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参数资料
| 型号： | MAX5069AEVKIT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 16/19页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX5069A |
| 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，隔离 |
| 输出电压： | 12V |
| 电流 - 输出： | 10A |
| 输入电压： | 36 ~ 72V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 500kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX5069A |
High-Frequency, Current-Mode PWM Controller
with Accurate Oscillator and Dual FET Drivers
Current Limit
The current-sense resistor (R CS ), connected between
the source of the MOSFET and ground, sets the current
limit. The CS input has a voltage trip level (V CS ) of
314mV. Use the following equation to calculate the
value of R CS :
Applications Information
Layout Recommendations
Keep all PC board traces carrying switching currents
as short as possible, and minimize current loops.
For universal AC input design, follow all applicable safe-
ty regulations. Offline power supplies may require UL,
R CS =
V CS
I PRI
VDE, and other similar agency approvals. Contact these
agencies for the latest layout and component rules.
where I PRI is the peak current in the primary that flows
through the MOSFET at full load.
When the voltage produced by this current (through the
current-sense resistor) exceeds the current-limit com-
parator threshold, the MOSFET drivers (NDRVA/
NDRVB) quickly terminate the current on-cycle. In most
cases, a small RC filter is required to filter out the lead-
ing-edge spike on the sense waveform. Set the corner
Typically, there are two sources of noise emission in a
switching power supply: high di/dt loops and high dV/dt
surfaces. For example, traces that carry the drain cur-
rent often form high di/dt loops. Similarly, the heatsink of
the MOSFET presents a dV/dt source, thus minimize the
surface area of the heatsink as much as possible.
To achieve best performance and to avoid ground
loops, use a solid ground-plane connection.
frequency to a few MHz above the switching frequency.
Selector Guide
PART
MAX5069A
MAX5069B
MAX5069C
MAX5069D
BOOTSTRAP
UVLO
Yes
Yes
No
No
STARTUP
VOLTAGE (V)
23.6
23.6
10.8
10.8
PROGRAMMABLE
UVLO
HYSTERESIS
No
Yes
Yes
No
OSCILLATOR SYNC
Yes
No
No
Yes
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5069B | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers |
| MAX5069BAUE | 功能描述:电流型 PWM 控制器 High-Frequency Current-Mode PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX5069BAUE+ | 功能描述:电流型 PWM 控制器 High-Frequency Current-Mode PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX5069BAUE+T | 功能描述:电流型 PWM 控制器 High-Frequency Current-Mode PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX5069BAUE-T | 功能描述:电流型 PWM 控制器 High-Frequency Current-Mode PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
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