Freescale Semiconductor, Inc. Order Number: MC33286/D Rev. 5.4, 06/2001 MOTOROLA Semiconductor Technical Data MC33286 Advance Information AUTOMOTIVE DUAL HIGH SIDE DRIVER Freescale Semiconductor, Inc... Automotive Dual High Side Driver SEMICONDUCTOR TECHNICAL DATA DW SUFFIX SO20WB Package This device is a dual high side power switch dedicated for automoive applications. In comparison with mechanical relays, this device offers higher reliability as well as protection and diagnostic features. The device consists of two independent 35mΩ Rdson switches in a surface mount package. It can be directly interfaced with a microcontroller for control and diagnostic functions. The device is fully protected against overcurrents, short-circuits and incorporates an overtemperature shutdown. It can be directly and continuously supplied by the battery and offers a very low quiescent current in standby mode. CASE 751D-05 PIN ASSIGNMENT • Designed for Automotive Applications • Junction Temperature Range from -40°C to 150°C • Operating Voltage Range from 8V to 40V • Maximum Breakdown Voltage greater than 40V • Surface Mount Package • 35mΩ Rdson at 25°C • Overtemperature Protection with Hysteresis • Under Voltage Shutdown • Reverse Battery protected • Open Load Detection in On-State • Diagnostic Output • ESD Protection 2kV • Current Limitation at 30A • Loss of ground protected • Standby Current less than 10µA at Vbat = 14V Vbat 1 20 Vbat Vbat 2 19 Vbat Out1 3 18 Out2 Out1 4 17 Out2 Vbat 5 16 Vbat Vbat 6 15 Vbat NC 7 14 NC In 1 8 13 In 2 St1 9 12 St2 10 11 Gnd Vbatc ORDERING INFORMATION Device Operating Temperature Range Package PC33286DW TA=-40° to +125°C SO20 Simplified Application Schematic 5V 5V 5V V BAT + VBATC - ST1 OUT1 ST2 MCU IN1 MC33286 21W OUT2 IN2 21W This document contains information on a new product. Specifications and information herein are subject to change without notice. TM © Motorola, Inc., 2001. All rights reserved. For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. MC33286 MAXIMUM RATINGS Freescale Semiconductor, Inc... Ratings Symbol Value Unit Vbat and Vbatc Voltage : Continuous/Pulse Vbat -0.3 to 40 V OUT1, OUT2 Voltage with Respect to Gnd : Continuous/ Pulse Vout -0.3 to 40 V OUT1, OUT2 to Vbtap Voltage : Continuous Vout 40 V St1, St2 Voltage : Continuous/Pulse Vst -0.3 to 5.5 V IN1, IN2 Voltage : Continuous/Pulse Vin -0.3 to 10 V In1, In2, St1, St2 Current Iin +/-4 mA ESD all Pins Vesd +/-2000 V OUT1, OUT2 DC Output Current Iout 6 A OUT1, OUT2 Pulse Current (Note 1) Ioutp 30 A Junction Temperature Tj -40 to 150 °C Storage Temperature Tst -65 to 150 °C Rthja 70 °C/W THERMAL RATINGS Thermal Resistance Junction to Ambient (note 2) NOTES : 1. During lamps inrush current. Value internally limited. 2. Device mounted with minimum pcb dimensions. ELECTRICAL CHARACTERISTICS Tj from - 40°C to +125°C, Vbat from 8V to 16V, unless otherwise noted.Typical values reflect approximate mean at 25°C, V bat =12V, at time of device characterization. Characteristics Description Symbol Unit Min Operating Voltage Vbat Typ 8 Conditions Max 40 V Vuv 7 8 V Drain-Source on Resistance Rdson 25 35 mΩ V bat > 9V ; T j = 25°C Drain-Source on Resistance Rdson 35 50 mΩ High Current Limitation Ilimh 30 A Vbat > 9V ; Tj = 150°C VOUT > 1V Short-Circuit Current Limitation Iliml 10 A VOUT < 1V, Tj = 25°C Body Diode Forward Voltage Vf 0.7 V Iout = -2A, Tj = 25°C Body Diode Forward Voltage Vf 0.6 V Iout = -2A, Tj = 125°C Hot Open Load Current Iol 400 Under Voltage Threshold 700 mA Device in On State Istdby 10 µA Vbat < 14V ; Vin < 0.8V Supply Current : One Channel On Ion1 10 mA In1 or In 2 in High State Supply Current : Both Channels On Ion2 20 mA In1 and In 2 in High State Low Input Voltage Vil 1.5 V 0.7 0.9 V 20 100 µA Vin = 3.5V 0.5 V Ist = 1mA ; Output in Fault Standby Current High Input Voltage Input Hysteresis