Texas Instruments SLVP089 manual Power Switch Turn-On and Delay from Q2 Off

Page 16

Test Results

Figure 1–6. Power Switch Turn-On and Delay from Q2 Off

VCC = 12 V

IO = 1.5 A

Q1 DRAIN

5 V/DIV

1

Q2 GATE

5 V/DIV

2

20 ns/Div

Figure 1–7. Power Switch Turn-Off and Delay to Q2 On

VCC = 12 V

IO = 1.5 A

Q1 Drain

5 V/Div

1

Q2 Gate

5 V/Div

2

20 ns/Div

1-8

Image 16

Contents User’s Guide 07/98 Literature Number SLVU001A July Important Notice Read This First About This ManualTrademarks Contents Figures TablesHardware TopicIntroduction Typical Synchronous Buck ConverterSchematic Schematic DiagramPower Supply Input/Output ConnectionsBoard Layout Shows the SLVP089 board layoutBill of Materials Bill of MaterialsTest Results Load Regulation and Ripple, 3.3-V 9-V InputPower Switch Turn-On and Delay from Q2 Off Inductor and Output Ripple Page Design Procedure Introduction Operating Specifications Operating SpecificationsDesign Procedures Duty Cycle Estimate+ 3 W Controller Functions + DD V O Compensation Network Bode Plot