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参数资料
| 型号： | L6382D |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20 |
| 封装： | ROHS COMPLIANT, SOP-20 |
| 文件页数： | 8/22页 |
| 文件大小： | 301K |
| 代理商： | L6382D |
Block description
L6382D
16/22
7
Block description
7.1
Supply section
●
PUVLO (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 VREF 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 VCC 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
A.
When the voltage on VCC pin reaches VccON, the IC enters the save mode where the
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 (VCC) to a value in the range
between TPR(ON) and TPR(OFF) by switching ON and OFF the PSW transistor
–
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 200mARMS.
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 VREF 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 VREF(OFF); below that it turns off and the
additional sinking circuit is enabled again.
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相关代理商/技术参数 |
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| L6382D_07 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Power management unit for microcontrolled ballast |
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| L6382D5TR | 功能描述:功率因数校正 IC Pwr management unit RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
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| L6384 | 功能描述:功率驱动器IC Hi-Volt Half Bridge RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
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