MAX1889 Triple-Output TFT LCD Power Supply with Fault Protection General Description
... complete power-supply system. The main DC-DC converter is a high-frequency (500kHz/1MHz), current-mode step-up regulator with an integrated N-channel power MOSFET that allows the use of ultra-small inductors and ceramic capacitors. With its high closed-loop bandwidth performance, the MAX1889 provide ...
... complete power-supply system. The main DC-DC converter is a high-frequency (500kHz/1MHz), current-mode step-up regulator with an integrated N-channel power MOSFET that allows the use of ultra-small inductors and ceramic capacitors. With its high closed-loop bandwidth performance, the MAX1889 provide ...
Single phase controller with digital interface
... External reference operation The REFIN pin is usually the buffered version of the internal reference used for the regulation. When external reference is set through MFR_SETTINGS command, the REFIN becomes an input (direct or divided by 2). The external reference voltage connected is then used as a r ...
... External reference operation The REFIN pin is usually the buffered version of the internal reference used for the regulation. When external reference is set through MFR_SETTINGS command, the REFIN becomes an input (direct or divided by 2). The external reference voltage connected is then used as a r ...
New Breed of Network Fault-Tolerant Voltage-Source
... per converter with the proposed HVDC system is one quarter of those required for a system based on the modular multilevel converter. With a large number of cells per phase, the voltage waveform generated across the H-bridge cells is as shown in Fig. 1, and an effective switching frequency per device ...
... per converter with the proposed HVDC system is one quarter of those required for a system based on the modular multilevel converter. With a large number of cells per phase, the voltage waveform generated across the H-bridge cells is as shown in Fig. 1, and an effective switching frequency per device ...
Wideband, High Gain Voltage Limiting Amplifier
... (6) I VH (VH bias current) is negative, and IVL (VL bias current) is positive, under these conditions. See Note 3 and Figures 2 and 12. (7) Limiter feedthrough is the ratio of the output magnitude to the sinewave added to V H (or V L) when VIN = 0. (8) VH slew rate conditions are: VIN = VCM +0.4V, G ...
... (6) I VH (VH bias current) is negative, and IVL (VL bias current) is positive, under these conditions. See Note 3 and Figures 2 and 12. (7) Limiter feedthrough is the ratio of the output magnitude to the sinewave added to V H (or V L) when VIN = 0. (8) VH slew rate conditions are: VIN = VCM +0.4V, G ...
A Multiple Time Programmable On-chip Trimming Technique for
... with more flexibility. The measurement results demonstrate the variation of reference voltages could be reduces from 120mV to 20mV after the proposed trimming method was applied. ...
... with more flexibility. The measurement results demonstrate the variation of reference voltages could be reduces from 120mV to 20mV after the proposed trimming method was applied. ...
TPS51200 数据资料 dataSheet 下载
... Tracking Startup and Shutdown The TPS51200 also supports tracking startup and shutdown when EN is tied directly to the system bus and not used to turn on or turn off the device. During tracking startup, VO follows REFOUT once REFIN voltage is greater than 0.39 V. REFIN follows the rise of VDDQ rail ...
... Tracking Startup and Shutdown The TPS51200 also supports tracking startup and shutdown when EN is tied directly to the system bus and not used to turn on or turn off the device. During tracking startup, VO follows REFOUT once REFIN voltage is greater than 0.39 V. REFIN follows the rise of VDDQ rail ...
BDTIC C C M - P F C
... begins operating its gate drive and performs its startup as shown in Figure 3. If VCC drops below 11V, the IC is off. The IC will then be consuming typically 1.4mA, whereas consuming 6.4mA during normal operation The IC can be turned off and forced into standby mode by pulling down the voltage at pi ...
... begins operating its gate drive and performs its startup as shown in Figure 3. If VCC drops below 11V, the IC is off. The IC will then be consuming typically 1.4mA, whereas consuming 6.4mA during normal operation The IC can be turned off and forced into standby mode by pulling down the voltage at pi ...
