L99SD01-E

L99SD01-E Integrated solenoid driver for automotive applications Datasheet - production data Description The L99SD01-E is a device intended for driving inductive loads such as Compressed Natural Gas (CNG) injectors. The inputs are CMOS-compatible. The diagnostic * 3*&)7 outputs CLAMP FLAG and FAULT provide an indication of demagnetization mode and fault PowerSSO-36 conditions, respectively. 2 The integrated standard serial interface (I C) Features allows to digitally set peak and hold current values and other injection parameters. It also Automotive qualified provides detailed diagnostic information. The Excitation switch S =60m device should work with pre-programmed peak 1 and hold current values when values are not set Recirculation switch S =60m 2 by external micro. All injection parameters can be CMOS compatible inputs changed during operating conditions and taken Load current up to 14 A into account at the first injection rising edge after the end of communication. Diagnostic information Integrated clamp structure is available in case of overcurrent, clamp voltage = 45 V (minimum) Switch S 1 overtemperature, overvoltage and open-load. Current sense amplifier with internal sense resistor S switch PWM operation above 10 KHz 1 2 I C standard interface for mode control and enhanced diagnostic Diagnostic output: Open drain fault detection Flag of clamp activation at the end of injection cycle Input for voltage monitoring and feedback Thermal shutdown and warning Overcurrent shutdown and diagnostic Undervoltage and overvoltage detection Table 1. Device summary Open-load detection Order codes Package Tube Tape and reel PowerSSO-36 L99SD01-E L99SD01TR-E December 2014 DocID022573 Rev 5 1/46 This is information on a product in full production. www.st.comContents L99SD01-E Contents 1 Block diagram and pin description . 6 2 Injection cycle description 9 2.1 Phase 1 10 2.2 Phase 2 10 2.3 Phase 3 10 2.4 Phase 4 10 2.5 Phase 5 .11 3 Diagnostic 14 2 4I C protocol description . 17 4.1 SDA and SCL signals 17 4.2 Data validity . 17 4.3 START and STOP conditions 18 4.4 Byte format 18 4.5 Acknowledge (ACK) and Not Acknowledge (NACK) 19 4.6 Device addressing 19 4.7 Write operation . 20 4.8 Read operation . 21 4.9 Registers Addresses and Fault register 22 5 Register description 24 5.1 Register A . 24 5.2 Register B . 24 5.3 Register C 24 5.4 Register D 25 5.5 Register E . 25 5.6 Register F . 26 5.7 Register G 26 5.8 Register H 26 5.9 Fault register 27 2/46 DocID022573 Rev 5