mlx90401 Melexis Company, mlx90401 Datasheet - Page 6

• Manufacturer Part Number: mlx90401
• Description: Brushless Dc Motor Controller Not For New Designs!
• Manufacturer: Melexis Company

7.2 Block diagram
3901090401
Rev 005
Fwd/Rev (6)
Osc R/C (8)
Speed Adj /
Disable (7)
Select (11)
/Brake (9)
GND (10)
60°/120°
V
S
(1)
V
REG
(internal)
3.5KΩ
3.5KΩ
3.5KΩ
Sawtooth
Oscillator
+
-
+
-
5V
5V
5V
5V Regulator
(To Logic)
UVLO
UVLO
(variable)
25kHz
OSC -
Debouncer
Debouncer
Debouncer
Chop
UVLO
VREG(internal)
Figure 2 : Block diagram
Output Control
Charge Pump
Page 6 of 13
Logic
Note: only one channel shown
Brushless DC Motor Controller
12V Regulator
(To Boost)
Shifter
Level
3.5KΩ
3.5KΩ
3.5KΩ
5V
5V
5V
PWR GND (12)
FB (16,19,22)
GT (17,20,23)
GB (13,14,15)
MLX90401
Cap Boost
(18,21,24)
Hall A (3)
Hall B (4)
Hall C (5)
V
REF
(2)
Data sheet
V+
Oct/05