Automotive technology and body and power system solutions

With the increasing demand for car comfort and other aspects, the importance of electronic control and power of the body has become increasingly prominent, and more and more cars are beginning to be equipped with high-performance body control systems and advanced management systems. The addition and upgrade of such systems opens up a huge space for the application of semiconductor devices.

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However, in the face of environmental protection and the need to enrich the consumer experience, as well as the most stringent specifications of automotive devices, manufacturers must pay more attention to the certification of reliability indicators in the design and manufacture of products, on the other hand, Provide higher performance while complying with environmental protection and energy saving requirements. This article will combine the automotive technology expertise of ON Semiconductor with a discussion of the various components used in automotive body and powertrain solutions.

Advanced automotive technology

The increase in automotive electronics has made it impossible to avoid spurious signals in all parts of the car, and may even peak at 80 VV, which the car design team must take into account. Modules and components used in automobiles need to be able to withstand such peaks and ensure that they perform as they should. Using proven automotive technology capabilities, ON Semiconductor has developed a dedicated high-voltage automotive power technology that enables complex high-voltage system-on-chip (SoC) solutions to meet maximum voltage and digital gate integration requirements.

At the same time, more and more electronic content in automobiles is becoming more and more demanding on electromagnetic compatibility. Automobile manufacturers have also set corresponding performance standards, aiming to make the vehicle network (IVN) application have higher anti-ESD pulse and resistance. EMI capabilities. ON Semiconductor's innovative I3T50/I3T80 technology provides the best-in-class devices, enabling advanced features through deep trench isolation, while ensuring reliable design and reducing interference between different cell structures on the chip. .

A range of ON Semiconductor's technologies allow the use of power supplies up to 100V for component integration â€“ including embedded microprocessor cores. ON Semiconductor's automotive ASIC and Specialty Standard Products (ASSP) solutions are widely used in powertrains (including high temperature applications with ambient temperatures â‰¥150Â°C), safety, body, instrument panel, IVN, sensor and driver applications.

ON Semiconductor is a major supplier to the automotive MOSFET market. In addition to the planar MOSFET family, the company also offers 40 V and 60 V trench MOSFETs. Trench technology is optimized for low Rds((on)) switching applications and is more suitable for linear operating modes than planar technology.

ON Semiconductor body and convenience application solutions

Body electronics and convenience applications include climate control, smart junction boxes, headlamp adjustment and power control, wiper and light sensing, mirror control, seat position/heating/cooling, door modules, steering wheel sensors and more.

Here is an example of body heating, air conditioning (HVAC) control, communication and power, and DC motor drives.

1. Body HVAC control, communication and power supply

HVAC consists of multiple subsystems: one is the car heating and ventilation system, which draws fresh air from the external pipe into the cabin; the incoming air can be heated by a small heating core that is connected to the engine cooling system. Its purpose is to improve passenger comfort and safety. The second is the air conditioning and refrigeration system, which transfers the heat inside the vehicle to the circulating and condensed outside air to reduce the temperature and humidity of the air. The third is the control head, the ECU with the user interface ((electronic control unit).

Figure 1: HVAC block diagram

Figure 1 is a block diagram of the HVAC, and the green parts of the figure use various devices from ON Semiconductor. These devices include diodes and rectifiers for I/O protection; interfaces for transceivers or SBCs; IGBTs/FETs and MOSFETs for motor pre-drivers (BLDC, BDC); loads/relays for stepper motor drives Drivers and interfaces; bipolar transistors/digital transistors (BRTs) for control panels, interfaces, analog switches, standard logic, multiplexers; amplifiers and comparators for signal conditioning, operational amplifiers; for high-end drivers Drivers, load/relay drivers, IGBT/FETs and MOSFETs; diodes and rectifiers for power protection, small signal switching diodes, Zener diodes, Schottky diodes; interfaces for voltage regulation (linear, switching), DC DC (DC-DC) controllers, converters and regulators, controllers, linear regulators; DC-DC controllers, converters and regulators for monitoring; and loads for low-end drivers / Relay drivers, IGBT/FET and MOSFET.

