FAN7093_12 Datasheet, PDF (3/14 Pages) Fairchild Semiconductor – High-Current PN Half-Bridge Driver

Pin Configuration
Figure 3. Pin Assignments
Pin Definitions
Pin Symbol I/O
1
GND⁽¹⁾
Ground
Function
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
V_BATT(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
I_OUT ≤ I_CP
Over-Voltage
I_OUT > I_CP
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 t_CLS. The error signal is reset after 2 x t_CLS.
3. X=Don’t care input and CS=Current Sense Mode status flag.
© 2011 Fairchild Semiconductor Corporation
FAN7093 • Rev. 1.0.4
3
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