- 您现在的位置：买卖IC网 > PDF目录17281 > MAX5090EVKIT (Maxim Integrated Products)EVAL KIT FOR MAX5090 PDF资料下载
参数资料
| 型号： | MAX5090EVKIT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/17页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX5090 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 5V |
| 电流 - 输出： | 2A |
| 输入电压： | 7.5 ~ 76 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 125kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX5090 |
2A, 76V, High-Efficiency MAXPower Step-Down
DC-DC Converters
? V OQ =
In a dynamic load application, the allowable deviation
of the output voltage during the fast transient load dic-
tates the output capacitance value and the ESR. The
output capacitors supply the step-load current until the
controller responds with a greater duty cycle. The
response time (t RESPONSE ) depends on the closed-
loop bandwidth of the converter. The resistive drop
across the capacitor ESR and capacitor discharge
cause a voltage droop during a step-load. Use a com-
bination of low-ESR tantalum and ceramic capacitors
for better transient load and ripple/noise performance.
Use the following equations to calculate the deviation of
output voltage due to the ESR and capacitance value
of the output capacitor:
? V OESR = I STEP x ESR OUT
I STEP x t RESPONSE
C OUT
where I STEP is the load step and t RESPONSE is the
response time of the controller. Controller response
time is approximately one-third of the reciprocal of the
closed-loop unity-gain bandwidth, 20kHz typically.
Board Layout Guidelines
1) Minimize ground noise by connecting the anode of
the Schottky rectifier, the input bypass capacitor
ground lead, and the output filter capacitor ground
lead to a large PGND plane.
2) Minimize lead lengths to reduce stray capacitance,
trace resistance, and radiated noise. In particular,
place the Schottky rectifier diode right next to the
device. Also, place the BST and VD bypass capaci-
tors very close to the device.
3) Connect the exposed pad of the IC to the SGND
plane. Do not make a direct connection between the
exposed pad plane and SGND (pin 7) under the IC.
Connect the exposed pad and pin 7 to the SGND
plane separately. Connect the ground connection of
the feedback resistive divider, ON/ OFF threshold
resistive divider, and the soft-start capacitor to the
SGND plane. Connect the SGND plane and PGND
plane at one point near the input bypass capacitor
at V IN .
4) Use large SGND plane as a heatsink for the
MAX5090. Use large PGND and LX planes as
heatsinks for the rectifier diode and the inductor.
______________________________________________________________________________________
13
相关PDF资料 |
PDF描述 |
|---|---|
| AIRD-06-270K | INDUCTOR 27UH 5.5A 10% |
| RMC07DRAN | CONN EDGECARD 14POS R/A .100 SLD |
| ASPI-0403S-100M-T | INDUCTOR POWER 10UH 20% SMD |
| RSC07DRAH | CONN EDGECARD 14POS R/A .100 SLD |
| AIRD-06-220K | INDUCTOR 22UH 7.2A 10% |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5091 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:28V, 100mA, Low-Quiescent-Current LDO with Reset and Power-Fail Input/Output |
| MAX5091AASA+ | 功能描述:低压差稳压器 - LDO 28V 100mA Low-Q LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX5091AASA+T | 功能描述:低压差稳压器 - LDO 28V 100mA Low-Q LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX5091AATA+ | 制造商:Maxim Integrated Products 功能描述:28V, 100MA, LOW-QUIESCENT-CURRENT LDO WITH RESET AND POWER-F - Rail/Tube |
| MAX5091AATA+T | 功能描述:低压差稳压器 - LDO 28V 100mA Low-Q LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
发布紧急采购，3分钟左右您将得到回复。