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參數(shù)資料
| 型號： | L99H01QF |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, PQFP32 |
| 封裝： | 7 X 7 MM, ROHS COMPLIANT, LQFP-32 |
| 文件頁數(shù)： | 22/53頁 |
| 文件大?。?/td> | 1129K |
| 代理商： | L99H01QF |
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L99H01
Doc ID 15567 Rev 3
3.4
Resistive low
The resistive output mode protects the L99H01 and the H-bridge in the standby mode and in
some failure modes (internal and external thermal shutdown (TSD)), charge pump low
(CP_LOW), stucked reset (STK_RESET_Q) and power-on reset (PORES)). When a gate
driver changes into the resistive output mode due to a failure a sequence is started. In this
sequence the concerning driver is switched in sink condition for 32 s to 64 s to ensure a
fast switch-off of the H-bridge transistor. Afterwards the driver is switched in the resistive
output mode (resistive path to source).
3.5
Diagnostic functions
The diagnostic functions (over load, power supply over- and undervoltage, charge pump
low, watchdog, temperature warning and internal/external thermal shutdown) are internally
filtered and the condition has to be valid for at least 64 s (6 s for a short-circuit) before the
corresponding status bit in the status registers is set. The filters are used to improve the
noise immunity of the device. The internal temperature warning function is intended for
information purpose and is not change the state of the output drivers. On contrary, the over
load condition switches the corresponding halfbridge in sink condition. The internal thermal
shutdown condition and charge pump low disable all drivers (resistive low). The external
thermal shutdown, watchdog, over- and undervoltage condition switch all driver in sink
condition. The microcontroler needs to clear the status bits to reactivate the drivers.
3.6
Overvoltage and undervoltage detection
If the power supply voltage VS rises above the overvoltage threshold VVSOVH
(typical 20 V / 30 V), all gate driver stages are switched in sink condition to protect the
H-bridge and load. The OV bit is set. Two values for the overvoltage threshold can be
selected with the SPI. When the voltage VS drops below the undervoltage threshold
VVSUVH -VVSOVH (UV switch-off voltage), all gate driver stages are switched in sink condition
to avoid the operation of the power devices without sufficient gate driving voltage (increased
power dissipation). The UV bit is set. If the supply voltage VS recovers to normal operating
voltage the gate driver stages return to the programmed state. If the under- and overvoltage
recovery disable bit (OV_UV_RD) is set, the automatic turn-on of the drivers is deactivated.
The microcontroller needs to clear the status bits to reactivate the drivers.
3.7
Charge pump
The charge pump uses 2 external capacitors. The output of the charge pump has a current
limitation. In standby mode and after a thermal shutdown has been triggered the charge
pump is disabled. If the charge pump output voltage remains too low for longer than TCP , all
gate drivers are switched-off (resistive output, see Section 3.4). The CP_LOW bit has to be
cleared through a software reset to reactivate the gate drivers.
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參數(shù)描述 |
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| L99H01QFTR | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 MOTOR BRIDGE DRIVER 4 AUTOMOTIVE APPS 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 |
| L99H01XP | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 MOTOR BRIDGE DRIVER 4 AUTOMOTIVE APPS 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 |
| L99H01XPTR | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 MOTOR BRIDGE DRIVER 4 AUTOMOTIVE APPS 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 |
| L99LD01 | 制造商:STMicroelectronics 功能描述: |
| L99LD01TR-E | 功能描述:LED 驅(qū)動(dòng)器 IC 2 輸出 DC DC 控制器 回掃，降壓（降壓），升壓 PWM 調(diào)光 32-LQFP（7x7） 制造商:stmicroelectronics 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 類型:DC DC 控制器 拓?fù)?回掃，降壓（降壓），升壓 內(nèi)部開關(guān):無 輸出數(shù):2 電壓 - 供電（最低）:5.6V 電壓 -?供電（最高）:24V 電壓 - 輸出:- 電流 - 輸出/通道:- 頻率:100kHz ~ 500kHz 調(diào)光:PWM 應(yīng)用:汽車級 工作溫度:-40°C ~ 150°C（TJ） 安裝類型:表面貼裝 封裝/外殼:32-LQFP 供應(yīng)商器件封裝:32-LQFP（7x7） 標(biāo)準(zhǔn)包裝:1 |
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