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| 型号： | MAX8791BGTA+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 7/12页 |
| 文件大小： | 0K |
| 描述： | IC MOSF DRIVER 1PH SYNCH 8TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 配置： | 高端和低端，同步 |
| 输入类型： | 差分 |
| 延迟时间： | 14ns |
| 电流 - 峰： | 2.7A |
| 配置数： | 1 |
| 输出数： | 2 |
| 高端电压 - 最大（自引导启动）： | 36V |
| 电源电压： | 4.2 V ~ 5.5 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WQFN 裸露焊盘 |
| 供应商设备封装： | 8-TQFN-EP |
| 包装： | 带卷 (TR) |
Single-Phase, Synchronous MOSFET Drivers
INPUT (V IN )
C IN
PWM
DH
N H
2x 10 μ F
PWM
SKIP
SKIP
BST
C BST
0.22 μ F
L1
0.36 μ H
+5V BIAS
SUPPLY
CV DD
1.0 μ F
V DD
MAX8791
MAX8791B
LX
DL
N L
D L
OUTPUT (V OUT )
C OUT
2x 330 μ F
6m ?
GND
PAD
Figure 3. Typical MOSFET-Driver Application Circuit
Table 1. Typical Components
DESIGNATION
N H
N L
BST Capacitor (C BST )
Schottky Diode
Inductor (L1)
Output Capacitors (C OUT )
Input Capacitors (C IN )
QTY
1 per phase
1–2 per phase
1 per phase
Optional
1 per phase
1–2 per phase
1–2 per phase
COMPONENT SUPPLIERS
Siliconix Si4860DY
Siliconix Si4336DY
0.1μF or 0.22μF ceramic capacitor
3A, 40V Schottky diode
0.36μH, 26A, 0.9m ? power inductor
330μF, 6m ? per phase
10μF, 25V X5R ceramic capacitors
Detail Description
The MAX8791/MAX8791B single-phase gate drivers,
along with the MAX8736 or MAX8786 multiphase con-
trollers, provide flexible multiphase CPU core-voltage
supplies. The low driver resistance allows up to 7A out-
put peak current. Each MOSFET driver in the
MAX8791/MAX8791B is capable of driving 3nF capaci-
tive loads with only 9ns propagation delay and 4ns/8ns
(typ) fall/rise times, allowing operation up to 3MHz per
phase. Larger capacitive loads are allowable but result
in longer propagation and transition times. Adaptive
dead-time control prevents shoot-through currents and
maximizes converter efficiency while allowing operation
with a variety of MOSFETs and PWM controllers. An
input undervoltage lockout (UVLO) circuit allows proper
power-on sequencing.
PWM Input
The drivers for the MAX8791/MAX8791B are disabled—
DH and DL pulled low—if the PWM input remains in the
midlevel window for at least 300ns (typ). Once the
PWM signal is driven high or low, the MAX8791/
MAX8791B immediately exit the low-current shutdown
state and resume active operation. Outside the shut-
down state, the drivers are enabled based on the rising
and falling thresholds specified in the Electrical
Characteristics.
MOSFET Gate Drivers (DH, DL)
The high-side driver (DH) has a 0.9 ? sourcing resis-
tance and 0.7 ? sinking resistance, resulting in 2.2A
peak sourcing current and 2.7A peak sinking current
with a 5V supply voltage. The low-side driver (DL) has a
typical 0.7 ? sourcing resistance and 0.3 ? sinking
resistance, yielding 2.7A peak sourcing current and 8A
peak sinking current. This reduces switching losses,
making the MAX8791/MAX8791B ideal for both high-
frequency and high output-current applications.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8791GTA+ | 功能描述:功率驱动器IC Single-Phase Synch MOSFET 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 |
| MAX8791GTA+T | 功能描述:功率驱动器IC Single-Phase Synch MOSFET 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 |
| MAX8792ETD+ | 制造商:Maxim Integrated Products 功能描述:SOFT SW PWM CNTRLR 1-OUT PWM CNTRLR 600KHZ 14TDFN EP - Rail/Tube 制造商:Maxim Integrated Products 功能描述:SINGLE QUICK- PWM STEP DOWN CONTROL |
| MAX8792ETD+T | 功能描述:电压模式 PWM 控制器 Single Quick-PWM Step-Down Controller 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 |
| MAX8792EVKIT+ | 功能描述:电源管理IC开发工具 MAX8792 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 |
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