cdv/dt induced turn-on in synchronous buck regulators
... A more effective way of solving the Cdv/dt induced turnon problem is to implement an AC gate drive for Q2. An example of implementing an AC gate drive can be found in the schematic of Figure 9. As shown in Figure 9, an AC coupling capacitor and a gate-to-source resistor are added to the gate of Q2. ...
... A more effective way of solving the Cdv/dt induced turnon problem is to implement an AC gate drive for Q2. An example of implementing an AC gate drive can be found in the schematic of Figure 9. As shown in Figure 9, an AC coupling capacitor and a gate-to-source resistor are added to the gate of Q2. ...
MAX11108 Tiny, 2.1mm x 1.6mm, 3Msps, Low-Power, Serial 12-Bit ADC EVALUATION KIT AVAILABLE
... operates from a 2.2V to 3.6V supply. The device consumes only 6.6mW at 3Msps and includes full powerdown mode and fast wake-up for optimal power management and a high-speed 3-wire serial interface. The 3-wire serial interface directly connects to SPI/QSPIK/ MICROWIRE® devices without external logic. ...
... operates from a 2.2V to 3.6V supply. The device consumes only 6.6mW at 3Msps and includes full powerdown mode and fast wake-up for optimal power management and a high-speed 3-wire serial interface. The 3-wire serial interface directly connects to SPI/QSPIK/ MICROWIRE® devices without external logic. ...
Circuits are classified by the type of path that the electricity follows
... three resistors; R1, R2, and R3. When the electrons leave the battery (opposite the direction of the current), they all go through the first resistor they encounter. Then all of them go through the next one and the next one. Then they all go back into the battery. ...
... three resistors; R1, R2, and R3. When the electrons leave the battery (opposite the direction of the current), they all go through the first resistor they encounter. Then all of them go through the next one and the next one. Then they all go back into the battery. ...
FEATURES DESCRIPTION D
... (1) Junction temperature = ambient for +25°C specifications. (2) Junction temperature = ambient at low temperature limit; junction temperature = ambient +23°C at high temperature limit for over temperature specifications. (3) Test levels: (A) 100% tested at +25°C. Over temperature limits by characte ...
... (1) Junction temperature = ambient for +25°C specifications. (2) Junction temperature = ambient at low temperature limit; junction temperature = ambient +23°C at high temperature limit for over temperature specifications. (3) Test levels: (A) 100% tested at +25°C. Over temperature limits by characte ...
Copyright 1998 Marc E. Herniter - Rose
... functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaran ...
... functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaran ...
AN58 - 5V to 3.3V Converters for Microprocessor Systems
... much smaller heat sink could be used in this application if some air flow, such as from the computer’s cooling fan, could be guaranteed. At higher output currents and dissipations it is almost always necessary to provide some air flow in order to avoid an unreasonably large heat sink. ...
... much smaller heat sink could be used in this application if some air flow, such as from the computer’s cooling fan, could be guaranteed. At higher output currents and dissipations it is almost always necessary to provide some air flow in order to avoid an unreasonably large heat sink. ...
LT1993-4
... Amplifier/ADC driver for use in applications from DC to 900MHz. The LT1993-4 has been designed for ease of use, with minimal support circuitry required. Exceptionally low input-referred noise and low distortion products (with either single-ended or differential inputs) make the LT1993-4 an excellent ...
... Amplifier/ADC driver for use in applications from DC to 900MHz. The LT1993-4 has been designed for ease of use, with minimal support circuitry required. Exceptionally low input-referred noise and low distortion products (with either single-ended or differential inputs) make the LT1993-4 an excellent ...
Circuit Note CN-0150
... The RF signal being measured is applied to the AD8318. The device is configured in its so-called measurement mode, with the VSET and VOUT pins connected together. In this mode, the output voltage vs. the input signal level is linear-in-dB (nominally −24 mV/dB) and has a typical output voltage range ...
... The RF signal being measured is applied to the AD8318. The device is configured in its so-called measurement mode, with the VSET and VOUT pins connected together. In this mode, the output voltage vs. the input signal level is linear-in-dB (nominally −24 mV/dB) and has a typical output voltage range ...
ZXLD1320 Buck mode DC-DC converter for LED driving with Description
... LED current can also be adjusted by applying a low frequency PWM signal to the ADJ pin to turn the device On and Off. This will produce an average output current proportional to the duty cycle of the control signal. The device can be shut down by shorting the ADJ pin to ground, or pulling it to a vo ...
... LED current can also be adjusted by applying a low frequency PWM signal to the ADJ pin to turn the device On and Off. This will produce an average output current proportional to the duty cycle of the control signal. The device can be shut down by shorting the ADJ pin to ground, or pulling it to a vo ...
General description
... synchronized with the peaking time of the shaper to ensure a maximum dynamic range and offset swing. The analogue value can then be red through the read CMOS switch. A follower forbids the charge of the capacitance to go away through the readout electronic. The value is then conserved during the rea ...
