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參數(shù)資料
| 型號(hào)： | MAX5038EAI25 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | Circular Connector; No. of Contacts:10; Series:MS27473; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:12; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:12-98 RoHS Compliant: No |
| 中文描述： | SWITCHING CONTROLLER, 525 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | 5.30 MM, MO150, SSOP-28 |
| 文件頁(yè)數(shù)： | 25/26頁(yè) |
| 文件大?。?/td> | 406K |
| 代理商： | MAX5038EAI25 |
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M
Dual-Phase, Parallelable, Average Current-Mode
Controllers
______________________________________________________________________________________
25
Use the following equations to calculate C
CF
and C
CFF
:
PC Board Layout
Use the following guidelines to layout the switching
voltage regulator.
1) Place the V
IN
and V
CC
bypass capacitors close to
the MAX5038/MAX5041.
2) Minimize the high-current loops from the input
capacitor, upper switching MOSFET, inductor, and
output capacitor back to the input capacitor nega-
tive terminal.
3) Keep short the current loop from the lower switch-
ing MOSFET, inductor, and output capacitor and
return to the source of the lower MOSFET.
4) Place the Schottky diodes close to the lower
MOSFETs and on the same side of the PC board.
5) Keep the SGND and PGND isolated and connect
them at one single point close to the negative termi-
nal of the input filter capacitor.
6) Run the current-sense lines CS+ and CS- very
close to each other to minimize the loop area.
Similarly, run the remote voltage sense lines
SENSE+ and SENSE- close to each other. Do not
cross these critical signal lines through power cir-
cuitry. Sense the current right at the pads of cur-
rent-sense resistors.
7) Avoid long traces between the V
CC
bypass capaci-
tors, driver output of the MAX5038/MAX5041,
MOSFET gates and PGND pin. Minimize the loop
formed by the V
CC
bypass capacitors, bootstrap
diode, bootstrap capacitor, MAX5038/MAX5041,
and upper MOSFET gate.
8) Place the bank of output capacitors close to the load.
9) Distribute the power components evenly across the
board for proper heat dissipation.
10) Provide enough copper area at and around the
switching MOSFETs, inductor, and sense resistors
to aid in thermal dissipation.
11) Use at least 4oz copper to keep the trace induc-
tance and resistance to a minimum. Thin copper PC
boards can compromise efficiency since high cur-
rents are involved in the application. Also, thicker
copper conducts heat more effectively, thereby
reducing thermal impedance.
Chip Information
TRANSISTOR COUNT: 5431
PROCESS: BiCMOS
C
f
P
R
CFF
CF
=
×
×
×
1
2
π
C
f
R
CF
Z
CF
=
×
×
×
1
2
π
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CLKIN
CLKOUT
BST2
DH2
LX2
DL2
EN
PGND
IN
V
CC
DL1
LX1
DH1
BST1
CSN1
CSP1
EAOUT
EAN
DIFF
SENSE-
SENSE+
CLP1
SGND
CLP2
PLLCMP
PHASE
CSN2
CSP2
SSOP
TOP VIEW
MAX5038A
MAX5041A
Pin Configuration
(30)
(31)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5038EAI25+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX5038EAI25-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 |
| MAX5038EAI33 | 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 |
| MAX5038EAI33+ | 功能描述:電流型 PWM 控制器 Dual-Phase Parallelable Average 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 |
| MAX5038EAI33+T | 功能描述:電流型 PWM 控制器 Dual-Phase Parallelable Average 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 |
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