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| 型號(hào)： | MAX1540A |
| 廠(chǎng)商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator |
| 中文描述： | 雙路、降壓型控制器，帶有電感飽和保護(hù)、動(dòng)態(tài)輸出和線(xiàn)性穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 44/49頁(yè) |
| 文件大小： | 794K |
| 代理商： | MAX1540A |
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M
3) Group the gate-drive components (BST_ diode and
capacitor, V
DD
bypass capacitor) together near the
controller IC.
4) Make the DC-DC controller ground connections as
shown in Figures 1 and 12. This diagram can be
viewed as having two separate ground planes:
power ground, where all the high-power compo-
nents go, and an analog ground plane for sensitive
analog components. The analog ground plane and
power ground plane must meet only at a single
point directly at the IC.
5) Connect the output power planes directly to the out-
put filter capacitor positive and negative terminals
with multiple vias. Place the entire DC-DC converter
circuit as close to the load as is practical.
Chip Information
TRANSISTOR COUNT: 8612
PROCESS: BiCMOS
Dual Step-Down Controllers with Saturation
Protection, Dynamic Output, and Linear Regulator
44
______________________________________________________________________________________
Figure 19. PC Board Layout
INDUCTOR
C
OUT
C
OUT
C
IN
OUTPUT
INPUT
GROUND
INPUT
OUTPUT
C
OUT
C
IN
GROUND
INDUCTOR
HIGH-POWER LAYOUT
LOW-POWER LAYOUT
MAX1540A
BOTTOM LAYER
MAX1540A
TOP LAYER
DL
LX
DH
DUAL
N-CHANNEL
MOSFET
KELVIN-SENSE VIAS
UNDER THE SENSE RESISTOR
(REFER TO EVALUATION KIT)
SINGLE
N-CHANNEL
MOSFETS
VIA TO V
CC
PIN
VIA TO REF PIN
VIA TO REF
BYPASS CAPACITOR
VIA TO V
CC
BYPASS CAPACITOR
VIA TO POWER
GROUND
CONNECT GND
AND PGND TO THE
CONTROLLER AT
ONE POINT ONLY
AS SHOWN
CONNECT THE
EXPOSED PAD TO
ANALOG GROUND
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1540AETJ+ | 功能描述:DC/DC 開(kāi)關(guān)控制器 Dual Step-Down Ctlr w/Saturation Prot 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 |
| MAX1540AETJ+T | 功能描述:DC/DC 開(kāi)關(guān)控制器 Dual Step-Down Ctlr w/Saturation Prot 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 |
| MAX1540ETJ | 功能描述:DC/DC 開(kāi)關(guān)控制器 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 |
| MAX1540ETJ+ | 功能描述:DC/DC 開(kāi)關(guān)控制器 Dual Step-Down Ctlr 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 |
| MAX1540ETJ+T | 功能描述:DC/DC 開(kāi)關(guān)控制器 Dual Step-Down Ctlr 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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