- 您现在的位置：买卖IC网 > PDF目录15487 > MAX15034BAUI+ (Maxim Integrated Products)IC REG CTRLR BUCK PWM 28TSSOP-EP PDF资料下载
参数资料
| 型号： | MAX15034BAUI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 24/26页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 28TSSOP-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| PWM 型： | 电流模式 |
| 输出数： | 1 或 2 |
| 频率 - 最大： | 1MHz |
| 电源电压： | 4.75 V ~ 5.5 V，5 V ~ 28 V |
| 降压： | 是 |
| 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： | -40°C ~ 125°C |
| 封装/外壳： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 包装： | 管件 |
Configurable, Single-/Dual-Output, Synchronous
Buck Controller for High-Current Applications
< f C < SW
In practical applications, pick the crossover frequency
(f C ) in the range of:
f SW f
10 2
First calculate R CF in equation 2 above. Calculate C CF
so that:
especially true for dual-phase converters where one
channel can affect the other. Use the following guide-
lines for PCB layout:
1) Place the V DD , REG, and the BST1 and BST2 bypass
capacitors close to the MAX15034.
2) Minimize all high-current switching loops.
C CF =
10
2 × π × f C × R CF
3) Keep the power traces and load connections short.
This practice is essential for high efficiency. Use
thick copper PCBs (2oz or higher) to enhance effi-
where C CF is C10 and C12 in Figure 6.
Calculate C CFF so that:
ciency and minimize trace inductance and resis-
tance.
4) Run the current-sense lines CSP_ and CSN_ very
close to each other to minimize loop areas. Do not
C CFF =
1
2 × π × f C × 10 × R CF
cross these critical signal lines through power cir-
cuitry. Sense the current right at the pads of the
current-sense resistors.
where C CFF is C11 and C13 in Figure 6.
Applications Information
Independent Turn-On and Turn-Off
The MAX15034 can be used to regulate two outputs
from one controller. Each of the two outputs can be
turned on and off independently of one another by con-
trolling the enable input of each phase (EN1 and EN2).
A logic-low on each enable pin shuts down the
MOSFET drivers for that phase. When the voltage on the
enable pin exceeds 1.2V, the drivers are turned on and
the output can come up to regulation. This method of
turning on the outputs allows the MAX15034 to be used
for power sequencing.
PCB Layout Guidelines
Careful PCB layout is critical to achieve low losses, low
output noise, and clean and stable operation. This is
5) Place the bank of output capacitors close to the
load.
6) Isolate the power components on the top side from
the analog components on the bottom side with a
ground plane in between.
7) Provide enough copper area around the switching
MOSFETs, inductors, and sense resistors to aid in
thermal dissipation and reducing resistance.
8) Distribute the power components evenly across the
top side for proper heat dissipation.
9) Keep AGND and PGND isolated and connect them
at one single point close to the IC. Do not connect
them together anywhere else.
10) Place all input bypass capacitors for each input as
close to each other as is practical.
24
______________________________________________________________________________________
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1631AEAI+ | IC REG CTRLR BUCK PWM CM 28-SSOP |
| MAX1634EAI+ | IC REG CTRLR BUCK PWM CM 28-SSOP |
| MAX15003ATM+ | IC REG CTRLR BUCK PWM 48TQFN-EP |
| MAX5060ETI+ | IC REG CTRLR BUCK PWM CM 28-TQFN |
| MAX1541ETL+ | IC REG CTRLR DIVIDER PWM 40-TQFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX15034BAUI+ | 功能描述:DC/DC 开关控制器 Configurable Synchronous Buck 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 |
| MAX15034BAUI+T | 功能描述:DC/DC 开关控制器 Configurable Synchronous Buck 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 |
| MAX15034BEVKIT+ | 功能描述:电源管理IC开发工具 MAX15034B Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX15035ETL+ | 功能描述:电压模式 PWM 控制器 15A Step-Down Reg w/Internal Switch RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX15035ETL+T | 功能描述:电压模式 PWM 控制器 15A Step-Down Reg w/Internal Switch RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。