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参数资料
| 型号： | MAX1937EEI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/24页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR PWM HYBRID 28-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| PWM 型： | 混合物 |
| 输出数： | 1 |
| 频率 - 最大： | 500kHz |
| 占空比： | 50% |
| 电源电压： | 6 V ~ 24 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 85°C |
| 封装/外壳： | 28-QSOP |
| 包装： | 管件 |
Two-Phase Desktop CPU Core Supply
Controllers with Controlled VID Change
V IN
INPUT: 8V TO 14V
6 × 10 μ F CERAMIC CAPACITORS
IN
OUT
2.2 μ F
AND 2 × 100 μ F OS-CON
2
IR: 2 × IRLR7811W
OUTPUT
0.8V TO 1.55V
U2
KA78M06
1
GND
2
C2
2.2 μ F
3
D1
1 2
CENTRAL
C1 CMHD4448
C3
2.2 μ F
VID0
VID1
R1
10 Ω
VDD
C VDD
0.01 μ F
28
8
1
2
V CC
V DD
VID0
VID1
DH1
LX1
BST1
DL1
26
25
27
23
C VLG
1 μ F
N3
1
C BST1
0.22 μ F N3
1
TAIYO YUDEN TMK432BJ106MM
C IN
SANYO 16SP100M
N1
3
L1
0.66 μ H
SUMIDA CDEP134-6
2
FAIRCHILD
2 × ISL9N303AS3ST 46A
3
V OUT
VID2
4
VID2
CS1
24
2
1m Ω
VID3
5
VID3
U1
VLG
22
3
D2
CENTRAL CMPSH-3A
R CS1
VID4
EN
C VPOS
47pF
C REF
0.47 μ F
R4
68k Ω
R TIME
120k Ω
R VPOS
51.1k Ω
R3
200k Ω
6
13
3
7
12
9
10
VID4
EN
TIME
VPOS
REF
ILIM
GND
MAX1937
PGND
CS2
DL2
BST2
LX2
DH2
BF
21
19
20
16
18
17
14
1
1
C BST2
0.22 μ F N4
1
N2
FB
R6
10k Ω
1m Ω
R CS2
3
FAIRCHILD
2 × ISL9N303AS3ST L2
2 0.66 μ H
SUMIDA CDEP134-6
3 IR: 2 × 1RLR7811W
V IN
2
GNDS
R5
10k Ω
11
GNDS
PWRGD
13
VDD
R2
100k Ω
6 × 390 μ F SP-CAP
PANASONIC EEFUE0D391XR
AND 4 × 1 μ F CERAMIC CAPACITORS
TAIYO YUDEN LMK212BJ105MG
C OUT
PWRGD
Figure 1. MAX1937 Application Circuit
connect a capacitor (C VLG ) from VLG to PGND. Place
this capacitor as close as possible to the VLG pin.
The MAX1937/MAX1938/MAX1939 also require an exter-
nal 5V supply connected to V DD . A diode with a forward
voltage drop of about 1V (D1) is used to stepdown the
6V supply to power the IC, as shown in Figure 1. The
diode connects between the linear regulator output and
the RC filter used to filter the voltage at V DD (R1, C VDD ,
and C3). In the PC board layout, place C VDD as close as
possible to the V DD pin.
High-Side Gate-Drive Supply (BST_)
The drive voltage for the high-side MOSFETs is gener-
ated using a bootstrap circuit. The capacitor, C BST_ ,
should be sized properly to minimize the ripple voltage
for switching. The ripple voltage should be less than
200mV. For more information on selecting capacitors
for the BST circuit, see the Selecting a BST Capacitor
section. To minimize the forward voltage drop across
the bootstrap diodes (D2), use Schottky diodes. The
recommended value for the boost capacitors (C BST_ ) is
0.22μF.
______________________________________________________________________________________
15
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1937EEI+ | 功能描述:DC/DC 开关控制器 2-Phase Desktop CPU Core Supply Ctlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1937EEI+T | 功能描述:DC/DC 开关控制器 2-Phase Desktop CPU Core Supply Ctlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1937EEI-T | 功能描述:开关变换器、稳压器与控制器 RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MAX1937EEI-TG069 | 制造商:Maxim Integrated Products 功能描述: |
| MAX1938EEI | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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