参数资料
型号: MAX5974CETE+
厂商: Maxim Integrated Products
文件页数: 23/27页
文件大小: 0K
描述: IC REG CTRLR FLYBACK PWM 16-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
PWM 型: 电流模式
输出数: 1
频率 - 最大: 600kHz
占空比: 82%
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 16-WFQFN 裸露焊盘
包装: 管件
MAX5974A/MAX5974B/MAX5974C/MAX5974D
Active-Clamped, Spread-Spectrum,
Current-Mode PWM Controllers
V COUPLED-ON = S × S
? (V
? V OUT )
N N O
During on-time, the coupled output is:
N N C
P
where V S is the input supply voltage.
Care must be taken to ensure that the voltage at FB
(equal to V COUPLED-ON attenuated by the feedback
resistive divider) is not more than 5V:
Layout Recommendations
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 current
often form high di/dt loops. Similarly, the heatsink of the
main MOSFET presents a dV/dt source; therefore, mini-
mize the surface area of the MOSFET heatsink as much
as possible. Keep all PCB traces carrying switching cur-
rents as short as possible to minimize current loops. Use
a ground plane for best results.
V FB-ON = V COUPLED-ON ×
( R FB1 + R FB2 )
R FB2
< 5V
For universal AC input design, follow all applicable
safety regulations. Offline power supplies can require
UL, VDE, and other similar agency approvals.
If this condition is not met, a signal diode should be
placed from GND (anode) to FB (cathode).
Maxim Integrated
Refer to the MAX5974A and MAX5974C Evaluation Kit
data sheets for recommended layout and component
values.
23
相关PDF资料
PDF描述
MAX669EUB/V+T IC REG CTRLR PWM HYBRID 10-UMAX
MAX669EUB+T IC REG CTRLR PWM HYBRID 10-UMAX
MAX668EUB+T IC REG CTRLR PWM HYBRID 10-UMAX
MAX1960EEP+T IC REG CTRLR BUCK PWM VM 20-QSOP
ISL88013IH522Z-TK IC VOLTAGE MONITOR DUAL SOT23-5
相关代理商/技术参数
参数描述
MAX5974CETE+ 功能描述:电流型 PWM 控制器 Current-Mode PWM Controller 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
MAX5974CETE+T 功能描述:电流型 PWM 控制器 Current-Mode PWM Controller 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
MAX5974CEVKIT 功能描述:电流型 PWM 控制器 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
MAX5974CEVKIT# 功能描述:电流型 PWM 控制器 MAX5974C Eval Kit 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
MAX5974DETE+ 功能描述:电流型 PWM 控制器 Current-Mode PWM Controller 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