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Higher EE teacher notes (8.4MB Word)
Higher EE teacher notes (8.4MB Word)

... level rises, output voltage increases. ...
FDS6984AS Dual Notebook Power Supply N-Channel PowerTrench SyncFET
FDS6984AS Dual Notebook Power Supply N-Channel PowerTrench SyncFET

... VDS = VGS, ID = 1 mA VDS = VGS, ID = 250 µA ID = 1 mA, Referenced to 25°C ID = 250 uA, Referenced to 25°C VGS = 10 V, ID = 8.5 A VGS = 10 V, ID = 8.5 A, TJ = 125°C VGS = 4.5 V, ID = 7 A VGS = 10 V, ID = 5.5 A VGS = 10 V, ID = 5.5 A, TJ = 125°C VGS = 4.5 V, ID = 4.6 A VGS = 10 V, VDS = 5 V ...
FAN6224 Synchronous Rectification Controller for Flyback and Forward Freewheeling Rectification
FAN6224 Synchronous Rectification Controller for Flyback and Forward Freewheeling Rectification

... voltage (VOUT), respectively; so VIN/n, tPM.ON, and VOUT can be obtained. As a result, tL,DIS, which is the on-time of SR MOSFET, can be predicted by Equation 1. As shown in Figure 25, the SR MOSFET is turned on when the SR MOSFET body diode starts conducting and DET voltage drops to zero. The SR MO ...
AN3009 Application note Introduction
AN3009 Application note Introduction

... power, transition mode operation involves higher peak currents. This, also consistently with cost considerations, suggests its use in a lower power range (typically up to 250 W), while the former is recommended for higher power levels. To conclude, FF PWM is not the only alternative when continuous ...
100-V to 450-V DC, 5-W, 80% Efficiency at 1 W, Auxiliary Supply
100-V to 450-V DC, 5-W, 80% Efficiency at 1 W, Auxiliary Supply

... The TIDA-00708 is a 5-W, multiple output, auxiliary power supply designed for use in power converters targeted for applications in industrial, server, telecom, and consumer systems. This reference design is a flyback converter implemented using the UCC28881, which integrates the controller, a 700-V ...
The A.U.M. Device (pronounced “Ohm”)
The A.U.M. Device (pronounced “Ohm”)

...  Must detect up to 20 feet  Must be able to detect if people are present in the room  Be able to set length of time for system shut down  For this design we chose PIR sensor ...
ISL9R460PF2 4 A, 600 V, STEALTH Diode —
ISL9R460PF2 4 A, 600 V, STEALTH Diode —

... STEALTH™ family exhibits low reverse recovery current (Irr) and exceptionally soft recovery under typical operating conditions. This device is intended for use as a free wheeling or boost diode in power supplies and other power switching applications. The low Irr and short ta phase reduce loss in sw ...
iC-NVH 6-bit Sin/D Flash Converter - iC-Haus
iC-NVH 6-bit Sin/D Flash Converter - iC-Haus

... This specification is for a newly developed product. iC-Haus therefore reserves the right to change or update, without notice, any information contained herein, design and specification; and to discontinue or limit production or distribution of any product versions. Please contact iC-Haus to ascerta ...
ISL9K460P3 8 A, 600 V, STEALTH II Diode —
ISL9K460P3 8 A, 600 V, STEALTH II Diode —

... applications. The STEALTH™ family exhibits low reverse recovery current (Irr) and exceptionally soft recovery under typical operating conditions. This device is intended for use as a free wheeling or boost diode in power supplies and other power switching applications. The low Irr and short ta phase ...
MAX847 1-Cell, Step-Up Two-Way Pager System IC ________________General Description
MAX847 1-Cell, Step-Up Two-Way Pager System IC ________________General Description

... Current into NICD pin when BATT and OUT are both at 0V. This test guarantees that NICD won’t draw significant current when the main battery is removed and backup is not activated. Serial-interface timing specifications are not tested and are provided for design guidance only. Serial-interface functi ...
a High Speed, Low Noise Quad Operational Amplifier OP471
a High Speed, Low Noise Quad Operational Amplifier OP471

