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參數(shù)資料
| 型號： | L6382DTR |
| 廠商： | 意法半導體 |
| 英文描述： | Power management unit for microcontrolled ballast |
| 中文描述： | 微控鎮(zhèn)流器功率管理單元 |
| 文件頁數(shù)： | 16/22頁 |
| 文件大?。?/td> | 294K |
| 代理商： | L6382DTR |
Block description
L6382D
16/22
7
Block description
7.1
Supply section
●
μ
PUVLO (
μ
Power Under Voltage Lock Out):
This block controls the power
management of the L6382D ensuring the right current consumption in each operating
state, the correct V
REF
current capability, the driver enabling and the high-voltage start-
up generator switching.
During Start-up the device sinks the current necessary to charge the external capacitor
on pin V
CC
from the high voltage bus; in this state the other IC's functions are disabled
and the current consumption of the whole IC is less than 150
μ
A.
When the voltage on V
CC
pin reaches VccON, the IC enters the
save
mode where the
μ
PUVLO block controls Vcc between VccON and VccSM by switching ON/OFF the
high voltage start-up generator.
●
HVSU (High-Voltage Start-Up generator):
a 600V internal MOS transistor structure
controls the Vcc supply voltage during
start-up
and
save
mode conditions and it
reduces the power losses during
operating
Mode by switching OFF the MOS transistor.
The transistor has a source current capability of up to 30mA.
●
TPR (Two Point Regulator) & PWS:
during
normal
mode, the TPR block controls the
PSW switch in order to regulate the IC supply voltage (V
CC
) to a value in the range
between TPR(ON) and TPR(OFF) by switching ON and OFF the PSW transistor
Figure 10.
–
Vcc > TPRst: the PSW is switched ON immediately;
–
TPR(ON) < Vcc < TPRst: the PSW is switched ON at the following falling edge of
LGI;
–
Vcc < TPR(OFF): the PSW is switched OFF at the following falling edge on LGI.
When the PSW switch is OFF, the diodes build a charge pump structure so that, connecting
the TPR pin to a switching voltage (through a capacitor) it is possible to supply the low
voltage section of the chip without adding any further external component. The diodes and
the switch are designed to withstand a current of at least 200mA
RMS
.
7.2
3.3V reference voltage
This block is used to supply the microcontroller; this source is able to supply 10mA in
save
mode and 30mA in
operating
mode; moreover, during
start-up
when V
REF
is not yet
available, an additional circuit is ensures that, even sinking 3mA, the pin voltage doesn't
exceed 1.2V.
The reference is available until Vcc is above V
REF(OFF)
; below that it turns off and the
additional sinking circuit is enabled again.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| L6384 | 功能描述:功率驅(qū)動器IC Hi-Volt Half Bridge RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| L6384 | 制造商:STMicroelectronics 功能描述:600V HALF BRIDGE DRIVER 6384 DIP8 |
| L6384D | 功能描述:功率驅(qū)動器IC Hi-Volt Half Bridge RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| L6384D | 制造商:STMicroelectronics 功能描述:IC MOSFET DRIVER HALF BRIDGE ((NW)) |
| L6384D | 制造商:STMicroelectronics 功能描述:600V HALF BRIDGE DRIVER SMD 6384 |
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