MC33035_06 Datasheet, PDF (1/28 Pages) ON Semiconductor – Brushless DC Motor Controller

MC33035, NCV33035
Brushless DC
Motor Controller
The MC33035 is a high performance second generation monolithic
brushless DC motor controller containing all of the active functions
required to implement a full featured open loop, three or four phase
motor control system. This device consists of a rotor position decoder
for proper commutation sequencing, temperature compensated
reference capable of supplying sensor power, frequency
programmable sawtooth oscillator, three open collector top drivers,
and three high current totem pole bottom drivers ideally suited for
driving power MOSFETs.
Also included are protective features consisting of undervoltage
lockout, cycle−by−cycle current limiting with a selectable time
delayed latched shutdown mode, internal thermal shutdown, and a
unique fault output that can be interfaced into microprocessor
controlled systems.
Typical motor control functions include open loop speed, forward or
reverse direction, run enable, and dynamic braking. The MC33035 is
designed to operate with electrical sensor phasings of 60°/300° or
120°/240°, and can also efficiently control brush DC motors.
Features
• 10 to 30 V Operation
• Undervoltage Lockout
• 6.25 V Reference Capable of Supplying Sensor Power
• Fully Accessible Error Amplifier for Closed Loop Servo
Applications
• High Current Drivers Can Control External 3−Phase MOSFET
Bridge
• Cycle−By−Cycle Current Limiting
• Pinned−Out Current Sense Reference
• Internal Thermal Shutdown
• Selectable 60°/300° or 120°/240° Sensor Phasings
• Can Efficiently Control Brush DC Motors with External MOSFET
H−Bridge
• NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
• Pb−Free Packages are Available
http://onsemi.com
P SUFFIX
PLASTIC PACKAGE
CASE 724
24
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751E
24
(SO−24L)
1
PIN CONNECTIONS
Top Drive
Output
B_T 1
A_T 2
Fwd/Rev 3
Sensor
Inputs
S_A 4
S_B 5
S_C 6
Output Enable 7
Reference Output 8
Current Sense
Noninverting Input
9
Oscillator ¹⁰
Error Amp
Noninverting Input
11
Error Amp
Inverting Input
12
24 C_T
23 Brake
22 60°/120° Select
21 A_B
20 B_B
19 C_B
Bottom
Drive
Outputs
18 V_C
17 V_CC
16 Gnd
15
Current Sense
Inverting Input
14 Fault Output
13
Error Amp Out/
PWM Input
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 27 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 27 of this data sheet.
© Semiconductor Components Industries, LLC, 2006
1
April, 2006 − Rev. 8
Publication Order Number:
MC33035/D