Vih 3.5 Vhyst 0.4 Input Current Iih Status Voltage Vstatus V Thermal Shutdown Tshut Thermal Shutdown Hysteresis T hyst Output Maximum Positive Slew Rate Srpout 0.05 0.2 Output Maximum Negative Slew Rate Srnout 0.15 0.8 PWM frequency fPWM Turn-on Delay Time tdon 150 °C 20 100 °C 0.5 V/µs Load = 6Ω, Vbat =12V Load = 6Ω, Vbat =12V 1.5 V/µs 150 Hz 150 µs Automotive Dual High Side Driver For More Information On This Product, Go to: www.freescale.com In=2.5V to 10% Vout, Vbat=12V 2 Freescale Semiconductor, Inc. MC33286 ELECTRICAL CHARACTERISTICS Tj from - 40°C to +125°C, Vbat from 8V to 16V, unless otherwise noted.Typical values reflect approximate mean at 25°C, V bat =12V, at time of device characterization. Characteristics Description Symbol Min Typ Max 150 Turn-off Delay Time tdoff 100 Open Load to Status Low Delay Time TOL 10 Unit Conditions µs IN = 2.5V to 90% Vout, Vbat=12V µs FUNCTIONAL TRUTH TABLE Freescale Semiconductor, Inc... Conditions IN1 IN2 OUT1 OUT2 St1 St2 Normal Operation L H L H L L H H L H L H L L H H H H H H H H H H Undervoltage X X L L H H Overtemperature Channel 1 Overtemperature Channel 2 Overtemperature Channel 1/Channel 2 H X H X H H L X L X L L L H L H L L Open Load Channel 1 Open Load Channel 2 H X X H H X X H L H H L Overcurrent Channel 1 Overcurrent Channel 2 H X X H X X X X H H H H L = ‘Low level’ ; H = ‘High level’ ; X = ‘don’t care’ Figure 1. Application Schematic Vbatc Battery V bat V bat Vbat Vbat Vbat V bat V bat V bat 100nF OUT2 OUT2 Load 2 Thermal Sensor 5V Over Temp Status pull-up resistors Charge Pump Status 2 10KΩ 10KΩ IN2 Vbatc CHANNEL 2 OUT1 OUT1 Open Load Input Trigger MCU IN1 Load 1 Over Current U.V. Lockout Status 1 CHANNEL 1 GND Automotive Dual High Side Driver For More Information On This Product, Go to: www.freescale.com 3 Freescale Semiconductor, Inc. MC33286 PIN FUNCTION DESCRIPTION Pin No. 1, 2, 5, 6, 15, 16, 19, 20 Description Vbat Supply Voltage These are the power supply pins of the device. These pins are directly connected with the lead frame of the package and are tied to the drain of the switching MOSFET. These pins can be directly connected to the battery voltage. In addition to their supply functions, these pins participate to the thermal behaviour of the device in conducting the heat from the switching MOSFET to the printed circuit board. OUT1 OUTPUT Channel 1 OUT 2 OUTPUT Channel 2 Pins 3 and 4 are the output 1 terminals. Pins 17 and 18 are the output 2 terminals. They are directly connected to the source of the power MOSFET. The Rdson is 35mΩ max per output at 25°C. Its value increases up to 50mΩ at 150°C junction temperature. 8, 13 IN 1 INPUT Channel 1 IN 2 INPUT Channel 2 These are the device input pins, which directly control their associated output. The thresholds are CMOS compatible. When the input is in low state, the associated output MOSFET is off. When input is high, the MOSFET is turned on and the load is activated. When both inputs are low, the device is in standby mode and its supply current is less than 1mA for Vbat up to 12V. 9, 12 St1 Status for Channel 1 St2 Status for Channel 2 These pins are the channel 1 and 2 status. Their internal structure is an open drain with an internal clamp at 6V. An external pull up connected to the 5V is needed. When the device is in normal condition the status is high. If open load or overtemperature occurs on one channel, the associated output status will be pulled low. See Functional Truth Table. 10 Vbatc VBAT Control This pin is the supply voltage pin for the control portion of the device. It has to be connected to the Vbat line and to the other Vbat pins listed above. An internal 45V zener diode is connected between pin 10 and Gnd. 11 GND GROUND This is the Gnd pin of the device. 