48-V to 3.3-V Forward Converter w/Active Clamp Reset Using the
... switching (ZVS) to increase overall efficiency, lower drain-to-source voltage stress, extended duty cycle beyond 50%, and reduced electromagnetic radiated emissions. Combined with synchronous rectification, this EVM is configured to operate at 300 kHz and exhibits a peak efficiency of just over 92%, ...
... switching (ZVS) to increase overall efficiency, lower drain-to-source voltage stress, extended duty cycle beyond 50%, and reduced electromagnetic radiated emissions. Combined with synchronous rectification, this EVM is configured to operate at 300 kHz and exhibits a peak efficiency of just over 92%, ...
MAX1553/MAX1554 High-Efficiency, 40V Step-Up Converters for 2 to 10 White LEDs General Description
... greater than 10µH), stability, input, and output ripple are improved by connecting a capacitor in parallel with the LEDs (C4 in Figures 1, 2, and 3). To prevent saturation, use an inductor with a current rating that matches the device’s LX current limit. However, if size is particularly important, i ...
... greater than 10µH), stability, input, and output ripple are improved by connecting a capacitor in parallel with the LEDs (C4 in Figures 1, 2, and 3). To prevent saturation, use an inductor with a current rating that matches the device’s LX current limit. However, if size is particularly important, i ...
Ch2. State of the art topologies and improvements
... is because the energy transfer only happens during two switches are on. Because of transformer reset requirement, the maximum duty cycle can only reach 0.5. Which means at best, only half of the time this converter can transfer energy to the output; this will increase the RMS current through the pri ...
... is because the energy transfer only happens during two switches are on. Because of transformer reset requirement, the maximum duty cycle can only reach 0.5. Which means at best, only half of the time this converter can transfer energy to the output; this will increase the RMS current through the pri ...
LTC3713 - Low Input Voltage, High Power, No
... At low load currents, the inductor current can drop to zero and become negative. This is detected by current reversal comparator IREV which then shuts off M2, resulting in discontinuous operation. Both switches will remain off with the output capacitor supplying the load current until the ITH voltag ...
... At low load currents, the inductor current can drop to zero and become negative. This is detected by current reversal comparator IREV which then shuts off M2, resulting in discontinuous operation. Both switches will remain off with the output capacitor supplying the load current until the ITH voltag ...
Superjunction MOSFET for charger applications
... that the output capacitance is proportional to the area of the blocking pn-junction and inverse proportional to the width of the space charge layer (or the voltage sustaining area). At low voltage the p-columns are not depleted and form a very big surface, furthermore the width of the space charge l ...
... that the output capacitance is proportional to the area of the blocking pn-junction and inverse proportional to the width of the space charge layer (or the voltage sustaining area). At low voltage the p-columns are not depleted and form a very big surface, furthermore the width of the space charge l ...
Judicious use of aluminum electrolytic capacitors
... value. Therefore, the specifications of LC are defined as a value measured several minutes after the beginning of the application of the rated voltage at 20°C. As the temperature rises, the LC increases; as the temperature decreases, the LC decreases (Fig.13). As the applied voltage decreases, the L ...
... value. Therefore, the specifications of LC are defined as a value measured several minutes after the beginning of the application of the rated voltage at 20°C. As the temperature rises, the LC increases; as the temperature decreases, the LC decreases (Fig.13). As the applied voltage decreases, the L ...
AN92 - Bias Voltage and Current Sense Circuits for Avalanche Photodiodes
... combined with feedback techniques to maintain optical signal strength at an optimal level. The feedback loop’s operating characteristics can also determine if deleterious degradation of optical components has occurred, permitting corrective measures to be taken. APD current is typically between 100n ...
... combined with feedback techniques to maintain optical signal strength at an optimal level. The feedback loop’s operating characteristics can also determine if deleterious degradation of optical components has occurred, permitting corrective measures to be taken. APD current is typically between 100n ...
MAX8795A TFT-LCD DC-DC Converter with Operational Amplifiers General Description
... adjustable delay. The step-up DC-DC converter provides the regulated supply voltage for the panel source driver ICs. The converter is a high-frequency (1.2MHz) current-mode regulator with an integrated 20V n-channel MOSFET that allows the use of ultra-small inductors and ceramic capacitors. It provi ...
... adjustable delay. The step-up DC-DC converter provides the regulated supply voltage for the panel source driver ICs. The converter is a high-frequency (1.2MHz) current-mode regulator with an integrated 20V n-channel MOSFET that allows the use of ultra-small inductors and ceramic capacitors. It provi ...
FJB5555 NPN Silicon Transistor — NPN Silicon T ransistor
... life, and (c) whose failure to perform when properly used in safety or effectiveness. accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. ANTI-COUNTERFEITING POLICY Fairchild Semiconductor Corporation's Anti-Counter ...
