- 3A, SIMPLE SWITCHER® Power Module with 5.5V Maximum Input
- 4A, SIMPLE SWITCHER® Power Module with 5.5V Maximum Input
- 5A, SIMPLE SWITCHER® Power Module with 5.5V Maximum Input
- 1A SIMPLE SWITCHER® Power Module with 20V Maximum Input Voltage
- 2A SIMPLE SWITCHER® Power Module with 20V Maximum Input Voltage
- 3A SIMPLE SWITCHER® Power Module with 20V Maximum Input Voltage
- 1A SIMPLE SWITCHER® Power Module with 42V Maximum Input
- 2A SIMPLE SWITCHER® Power Module with 42V Maximum Input
- 3A SIMPLE SWITCHER® Power Module with 42V Maximum Input
- LM3421Q/23Q
N-Channel Controllers for Constant Current LED Drivers
- LM3429Q1
N-Channel Controller for Constant Current LED Drivers
- Scalable 2-Phase Synchronous Buck Controllers with Integrated FET Drivers and Linear Regulator Controller
- Scalable 2-Phase Synchronous Buck Controllers with Integrated FET Drivers and Linear Regulator Controller
- LM5112Q
Tiny 7A MOSFET Gate Driver
See all new power solutions.
Overview: A higher-power boost converter often requires special consideration to minimize power losses and temperature rise in the FETs, diode, and inductor. Regarding FETs, many designers opt to place FETs in parallel to reduce conduction losses. However, placing FETs in parallel can increase transitional losses. This article discusses a number of approaches that can be considered to reduce total losses in boost FETs. Possible options include selecting lower gate-charge FETs, selecting alternative controllers with higher gate-drive current, or using a gate driver such as the LM5112. An alternative approach using National Semiconductor’s PowerWise® LM25037 dual-output gate-drive controller and its benefits are considered as compared to using a single gate-drive controller such as the LM5020. Further, this article will examine ways to approximate total FET losses and then make a selection from the potential approaches that best suits the application requirement.
