In "on" direction this means that it is only valid under hard-switching conditions. For soft- switching events the drain voltage transient has happened before the transistor is switched "on". Then the gate simply behaves like the constant capacitance Ciss (0). Qgd is p...
The MOTIX™ 6EDL7141 can control the slew rate of the driving signal to control the rise and fall slew rates of the drain-to-source voltage by adjusting the gate drive sink and source currents during different time segments in the switch-on and ...
• Convection: heat transferred to a fluid or a gas – The amount of heat transferred by convection depends on the presence of passive/active heatsink. A fan is rarely used in automotive systems because of cost and reliability issues. Therefore, unlike microprocessors boards, convec...
This paper describes a high-frequency soft-switching dc-dc converter with a simple energy recovery capacitor snubber on the secondary side. The presented dc-dc full-bridge converter with the energy recovery snubber removes the main drawbacks of the class
However, it should be noted that this model specifically focuses on the LED device itself and does not cover the entire LED system, which includes aspects such as electric power control and thermal design of the heatsink. In order to relate the optical, electrical, and thermal aspects of ...
Heatsink Ground: A ground is provided for the heatsink. This will help shunt any noise from the sink to chassis ground. It is designed not to burn when the heatsink is shorted to 12v (which sometimes happens if the power connections are made while the B+ wire has voltage on it). ...
In contrast, the turn-off loss remains constant with Vcc , since the driver sink current is determined by Vpl OFF. Fig. 18. Total switching loss at 1 MHz, 12-V input as a function of (a) load current (Vcc = 8 V, Ls1 = 250 pH); (b) driver supply voltage (Io = 30 A, Ls1...
Sink Impedance 110 Ω SYNC Threshold (falling) 1.3 V SYNC Frequency SYNC Pulse Width Minimum RT = 11kΩ 550 15 kHz ns RAMP GENERATOR Ramp Current 1 Vin = 60V, Vout=10V 467 550 633 µA Ramp Current 2 Vin = 10V, Vout=10V 36 50 64 µA PWM COMPARATOR Forced Off-time 416 500...
−40°C ≤ TJ ≤ 125°C 2.97 ≤ VIN ≤ 40V ΔVLOAD Output Voltage Load Regulation IEAO Source/Sink VUVLO VUV(HYS) Fnom RDS1 (ON) RDS2 (ON) VDR (max) Dmax Input Undervoltage Lock-out Input Undervoltage Lock-out Hysteresis Nominal Switching Frequency Driver Switch On Resistance (top...
PURPOSE: To reduce the cost of the circuit by decreasing a turn-off loss of the switching element and to reduce the size of its heat sink. ;CONSTITUTION: An earth 5 of a control circuit 4 is connected to a source terminal 3 of a power MOSFET 1 at a position of a connecting point ...