... From Figures 4 and 5, it can be seen that to reduce total noise, source resistance must be kept to a minimum. In applications with a high source resistance, the OP400, with lower current noise than the OP471, will provide lower total noise. ...
PAM2861 Description Pin Assignments
PAM2861 Description Pin Assignments

... The table below gives values of nominal average output current for several preferred values of current setting resistor (RS) in the typical application circuit shown on page 1. Nominal Average Output Current (mA) ...
ADA4861-3
ADA4861-3

... the die. At approximately 150°C, which is the glass transition temperature, the plastic changes its properties. Even temporarily exceeding this temperature limit can change the stresses that the package exerts on the die, permanently shifting the parametric performance of the amplifiers. Exceeding a ...
Downloadable Full Text - DSpace@MIT
Downloadable Full Text - DSpace@MIT

... the corresponding switching frequency is evaluated using the steady-state relationship between the switching frequency and the magnitude of the tank current. The main uncertainty in the operation of a series resonant dc/dc converter is the dc load that is modeled as a resistance ...
TLV2402
TLV2402

... The low supply current is coupled with extremely low input bias currents enabling them to be used with mega-Ω resistors making them ideal for portable, long active life, applications. DC accuracy is ensured with a low typical offset voltage as low as 390 µV, CMRR of 120 dB and minimum open loop gain ...
PSU_Part3_PFC - Renesas e
PSU_Part3_PFC - Renesas e

RB495D
RB495D

Dual, Low-Power, High-Speed, Fixed-Gain
Dual, Low-Power, High-Speed, Fixed-Gain

BDTIC
BDTIC

... Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Inf ...
AP1184 General Description Features
AP1184 General Description Features

... motherboard with an ATX style power supply that provides 5V and 3.3V to the board. One such application is the new graphic chip sets that require anywhere from 2.4V to 2.7V supply. The AP1184 can easily be programmed with the addition of two external resistors to any voltages within the range of 1.2 ...
A PASSIVE DAMPING NETWORK FOR SINGLE PHASE MATRIX
A PASSIVE DAMPING NETWORK FOR SINGLE PHASE MATRIX

FPF2300/02/03 Dual-Output Current Limit Switch F P
FPF2300/02/03 Dual-Output Current Limit Switch F P

... lockout), and thermal shutdown protection per each switch. In the event of an over-current condition, the load switch limits the load to current limit value. The minimum current limit is set to 1100mA. ...
Notes and Solved Problems on Time Dependent Circuits
Notes and Solved Problems on Time Dependent Circuits

... be charged. Suppose we connect the charged capacitor with charge Q to the inductor. Then, there will be charge oscillations in the RLC circuit. Since the resistor is present, the charge oscillations will NOT continue infinitely long but will decay with time. Application of the Kirchoff loop equation ...
14-Bit, 210 MSPS TxDAC D/A Converter AD9744
14-Bit, 210 MSPS TxDAC D/A Converter AD9744

... ac and dc performance while supporting update rates up to 210 MSPS. The AD9744’s low power dissipation makes it well suited for portable and low power applications. Its power dissipation can be further reduced to a mere 60 mW with a slight degradation in performance by lowering the full-scale curren ...
Chaper 4
Chaper 4

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Current mirror

A current mirror is a circuit designed to copy a current through one active device by controlling the current in another active device of a circuit, keeping the output current constant regardless of loading. The current being 'copied' can be, and sometimes is, a varying signal current. Conceptually, an ideal current mirror is simply an ideal inverting current amplifier that reverses the current direction as well or it is a current-controlled current source (CCCS). The current mirror is used to provide bias currents and active loads to circuits. It can also be used to model a more realistic current source (since ideal current sources don't exist).The circuit topology covered here is one that appears in many monolithic ICs. It is a Widlar mirror without an emitter degeneration resistor in the follower (output) transistor. This topology can only be done in an IC as the matching has to be extremely close and cannot be achieved with discretes.Another topology is the Wilson mirror. The Wilson mirror solves the Early effect voltage problem in his design.
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