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參數(shù)資料
| 型號(hào)： | MCZ33927EK |
| 廠商： | 飛思卡爾半導(dǎo)體(中國(guó))有限公司 |
| 英文描述： | Transistor; Type: Amplifiers/Bipolar; VCEO (V): -100; Ic (A): -1; Pc (W): 0.9; hFE: 140 to 350; VCE (sat) (V) max: -0.5; Package: TO-92Mod |
| 中文描述： | 三相場(chǎng)效應(yīng)晶體管預(yù)驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 27/44頁(yè) |
| 文件大?。?/td> | 490K |
| 代理商： | MCZ33927EK |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
27
33927
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
INTRODUCTION
Figure 14. Short to Battery 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 VBAT 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.
HOLD OFF CIRCUIT
The IC guarantees the output FETs are turned off in the
absence of V
DD
or V
PWR
by means of the Hold off circuit. A
small current source, generated from VBAT, typically 100 μA,
is mirrored and pulls all the output gate drive pins low when
V
DD
is less than about 3.0V,
RST
is active (low), or when VLS
is lower than the VLS_Disable threshold.
CHARGE PUMP
The Charge Pump circuit provides the basic switching
elements required to implement a charge pump when
combined with external capacitors and diodes for enhanced
low voltage operation.
When the 33927 is connected per the typical application
using the charge pump (see
Figure 17
), the regulation path
for VLS includes the charge pump and a linear regulator. The
regulation set point for the linear regulator is nominally at
15.34V. As long as VLS output voltage (VLS
OUT
) is greater
than the VLS analog regulator threshold (VLS
ATH
) minus
V
THREG
, the charge pump is not active.
If VLS
OUT
< VLS
ATH
– V
THREG
the charge pump turns ON
until VLS
OUT
> VLS
ATH
– V
THREG
+ V
HYST
V
HYST
is approximately 200mV. VLS
ATH
will not interfere
with this cycle even when there is overlap in the thresholds
due to the design of the regulator system.
The maximum current the charge pump can supply is
dependent on the pump capacitor value and quality, the
pump frequency (nominally 130kHz) and the Rdson of the
pump FETs. The effective charge voltage for the pump
capacitor would be V
BAT
– 2*V
DIODE
. The total charge
transfer would then be C
PUMP
* (V
BAT
– 2*V
DIODE
).
Multiplying by the switch frequency gives the theoretical
current the pump can transfer: F
PUMP
* C
PUMP
* (V
BAT
–
2*V
DIODE
).
NOTE: There is also another smaller, fully integrated
charge pump (Trickle Charge Pump - see
Figure 2
), which is
used to maintain the high-side drivers’ gate V
GS
in 100
percent duty cycle modes.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCZ33927EK/R2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Three-Phase Field Effect Transistor Pre-Driver |
| MCZ33927EKR2 | 功能描述:功率驅(qū)動(dòng)器IC THREE PHASE PRE- DRIVER RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MCZ33927R2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Three-Phase Field Effect Transistor Pre-Driver |
| MCZ33937AEK | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 3 Phase Pre-Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| MCZ33937AEK/R2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Three Phase Field Effect Transistor Pre-driver |
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