Document
FDMS2380 Dual Integrated Solenoid Driver
August 2007
FDMS2380
Dual Integrated Solenoid Driver Features
5A, 60V Load Clamp rDS(ON) = 30mΩ (Typ.) Excitation path 6V to 26V Operation CMOS Compatible Soft Short Detection Thermal Shutdown Diagnostic Output Integrated Clamps Over-current Protection Open Load Detection Over-voltage Protection
Pin 1
General Description
The FDMS2380 is an intelligent low side driver with built in recirculation and demagnetization circuits designed specifically for driving inductive loads. The inputs are CMOS compatible. A separate diagnostic signal for each channel provides the system with an indication of the operation of the solenoid or the presence of a protection fault condition. Built-in Over-voltage, Over-current, Overtemperature circuits protect the device from these conditions. Additional diagnostic circuitry is included for detecting Open Load, Under-voltage and output ground fault conditions. The FDMS2380 contains two independent intelligent low side solenoid drivers.
Applications
Transmission Solenoid Driver Inductive Load Management
Power QFN
Internal Logical Block Diagram (One of two Identical Channels)
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Volt Regulator & Over / Under Voltage Detect Soft Short & Recirculation INA Control Logic INB Over Temp Shutdown
VBATT
PDMOS Driver & Clamp
Power PDMOS Recirculation Device
OUT Open Load Detect
Power NDMOS
DIAG Diagnostic Control & Pulse Generation
Over Current Shutdown
NDMOS Driver
Excitation Device
GND
©2007 Fairchild Semiconductor Corporation FDMS2380 Rev. A
1
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FDMS2380 Dual Integrated Solenoid Driver
Pin Assignment
OUT2 GND2
1 18 17 2
OUT2 INA2 INB2 DIAG2 OUT2 VBATT OUT1 GND1 OUT1
OUT2
16 15
OUT2 VBATT OUT1 DIAG1 INB1 INA1 OUT1
3
14
4
VBATT
13
5 6 7 8 9
12
OUT1
11
10
TOP VIEW
Pin Description
QFN Pin 1, 3, 14, 18, pad OUT2 2 4, 13, pad VBATT 5, 9, 10, 12, pad OUT1 6 7 8 11 15 16 Pin Name OUT2 GND2 VBATT OUT1 DIAG1 INB1 INA1 GND1 DIAG2 INB2 INA2 Power Driver Output (Ch2) Ground (Ch2) Battery Supply Voltage. Battery supply is common to both channels Power Driver Output (Ch1) Diagnostic Flag (Ch1). Open drain output. Input Control Signal B (Ch1) Input Control Signal A (Ch1) Ground (Ch1) Diagnostic Flag (Ch2). Open drain output. Input Control Signal B (Ch2) Input Control Signal A (Ch2) Pin Description
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17
2 FDMS2380 Rev. A
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FDMS2380 Dual Integrated Solenoid Driver
Maximum Ratings TC = 25°C unless otherwise noted
Symbol IOUT(rev) VBATT(max) IIN VIN(max) IDIAG VDIAG(max) PD TJ, TSTG Parameter Maximum Reverse Output Current Maximum DC Supply Voltage (Note 2) Input Currents Maximum Input Voltage Diagnostic Output Current Maximum Diagnostic Output Voltage Total Power dissipation Power dissipation VBATT pad Power dissipation OUT pads: PD(OUT) = PD(OUT1) + PD(OUT2) Operating and Storage Temperature Ratings -4 60 10 8 10 8 7 2.3 4.6 -40 to 160 Units A V mA V mA V W W W
oC.