參數(shù)資料
型號(hào)： L6918D
廠商： 意法半導(dǎo)體
英文描述： 5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER
中文描述： 5位可編程多相控制器
文件頁(yè)數(shù)： 4/35頁(yè)
文件大?。?/td> 760K
代理商： L6918D
L6918 L6918A
4/35
13
ISEN1
Channel 1 current sense pin. The output current may be sensed across a sense resistor or
across the low-side mosfet RdsON. This pin has to be connected to the low-side mosfet drain
or to the sense resistor through a resistor Rg in order to program the current intervention for
each phase at 140% as follow:
35
μ
A R
g
--------------------------
=
Where 35
μ
A is the current offset information relative to the Over Current condition (offset at
OC threshold minus offset at zero load).The net connecting the pin to the sense point must be
routed as close as possible to the PGNDS1 net in order to couple in common mode any
picked-up noise.
Channel 1 Power Ground sense pin. The net connecting the pin to the sense point must be routed as
close as possible to the ISEN1 net in order to couple in common mode any picked-up noise.
Channel 2 Power Ground sense pin. The net connecting the pin to the sense point must be
routed as close as possible to the ISEN2 net in order to couple in common mode any picked-
up noise.
Channel 2 current sense pin. The output current may be sensed across a sense resistor or
across the low-side mosfet Rds
ON.
This pin has to be connected to the low-side mosfet drain
or to the sense resistor through a resistor Rg in order to program the current intervention for
each phase at 140% as follow:
35
μ
A R
g
--------------------------
=
14
PGNDS1
15
PGNDS2
16
ISEN2
Where 35
μ
A is the current offset information relative to the Over Current condition (offset at
OC threshold minus offset at zero load).
The net connecting the pin to the sense point must be routed as close as possible to the
PGNDS2 net in order to couple in common mode any picked-up noise.
Oscillator switching frequency pin. Connecting an external resistor from this pin to GND, the
external frequency is increased according to the equation:
17
OSC/INH
FAULT
Connecting a resistor from this pin to Vcc (12V), the switching frequency is reduced according
to the equation:
If the pin is not connected, the switching frequency is 300KHz.
Forcing the pin to a voltage lower than 0.8V, the device stop operation and enter the inhibit
state; all mosfets are turned OFF.
Voltage Identification pins. These input are internally pulled-up and TTL compatible. They are
used to program the output voltage as specified in Table 1 and to set the over voltage and
power good thresholds.
Connect to GND to program a ‘0’ while leave floating to program a ‘1’.
This pin is an open collector output and is pulled low if the output voltage is not within the
above specified thresholds. It must be connected with the Slave’s PGOOD pin.
If not used may be left floating.
Channel 2 bootstrap capacitor pin. This pin supplies the high side driver. Connect through a
capacitor to the PHASE2 pin and through a diode to Vcc (cathode vs. boot).
Channel 2 high side gate driver output.
This pin is connected to the source of the upper mosfet and provides the return path for the
high side driver of channel 2.
Channel 2 low side gate driver output.
Power ground pin. This pin is common to both sections and it must be connected through the closest
path to the low side mosfets source pins in order to reduce the noise injection into the device.
18
to
22
VID0-4
23
PGOOD
24
BOOT2
25
26
UGATE2
PHASE2
27
28
LGATE2
PGND
L6918A (MASTER) PIN FUNCTION
(continued)
N.
Name
Description
I
OCPx
sense
I
OCPx
sense
f
S
300KHz
6
OSC
)
-----------------------------
+
=
f
S
300KHz
7
OSC
)
-----------------------------
+
=
相關(guān)PDF資料
PDF描述
L6918DTR 5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER
L6919C 5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT
L6919CD 5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT
L6919CDTR CAP 20PF 50V 5% C0G SMD-0805 TR-7-PL SN100
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6918DTR 功能描述:DC/DC 開(kāi)關(guān)控制器 Prog Multi-Phase Cnt RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
L6919 制造商:未知廠家 制造商全稱:未知廠家 功能描述:5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT
L6919C 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT
L6919CD 功能描述:DC/DC 開(kāi)關(guān)控制器 Prog Dual-Phase Cont RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
L6919CDTR 功能描述:DC/DC 開(kāi)關(guān)控制器 Prog Dual-Phase Cont RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
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