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參數(shù)資料
| 型號： | L6591TR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO16 |
| 封裝： | ROHS COMPLIANT, SOP-16 |
| 文件頁數(shù)： | 29/32頁 |
| 文件大小： | 560K |
| 代理商： | L6591TR |
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Pin settings
L6591
6/32
Doc ID 14821 Rev 4
Pin N.
Name
Function
9Vcc
Supply voltage of both the signal part of the IC and the low-side gate driver.
The internal high voltage generator charges an electrolytic capacitor
connected between this pin and GND (#11) as long as the voltage on the
pin is below the start-up threshold of the IC, after that it is disabled and the
chip turns on. Sometimes a small bypass capacitor (0.1 F typ.) to GND
might be useful to get a clean bias voltage for the signal part of the IC. The
minimum operating voltage (UVLO) is adapted to the loading conditions of
the converter to ease burst-mode operation, during which the available
supply voltage for the IC drops.
10
LVG
Low-side gate-drive output. The driver is capable of 0.3 A min. source and
0.8 A min. sink peak current to drive the gate of the lower MOSFET of the
half-bridge leg. The pin is actively pulled to GND (#11) during UVLO.
11
GND
Chip ground. Current return for both the low-side gate-drive current and the
bias current of the IC. All of the ground connections of the bias components
should be tied to a track going to this pin and kept separate from any pulsed
current return.
12
N.C.
High-voltage spacer. The pin is not connected internally to isolate the group
of high-voltage pins and comply with safety regulations (creepage distance)
on the PCB.
13
FGND
High-side gate-drive floating ground. Current return for the high-side gate-
drive current. Layout carefully the connection of this pin to avoid too large
spikes below ground.
14
HVG
High-side floating gate-drive output. The driver is capable of 0.3 A min.
source and 0.8 A min. sink peak current to drive the gate of the upper
MOSFET of the half-bridge leg. A pull-down resistor between this pin and
pin 13 (FGND) makes sure that the gate is never floating during UVLO.
15
BOOT
High-side gate-drive floating supply voltage. The bootstrap capacitor
connected between this pin and pin 13 (FGND) is fed by an internal
synchronous bootstrap diode driven in-phase with the low-side gate-drive.
This patented structure can replace the normally used external diode.
16
HVSTART
High-voltage start-up. The pin is to be connected directly to the rectified
mains voltage. A 0.8 mA internal current source charges the capacitor
connected between pin Vcc (#9) and GND (#11) until the voltage on the Vcc
pin reaches the start-up threshold. Normally it is re-enabled when the
voltage on the Vcc pin falls below 5 V, except under latched shutdown
conditions, in which case it is re-enabled as the Vcc voltage falls 1 V below
the start-up threshold to keep the latch active.
Table 1.
Pin functions (continued)
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| L6598 | 功能描述:PMIC 解決方案 High Volt Reson Cont RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| L6598_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH VOLTAGE RESONANT CONTROLLER |
| L6598D | 功能描述:PMIC 解決方案 High Volt Reson Cont RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| L6598D013TR | 功能描述:PMIC 解決方案 High Volt Reson Cont RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| L6598D016TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:High voltage resonant controller |
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