Am4961a, Functional block diagram, Truth table – Diodes AM4961A User Manual
Page 3

AM4961A
Document number: DS36626 Rev. 1 - 2
3 of 17
October 2013
© Diodes Incorporated
AM4961A
A Product Line of
Diodes Incorporated
NE
W
P
R
OD
UC
T
Functional Block Diagram
Lock Shutdown
and
Auto Restart
Voltage
Reference
Hall Bias
Thermal Shutdown
Hysteresis Amp
Control
Circuit
Oscillation Circuit
CT
VCC
VREF
HB
HIN +
HIN -
VMIN
VPWM
COSC
GND
PGND
OUT1
OUT2
RD
FG
2 (3)
11 (12)
9 (10)
8 (9)
10 (11)
3 (4)
4 (5)
5 (6)
13 (14)
(16)
14 (15)
1 (1)
7 (8)
6 (7)
12 (13)
Pre - driver
20
Ω
20
Ω
A (B): A for HTSSOP-14 pins B for SSOP-16 pins
Truth Table
HIN-
HIN+
COSC (Note 5)
CT
OUT1
OUT2
FG
RD
Mode
H
L
H
L
H
L
L
L
Rotation (Drive)
L
H
L
H
OFF
H
L
L
OFF
L
L
Rotation (Recirculate)
L
H
L
OFF
OFF
H
L
H
H
H
OFF
L
OFF
Lock Protection
L
H
OFF
H
OFF
H
L
L
OFF
OFF
L
L
H
OFF
OFF
OFF
Note:
5. V
OSC
(H)>V
PWM
, V
OSC
(L)<V
PWM
.