IR1176 データシートの表示（PDF） - International Rectifier

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IR1176

SYNCHRONOUS RECTIFIER DRIVER

International Rectifier 

IR1176

Lead Definitions and Assignments

Symbol Description

AVDD

Q1

Power - + 5 VDC to MOSFET drivers

Output - gate drive for Q1 power MOSFET

DTOUT1 Output - sets dead time for Q1 output - used with DTIN1

DTIN1 Input - sets dead time for Q1 - used with DTOUT1

RADV1 Output - sets lead time (advance) for Q1

VFLTR1 Output - PLL loop filter for Q1 output

RVCO1 Output - sets PLL center frequency for Q1 output

X1

Input - transformer input for Q1

VDD

Power - +5 Vdc for internal logic

UVSET Input - sets UVLO+ If this pin is pulled below 1.25VDC externally, then both Q1 and Q2

outputs will be at Vss (disabled)

RBIAS Output - connected to 34.0K +/- 1% resistor - sets operating current

AVSS Ground for MOSFET driver supply (VDD)

X2

Input - transformer input for Q2

RVCO2 Output - sets PLL center frequency for Q2 output

VFLTR2 Output - PLL loop filter for Q2

RADV2 Output - sets lead time (advance) for Q2

DTIN2 Input - sets dead time for Q2 - used with DTOUT2

DTOUT2 Output - sets dead time for Q2 - used with DTIN2

VSS

Ground for logic supply (AVDD)

Q2

Output - gate drive for Q2 power MOSFET

1 *VDD

2 Q1

3 DTOUT2

4 DTIN2

5 RADV1

6 VFLTRI

7 RVCO1

8 X1

9 AVDD

10UVSET

Q2 20

VSS 19

18 DTOUT1

17 DTIN1

16 RADV2

15 VFLTR2

14 RVCO2

X2 13

12 AVSS

11 RBIAS

IR1176S

(SSOP-20)

1 *VDD

2 Q1

3 DTOUT2

4 DTIN2

5 RADV1

6 VFLTRI

7 RVCO1

8 X1

9 AVDD

10UVSET

Q2 20

VSS 19

18 DTOUT1

17 DTIN1

16 RADV2

15 VFLTR2

14 RVCO2

X2 13

12 AVSS

11 RBIAS

IR1176SS

SOIC (wide body)

1 *VDD

2 Q1

3 DTOUT2

4 DTIN2

5 RADV1

6 VFLTRI

7 RVCO1

8 X1

9 AVDD

10UVSET

Q2 20

VSS 19

18 DTOUT1

17 DTIN1

16 RADV2

15 VFLTR2

14 RVCO2

X2 13

12 AVSS

11 RBIAS

IR1176

PDIP

4

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