2. Body HVAC DC Motor Driver

Currently, the most popular flap actuator is a simple DC motor that feeds position signals back to the microcontroller. In order to control the forward and reverse directions of the DC motor, two high-end power stages and two low-end power stages in a full-bridge configuration must be used. Typically, these drives integrate the required functions such as overvoltage, overload and overtemperature protection. In addition, the SPI interface provides diagnostics for the microcontroller.

The integrated pulse counting technology combined with an additional signal conditioning block can replace the discrete position potentiometer. In pulse counting applications, the circuit detects the commutation pulses of the DC motor and creates a pulse for each detected commutation pulse. Usually these pulses are fed back to the microcontroller for position detection and position control. ON Semiconductor's ASICs for this type of circuit have been put into production.

The six-way half-bridge driver NCV7708 is a flexible single-sided high/low-end driver. Its six high-end and low-end channels are dedicated to motor control configurations such as half-bridge or full-bridge. The NCV7708 can control five DC motors via a 16-bit SPI interface. The device can also control relays or indicators. Figure 2 is a functional block diagram of the device.

Figure 2: Functional Block Diagram of NCV7708

The three-way half-bridge driver NCV7703 can control two DC motors. The internal connection of the power stage is used as a half bridge, and devices in the SO-14 package can effectively reduce the number of pins. Figure 3 is a block diagram of the device.

Figure 3: Functional Block Diagram of NCV7703

3. Configurable motors, relays and LED drivers for body HVAC

The NCV7608 offers maximum flexibility to drive different types of motors and various loads such as light bulbs, LEDs and relays. The NCV7608 has a special diagnostic current disable bit that prevents LED illumination and standard diagnostics. Figure 4 is a functional block diagram of the NCV7608.

Figure 4: NCV7608 with maximum flexibility

The device is an 8-way configurable low-side/high-side driver in a high-density SOIC-28W package that operates from a junction temperature of -40Â°C to +150Â°C. With a wide input voltage range of 3.15 V to 5.25 V and an 8-channel fully independent output driver, the NCV7608 can be configured in any combination of high-end, low-side or half-bridge configurations, providing a flexible solution for designers who need to drive large loads. .

