FDMS2380 Fairchild Semiconductor, FDMS2380 Datasheet
FDMS2380
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FDMS2380 Summary of contents
Page 1
... INB DIAG ©2007 Fairchild Semiconductor Corporation FDMS2380 Rev. A General Description The FDMS2380 is an intelligent low side driver with built in recirculation specifically for driving inductive loads. 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 ...
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... Pin Assignment Pin Description QFN Pin Pin Name 1, 3, 14, 18, pad OUT2 2 4, 13, pad V BATT 5, 9, 10, 12, pad OUT1 FDMS2380 Rev. A OUT2 GND2 OUT2 OUT2 BATT BATT 13 4 OUT1 12 5 DIAG1 6 OUT1 INB1 11 7 INA1 8 OUT1 10 9 TOP VIEW OUT2 Power Driver Output (Ch2) ...
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... R is measured with 1.0 in copper on FR-4 board. R θJA 2. The FDMS2380 requires one or more high quality local bypass capacitors (i.e., low ESL, low ESR and located physically close to the VBATT/Ground terminals of the device) to prevent fast transients on the V with an amplitude passing through V BATT(ov) FDMS2380 Rev. A ...
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... Integrated protection functions, as described in this data sheet, are designed to prevent the destruction of the IC and these fault conditions are considered ‘outside’ the normal operating ranges important to note that the protection functions integrated into this device are NOT designed for continuous repetitive operation. FDMS2380 Rev 25° ...
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... Soft Short mode, is only switched on for a period of Tss by the FDMS2380. Regardless if the INA and INB signals remain in the Soft Short state for a longer period of time. Immediately prior to ...
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... The open load detection circuit does not alter the operation of the FDMS2380 and the PDMOS and NDMOS output transistors will be driven into the operational modes the battery supply commanded by the INA and INB inputs ...
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... INB DIAG OUT Voltage I OUT(Trip) I OUT Load Current Excitation FDMS2380 Rev 25°C unless otherwise noted C Recirculation Excitation Figure 1. Normal Operation μs protection fault signal Protection Recirculation NDMOS turned off & PDMOS on -- forces device into Recirculation mode to dissipate the inductive energy. Operates in Recirculation mode for as long as INA is high NDMOS can not turn back on until rising edge of INA Figure 2 ...
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... Voltage I OUT Load Current NDMOS turned off & PDMOS on Excitation to force device into Recirculation FDMS2380 Rev 25°C unless otherwise noted C protection fault signal Protection Recirculation NDMOS turned off & PDMOS on -- forces device into Recirculation mode to dissipate the inductive energy. Operates in Recirculation mode for as long as INA is high NDMOS can not turn back on until rising edge of INA Figure 3 ...
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... I OUT(ol) Threshold Excitation INA INB DIAG V BATT V BATT(uv) Goes into Standby mode - PDMOS & NDMOS turned off FDMS2380 Rev 25°C unless otherwise noted C latched low on falling edge of INB reset on falling edge of INA Open load condition I < I OUT OUT(ol) Recirculation Figure 5. Intermittent Open Load protection fault signal Exits Standby mode & ...
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... Energy vs Inductance 150 INDUCTANCE (mH) Figure 9. Self Clamped Inductive Switching Current vs Inductance 20 10 STARTING TIME IN CLAMP (ms) CLP Figure 11. Self Clamped Inductive Switching Current vs Time in Clamp FDMS2380 Rev 25°C unless otherwise noted C 220 Single Pulse V 200 180 160 140 150 C 120 J 100 ...
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... CASE TEMPERATURE ( C Figure 15. Recirculation Path Saturation Voltage vs Case Temperature 700 INA V = Falling Edge INB 600 500 400 300 - CASE TEMPERATURE ( C Figure 17. Open Load Detect Current vs Case Temperature FDMS2380 Rev. A (Continued 25°C unless otherwise noted BATT V INA 12 V INB 0.6 80 120 160 o C) Figure 14 ...
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... Maximum Ratings section. The FDMS2380 ground pins GND1 and GND2 are fully isolated; therefore, they are normally connected together on the PCB. When designing the PCB for the FDMS2380 the user needs to provide as low a thermal impedance as is possible for both the V and OUT[1,2] paddles on the bottom of the package. The power density in the dual integrated solenoid driver can ...
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... Component Rotation (Side Sectional View) Reel Dimensions: Dim A max 13” Diameter Option Reel Tape Size Dim A Dim B Option 13.00 0.079 24 mm 13” Dia 330 FDMS2380 Rev. A User Direction of Feed Dimensions are in millimeter 1.50 1.50 1.75 22.25 11 ...
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... Physical Dimensions FDMS2380 Rev www.fairchildsemi.com ...
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... TRADEMARKS The following are registered and unregistered trademarks and service marks Fairchild Semiconductor owns or is authorized to use and is not intended exhaustive list of all such trademarks. ® ACEx Green FPS™ Build it Now™ Green FPS™ e-Series™ CorePLUS™ GTO™ ...