Step-Down DC-to-DC Controller ADP1821 FEATURES
... Frequency Synchronization Input. Drive SYNC with an external 300 kHz to 1.2 MHz signal to synchronize the converter switching frequency to the applied signal. The maximum SYNC frequency is limited to 2 times the nominal internal frequency selected by FREQ. Do not leave SYNC unconnected; when not use ...
... Frequency Synchronization Input. Drive SYNC with an external 300 kHz to 1.2 MHz signal to synchronize the converter switching frequency to the applied signal. The maximum SYNC frequency is limited to 2 times the nominal internal frequency selected by FREQ. Do not leave SYNC unconnected; when not use ...
fundemental principes of working in resonant converter
... By raising the switching frequency, you can reduce the size of a transformer and filter, which helps build a smaller and lighter converter with high power density. But as presented earlier, switching loss undermines the efficiency of the entire power system in converting energy, as more losses are g ...
... By raising the switching frequency, you can reduce the size of a transformer and filter, which helps build a smaller and lighter converter with high power density. But as presented earlier, switching loss undermines the efficiency of the entire power system in converting energy, as more losses are g ...
A boost-topology battery charger powered from a solar panel By Jeff Falin,
... nonsynchronous boost power stage. Both use the highside gate drive (GDRVHI ) to drive the power FET (QPWR ). However, a buck controller cannot be easily configured to drive a synchronous rectifying switch for a boost converter; so QSYNC is replaced by diode DRECT, and the low-side gate drive (GDRVLO ...
... nonsynchronous boost power stage. Both use the highside gate drive (GDRVHI ) to drive the power FET (QPWR ). However, a buck controller cannot be easily configured to drive a synchronous rectifying switch for a boost converter; so QSYNC is replaced by diode DRECT, and the low-side gate drive (GDRVLO ...
Aalborg Universitet Thøgersen, Paul Bach
... After 1 s, the power is increased in a number of arbitrary steps up to 5 s. Having the steps of power and not a power ramp, and the steps are faster than the controller response the steady state cannot be achieved between steps. At around 7-8 s in time the controller reaches steady state and the ope ...
... After 1 s, the power is increased in a number of arbitrary steps up to 5 s. Having the steps of power and not a power ramp, and the steps are faster than the controller response the steady state cannot be achieved between steps. At around 7-8 s in time the controller reaches steady state and the ope ...
High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters General Description ____________________________Features
... The MAX1674/MAX1675/MAX1676 compact, high-efficiency, step-up DC-DC converters fit in small µMAX packages. They feature a built-in synchronous rectifier, which improves efficiency and reduces size and cost by eliminating the need for an external Schottky diode. Quiescent supply current is only 16µA. ...
... The MAX1674/MAX1675/MAX1676 compact, high-efficiency, step-up DC-DC converters fit in small µMAX packages. They feature a built-in synchronous rectifier, which improves efficiency and reduces size and cost by eliminating the need for an external Schottky diode. Quiescent supply current is only 16µA. ...
ConcepTest 25.1 Capacitors
... a potential difference of 400 V and is then disconnected from the charging battery. If the plate spacing is now doubled (without changing Q), what is the new value of the voltage? Once the battery is disconnected, Q has to remain constant, constant since no charge can flow either to or from the batt ...
... a potential difference of 400 V and is then disconnected from the charging battery. If the plate spacing is now doubled (without changing Q), what is the new value of the voltage? Once the battery is disconnected, Q has to remain constant, constant since no charge can flow either to or from the batt ...
Lecture 14 Disadvantages of Transformers and Introduction to the
... We list below four disadvantages to the use of transformers, operating at fSW, in PWM converter circuits. 1. Step-up/down voltages, that now vary over a wider dynamic range due to transformer action, may further stress solid state components in either the current through the switches or the voltages ...
... We list below four disadvantages to the use of transformers, operating at fSW, in PWM converter circuits. 1. Step-up/down voltages, that now vary over a wider dynamic range due to transformer action, may further stress solid state components in either the current through the switches or the voltages ...
B1 Buffer Preamp
... (clockwise position) of potentiometers P100 or P200. A divided input signal appears on the wiper. This signal goes to the Gates of Q100 and Q200 through a resistor R102, R202 and capacitor C100, C200. As a practical matter, the input impedance of this preamp is determined by this volume control pote ...
... (clockwise position) of potentiometers P100 or P200. A divided input signal appears on the wiper. This signal goes to the Gates of Q100 and Q200 through a resistor R102, R202 and capacitor C100, C200. As a practical matter, the input impedance of this preamp is determined by this volume control pote ...
Be Clever Center Chapter 5: DC voltage.
... with time. Batteries are sources of direct voltage. - A direct current is the current that flows in one direction it is characterized by a unique sense and value. - When the voltage is direct voltage then the corresponding current is direct current. 4. Measurement of voltage. - In an open or closed ...
