* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Automotive Electronics Sensor Interface CY30 Automotive
Survey
Document related concepts
Stray voltage wikipedia , lookup
Immunity-aware programming wikipedia , lookup
Ground loop (electricity) wikipedia , lookup
Buck converter wikipedia , lookup
Pulse-width modulation wikipedia , lookup
Dynamic range compression wikipedia , lookup
Voltage optimisation wikipedia , lookup
Oscilloscope history wikipedia , lookup
Switched-mode power supply wikipedia , lookup
Analog-to-digital converter wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Mains electricity wikipedia , lookup
Transcript
Automotive Electronics Product Interface Sensor Information Sensor CY30 Interface – CY30 The integrated circuit CY30 contains an evaluation circuit for potential-free input signals of an inductive sensor. The circuit evaluates the negative zero crossing of the sensor signal. Sensor interface for an inductive engine wheel speed single rotation sensor Customer benefits: Excellent system know-how Smart concepts for system safety Secured supply Long- term availability of manufacturing processes and products QS9000 and ISO/TS16949 certified Features Differential input Single channel Two basic thresholds Amplitude-dependent part k-tracking possible adjustable factors Switching at negative zero crossing Glitch filtered open drain output with two Package : SOIC8 1 Block diagram Detailed description The inductive-sensor signal applied to DGP and DGN is raised by an internal voltage divider to a bias voltage of approximately 2.5 V. An internal clamp structure limits the voltage at DGP/ DGN between - 0.7 V and VDD5 + 0.7 V typically. The inductive sensor signal is then fed to the internal comparators. With a positive inductive sensor signal which exceeds the positive threshold, the output signal NBM is set to High (corresponds to preparing for the negative zero crossing). The analogue glitch filter suppresses short disturbance pulses smaller than 3µs. The NBM signal is reset to low at the negative zero crossing. Pin description Application example Pin Name Function 1 2 3 4 5 VDD5 DGP DGN GND NBM 6 CONF_K 7 8 CONF_TH AMP 5 V Supply voltage Positive input inductive sensor signal Negative input inductive sensor signal Ground Open drain output rotation speed signal Configuration pin for amplitude dependent part k factor Configuration pin for basic threshold Pin for amplitude dependent threshold tracking VDD5 AMP DGP CONF_TH DGN CONF_K GND NBM VDDx µC The resistor network is necessary for sensor adapting. Maximum ratings Parameter Min Max Unit Supply voltage Voltage resistance, all pins Current DGN, DGP Operating ambiente temperature Thermal resistance ESD HBM 100pF / 1.5k 4.5 -0.3 -20 -40 5.5 6 20 125 V V mA °C -2 160 +2 K/W kV 2 Chipset x Battery CY320 Sensor Sensor Sensor CAN µC System Supply µC Supply Sensor Supply Watchdog Reset CAN Driver ISO Interface Sleep/Wake ISO 8 8x e.g. LEDs CY100 2 _ + Fela ISO 18 Low Side Power Drivers e.g. Infineon TC1796 A/D RAM CAN Peripherals FLASH Valves CJ945 6x 6x 2x 4x 2A/70V 2A/45V 3A/45V 1A/45V x Relays x Inductivities x Resistors x _ + Fela CK240 Lamps x Ignition Drivers 8x 10 Bit A/D 5V Small Signal Out ISO Interface H-Bridge Concept FLASH CY30 CF173 RPM CAN CAN Driver CJ840 Direct Injection SMD085 Pressure Sensor CJ125 λ-Sensor Control Contact Robert Bosch GmbH Sales Semiconductors Postbox 13 42 72703 Reutlingen Germany Tel.: +49 7121 35-2979 Fax: +49 7121 35-2170 Robert Bosch Corporation Component Sales 38000 Hills Tech Drive Farmington Hills, MI 48331 USA Tel.: +1 248 876-7441 Fax: +1 248 848-2818 E-Mail: [email protected] Robert Bosch K.K. Component Sales 9-1, Ushikubo 3-chome Tsuzuki-ku, Yokohama 224 Japan Tel.: +81 45 9 12-83 01 Fax: +81 45 9 12-95 73 Internet: www.bosch-semiconductors.de © 02/2006 All rights reserved by Robert Bosch GmbH including the right to file industrial property rights Robert Bosch GmbH retains the sole powers of distribution, such as reproduction, copying and distribution. For any use of products outside the released application, specified environments or installation conditions no warranty shall apply and Bosch shall not be liable for such products or any damage caused by such products. 3