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| 型号： | MAX5058EVKIT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/25页 |
| 文件大小： | 0K |
| 描述： | IC DRVR SYNC RECT 28-TSSOP |
| 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： | 3.3V |
| 电流 - 输出： | 15A |
| 输入电压： | ±36 V ~ 72 V |
| 稳压器拓扑结构： | 正向转换器 |
| 频率 - 开关： | 250kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX5058 |
Parallelable Secondary-Side Synchronous Rectifier
Driver and Feedback-Generator Controller ICs
The MOSFET drivers are synchronized to the primary-
side switching by using the BUFIN input. BUFIN
accepts the PWM information from the primary through
a high-speed optocoupler or through a small isolation
pulse transformer. Figures 2 through 6 show the inter-
face details using an optocoupler or a pulse trans-
former with two different kinds of primary-side PWM
controllers.
For proper operation, the MAX5051, MAX5042, and
MAX5043 devices generate a look-ahead signal that
precedes the actual switching of the primary MOSFETs
by a small amount of time, typically less than 100ns.
Additional circuitry may be required when the
MAX5058/MAX5059 are used with other primary-side
controllers not capable of providing a look-ahead signal.
MAX5042
MAX5043
REG5
When BUFIN goes high, QREC goes high and QSYNC
goes low. When BUFIN goes low, QREC goes low and
QSYNC goes high.
The MAX5058/MAX5059 provide improved efficiency at
light loads by allowing discontinuous conduction oper-
ation. A zero-crossing comparator with inputs ZCP and
ZCN monitors the current through the freewheeling
MOSFET using a sense resistor at its source. The free-
wheeling MOSFET is turned off when the inductor cur-
rent is near zero. The actual threshold can be externally
adjusted. The Typical Application Circuit shows one
method for trip-point adjustment using components
R31 and R34.
BUFIN is internally clamped to 4V. Use a voltage-divider,
if necessary, to reduce any external voltage applied to
this pin to less than 4V.
MAX5058
PPWM
BSS84
V REG (5V)
560 Ω
330 Ω
BUFIN
2k Ω
PS9715
PWMNEG
OR EQUIVALENT
GND
HIGH-SPEED
OPTOCOUPLER
Figure 2. Interface of MAX5058 to MAX5042/MAX5043 Using a High-Speed Optocoupler
MAX5042
MAX5043
3.10k Ω
MAX5059
REG5
PPWM
BSS84
MMBT3904
V REG (10V)
560 Ω
330 Ω
BUFIN
PWMNEG
2k Ω
PS9715
OR EQUIVALENT
HIGH-SPEED
OPTOCOUPLER
1 μ F
4.42k Ω
GND
Figure 3. Interface of MAX5059 to MAX5042/MAX5043 Using a High-Speed Optocoupler
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5059 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Parallelable Secondary-Side Synchronous Rectifier Driver and Feedback-Generator Controller ICs |
| MAX5059AUI | 功能描述:功率驱动器IC Secondary Side Synch Rectifier Driver RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX5059AUI+ | 功能描述:功率驱动器IC Secondary Side Synch Rectifier Driver RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX5059AUI+T | 功能描述:功率驱动器IC Secondary Side Synch Rectifier Driver RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX5059AUI-T | 功能描述:功率驱动器IC Secondary Side Synch Rectifier Driver RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
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