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參數(shù)資料
| 型號： | L6788ATR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 電源管理 |
| 英文描述： | 3-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40 |
| 封裝： | 6 X 6 MM, 1 MM HEIGHT, ROHS COMPLIANT, VFQFN-40 |
| 文件頁數(shù)： | 16/18頁 |
| 文件大?。?/td> | 330K |
| 代理商： | L6788ATR |
L6788A
Pins description and connection diagram
Doc ID 15341 Rev 2
7/18
16
CS2+
Channel 2 current sense positive input.
Connect through an R-C filter to the phase-side of the channel 2 inductor.
Short to VOUT when using 1-Phase operation.
17
CS3-
Channel 3 current sense negative input.
Connect through a Rg resistor to the output-side of the channel 3 inductor.
Still connect to VOUT through Rg resistor when using 1 or 2-phase operation.
18
CS3+
Channel 3 current sense positive input.
Connect through an R-C filter to the phase-side of the channel 3 inductor.
Short to VOUT when using 1 or 2-phase operation.
19
FBRTN
Feedback return.
This pin is the ground return for remote sensing the output voltage.
Connect directly to the point where the output voltage is to be regulated.
20
FB
Error amplifier inverting input pin.
Connect with a resistor RFB vs. VSEN and with an RF - CF//CP vs. COMP pin.
See reference schematic for more details.
A current proportional to the load current can be sourced (in according to
RT/DROOP pin status) from this pin in order to implement the droop effect.
See “droop function” section for details.
21
COMP
Error amplifier output. Connect with an RF - CF//CP vs. FB pin.
22
AGND
Signal ground pin. All the internal references are referred to this pin.
Connect it to the PCB signal ground (AGND).
23
VSEN
Output voltage monitor, manages OVP/UVP protections.
Connect to the positive side of the load to perform remote sense.
See “output voltage protections” section for more details.
24
RT/
DROOP
Operation frequency setting.
Internally fixed at 1.240 V it allows programming the switching frequency FSW
of each channel.
Frequency is programmed according to the Rosc resistor connected from the
pin vs. AGND with again of 9 kHz/A. Leaving the pin floating programs a
switching frequency of 200 kHz per phase.
The device uses this pin also to enable/disable the droop function.
See “droop function“ section for details.
25
IOUT/OCP
Output current indication and over current protection setting.
The device sources from this pin a current proportional to the load current
[(DCR/Rg)*IOUT)].
Connect a resistor from this pin to AGND to program the over current
protection level.
This pin is also used as output current indication. Voltage measured at this pin
is proportional to the output current. External NTC can be used for
temperature compensation of OCP and IOUT readings. See “over current
protection “section for details.
Table 2.
Pin description (continued)
Pin n°
Name
Description
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6788A | 3-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40 |
| L6910A | 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| L6910GTR | 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| L6917BD | SWITCHING CONTROLLER, 600 kHz SWITCHING FREQ-MAX, PDSO28 |
| L6917BDTR | SWITCHING CONTROLLER, 600 kHz SWITCHING FREQ-MAX, PDSO28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L67A/W | 制造商:Electro-Mech 功能描述: |
| L67G-FG | 制造商:Electro-Mech 功能描述: |
| L67O | 制造商:Electro-Mech 功能描述: |
| L67R-FG | 制造商:Electro-Mech 功能描述: |
| L67-TB | 制造商:Thomas & Betts 功能描述:Fittings Elbow 2inch Iron |
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