System Spec Goals My LDOTexas Instruments TLV1171 Minimum Drop Out1.0 V0.455 V Required Capacitance1...

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Transcript of System Spec Goals My LDOTexas Instruments TLV1171 Minimum Drop Out1.0 V0.455 V Required Capacitance1...

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System Spec GoalsMy LDOTexas Instruments TLV1171Minimum Drop Out1.0 V0.455 VRequired Capacitance1 pF1 FPos. Settling Time10 nano sec~ 5 secNeg. Settling Time8 nano sec~ 5 secPos. Slew Rate100 V / sec5V / secNeg. Slew Rate166 V / sec5V / secQuiescent PWR Loss2.5 mW0.2 mWArea0.33 mm2>> 1.0 mm2Max. Input5.3 Volts 5.5 VoltsMin. Input4.7 Volts 2 VoltsMax Output Current8 mA1.0 ATemperature Range for Vout 200 mV10C to 45C-55C to 150C

0.51 mm0.66 mm

First Control System Attempt: PIDKP

+-+++GateDriveVoutHVref

PID: Great Results, But Too Large

Reduce to P: Small Enough to Fab

LDORegulator5.0 Volt VIN1.3 Volt VREFGNDVOUTGND

Layout FloorplanVIN RAILGND RAILVOUT RAILOP AMP 1OP AMP 2Power MOSFETCommon CentroidPrecision Resistors250 m20 m20 m200 m200 m70 m0.47 mm0.29 mm

Common Centroid PlanOp AmpsInvertingAmplifierDifferentialAmplifierFeedbackDividerCommon centroidalready completedin homework 4R1: 1 kR2: 2 k

Unit Resistorfor commoncentroid:1 kR1: 10 kR2: 10 kR3: 10 kR4: 10 k

Unit Resistorfor commoncentroid:5 kR1: 20 kR2: 20 k

Unit Resistorfor commoncentroid:10 k