Low current measurement - Keithley Application Note
... coefficient than high value resistors. Second, low resistor values reduce the input time constant and result in faster instrument response times. Finally, for circuit loading considerations, the input resistance RSHUNT of an ammeter should be small to reduce the voltage burden EIN. However, using an ...
... coefficient than high value resistors. Second, low resistor values reduce the input time constant and result in faster instrument response times. Finally, for circuit loading considerations, the input resistance RSHUNT of an ammeter should be small to reduce the voltage burden EIN. However, using an ...
IQ22x Series Controllers Data Sheet - Trend Partner
... Connectors: Two part connectors are used throughout to facilitate wiring. A busbar is provided for screen termination. Power: 230 Vac 50/60 Hz, 24 Vac or 24 Vdc. Fusing: The controller has no replaceable fuses; protection is provided by means of a self-resetting thermally protected transformer. The ...
... Connectors: Two part connectors are used throughout to facilitate wiring. A busbar is provided for screen termination. Power: 230 Vac 50/60 Hz, 24 Vac or 24 Vdc. Fusing: The controller has no replaceable fuses; protection is provided by means of a self-resetting thermally protected transformer. The ...
Active-Clamped, Spread-Spectrum, Current-Mode PWM Controllers MAX5974A/MAX5974B/MAX5974C/MAX5974D EVALUATION KIT AVAILABLE
... efficiency. The AUX driver recycles magnetizing current instead of wasting it in a dissipative clamp circuit. Programmable dead time between the AUX and main driver allows for zero-voltage switching (ZVS). Under lightload conditions, the devices reduce the switching frequency (frequency foldback) to ...
... efficiency. The AUX driver recycles magnetizing current instead of wasting it in a dissipative clamp circuit. Programmable dead time between the AUX and main driver allows for zero-voltage switching (ZVS). Under lightload conditions, the devices reduce the switching frequency (frequency foldback) to ...
ADS809 analog-to-digital converter with large input pulse signal
... edge and the detailed timing between the step signal and The differential analog input of the ADS809 was a pulse the ADS809 sampling clock should be carefully measured, from the pulse generator with a frequency of 3.3 MHz and including the ADS809 aperture time. an amplitude of 2.92 to 2.08 V (high t ...
... edge and the detailed timing between the step signal and The differential analog input of the ADS809 was a pulse the ADS809 sampling clock should be carefully measured, from the pulse generator with a frequency of 3.3 MHz and including the ADS809 aperture time. an amplitude of 2.92 to 2.08 V (high t ...
TPS61060 数据资料 dataSheet 下载
... allow for the use of small external components and to simplify possible EMI problems. The device comes with three different overvoltage protection thresholds (14 V/18 V/23 V) to allow inexpensive and small-output capacitors with lower voltage ratings. The LED current is initially set with the extern ...
... allow for the use of small external components and to simplify possible EMI problems. The device comes with three different overvoltage protection thresholds (14 V/18 V/23 V) to allow inexpensive and small-output capacitors with lower voltage ratings. The LED current is initially set with the extern ...
FETs You know how to make a NOT gate and a NAND gate using
... want to have as low RDSon resistance as possible. You can sort the table to view the lowest resistance on top. The best transistor has RDSon = 1.9mΩ but it costs 41dkk. The worst transistor has RDSon = 9Ω. At this resistance we will loose 9W of power. TO-220 can dissipate safely around one watt of p ...
... want to have as low RDSon resistance as possible. You can sort the table to view the lowest resistance on top. The best transistor has RDSon = 1.9mΩ but it costs 41dkk. The worst transistor has RDSon = 9Ω. At this resistance we will loose 9W of power. TO-220 can dissipate safely around one watt of p ...
PHY104 Lab 7: Kirchoff`s Rules
... Note that our choice of direction of current in and out of the junction is arbitrary. We have no a priori knowledge of which direction the current flows and so we simply arbitrarily assume a direction. The signature of our answers (as we shall see) will inform us about whether or not our original ch ...
