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ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Table 4. Dynamic Electrical Characteristics (continued)
Characteristics noted under conditions 8.0V ≤ V PWR = V BAT ≤ 40V, -40 ° C ≤ T A ≤ 125 ° C, unless otherwise noted. Typical
values noted reflect the approximate parameter means at T A = 25°C under nominal conditions unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
GATE DRIVE (CONTINUED)
Duty Cycle (38) , (39)
t DC
0.0
–
96
%
,
100% Duty Cycle Duration
(38) (39)
t DC
–
–
Unlimited
s
Maximum Programmable Deadtime
(40)
t MAX
10.2
15
19.6
μs
OVERCURRENT COMPARATOR
Overcurrent Protection Filter Time
Rise Time (OC_OUT)
t OC
t ROC
0.9
10
–
–
3.5
240
μs
ns
10% - 90%
C L = 100 pF
Fall Time (OC_OUT)
t FOC
10
–
200
ns
90% - 10%
C L = 100 pF
PHASE COMPARATOR
Propagation Delay Time to 50% of V DD ; C L ≤ 100 pF
ns
Rising Edge Delay
Falling Edge Delay
t R
t F
–
–
–
–
200
350
Match Conversion Time (Prop Delay Mismatch of Three Phases)
t MATCH
–
–
100
ns
C L = 100 pF
(38)
DESATURATION DETECTOR
Desaturation and Phase Error Blanking Time
(38)
Filter Time
Fault Must be Present for This Time to Trigger
t BLANK
t FILT
4.0
560
–
1000
8.1
1230
μs
ns
CURRENT SENSE AMPLIFIER
Output Settle Time to 99% (38) , (41)
t SETTLE
–
1.0
2.0
μs
RL = 1k ? , C L = 500pF
0.3 < V O < 4.8V
Gain = 5 to 15
Notes
38. This parameter is guaranteed by design, not production tested.
39. Maximum duty cycle is actually 100% because there is an internal charge pump to maintain the gate voltage in the 100% on condition.
However, in high duty cycle cases, there may not be sufficient time to recharge the bootstrap capacitors during the off time. Large
bootstrap capacitors will allow high duty cycles to be obtained for a short time. For applications needing closer to 100% duty cycle,
external diodes may optionally be used to provide high peak current charging capability to the bootstrap capacitors. These diodes would
be connected between VLS and the Px_BOOTSTRAP pins. In applications with lower gate charge requirements, the maximum duty
cycle can also be increased.
40. A Minimum Deadtime of 0.0 can be set via a SPI command. When Deadtime is set via a DEADTIME command, a minimum of 1 clock
cycle duration and a maximum of 255 clock cycles is set using the internal time base clock as a reference. Commands exceeding this
value limits at this value.
41. Without considering any offsets such as input offset voltage, internal mismatch and assuming no tolerance error in external resistors.
33927
Analog Integrated Circuit Device Data
14
Freescale Semiconductor
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