参数资料
| 型号： | MCZ33810EK |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 22/37页 |
| 文件大小： | 0K |
| 描述： | IC IGNITION INJECTOR 32-SOIC |
| 标准包装： | 42 |
| 应用： | 自动 |
| 电流 - 电源： | 10mA |
| 电源电压： | 4.5 V ~ 36 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-BSOP（0.295"，7.50mm 宽）裸露焊盘 |
| 供应商设备封装： | 32-SOICW 裸露焊盘 |
| 包装： | 管件 |
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FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
? Max dwell time
Soft Shutdown is designed to prevent an ignition spark
while turning off the external IGBT. The Low-voltage Clamp
The Max Dwell gate turn off signal is a logically ANDed
with the Soft Shutdown bit to activate a Low-voltage Active
Clamp (See Figure 9 ).
is activated to provide the mechanism for a soft shutdown.
Table 10. Maximum Dwell Timer
GAIN SELECT BIT
The ignition coil current comparators are used to compare
the programmed NOMI and MAXI DAC value with voltage
across the external current sense resistor. When selecting a
gain of two, the ignition coil current sense resistor must be
reduced from 40m Ω to 20m Ω.
OVERLAPPING DWELL ENABLE BIT
Overlapping dwell occurs when two or more ignition mode
drivers are commanded ON at the same time. In this
condition, with the Overlapping Dwell Bit enabled the MAXI
DAC threshold value is increased as a percentage of the
nominal programmed value. The percent increase is
Spark Command
Bit<b11,b10,b9>
000
001
010
011
100
101
110
111
MAX Dwell Timer
MaxDwell (ms)
2
4
8
16
32 (default)
64
64
64
determined by bit 5 through bit 7 of the DAC Command.
Table 9. Overlapping Dwell Compensation
DAC Command Overlap Compensation
Bits<b7,b6,b5> (%)
000 0%
DAC COMMAND (DIGITAL TO ANALOG
CONVERSION COMMAND)
The DAC Command is an ignition mode command that
sets the nominal ignition coil current (NOMI) and maximum
ignition coil current (MAXI) DAC values. Bits 0 through 4 set
the NOMI threshold value and, bits 8 through 11 set the MAXI
001
010
011
100
101
110
111
7%
15%
24%
35% (default)
47%
63%
80%
threshold values. The DAC command and default values are
listed in the SPI Command Summary Table 20 . The NOMI
output is used by the MCU as a variable in dwell and spark
control algorithms.
NOMI DAC BITS
The NOMI output signal is generated by comparing the
external current sense resistor differential voltage (Resistor
Sense Positive, Resistor Sense Negative) with the SPI
programmed NOMI DAC value. When the NOMI event
MAXIMUM DWELL ENABLE BIT
Bit 8, the Maximum Dwell Enable bit allows the user to
enable the Maximum Dwell Gate Turnoff Feature. When the
Max Dwell bit is programmed as logic 0 (disabled) the device
will not perform a Low-voltage Clamp due to Max Dwell (See
MAXIMUM DWELL GATE TURN OFF FEATURE
In automotive ignition systems, dwell time is defined as the
duration of time that an ignition coil is allowed to charge. The
MC33810 starts the measure of time from the gate drive ON
command. If the dwell time is greater than the Max Dwell
Timer setting ( Table 10 ), the offending ignition gate driver is
commanded OFF. The Max Dwell Gate Turn Off Feature may
be disabled via bit 8 of the Spark Command. When the
feature is disabled, the Max Dwell fault bits are always logic
0. The Max Dwell Timer feature pertains to Ignition Mode only
and does not affect gate drivers configured as general
purpose gate drivers.
occurs, the NOMI output pin is asserted (High). The NOMI
output is only a flag to the MCU and it’s output does not affect
the gate driver.
When using a 20 m Ω resistor as the current sense resistor,
the gain select of the differential amplifier connected to RSP
and RSN, should be set to a gain of 2, via the SPI Command
Message Spark Command (Command 0100, hex 4), Control
bit 6 =1.
When using a 40m Ω resistor as the current sense resistor,
the gain select of the differential amplifier connected to RSP
and RSN, should be set to a gain of 1, via the SPI Command
Message Spark Command (Command 0100, hex 4), Control
bit 6 =0. This is also the default value.
The NOMI output provides a means to alert the MCU when
the ignition coil primary current equals the value programmed
into the NOMI DAC.
In V10 Mode, the NOMI pin is reconfigured as a MAXI
input pin from a third MC33810 device in the system. In this
mode a NOMI input has effectively the same control as an
internal MAXI signal. Further information is provided in the
V10 Mode application section of this data sheet.
33810
Analog Integrated Circuit Device Data
22
Freescale Semiconductor
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCZ33810EK/R2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Automotive Engine Control IC |
| MCZ33810EKR2 | 功能描述:马达/运动/点火控制器和驱动器 Ignition Injector Driver RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| MCZ33810R2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Automotive Engine Control IC Quad injector driver with Parallel/SPI control |
| MCZ33811EG | 功能描述:电流和电力监控器、调节器 SOLENOID MONITOR IC RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MCZ33811EGR2 | 功能描述:电流和电力监控器、调节器 SOLENOID MONITOR IC RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
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