The NJW4161 is a MOSFET Drive switching regulator IC for Buck Converter that operates wide input range from 3.1V to 40V. It can provide large current application because of built-in highly effective Pch MOSFET 10V drive circuit. There are two types, Hiccup type and Latch type, of over current protection version. Dual Channel Synchronous-Rectified Buck MOSFET Driver DATASHEET The HIP6602 is a high frequency, two power channel MOSFET driver specifically designed to drive four power N-Channel MOSFETs in a synchronous-rectified buck converter topology. These drivers combined with a HIP63xx series of Multi-Phase Buck PWM controller and Intersil’s.
Mosfet Driver Schematic
Mosfet Driver Circuit Diagram
Synchronous Buck Converter Mosfet Driver
High-power LEDs over 1W are now quite inexpensive. I'm sure many of you are incorporating LEDs as light sources in your projects.
However I realize that the finding and configuring the power supply is still not as simple as it can be; commercially available LED drivers are convenient, but often overkill or not flexible. Even my own Universal LED Driver can be overkill at times. Some projects call for a bear minimum, simple driver.
Poorman's Buck - Simple, Constant Current LED Driver
So I created the 'Poorman's Buck' - simple switch-mode (buck) constant current LED driver that's built without a microcontroller or a specialized IC. All of the parts are easy to obtain, 'off-the-shelf', though-hole parts.
Even though this driver is minimalistic, I added a current adjust function that doubles as a dimmer, and an input to control the output with PWM. This makes the 'Poorman's Buck' perfect building block for Arduino or other microcontroller based LED projects - you can control many high-power LEDs from a microcontroller simply by sending PWM signal. With Arduino you can simply use 'AnalogWrite()' to control the brightness of high-power LEDs.