Analog Circuit Design Volume Three: Design Note Collection by Bob Dobkin, John Hamburger
By Bob Dobkin, John Hamburger
Design be aware Collection, the 3rd e-book within the Analog Circuit Design series, is a complete quantity of utilized circuit layout ideas, delivering dependent and sensible layout suggestions. layout Notes during this quantity are targeted circuit motives, simply utilized on your personal designs. This e-book contains an in depth strength administration part, overlaying switching regulator layout, linear regulator layout, microprocessor strength layout, battery administration, powering LED lighting fixtures, automobile and business strength layout. different sections span a variety of analog layout themes, together with facts conversion, facts acquisition, communications interface layout, operational amplifier layout recommendations, clear out layout, and instant, RF, communications and community layout. no matter what your program -industrial, clinical, safety, embedded structures, instrumentation, automobile, communications infrastructure, satellite tv for pc and radar, desktops or networking; this ebook will supply sensible layout ideas, constructed by way of specialists for tackling the demanding situations of strength administration, info conversion, sign conditioning and wireless/RF analog circuit design.
- A wealthy number of utilized analog circuit layout strategies to be used on your personal designs.
- Each layout be aware is gifted in a concise, two-page layout, making it effortless to learn and assimilate.
- Contributions from the top lighting in analog layout, together with Bob Dobkin, Jim Williams, George Erdi and Carl Nelson, between others.
- Extensive sections protecting strength administration, information conversion, sign conditioning, and wireless/RF.
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Inductor DCR autocalibration The problem with conventional inductor DCR current sensing is that the tolerance of the DCR can be as large as ±10%, greatly limiting the current read back accuracy. To solve this With this autocalibration method, the output current read back accuracy is within 3% regardless of inductor DCR tolerance. LTpowerPlay GUI All power system management functions can be controlled by LTpowerPlay, a PC-based graphical user interface compatible with all of Linear’s power system management products.
For the full load to minimum load transient, the output voltage starts 45mV low, rises 75mV to 35mV above nominal, and settles to 45mV above nominal. 2b). Now reduce the number of output capacitors from eight to six. The ESR = 5mΩ and ESL = 500pH. The transient voltage step is now (5mΩ · 10A) + (500pH · 100A/μs) = 100mV. 2c). The initial specification has been easily met with a 25% reduction in output capacitors. An added benefit of voltage positioning is an incremental reduction in CPU power dissipation.
In a non-AVP implementation, RA1 and RA2 are removed and CC and RC installed. 1a. In order to implement voltage positioning, we will control the error amplifier gain at the ITH pin. The internal gm amplifier gain is equal to gm · RO, where gm is the transconductance in mmhos, and RO is the output impedance in kohms. 2V = half load, and 2V = full load in this application. 3mmho. 2V from the 5V INTVCC, the gain can be limited without affecting the nominal DC set point at half load. The Thevenin equivalent resistance is seen to be in parallel with the amplifiers RO.