Texas Instruments SLVP089 manual Inductor and Output Ripple

Page 17

Test Results

Figure 1–8. Inductor and Output Ripple

	VCC = 12 V	Inductor
	IO = 1.5 A	Inductor
	IO = 1.5 A	Ripple
		Ripple
		1 A/Div
		1–DC
		Output
		Ripple
		20 mV/Div
		2–AC
		2 ∝ s/Div

Hardware1-9

Image 17

Contents User’s Guide 07/98 Literature Number SLVU001A July Important Notice About This Manual Read This FirstTrademarks Contents Tables FiguresTopic HardwareTypical Synchronous Buck Converter IntroductionSchematic Diagram SchematicInput/Output Connections Power SupplyShows the SLVP089 board layout Board LayoutBill of Materials Bill of MaterialsLoad Regulation and Ripple, 3.3-V 9-V Input Test ResultsPower Switch Turn-On and Delay from Q2 Off Inductor and Output Ripple Page Design Procedure Introduction Operating Specifications Operating SpecificationsDuty Cycle Estimate Design Procedures+ 3 W Controller Functions + DD V O Compensation Network Bode Plot