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3933 데이터시트 PDF




Allegro MicroSystems에서 제조한 전자 부품 3933은 전자 산업 및 응용 분야에서
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부품번호 3933 기능
기능 THREE-PHASE POWER MOSFET CONTROLLER
제조업체 Allegro MicroSystems
로고 Allegro MicroSystems 로고


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3933 데이터시트, 핀배열, 회로
3933
GHC 5
CC 6
GLB 7
SB 8
GHB 9
CB 10
GLA 11
SA 12
GHA 13
29 SENSE
28 RC
27 PWM
26 BRKSEL
25 BRKCAP
24 BRAKE
1293 DIR
22 H2
21 H3
Dwg. PP-068
ABSOLUTE MAXIMUM RATINGS
at TA = 25°C
Supply Voltage, VBB ............................. 28 V
(peak) .............................................. 30 V
Terminal Voltage, VCCOUT ................. 13.2 V
(peak) .............................................. 15 V
Logic Input Voltage Range,
VIN .................. -0.3 V to VLCAP + 0.3 V
Sense Voltage Range,
VSENSE ............................. -5 V to VLCAP
Output Voltage Range,
VSA, VSB, VSC .................. -5 V to +30 V
VGHA, VGHB, VGHC . -5 V to VBB + 14 V
VCA, VCB, VCC ..................... VSX + 14 V
Operating Temperature Range,
TA ................................. -20°C to +85°C
Junction Temperature, TJ ................. +150°C
Storage Temperature Range,
TS ............................... -55°C to +150°C
THREE-PHASE POWER
MOSFET CONTROLLER
The A3933SEQ is a three-phase MOSFET controller for use with
bipolar brushless dc motors. It drives all n-channel external power
FETs, allowing system cost savings and minimizing r(DS)on power loss.
The high-side drive block is implemented with bootstrap capacitors at
each output to provide the floating positive supply for the gate drive.
The high-side circuitry also employs a unique “intelligent” FET
monitoring circuit that ensures the gate voltages are at the proper levels
before turn-on and during the ON cycle. This device is targeted for
applications with motor supplies from 12 V to 28 V.
Internal fixed off-time PWM current-control circuitry can be used to
regulate the maximum load current to a desired value. The peak load-
current limit is set by the user’s selection of an input reference voltage
and external sensing resistor. The fixed off-time pulse duration is set
by a user-selected external RC timing network.
A power-loss braking circuit brakes the motor on an under-voltage
condition. The device is configured to either coast or dynamically
brake the motor when this occurs.
The A3933SEQ is supplied in a 32-lead rectangular (9 x 7) plastic
chip carrier (quad pack) for minimum-area, surface-mount applica-
tions.
FEATURES AND BENEFITS
I Drives External N-Channel FETs
I Intelligent High-Side Gate Drive
I Selectable Coast or Dynamic Brake on Power Down
I Adjustable Dead Time for Cross-Conduction Protection
I Selectable Fast or Slow Current-Decay Modes
I Internal PWM Peak Current Control
I Reset/Coast Input
I 120° Hall Commutation with Internal Pullup
I Internal 5-V Regulator
I Low-Side Synchronous Rectification
I Direction Control
I PWM Speed-Control Input
I Fault-Diagnostic Output
I Under-Voltage Protection




3933 pdf, 반도체, 판매, 대치품
3933
THREE-PHASE POWER
MOSFET CONTROLLER
ELECTRICAL SPECIFICATIONS at TA = 25°C, VBB = VCCOUT = 12 V, Cload = 0.001 µF, Cboot = 0.047 µF
(unless noted otherwise), continued.
Parameter
Bootstrap Capacitor
Bootstrap Charge Current
Bootstrap Output Voltage
Leakage Current
Current Limit
Offset Voltage
Input bias current
RC Charge Current
RC Voltage Threshold
PWM frequency Range
Protection Circuitry
Undervoltage Threshold
Boot-Strap Capacitor Volt.
High-Side Gate-Source Volt.
Fault Output Voltage
Brake Function
Brake Cap. Supply Current
Low-Side Gate Voltage
Symbol Conditions
ICx
VCx Reference Sx
ICx High side switched high, Sx = VBB
Vio
ISENSE
IRC
VRCL
VRCH
fPWM
Operating
UVLO
VCxSx
VGHxSx
VFAULT
Increasing VBB
Decreasing VBB
VBB = 12 V
IO = 1 mA
IBRKCAP
VGLxH
VBB = 8 V, BRKSEL 2 V
VBB = 0, BRKCAP = 8 V
Limits
Min Typ Max Units
50 100 150
9.5 10.5 11.5
– 15 20
mA
V
µA
– 0 ±5.0
– – -1.0
850 945 1040
1.0 1.1 1.2
2.7 3.0 3.2
20 – 100
mV
µA
µA
V
V
kHz
9.7 10.2 10.7
9.35 – 10.35
9.5 –
– 6.3 –
– – 0.8
V
V
V
V
V
– 30 –
– 6.6 –
µA
V
NOTES: 1. Typical Data is for design information only.
2. Negative current is defined as coming out of (sourcing) the specified device terminal.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000

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3933 전자부품, 판매, 대치품
3933
THREE-PHASE POWER
MOSFET CONTROLLER
Commutation Truth Table
Logic Inputs
Driver Outputs
H1 H2 H3 DIR GLA GLB GLC GHA GHB GHC SA SB SC
HLH H L LH HL L HZL
HL L H L LH LHL ZHL
HH L
H HLL
LHL
LHZ
LHL
H HLL
L LH
L ZH
L HH
H
LHL
L LH
ZLH
LLH H LHL HLL HLZ
HLH L HL L L LH LZH
HLL L LHL LLH ZLH
HHL L LHL HL L HL Z
LHL L L LH HL L HZL
LHH L L LH LHL ZHL
L LH L HL L LHL LHZ
MODE PWM
LL
LH
HL
HH
XX
RESET
L
L
L
L
H
Mode
Fast decay
Fast decay
Slow decay
Slow decay
Coast
Input Logic
Operation
PWM chop mode, current decay
Peak current limit, selected drivers ON
PWM chop mode. current decay
Peak current limit, selected drivers ON
All gate drive outputs OFF, clear fault logic
BRAKE BRKSEL
LL
LH
HL
HH
Brake Control
Normal Operation
Normal run mode
Normal run mode
Dynamic brake, all sink gate drives ON
Dynamic brake, all sink gate drives ON
Under Voltage or Power Loss Condition
Coast, all gate drive outputs OFF
Dynamic brake, all sink gate drives ON
Coast, all gate drive outputs OFF
Dynamic brake, all sink gate drives ON
L = Low Level, H = High Level, X = Dont Care, Z = High Impedance
www.allegromicro.com

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관련 데이터시트

부품번호상세설명 및 기능제조사
3932

THREE PHASE POWER MOSFET CONTROLLER

Allegro MicroSystems
Allegro MicroSystems
3933

THREE-PHASE POWER MOSFET CONTROLLER

Allegro MicroSystems
Allegro MicroSystems

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