參數(shù)資料
型號(hào)： NCP4331DR2G
廠商： ON SEMICONDUCTOR
元件分類： 穩(wěn)壓器
英文描述： Synchronous Buck Controller for High Efficiency Post Regulation
中文描述： SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, PDSO16
封裝： LEAD FREE, SOIC-16
文件頁(yè)數(shù)： 19/23頁(yè)
文件大?。?/td> 195K
代理商： NCP4331DR2G
NCP4331
http://onsemi.com
19
L
LOAD2
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
+
Regulation
Block
LOAD1
HS_ DRV
VCC
VDD
LS_ DRV
GND
SYNC
BST
HB
SS
FB
Cramp
COMP
UVP
FB
VIN_FORWARD
Forward
Driver
(e.g.
NCP1280)
V
in
R
u
R
u
R
sync
V
out2
R
S
(Coil Series
Resistor)
V
out1
+
Figure 27. Post-Regulation with CCCV Protection
CSin+
CSin-
CSout
C1
R1
R2
V
out1
R
th0
CSin+
FB
CSin+
CSin-
VCC
CSin-
In Figure 27, the series resistor R
S
of the inductor senses the coil current. Practically if the resistors R
1
and R
2
are equal and
if R
th0
is high compared to them, the inductor voltage is integrated by the auxiliary OPAMP. Since the average voltage across
the pure inductive part of the coil is zero in steady state, this sensing technique actually returns the averaged voltage across
the series resistor R
S
(”V
RS
”). V
RS
is compared to an offset created using the main output voltage (“V
out1
”) together with of
the R2 and Rth0 resistors (more specifically, this offset is [(R2/(R2 + R
th0
))
V
out1
]). Finally, the coil maximum current is given
by: (I
coil
)max = (R2/(R2 + R
th0
))
V
out1
/R
S
). Any accurate voltage source could be used instead of V
out1
. This technique that
limits the coil current as a function of the main output V
out1
, further performs some soft-start function and helps V
out2
track
V
out1
.
相關(guān)PDF資料
PDF描述
NCP4331 Synchronous Buck Controller for High Efficiency Post Regulation
NCP4420 6A High-Speed MOSFET Drivers
NCP4429 6A High-Speed MOSFET Drivers
NCP4423 3A Dual High-Speed MOSFET Drivers
NCP4894FCT1 1.8 Watt Differential Audio Power Amplifier with Selectable Shutdown
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NCP433FCT2G 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:1.5A Ultra-Small Controlled Load Switch with Auto-Discharge Path
NCP434 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:2A Ultra-Small Controlled Load Switch with
NCP434FCT2G 制造商:ON Semiconductor 功能描述:2A LOAD SWITCH WITH DISCH - Tape and Reel 制造商:ON Semiconductor 功能描述:REEL / 2A LOAD SWITCH WITH DISCH
NCP435 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:2A Ultra-Small Controlled Load Switch with
NCP4350DR2G 功能描述:IC SUPERVISOR DESKTOP PS 16-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:簡(jiǎn)單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:推挽式，圖騰柱 復(fù)位:低有效 復(fù)位超時(shí):最小 145 ms 電壓 - 閥值:2.64V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:16-TQFN-EP（4x4） 包裝:帶卷 (TR)
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*