... life, and (c) whose failure to perform when properly used in safety or effectiveness. accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. ANTI-COUNTERFEITING POLICY Fairchild Semiconductor Corporation's Anti-Counter ...
VDD! VDD! GND! GND! - University of California, Berkeley
... When IN is high, there both M2 and the resistor is pulling against M1. Repeat the same process for Voh except there is now 3 current branches. Im1 = Im2 + Iload Iml and Iload is the same as before except we use Vol instead of Voh. For Im2, we make the assumption that the device will be in triode (re ...
... When IN is high, there both M2 and the resistor is pulling against M1. Repeat the same process for Voh except there is now 3 current branches. Im1 = Im2 + Iload Iml and Iload is the same as before except we use Vol instead of Voh. For Im2, we make the assumption that the device will be in triode (re ...
LM2574/LM2574HV SIMPLE SWITCHER 0.5A Step
... All limits specified at room temperature TYP and MAX. All room temperature limits are 100% production tested. All limits at temperature extremes are specified through correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level ...
... All limits specified at room temperature TYP and MAX. All room temperature limits are 100% production tested. All limits at temperature extremes are specified through correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level ...
full text pdf
... seen in Fig. 1. In this circuit the capacitors of SMs are subject to voltages (vCUXY , vCLXY ). Here, X = A, B or C, Y = 1, 2, ...n, where n is the number of SMs in each converter arm. Two arms – an upper (U), and a lower arm (L) are connected in series and constitute one converter phase. ...
... seen in Fig. 1. In this circuit the capacitors of SMs are subject to voltages (vCUXY , vCLXY ). Here, X = A, B or C, Y = 1, 2, ...n, where n is the number of SMs in each converter arm. Two arms – an upper (U), and a lower arm (L) are connected in series and constitute one converter phase. ...
Scintillation Breakdowns in Tantalum Capacitors
... dV/dt = 0, and the voltage does not increase with time. By carrying out this test at increased charging currents, the breakdown can be reached eventually as shown in Figure 1c. ...
... dV/dt = 0, and the voltage does not increase with time. By carrying out this test at increased charging currents, the breakdown can be reached eventually as shown in Figure 1c. ...
FAN7711 Ballast Control Integrated Circuit F AN77
... When CPH voltage exceeds 5V, the operating frequency is fixed to fOSC by RT. However, active ZVS operation is not activated until CPH reaches ~6V. The FAN7711 prepares for active ZVS operation from the instant CPH exceeds 5V during t2 to t3. When CPH becomes higher than ~6V at t3, the active ZVS ope ...
... When CPH voltage exceeds 5V, the operating frequency is fixed to fOSC by RT. However, active ZVS operation is not activated until CPH reaches ~6V. The FAN7711 prepares for active ZVS operation from the instant CPH exceeds 5V during t2 to t3. When CPH becomes higher than ~6V at t3, the active ZVS ope ...
FJD5553 NPN Silicon Transistor — NPN Silicon T ransistor
... life, and (c) whose failure to perform when properly used in safety or effectiveness. accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. ANTI-COUNTERFEITING POLICY Fairchild Semiconductor Corporation's Anti-Counter ...
... life, and (c) whose failure to perform when properly used in safety or effectiveness. accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. ANTI-COUNTERFEITING POLICY Fairchild Semiconductor Corporation's Anti-Counter ...
Reduction of Peak Input Currents during Charge Pump
... electrical energy fed through smart-card contacts or delivered by an on-board RF chip that captures an electromagnetic field in case of contact-less smartcards. It is clear that - especially in the latter case - the available supply current, and to a lesser degree also the supply voltage, is limited ...
... electrical energy fed through smart-card contacts or delivered by an on-board RF chip that captures an electromagnetic field in case of contact-less smartcards. It is clear that - especially in the latter case - the available supply current, and to a lesser degree also the supply voltage, is limited ...
Bias Voltage and Current Sense Circuits for Avalanche Photodiodes
... combined with feedback techniques to maintain optical signal strength at an optimal level. The feedback loop’s operating characteristics can also determine if deleterious degradation of optical components has occurred, permitting corrective measures to be taken. APD current is typically between 100n ...
... combined with feedback techniques to maintain optical signal strength at an optimal level. The feedback loop’s operating characteristics can also determine if deleterious degradation of optical components has occurred, permitting corrective measures to be taken. APD current is typically between 100n ...
P–n diode
This article provides a more detailed explanation of p–n diode behavior than that found in the articles p–n junction or diode.A p–n diode is a type of semiconductor diode based upon the p–n junction. The diode conducts current in only one direction, and it is made by joining a p-type semiconducting layer to an n-type semiconducting layer. Semiconductor diodes have multiple uses including rectification of alternating current to direct current, detection of radio signals, emitting light and detecting light.