FAN7093 데이터 시트보기 (PDF) - Fairchild Semiconductor

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FAN7093

High-Current PN Half-Bridge Driver

Fairchild Semiconductor 

Pin Configuration

Figure 3. Pin Assignments

Pin Definitions

Pin Symbol I/O

Function

1

GND(1)

Ground

2

IN

I Input. Defines whether the high-side (HS) or low-side (LS) switch is activated.

3

/INH

4, 8

OUT(1)

I

Inhibit. When set to LOW, the device enters Sleep Mode and resets Over-

Temperature Protection (OTP) and the HS and LS short latch.

O Power output of the bridge

5

SR

I

Slew rate. The slew rate of the power switches can be adjusted by connecting a

resistor between the SR and GND pins.

6

IS

O Current sense and diagnostics

7

VBATT(1)

Supply

Note:

1. This pin needs power wiring.

Table 1. Truth Table

Device State

/INH IN HS LS IS

Mode

LOW

X

OFF OFF LOW Standby Mode

Normal Operation

HIGH LOW OFF ON

CS LS Active

HIGH HIGH ON OFF CS HS Active

Over-Voltage

IOUT ≤ ICP

Over-Voltage

IOUT > ICP

X

X

ON OFF HIGH Shutdown of LS, HS Activated, Error Detected

Shutdown of LS, HS Error Detected

X

X

OFF OFF HIGH Reset with /INH HIGH to LOW to HIGH when

condition no longer exists

Under-Voltage

X

X

OFF OFF LOW UV Lockout

Over-Temperature or

Shorted LS or HS

LOW

X

OFF OFF LOW Standby Mode, Reset of Latch

Over-Temperature

or Shorted LS or HS

Current Limit

HIGH X

HIGH HIGH

HIGH LOW

OFF

OFF

ON

OFF

ON

OFF

HIGH Shutdown with Latch, Error Detected

HIGH Switched Mode, Error Detected(2)

HIGH Switched Mode, Error Detected(2)

Notes:

2. Device resumes normal operation after tCLS. The error signal is reset after 2 x tCLS.

3. X=Don’t care input and CS=Current Sense Mode status flag.

© 2010 Fairchild Semiconductor Corporation

FAN7093 • Rev. 1.0.6

3

www.fairchildsemi.com

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