NCP3418(2004) Просмотр технического описания (PDF) - ON Semiconductor

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производитель

NCP3418
(Rev.:2004)

Dual Bootstrapped 12 V MOSFET Driver with Output Disable

ON Semiconductor 

NCP3418, NCP3418A

VCC

4

Not present in

the NCP3418A

1 BST

IN 2

−

4V

+

OD 3

Nonoverlap

−

+

1.5 V

8 DRVH

100 k

7 SW

5 DRVL

120 k

6 PGND

Figure 1. NCP3418/A Block Diagram

PIN DESCRIPTION

Pin

Symbol

Description

1

BST

Upper MOSFET Floating Bootstrap Supply. A capacitor connected between BST and SW pins holds this

bootstrap voltage for the high−side MOSFET as it is switched. The recommended capacitor value is between

100 nF and 1.0 mF. An external diode will be needed with the NCP3418A.

2

IN

Logic−Level Input. This pin has primary control of the drive outputs.

3

OD

Output Disable. When low, normal operation is disabled forcing DRVH and DRVL low.

4

VCC

Input Supply. A 1.0 mF ceramic capacitor should be connected from this pin to PGND.

5

DRVL

Output drive for the lower MOSFET.

6

PGND Power Ground. Should be closely connected to the source of the lower MOSFET.

7

SW

Switch Node. Connect to the source of the upper MOSFET.

8

DRVH Output drive for the upper MOSFET.

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