參數(shù)資料
型號(hào): MAX1887
廠商: Maxim Integrated Products, Inc.
英文描述: Quick-PWM Slave Controllers for Multiphase, Step-Down
中文描述: Quick-PWM從控制器,用于多相、降壓型電源
文件頁(yè)數(shù): 14/33頁(yè)
文件大小: 1018K
代理商: MAX1887
M
Quick-PWM Slave Controllers for
Multiphase, Step-Down Supplies
14
______________________________________________________________________________________
number of phases (1/
η
) when compared to a single-
phase converter. This significantly reduces the I
2
R loss-
es across the inductor
s series resistance, the
MOSFETs on-resistance, and the board resistance.
In-Phase and Out-of-Phase Operation
Multiphase systems can stagger the on times of each
phase (out-of-phase operation) or simultaneously turn on
all phases at the beginning of a new cycle (in-phase
operation). When configured for out-of-phase operation,
high input-to-output differential voltages (V
IN
>
η
V
OUT
)
MAX1887
(MAX1897)*
Q
TRIG
TOFF
ONE-SHOT
R
S
Q
Q
Q
TRIG
EDGE
DETECTOR
Q
TRIG
TON
ONE-SHOT
CONTROLLER
BIAS
ON-TIME
COMPUTE
POSITIVE
CS LIMIT
NEGATIVE
CS LIMIT
17R
2R
R
POSITIVE
CM LIMIT
(V
CC
)*
(TON)*
V+
COMP
CS-
CS+
CM+
CM-
GMS
GMM
LIMIT
(SHDN)*
BST
DH
LX
DL
PGND
TRIG
(POL)*
ILIM
GND
V
DD
Figure 2. Functional Diagram
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1887EEE 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX1887EEE+ 功能描述:電流型 PWM 控制器 CDMA Cellular/PCS System Power Supplies RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX1887EEE+T 功能描述:電流型 PWM 控制器 CDMA Cellular/PCS System Power Supplies RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX1887EEE-T 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX1888EUA 功能描述:其他電源管理 RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel