Functional Block Diagram
V+
104k
VMIN
3 (4)
Triangle Wave
Thermal
Shutdown
6 (7)
FG
42k
11 (12)
V+
90k
17k
54k
V+
51k
V+
6 (7)
93k
Pre-driver
RD
RADJ
PWM
4 (5)
56k
18k
2 (3)
VCC
CF
RT
TL
TH
HIN+
HIN-
5 (6)
7 (8)
8 (9)
13 (15)
9 (10)
10 (11)
V
REG
Control
Circuit
V+
1 (2)
OUT2
Hysteresis Amp
Lock Shutdown
and
Auto Restart
12 (13)
(1)
14 (16)
OUT1
CT
A (B)
A for HTSSOP-14
B for SSOP-16
PGND
Figure 3. Functional Block Diagram of AM4963/AM4963R
Truth Table
Items
1
2
3
4
5
6
IN-
H
L
H
L
H
L
IN+
L
H
L
H
L
H
L
H
VCF
L
L
H
CT
OUT1
H
L
Off
L
H
Off
OUT2
L
H
L
Off
Off
H
FG
L
Off
L
Off
L
Off
H (OFF)
L (ON)
RD
Mode
Rotation
PWM Off
Rotation
Recirculation
PWM Off
Lock Protection
Sep. 2011
Rev. 1. 0
4
BCD Semiconductor Manufacturing Limited