AMT49406 Controller Datasheet

AMT49406 Datasheet PDF, Equivalent


Part Number

AMT49406

Description

50V Code-Free FOC BLDC Motor Controller

Manufacture

Allegro

Total Page 19 Pages
Datasheet
Download AMT49406 Datasheet


AMT49406
AMT49406
50 V Code-Free FOC BLDC Motor Controller
FEATURES AND BENEFITS
• Code-free sensorless field-oriented control (FOC)
• Proprietary non-reverse fast startup
• Soft-On Soft-Off (SOSO) for quiet operation
• Analog / PWM / Clock mode speed control
• Closed-loop speed control
• Configurable current limit
• Windmill startup operation
• Lock detection
• Short-circuit protection (OCP)
• Brake and direction inputs
APPLICATIONS
• Ceiling fans
• Pedestal fans
• Bathroom exhaust fans
• Home appliance fans and pumps
PACKAGES
DESCRIPTION
TheAMT49406 is a 3-phase, sensorless, brushless DC (BLDC)
motor driver (gate driver) which can operate from 5.5 to 50 V.
A field-oriented control (FOC) algorithm is fully integrated to
achieve the best efficiency and acoustic noise performance.The
device optimizes the motor startup performance in a stationary
condition, a windmill condition, and even in a reverse windmill
condition.
Motor speed is controlled through analog, PWM, or CLOCK
input. Closed-loop speed control is optional, and RPM-to-clock
frequency ratio is programmable.
A simple I2C interface is provided for setting motor-rated
voltage, rated current, rated speed, resistance, and startup
profiles.
TheAMT49406 is available in a 24-contact 4 mm × 4 mm QFN
with exposed thermal pad (suffix ES) and a 24-lead TSSOP
with exposed thermal pad (suffix LP). These packages are lead
(Pb) free, with 100% matte-tin leadframe plating.
24-contact QFN
with exposed thermal pad
4 mm × 4 mm × 0.75 mm
(ES package)
24-lead TSSOP
with exposed thermal pad
(LP package)
Not to scale
FG
SPD
FAULT
DIR
BRK
0.22 µF
0.1 µF
VBB
0.1 µF
CP1 CP2 VCP VBB
AMT49406
VREG
SENN
SENP
GHx
GLx
LSS
AMT49406-DS, Rev. 1
MCO-0000542
Figure 1: Typical Application
January 24, 2019

AMT49406
AMT49406
50 V Code-Free FOC BLDC Motor Controller
SELECTION GUIDE
Part Number
AMT49406GESSR
Ambient Temperature
Range (TA) (°C)
–40 to 105
AMT49406GLPTR
–40 to 105
Packaging
24-contact QFN with exposed thermal pad
24-lead TSSOP with exposed thermal pad
Packing
6000 pieces per 13-inch reel
4000 pieces per 13-inch reel
ABSOLUTE MAXIMUM RATINGS
Characteristic
Symbol
Supply Voltage
Logic Input Voltage Range
Logic Output
VBB
VIN
VO
LSS
VLSS
VREG
VREG
SENN, SENP
VSENN, VSENP
Output Voltage
GHx
GLx
VCP
CP1
CP2
Junction Temperature
Storage Temperature Range
Operating Temperature Range
VOUT
VGHx
VGLx
VCP
VCP1
VCP2
TJ
Tstg
TA
SPD, BRAKE, DIR
FG (I < 5 mA)
DC
tW < 500 ns
DC
tW < 500 ns
SA, SB, SC
Range G
Notes
Rating
50
–0.3 to 6
6
±500
±4
0 to 4
±500
±4
–2 to VBB + 2
VSx – 0.3 to VCP + 0.3
VLSS – 0.3 to 8.5
VBB – 0.3 to VBB + 8
– 0.3 to VBB + 0.3
VBB – 0.3 to VCP + 0.3
150
–55 to 150
–40 to 105
Unit
V
V
V
mV
V
V
mV
V
V
V
V
V
V
V
°C
°C
°C
THERMAL CHARACTERISTICS
Characteristic
Symbol
Package Thermal Resistance
RθJA
Test Conditions*
24-contact QFN (package ES), on 2-sided PCB 1-in.2 copper
24-lead TSSOP (package LP), on 2-sided PCB 1-in.2 copper
*Additional thermal information available on the Allegro website.
Value
45
36
Unit
°C/W
°C/W
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
2


Features AMT49406 50 V Code-Free FOC BLDC Motor C ontroller FEATURES AND BENEFITS • C ode-free sensorless field-oriented cont rol (FOC) • Proprietary non-reverse fast startup • Soft-On Soft-Off (SOS O) for quiet operation • Analog / PW M / Clock mode speed control • Close d-loop speed control • Configurable current limit • Windmill startup ope ration • Lock detection • Short-c ircuit protection (OCP) • Brake and direction inputs APPLICATIONS • Ceil ing fans • Pedestal fans • Bathro om exhaust fans • Home appliance fan s and pumps PACKAGES DESCRIPTION TheAM T49406 is a 3-phase, sensorless, brushl ess DC (BLDC) motor driver (gate driver ) which can operate from 5.5 to 50 V. A field-oriented control (FOC) algorith m is fully integrated to achieve the be st efficiency and acoustic noise perfor mance.The device optimizes the motor st artup performance in a stationary condi tion, a windmill condition, and even in a reverse windmill condition. Motor speed is controlled through analog, PWM, or CLOCK input.
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