... synchronized with the peaking time of the shaper to ensure a maximum dynamic range and offset swing. The analogue value can then be red through the read CMOS switch. A follower forbids the charge of the capacitance to go away through the readout electronic. The value is then conserved during the rea ...
AAT1239-1 数据资料DataSheet下载
... increased error signal sensed across the ballast resistor (R1). The controller responds by increasing the peak inductor current, resulting in higher average current in the inductor and LED string(s). Alternatively, when the VFB is reduced, the controller responds by decreasing the peak inductor curr ...
... increased error signal sensed across the ballast resistor (R1). The controller responds by increasing the peak inductor current, resulting in higher average current in the inductor and LED string(s). Alternatively, when the VFB is reduced, the controller responds by decreasing the peak inductor curr ...
Discussion 3A - EECS: www
... We know from euler’s identity that eiθ = cos(θ ) + isin(θ ). Using this identity, we can obtain an expression for cos(θ ) in terms of an exponential: cos(θ ) = Re(eiθ ) Extending this to our voltage signal from above: v(t) = V0 cos(ωt + φv ) = V0 Re(eiωt+iφv ) = V0 Re(eiφv eiωt ) Now, since we know ...
... We know from euler’s identity that eiθ = cos(θ ) + isin(θ ). Using this identity, we can obtain an expression for cos(θ ) in terms of an exponential: cos(θ ) = Re(eiθ ) Extending this to our voltage signal from above: v(t) = V0 cos(ωt + φv ) = V0 Re(eiωt+iφv ) = V0 Re(eiφv eiωt ) Now, since we know ...
MAX15041 Evaluation Kit Evaluates: General Description Features
... 4) Connect a DVM across the VOUT and PGND PCB pads. 5) Connect a DVM across the PGOOD and SGND PCB pads. 6) Turn on the power supply. 7) Set the power-supply voltage to 12V. 8) Enable the 3A electronic load. 9) Verify that the voltmeter connected to VOUT measures 3.3V. 10) Verify that the vol ...
... 4) Connect a DVM across the VOUT and PGND PCB pads. 5) Connect a DVM across the PGOOD and SGND PCB pads. 6) Turn on the power supply. 7) Set the power-supply voltage to 12V. 8) Enable the 3A electronic load. 9) Verify that the voltmeter connected to VOUT measures 3.3V. 10) Verify that the vol ...
CMOS high-speed dual-modulus frequency divider for RF frequency
... Fig. 7 shows the functional block diagram of the dualmodulus frequency divider, which includes a divide-by-3or-4 synchronous counter as the first (high-frequency) stage followed by a divide-by-4 asynchronous counter as the second (low-frequency) stage. The input signal, amplified by a logic inverter ...
... Fig. 7 shows the functional block diagram of the dualmodulus frequency divider, which includes a divide-by-3or-4 synchronous counter as the first (high-frequency) stage followed by a divide-by-4 asynchronous counter as the second (low-frequency) stage. The input signal, amplified by a logic inverter ...
ADM6819 数据手册DataSheet 下载
... When the primary supply is above the desired threshold, the ADM6819/ADM6820 are designed to control the N-channel FET in the secondary power path to enable the secondary supply. The GATE pin is held low while both VCC1 and VCC2 are below the undervoltage threshold, ensuring that the FET is held off. ...
... When the primary supply is above the desired threshold, the ADM6819/ADM6820 are designed to control the N-channel FET in the secondary power path to enable the secondary supply. The GATE pin is held low while both VCC1 and VCC2 are below the undervoltage threshold, ensuring that the FET is held off. ...
Slide 1
... •Our insatiable quest for a bigger and better Audio Visual experience. When a TV panel goes beyond 32 inches, the CCFL (cold cathode fluorescent) backlighting is driven directly from the 400VDC. Another example of the demand for higher voltages and energy efficiency. The larger the panel the more vo ...
... •Our insatiable quest for a bigger and better Audio Visual experience. When a TV panel goes beyond 32 inches, the CCFL (cold cathode fluorescent) backlighting is driven directly from the 400VDC. Another example of the demand for higher voltages and energy efficiency. The larger the panel the more vo ...
Schmitt trigger
In electronics a Schmitt trigger is a comparator circuit with hysteresis implemented by applying positive feedback to the noninverting input of a comparator or differential amplifier. It is an active circuit which converts an analog input signal to a digital output signal. The circuit is named a ""trigger"" because the output retains its value until the input changes sufficiently to trigger a change. In the non-inverting configuration, when the input is higher than a chosen threshold, the output is high. When the input is below a different (lower) chosen threshold the output is low, and when the input is between the two levels the output retains its value. This dual threshold action is called hysteresis and implies that the Schmitt trigger possesses memory and can act as a bistable multivibrator (latch or flip-flop). There is a close relation between the two kinds of circuits: a Schmitt trigger can be converted into a latch and a latch can be converted into a Schmitt trigger.Schmitt trigger devices are typically used in signal conditioning applications to remove noise from signals used in digital circuits, particularly mechanical contact bounce. They are also used in closed loop negative feedback configurations to implement relaxation oscillators, used in function generators and switching power supplies.