參數(shù)資料
型號: AN2528
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: Standard Space Vector Modulation TPU Function Set (svmStd)
中文描述: 空間矢量調(diào)制標(biāo)準(zhǔn)聚氨酯函數(shù)集(svmStd)
文件頁數(shù): 13/28頁
文件大小: 514K
代理商: AN2528
AN2528/D
Detailed Function Description
Standard Space Vector Modulation TPU Function Set (svmStd)
For More Information On This Product,
Go to: www.freescale.com
13
Figure 5. Effect of limitation
The
MPW
is written by the CPU. The
MPW
depends on the whole TPU unit
configuration, especially the lengths of the longest states of other functions,
and their priorities, running on the same TPU. The
MPW
has to be correctly
calculated at the time the whole TPU unit is configured.
Figure 6. Timing of the worst case
When svmStd_top and svmStd_bottom are running alone on one TPU, the
minimum pulse width can be calculated according to
Figure 6
. This illustrates
the worst case timing. The bottom channel low to high transition runs the HL
state that sets the following high to low transition. The HL state lasts 6 IMB
clock cycles (see
Table 10
). Each state is preceded by the Time Slot Transition
(TST), which takes 10 IMB clock cycles. So the time necessary to set the next
transition on the bottom channel is 16 IMB clock cycles. In addition, there is a
latency between the low to high transition and the start of the HL state. The top
channel state LH_C5, which is serviced at the time, causes the latency. The
LH_C5 state lasts 28 IMB clock cycles (see
Table 9
). Its time slot transition is
0
60
120
180
240
300
360
0
Phase C
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
Standard Space Vector Modulation Technique - limitation
1
d
Phase B
Phase A
HL
center_time
LH_C5
bottom channel
top channel
MPW
latency
DT
F
Freescale Semiconductor, Inc.
n
.
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AN25-28 制造商: 功能描述:
AN2528D 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Standard Space Vector Modulation TPU Function Set (svmStd)
AN2531 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Standard Space Vector Modulation with Dead-Time Correction ?XOR version TPU Function Set
AN2531/D 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Standard Space Vector Modulation with Dead-Time Correction ?XOR version TPU Function Set
AN2532 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Standard Space Vector Modulation ? 3 outputs version TPU Function Set (svmStd3)