Automotive 3-Phase MOSFET Driver
A4933
5
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Characteristics Symbol Test Conditions Min. Typ. Max. Units
Dead Time
2
t
DEAD
RDEAD tied to GND – 0 – ns
R
DEAD
= 3 kΩ – 180 – ns
R
DEAD
= 30 kΩ 815 960 1110 ns
R
DEAD
= 240 kΩ – 3.5 – μs
RDEAD tied to VDD – 6 – μs
Logic Inputs and Outputs
FF1 and FF2 Fault Output V
FF(L)
I
FF
= 1 mA, fault not present – – 0.4 V
FF1 and FF2 Fault Output Leakage Current
3
I
FF(H)
V
FF
= 5 V, fault present –1 – 1 μA
RDEAD Input Low Voltage V
DEAD(L)
– – 0.2 V
RDEAD Current
3
I
DEAD
RDEAD = GND –200 – –70 μA
Input Low Voltage V
IN(L)
––
0.3 ×
V
DD
V
Input High Voltage V
IN(H)
0.7 ×
V
DD
––V
Input Hysteresis V
INhys
300 500 – mV
Input Current (Except RESET and CCEN)
3
I
IN
0 V < V
IN
< V
DD
–1 – 1 μA
Input Pulldown Resistor (RESET and CCEN) R
PD
–50–kΩ
RESET Pulse Time
4
t
RES
0.1 – 3.5 μs
RESET Delay
4
t
DR
– – 200 ns
FF2 Clock Input High Voltage V
ILC
––
0.3 ×
V
DD
V
FF2 Clock Input Low Voltage V
IHC
0.7 ×
V
DD
––V
FF2 Clock Input Hysteresis V
IChys
300 500 – mV
FF2 Clock Low to Valid Data Delay
4
t
DF
– – 100 ns
FF2 Clock Low to Fault Reset Delay
4
t
RF
– – 100 ns
FF2 Clock High Time
4
t
HF
500 – – ns
FF2 Clock Low Time
4
t
LF
500 – – ns
Current Sense Differential Amplifier
Differential Input Voltage V
ID
V
ID
= CSP – CSN, –1.3 V < V
CM
< 4 V –V
DD
–V
DD
mV
Input Bias Current
3
I
BIAS
CSP = CSN = 0 V –100 0 100 nA
Input Offset Current
3
I
OS
CSP = CSN = 0 V –100 0 100 nA
Input Offset Voltage V
IOS
CSP = CSN = 0 V –10 – +10 mV
Input Offset Voltage Drift ∆V
IOS
CSP = CSN = 0 V – 10 – μV/°C
Input Common Mode Range CMR CSP = CSN –1.5 – 4 V
Open Loop Gain A
Vopn
40 mV< V
ID
< 175 mV, V
CM
in range 100 – – dB
Closed Loop Gain A
Vclos
40 mV< V
ID
< 175 mV, V
CM
in range 5 – – V/V
Continued on the next page…
ELECTRICAL CHARACTERISTICS (continued) valid at T
J
= –40°C to 150°C, V
DD
= 3 to 5.5 V, V
BB
= 7 to 50 V,
unless noted otherwise
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