Data Sheet rev 0.2

IRCS2277S

www.irf.com

page

2/20

May 5

Table of contents

INTRODUCTION ...............................................................................................................................................1

Table of contents............................................................................................................................................2

Table of figures ..............................................................................................................................................2

The IR2277S ..................................................................................................................................................3

The stacked structure of HVIC demo boards.................................................................................................3

Important Notice.............................................................................................................................................3

BOARD CONNECTORS...................................................................................................................................4

Connection with the system controller ...........................................................................................................4

Connecting the current sensors .....................................................................................................................6

Test Points .....................................................................................................................................................6

TEST BENCH CONNECTION ..........................................................................................................................7

OPERATING DESCRIPTION............................................................................................................................8

Normal operating mode .................................................................................................................................8

Precharge of the bootstrapped sections ........................................................................................................8

BOARD CUSTOMIZATION...............................................................................................................................8

Bootstrap circuit .............................................................................................................................................8

G0 and G1 selection ......................................................................................................................................9

OTHER EXTRA COMPONENTS ......................................................................................................................9

Clamping Diode for Vs below ground ............................................................................................................9

Analog output OUT ......................................................................................................................................11

Auto-reset function.......................................................................................................................................11

BILL OF MATERIAL .......................................................................................................................................12

LAYOUT ..........................................................................................................................................................14

Table of figures

Figure 1: BOTTOM and TOP image with connectors........................................................................................4

Figure 2: LED connection ..................................................................................................................................5

Figure 3: Test bench connection .......................................................................................................................7

Figure 4: Bootstrap circuit..................................................................................................................................8

Figure 5: undershoot clamp...............................................................................................................................9

Figure 6: Vin filter.............................................................................................................................................10