Maxim Integrated provides many LED (light-emitting diode) drivers, with PWM (pulse-width modulation) intensity control. This application note explains several methods for applying additional PWM-based intensity control to LED drivers. Several constant-current LED drivers, with or without built-in PWM...
with PWM (pulse-width modulation) intensity control. This application note explains several methods for applying additional PWM-based intensity control to LED drivers. Several constant-current LED drivers, with or without built-in PWM, serve as examples of the techniques. ...
PWM holds the frequency constant and varies the pulse width (tON) to adjust the output voltage. The average power delivered is proportional to the duty cycle, D, making this an efficient way to provide power to a load.As an example, for a desired output voltage of 15 V and an available...
Continuous PWM operation can handle a wide range of load currents, but the efficiency rapidly degrades at light loads because the power required by the regulator consumes a larger percentage of the total power delivered to the load. For portable applications, buck regulators incorporate additional ...
How to Apply DC-to-DC Step-Up (Boost) Regulators Successfully ByKen Marasco Power for portable electronic devices such as smartphones, GPS navigation systems, and tablets can come from low-voltage solar panels, batteries, or ac-to-dc power supplies. Battery-powered systems often stack cells in...
2. Low means that apply low level on QxT or QxB and High means that apply high level on QxT or QxB. 3. PWM_xP and PWM_xN are complementary PWM pair and applied on QxT and QxB respectively. Application Note How to use SCT to generate PWM and control BLDC motor on LPC51U68, Rev....
to apply gain or not. The design and required components of VCA compressors allow them to be extremely versatile, transparent, precise, and physically smaller than older designs. While it’s easy to find examples of VCA compression on individual instruments, the most celebrated use for VCA ...
AN4277 Application note How to use PWM shutdown for motor control and digital power conversion on STM32 MCUs Introduction The purpose of this application note is to describe the STM32 device timer break feature. It details its use with other S...
various module packaging standards before introducing motor drive and inverter design options based on IGBT modules and driver ICs from vendors such asNXP Semiconductors,Infineon Technologies,Texas Instruments,STMicroelectronics, andON Semiconductor, and how to apply them, including the use of evaluation ...
In this case the Bus Voltage will rise unless there is provision to hold it down. The smoothing capacitors will be charged during an increase in Bus Voltage and this will apply a small amount of braking to the motor shaft. Usually this is around 10%, but is dependent on the smoothing ca...