... with time. Batteries are sources of direct voltage. - A direct current is the current that flows in one direction it is characterized by a unique sense and value. - When the voltage is direct voltage then the corresponding current is direct current. 4. Measurement of voltage. - In an open or closed ...
C517
... design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all ...
... design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all ...
Delphi DNT04, Non-Isolated Point of Load
... Delta’s DC/DC power modules are characterized in heated vertical wind tunnels that simulate the thermal environments encountered in most electronics equipment. This type of equipment commonly uses vertically mounted circuit cards in cabinet racks in which the power modules are mounted. The following ...
... Delta’s DC/DC power modules are characterized in heated vertical wind tunnels that simulate the thermal environments encountered in most electronics equipment. This type of equipment commonly uses vertically mounted circuit cards in cabinet racks in which the power modules are mounted. The following ...
Banner PS24-1 PS115-1 Sensor Power Supply
... If the supplied housing is used, either insert the two DIN clips into the grooves on the housing’s underside and add the two end caps (as shown in Figure 3), or install only the end caps and use the screw-holes in the end caps for mounting to a flat surface. Screws are provided for attaching the end ...
... If the supplied housing is used, either insert the two DIN clips into the grooves on the housing’s underside and add the two end caps (as shown in Figure 3), or install only the end caps and use the screw-holes in the end caps for mounting to a flat surface. Screws are provided for attaching the end ...
RT9179
... This capacitor type offers the most capacitance for the money. The disadvantages are that they are larger in physical size, not widely available in surface mount, and have poor AC performance (especially at higher frequencies) due to higher ESR and ESL. Compared by size, the ESR of an aluminum elect ...
... This capacitor type offers the most capacitance for the money. The disadvantages are that they are larger in physical size, not widely available in surface mount, and have poor AC performance (especially at higher frequencies) due to higher ESR and ESL. Compared by size, the ESR of an aluminum elect ...
Average simulations of FLYBACK converters with SPICE3
... depicted in Figure 7a. The primary coil is simply shortened since it does not affect discontinuous operation in the average model. However, Dr. Bello states that despite state-space average technique results, keeping the inductor at its nominal value produces a second high-frequency pole and a RHP z ...
... depicted in Figure 7a. The primary coil is simply shortened since it does not affect discontinuous operation in the average model. However, Dr. Bello states that despite state-space average technique results, keeping the inductor at its nominal value produces a second high-frequency pole and a RHP z ...
Introduction to Solid State Electronics_independent_study
... The behavior of the p-n junction under forward -and reverse-biased conditions is very useful in several applications. Here, we’ll consider one such application known as rectification. Rectification is a process of converting an AC signal to a DC signal. Figure 2 shows a simple circuit of a rectifier ...
... The behavior of the p-n junction under forward -and reverse-biased conditions is very useful in several applications. Here, we’ll consider one such application known as rectification. Rectification is a process of converting an AC signal to a DC signal. Figure 2 shows a simple circuit of a rectifier ...
M3 Semiconductor Analyzer Manual
... as well as a base-emitter shunt resistor. All the parameters are displayed in three different panels. The first panel displays the HFE (static current gain) of the transistor. The M3 can measure current gain in the range of 5 to 999. The current gain varies according to the operating condition of th ...
... as well as a base-emitter shunt resistor. All the parameters are displayed in three different panels. The first panel displays the HFE (static current gain) of the transistor. The M3 can measure current gain in the range of 5 to 999. The current gain varies according to the operating condition of th ...
CBM Modules
... transformer. For this the transformer impedance must be known. Transformer impedance is specified as a percentage and is the percentage of the rated input voltage required to produce the rated full load secondary current. The secondary of the transformer is short circuited and the primary voltage is ...
... transformer. For this the transformer impedance must be known. Transformer impedance is specified as a percentage and is the percentage of the rated input voltage required to produce the rated full load secondary current. The secondary of the transformer is short circuited and the primary voltage is ...
Bus-bars of Substations Bus-bars
... bus bar are connected by a circuit breaker • If the fault occurs on any section of the bus, that section can be isolated without affecting the supply from other sections. ...
... bus bar are connected by a circuit breaker • If the fault occurs on any section of the bus, that section can be isolated without affecting the supply from other sections. ...
Buck converter
A buck converter is a voltage step down and current step up converter.The simplest way to reduce the voltage of a DC supply is to use a linear regulator (such as a 7805), but linear regulators waste energy as they operate by dissipating excess power as heat. Buck converters, on the other hand, can be remarkably efficient (95% or higher for integrated circuits), making them useful for tasks such as converting the main voltage in a computer (12V in a desktop, 12-24V in a laptop) down to the 0.8-1.8V needed by the processor.