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Test Setup

5.3 List of Test Points

Table 2. Test Point Functional Descriptions

TEST POINT NAME DESCRIPTION

TP1 VIN Input voltage positive sense point, reference to TP2

TP2 GND Input voltage negative sense point, reference for TP1

TP3 VSNS Remote sense +, reference to TP4

TP4 GSNS Remote sense -, reference for TP3

TP5 BOOT1 Boot strap supply for channel 1 high side FET, reference to TP11

TP6 HDRV1 Gate drive output for channel 1 high side FET, reference to TP11

TP7 +VOUT Output voltage sense for channel 2, reference to TP22

TP8 +VOUT Output voltage sense for channel 1, reference to TP20

TP9 SW1 Output 1 switch node, reference to TP11

TP10 LDRV1 Gate drive output for channel 1 low side FET, reference to TP11

TP11 PGND1 Power ground for channel 1

TP12 RT Oscillator test point, reference to TP2

TP13 EN1/SS1 Enable and soft start, reference to TP2

TP14 FB1 Inverting input to error amplifier, reference to TP15

TP15 AGND Analog ground

TP16 PGND2 Power ground for channel 2

TP17 COMP Error amplifier output, reference to TP15

TP18 LDRV2 Gate drive output for channel 2 low side FET, reference to TP16

TP19 SW2 Output 2 switch node, reference to TP16

TP20 RTN VOUT RTN, reference for TP8

TP21 HDRV2 Gate drive output for channel 2 high side FET, reference to TP16

TP22 RTN VOUT RTN, reference for TP7

TP23 BOOT2 Boot strap supply for channel 2 high side FET, reference to TP16

TP24 +VOUT Test pad for power stage efficiency measurement, reference to TP16

TP25 VIN Test pad for power stage efficiency measurement, reference to TP16

TP26 +VOUT Test pad for power stage efficiency measurement, reference to TP11

TP27 VIN Test pad for power stage efficiency measurement, reference to TP11

CHA CHA Output loop injection point, reference to TP15

CHB CHB Output loop injection point, reference to TP15

SLUU926–May 2012 Dual-Phase, Single-Output, Synchronous Buck Converter

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