概览
描述
The ISL8115 is a synchronous buck PWM controller with current sharing capability. The current sharing function allows multiple modules to be connected in parallel to achieve higher output current and to reduce input and output ripple current, resulting in fewer components and reduced output dissipation. Utilizing voltage-mode control with input voltage feed-forward compensation, the ISL8115 maintains a constant loop gain for optimal transient response, especially for applications with a wide input voltage range. The ISL8115 protects against overcurrent conditions by inhibiting the PWM operation while monitoring the current with DCR of the output inductor, or a precision resistor. It also has a pre-POR overvoltage protection option, which provides some protection to the load if the upper MOSFET(s) is shorted. The ISL8115 features remote ground sensing, programmable input voltage UVLO, output under/overvoltage protection, power-good indication, and fault Hand Shake capability.
特性
- Wide VIN range operation: 2.97V to 36V; up to 5.5V output and 30A load current per phase
- Fast transient response
- Voltage-mode PWM leading-edge modulation with non-linear control
- Input voltage feed-forward
- Integrated 5V high speed 4A MOSFET gate drivers
- Internal bootstrap diode
- Excellent output voltage regulation
- 0.6V ±1.0% internal reference (-40°C ~ 125°C)
- 0.6V ±0.7% internal reference (-40°C ~ 105°C)
- Differential voltage sensing
- Excellent current balancing and overcurrent protection
- Peak and average overcurrent protection
- Output current monitor on the ISET pin
- Oscillator programmable from 150kHz to 1.5MHz
- Frequency synchronization to external clock signal
- Diode emulation mode for light load efficiency improvement
- Power-good open drain output
- Pre-bias start-up function
- Output OVP, UVP; OTP
- Adjustable Soft-Start
产品对比
应用
文档
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类型 | 文档标题 | 日期 |
数据手册 | PDF 1.41 MB | |
产品变更通告 | PDF 326 KB | |
指南 | PDF 1.43 MB | |
手册 - 开发工具 | PDF 908 KB | |
指南 | PDF 910 KB | |
应用说明 | PDF 509 KB | |
应用说明 | PDF 397 KB | |
7 items
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设计和开发
软件与工具
开发板与套件
High Voltage Synchronous Buck PWM Controller with Integrated Gate Driver Demonstration Board
The ISL8115DEMO1Z is a compact reference design synchronous buck converter (28.19mm x 16.89mm) for implementing Renesas' ISL8115 wide input range PWM controller. Utilizing voltage mode control with input feed-forward, the ISL8115DEMO1Z maintains a constant loop gain for optimal transient...
Synchronous Buck Converter Evaluation Board
The ISL8115EVAL1Z is a synchronous buck converter evaluation board that is used to implement Renesas' ISL8115 wide input range pulse width modulation (PWM) controller. Utilizing voltage mode control with input feed-forward, this board maintains a constant loop gain for an optimal transient...
Synchronous Buck Converter Evaluation Board
The ISL8115EVAL2Z is a synchronous buck converter evaluation board that is used to implement Renesas' ISL8115 wide input range pulse width modulation (PWM) controller. Utilizing voltage mode control with input feed-forward, this board maintains a constant loop gain for an optimal transient...
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