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Nominal Diameter		Outside Diameter		End to End
Nominal Diameter		D1*D2		End to End
DN	NPS	Series A	Series B	H
20Ã—15	3/4Ã—1/2	26.9Ã—21.3	25Ã—18	38
20Ã—10	3/4Ã—3/8	26.9Ã—17.3	25Ã—14	38
25Ã—20	1Ã—3/4	33.7Ã—26.9	32Ã—25	51
25Ã—15	1Ã—1/2	33.7Ã—21.3	32Ã—18	51
32Ã—25	1.1/4Ã—1	42.4Ã—33.7	38Ã—32	51
32Ã—20	1.1/4Ã—3/4	42.4Ã—26.9	38Ã—25	51
32Ã—15	1.1/4Ã—1/2	42.4Ã—21.3	38Ã—18	51
40Ã—32	1.1/2Ã—1.1/4	48.3Ã—42.4	45Ã—38	64
40Ã—25	1.1/2Ã—1	48.3Ã—33.7	45Ã—32	64
40Ã—20	1.1/2Ã—3/4	48.3Ã—26.9	45Ã—25	64
40Ã—15	1.1/2Ã—1/2	48.3Ã—21.3	45Ã—18	64
50Ã—40	2Ã—1.1/2	60.3Ã—48.3	57Ã—45	76
50Ã—32	2Ã—1.1/4	60.3Ã—42.4	57Ã—38	76
50Ã—25	2Ã—1	60.3Ã—33.7	57Ã—32	76
50Ã—20	2Ã—3/4	60.3Ã—26.9	57Ã—25	76
65Ã—50	2.1/2Ã—2	73.0Ã—60.3	76Ã—57	89
65Ã—40	2.1/2Ã—1.1/2	73.0Ã—48.3	76Ã—45	89
65Ã—32	2.1/2Ã—1.1/4	73.0Ã—42.4	76Ã—38	89
65Ã—25	2.1/2Ã—1	73.0Ã—33.7	76Ã—32	89
80Ã—65	3Ã—2.1/2	88.9Ã—73.0	89Ã—76	89
80Ã—50	3Ã—2	88.9Ã—60.3	89Ã—57	89
80Ã—40	3Ã—1.1/2	88.9Ã—48.3	89Ã—45	89
80Ã—32	3Ã—1.1/4	88.9Ã—42.4	89Ã—38	89
90Ã—80	3.1/2Ã—3	101.6Ã—88.9	â€“	102
90Ã—65	3.1/2Ã—2.1/2	101.6Ã—73.0	â€“	102
90Ã—50	3.1/2Ã—2	101.6Ã—60.3	â€“	102
90Ã—40	3.1/2Ã—1.1/2	101.6Ã—48.3	â€“	102
90Ã—32	3.1/2Ã—1.1/4	101.6Ã—42.4	â€“	102
100Ã—90	4Ã—3.1/2	114.3Ã—101.6	â€“	102
100Ã—80	4Ã—3	114.3Ã—88.9	108Ã—89	102
100Ã—65	4Ã—2.1/2	114.3Ã—73.0	108Ã—76	102
100Ã—50	4Ã—2	114.3Ã—60.3	108Ã—57	102
100Ã—40	4Ã—1.1/2	114.3Ã—48.3	108Ã—45	102
125Ã—100	5Ã—4	141.3Ã—114.3	133Ã—108	127
125Ã—90	5Ã—3.1/2	141.3Ã—101.6	â€“	127
125Ã—80	5Ã—3	141.3Ã—88.9	133Ã—89	127
125Ã—65	5Ã—2.1/2	141.3Ã—73.0	133Ã—76	127
125Ã—50	5Ã—2	141.3Ã—60.3	133Ã—57	127
150Ã—125	6Ã—5	168.3Ã—141.3	159Ã—133	140
150Ã—100	6Ã—5	168.3Ã—114.3	159Ã—108	140
150Ã—90	6Ã—3.1/2	168.3Ã—101.6	â€“	140
150Ã—80	6Ã—3	168.3Ã—88.9	159Ã—89	140
150Ã—65	6Ã—2.1/2	168.3Ã—73.0	159Ã—76	140
200Ã—150	8Ã—6	219.1Ã—168.3	219Ã—159	152
200Ã—125	8Ã—5	219.1Ã—141.3	219Ã—133	152
200Ã—100	8Ã—4	219.1Ã—114.3	219Ã—108	152
200Ã—90	8Ã—3.1/2	219.1Ã—101.6	â€“	152
250Ã—200	10Ã—8	273.0Ã—219.1	273Ã—219	178
250Ã—150	10Ã—6	273.0Ã—168.3	273Ã—159	178
250Ã—125	10Ã—5	273.0Ã—141.3	273Ã—133	178
250Ã—100	10Ã—4	273.0Ã—114.3	273Ã—108	178
300Ã—250	12Ã—10	323.9Ã—273.1	325Ã—273	203
300Ã—200	12Ã—8	323.9Ã—219.1	325Ã—219	203
300Ã—150	12Ã—6	323.9Ã—168.3	325Ã—159	203
300Ã—125	12Ã—5	323.9Ã—141.3	325Ã—133	203
350Ã—300	14Ã—12	355.6Ã—323.9	377Ã—325	330
350Ã—250	14Ã—10	355.6Ã—273.0	377Ã—273	330
350Ã—200	14Ã—8	355.6Ã—219.1	377Ã—219	330
350Ã—150	14Ã—6	355.6Ã—168.3	377Ã—159	330
400Ã—350	16Ã—14	406.4Ã—355.6	426Ã—377	356