... Note that our choice of direction of current in and out of the junction is arbitrary. We have no a priori knowledge of which direction the current flows and so we simply arbitrarily assume a direction. The signature of our answers (as we shall see) will inform us about whether or not our original ch ...
Integrated Circuit True RMS-to-DC Converter AD536A
... voltages; these ranges are shown in Figure 21 and Figure 22. The AD536A can also be used in an unbuffered voltage output mode by disconnecting the input to the buffer. The output then appears unbuffered across the 25 kΩ resistor. The buffer amplifier can then be used for other purposes. Further, the ...
... voltages; these ranges are shown in Figure 21 and Figure 22. The AD536A can also be used in an unbuffered voltage output mode by disconnecting the input to the buffer. The output then appears unbuffered across the 25 kΩ resistor. The buffer amplifier can then be used for other purposes. Further, the ...
EECE 1101 Lab Manual
... 4. After switching power off, discharge any capacitors that were in the circuit. Do not trust supposedly discharged capacitors. Certain types of capacitors can build up a residual charge after being discharged. Use a shorting bar across the capacitor, and keep it connected until ready for use. If y ...
... 4. After switching power off, discharge any capacitors that were in the circuit. Do not trust supposedly discharged capacitors. Certain types of capacitors can build up a residual charge after being discharged. Use a shorting bar across the capacitor, and keep it connected until ready for use. If y ...
BD99010EFV-M
... the output power transistors. At very low input voltages the duty cycle can become 1 indicating the high-side power transistor continuously in on-state. At very high input voltages the duty cycle becomes very small but limited at an on-time of about 200ns. It should be noted that at high oscillation ...
... the output power transistors. At very low input voltages the duty cycle can become 1 indicating the high-side power transistor continuously in on-state. At very high input voltages the duty cycle becomes very small but limited at an on-time of about 200ns. It should be noted that at high oscillation ...
FSL126MR Green Mode Fairchild Power Switch (FPS™) Features
... attained. If the output consumes more than this maximum power, the output voltage (VO) decreases below its rating voltage. This reduces the current through the opto-coupler LED, which also reduces the opto-coupler transistor current, thus increasing the feedback voltage (VFB). If VFB exceeds 2.4V, t ...
... attained. If the output consumes more than this maximum power, the output voltage (VO) decreases below its rating voltage. This reduces the current through the opto-coupler LED, which also reduces the opto-coupler transistor current, thus increasing the feedback voltage (VFB). If VFB exceeds 2.4V, t ...
PCA9306 - Texas Instruments
... operates without use of a direction pin. The voltage supply range for VREF1 is 1.2 V to 3.3 V and the supply range for VREF2 is 1.8 V to 5.5 V. The PCA9306 device can also be used to run two buses, one at 400-kHz operating frequency and the other at 100-kHz operating frequency. If the two buses are ...
... operates without use of a direction pin. The voltage supply range for VREF1 is 1.2 V to 3.3 V and the supply range for VREF2 is 1.8 V to 5.5 V. The PCA9306 device can also be used to run two buses, one at 400-kHz operating frequency and the other at 100-kHz operating frequency. If the two buses are ...
Integrating ADC
An integrating ADC is a type of analog-to-digital converter that converts an unknown input voltage into a digital representation through the use of an integrator. In its most basic implementation, the unknown input voltage is applied to the input of the integrator and allowed to ramp for a fixed time period (the run-up period). Then a known reference voltage of opposite polarity is applied to the integrator and is allowed to ramp until the integrator output returns to zero (the run-down period). The input voltage is computed as a function of the reference voltage, the constant run-up time period, and the measured run-down time period. The run-down time measurement is usually made in units of the converter's clock, so longer integration times allow for higher resolutions. Likewise, the speed of the converter can be improved by sacrificing resolution.Converters of this type can achieve high resolution, but often do so at the expense of speed. For this reason, these converters are not found in audio or signal processing applications. Their use is typically limited to digital voltmeters and other instruments requiring highly accurate measurements.