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参数资料
| 型号： | PCZ33937AEK/R2 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 运动控制电子 |
| 英文描述： | AC MOTOR CONTROLLER, 0.8 A, PDSO54 |
| 封装： | 4.60 X 6.30 MM, 0.65 MM PITCH, ROHS COMPLIANT, SOIC-54 |
| 文件页数： | 22/47页 |
| 文件大小： | 749K |
| 代理商： | PCZ33937AEK/R2 |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
29
33937
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
INTRODUCTION
Figure 18. Short to Ground Detection
When switching from Low Side to High Side, the High Side
will be commanded ON after the end of the deadtime. The
deadtime period starts when the Low Side is commanded
OFF. If the voltage at Px_HS_S is less than 1.4V below VSUP
after the blanking time (tBLANK) a desaturation fault is
initiated. An additional 1.0
μs digital filter is applied from the
initiation of the desaturation fault before it is registered, and
all phase drivers are turned OFF (Px_HS_G clamped to
Px_HS_S and Px_LS_G clamped to Px_LS_S). If the
desaturation fault condition clears before the filter time
expires, the fault is ignored and the filter timer resets.
Valid faults are registered in the fault status register, which
can be retrieved by way of the SPI. Additional SPI commands
will mask the INT flag and disable output stage shutdown,
due to desaturation and phase errors. See the Logic
Commands and Registers section for details on masking INT
behavior and disabling the protective function.
Figure 19. Short to Supply Detection
Phase Comparator
Faults could also be detected as Phase Errors. A phase
error is generated if the output signal (at Px_HS_S) does not
properly reflect the drive conditions.
A phase error is detected by a Phase Comparator. The
Phase Comparator compares the voltage at the Px_HS_S
node with a reference of one half the voltage at the VSUP pin.
A High Side phase error (which will also trigger the
Desaturation Detector) occurs when the High Side FET is
commanded on, and Px_HS_S is still low at the end of the
deadtime and blanking time duration. Similarly, a LS phase
error occurs when the Low Side FET is commanded on, and
the Px_HS_S is still high at the end of the deadtime and
blanking time duration.
The Phase Error Flag is the triple OR of phase errors from
each phase. Each phase error is the OR of the High Side and
Low Side phase errors. This flag can generate an interrupt if
the appropriate mask bit is set. The INT will be held in the
High state until the fault is removed, and the appropriate bit
in the Status Register 0 is cleared by the CLINT1 command.
This fault reporting mechanism is described in detail in the
Logic Commands and Registers section.
VSUP
Phase x
Output
RSense
Phase
Return
T-Lim
VLS_CAP
Px_LS_S
Px_LS_G
Px_HS_G
Px_HS_S
Px_BOOT
Phase
Comp.
Desat.
Comp.
3x
+
-
VSUP
1.4V
Low
-Side
Driver
High
-Side
Driver
HS
Control
R
VLS
To Current
Sense Amplif.
Phase x Output
Shorted to Ground
(Low-Side
FET Shorted)
LS
Control
Px_LS_G
Px_HS_G
Deadtime
-VD
VSUP
Phase x Output
Voltage Shorted to Ground
Correct Phase x Output Voltage
0.5VSUP
PHASEx
Correct
Fault
Phase Error
tBLANK
tFILT
Desaturation Error
VSUP
Phase x
Output
RSense
Phase
Return
T-Lim
VLS_CAP
Px_LS_S
Px_LS_G
Px_HS_G
Px_HS_S
Px_BOOT
Phase
Comp.
Desat.
Comp.
3x
+
-
VSUP
1.4V
Low
-Side
Driver
High
-Side
Driver
HS
Control
R
VLS
To Current
Sense Amplif.
Phase x Output
Shorted to VSUP
(High-Side
FET Shorted)
LS
Control
Px_LS_G
Px_HS_G
Deadtime
-VD
VSUP
Phase x Output Voltage Shorted to VSUP
Correct Phase x Output Voltage
0.5VSUP
PHASEx
Correct
Fault
Phase Error
tBLANK
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相关代理商/技术参数 |
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| PCZ33999CEK | 制造商:Freescale Semiconductor 功能描述:16 LOW SIDE PWM&SPI - Rail/Tube |
| PD 1/2-0 | 制造商:TE Connectivity 功能描述:HEATSHRINK END CAP 12.7MM PK100 |
| PD 1/4-0 | 制造商:TE Connectivity 功能描述:HEATSHRINK END CAP 6.4MM PK100 制造商:TE Connectivity 功能描述:HEATSHRINK, END CAP, 6.4MM, PK100 制造商:TE Connectivity / Raychem 功能描述:HEATSHRINK, END CAP, 6.4MM, PK100; I.D. Supplied - Metric:6.4mm; I.D. Supplied - Imperial:0.251"; I.D. Recovered Max - Metric:2mm; I.D. Recovered Max - Imperial:0.078"; Shrink Ratio:3:1; Shrink Tubing / Boot Material:PO (Polyolefin);;RoHS Compliant: Yes |
| PD 1/8-0 | 制造商:TE Connectivity 功能描述:HEATSHRINK END CAP 3.2MM PK100 制造商:TE Connectivity 功能描述:HEATSHRINK, END CAP, 3.2MM, PK100 制造商:TE Connectivity 功能描述:HEATSHRINK, END CAP, 3.2MM, PK100, I.D. Supplied - Metric:3.2mm, I.D. Supplied - 制造商:TE Connectivity 功能描述:HEATSHRINK, END CAP, 3.2MM, PK100, I.D. Supplied - Metric:3.2mm, I.D. Supplied - Imperial:0.125", I.D. Recovered Max - Metric:0.58mm, I.D. Recovered Max - Imperial:0.022", Shrink Ratio:3:1, Shrink Tubing / Boot Material:PO , RoHS Compliant: Yes |
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