400Ã—300	16Ã—12	406.4Ã—323.9	426Ã—325	356
400Ã—250	16Ã—10	406.4Ã—273.0	426Ã—273	356
400Ã—200	16Ã—8	406.4Ã—219.1	426Ã—219	356
450Ã—400	18Ã—16	457Ã—406.4	478Ã—426	381
450Ã—350	18Ã—14	457Ã—355.6	478Ã—377	381
450Ã—300	18Ã—12	457Ã—323.9	478Ã—325	381
450Ã—250	18Ã—10	457Ã—273.0	478Ã—273	381
500Ã—450	20Ã—18	508Ã—457	529Ã—478	508
500Ã—400	20Ã—16	508Ã—406.4	529Ã—426	508
500Ã—350	20Ã—14	508Ã—355.6	529Ã—377	508
500Ã—300	20Ã—12	508Ã—323.9	529Ã—325	508
550Ã—500	22Ã—20	559Ã—508	â€“	508
550Ã—450	22Ã—18	559Ã—457	â€“	508
550Ã—400	22Ã—16	559Ã—406.4	â€“	508
550Ã—350	22Ã—14	559Ã—355.6	â€“	508
600Ã—550	24Ã—22	610Ã—559	â€“	508
600Ã—500	24Ã—20	610Ã—508	630Ã—529	508
600Ã—450	24Ã—18	610Ã—457	630Ã—478	508
600Ã—400	24Ã—22	610Ã—406.4	630Ã—426	508
650Ã—600	26Ã—24	660Ã—610	â€“	610
650Ã—550	26Ã—22	660Ã—559	â€“	610
650Ã—500	26Ã—20	660Ã—508	â€“	610
650Ã—450	26Ã—18	660Ã—457	â€“	610
700Ã—650	28Ã—26	711Ã—660	â€“	610
700Ã—600	28Ã—24	711Ã—610	720Ã—630	610
700Ã—550	28Ã—22	711Ã—559	â€“	610
700Ã—500	28Ã—20	711Ã—508	720Ã—530	610
750Ã—700	30Ã—28	762Ã—711	â€“	610
750Ã—650	30Ã—26	762Ã—660	â€“	610
750Ã—600	30Ã—24	762Ã—610	â€“	610
750Ã—550	30Ã—22	762Ã—559	â€“	610
800Ã—750	32Ã—30	813Ã—762	â€“	610
800Ã—700	32Ã—28	813Ã—711	820Ã—720	610
800Ã—650	32Ã—26	813Ã—660	â€“	610
800Ã—600	32Ã—24	813Ã—610	820Ã—630	610
850Ã—800	34Ã—32	864Ã—813	â€“	610
850Ã—750	34Ã—30	864Ã—762	â€“	610
850Ã—700	34Ã—28	864Ã—711	â€“	610
850Ã—650	34Ã—26	864Ã—660	â€“	610
900Ã—850	36Ã—34	914Ã—864	â€“	610
900Ã—800	36Ã—32	914Ã—813	920Ã—820	610
900Ã—750	36Ã—30	914Ã—762	â€“	610
900Ã—700	36Ã—28	914Ã—711	920Ã—720	610
950Ã—900	38Ã—36	965Ã—914	â€“	610
950Ã—850	38Ã—34	965Ã—864	â€“	610
950Ã—800	38Ã—32	965Ã—813	â€“	610
950Ã—750	38Ã—30	965Ã—762	â€“	610
1000Ã—950	40Ã—38	1016Ã—965	â€“	610
1000Ã—900	40Ã—36	1016Ã—914	1020Ã—920	610
1000Ã—850	40Ã—34	1016Ã—864	â€“	610
1000Ã—800	40Ã—32	1016Ã—813	1020Ã—820	610
1050Ã—1000	42Ã—40	1067Ã—1016	â€“	610
1050Ã—950	42Ã—38	1067Ã—965	â€“	610
1050Ã—900	42Ã—36	1067Ã—914	â€“	610
1050Ã—850	42Ã—34	1067Ã—864	â€“	610
1100Ã—1050	44Ã—42	1118Ã—1067	â€“	610
1100Ã—1000	44Ã—40	1118Ã—1016	1120Ã—1020	610
1100Ã—950	44Ã—38	1118Ã—965	â€“	610
1100Ã—900	44Ã—36	1118Ã—914	1220Ã—920	610
1150Ã—1100	46Ã—44	1168Ã—1118	â€“	711
1150Ã—1050	46Ã—42	1168Ã—1067	â€“	711
1150Ã—1000	46Ã—40	1168Ã—1016	â€“	711
1150Ã—950	46Ã—38	1168Ã—965	â€“	711
1200Ã—1150	48Ã—46	1220Ã—1168	â€“	711
1200Ã—1100	48Ã—44	1220Ã—1118	1220Ã—1120	711
1200Ã—1050	48Ã—42	1220Ã—1067	â€“	711
1200Ã—1000	48Ã—40	1220Ã—1016	1220Ã—1020	711

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