3, 4, 18, 17 Freescale Semiconductor, Inc... Name/Function Automotive Dual High Side Driver For More Information On This Product, Go to: www.freescale.com 4 Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... MC33286 FUNCTIONAL DESCRIPTION Input Trigger General Information The MC33286 has a special input trigger circuitry allowing This device is a dual high side power switch dedicated for the device to have less than 0.5µA typical standby current. automotive applications. In comparison with mechanical When the input level is below 1.5V, the circuit is in sleep mode relays, this device offers higher reliability as well as protection (see Figure 4). and diagnostic features. It has been designed to be directly connected to the battery voltage. Status Output In the future, the number of electronic switches directly The output status is an open drain structure, active at low connected to the battery will increase, so the MC33286 level, so an external pull-up resistor is required to read the includes a special input trigger and architecture which allows status information. to have a very low standby current when the Vbat is lower than The status indicates the open load and the over 12V. temperature information. The output short-circuit, current The MC33286 concept uses a dual chip approach packaged limitation and Vbat undervoltage are not reported on the status in a single SO20 package. This low power package can be used because the ON resistance of the switch (35mΩ max at 25°C) pin. But an output short-circuit to Gnd will be detected by an guarantees a low power dissipation (less than 300mW) when overtemperature because the total power dissipation of the driving two 21Watts lamps. The two chips are internally connected device will make it reach the thermal detection. by die to die wire bonding to allow the transfer of analog and control information between the two dice. Open Load Function The two chips are the Control and Power dice. The open load detection is active during the ON phase (Hot The Control chip uses the SMARTMOS3.5NVM open load detection). An amplifier measures the differential volttechnology. The two channels of this control chip are totally age between Vbat and Vout (this value is typically 400mA) at symmetrical and independant. It drives the gate of the output 25°C. power MOSFET and manages the analog information from the An open load condition will create a voltage lower than 12mV power MOSFET die to ensure power device protection. and the open load circuitry will detect it and will pull down the staThe Power chip uses the HDTMOS3 technology. It has tus output. If the open load condition is present before the device one independent sources plus current sensing cells for open turn-on, the status will be pulled down after a delay due to the rise load detection and current limitation. In addition, a thermal time of the output. sensor (diode) is located in the middle of each source to protect the MC33286 against overtemperature. The drain of Overcurrent Function (High Current Limitation) the Power die is connected to the battery voltage by the lead The device incorporates a current limitation at 30 Amps frame of the package. This lead frame has been especially typical when outputs are loaded (Vout > 1V) . A 21 Watts lamp developed and has eight pins connected together to the Vbat. has a nominal current of about 2 amp and at turn on, the MC33286 has to drive a peak current of about 12A, as the These pins are used as the Vbat connection as well as thermal lamp inrush current is about six times the nominal DC current. path. A standard current limitation set up at 30A will not being activated during the inrush current of one lamp but will protect Supply Voltage the circuit against overcurrent. Figure 3 shows the overcurrent The MC33286 can be directly connected to the Vbat line. threshold versus temperature. Figure 4 shows the supply voltage characteristics. The Vbatc (Vbat of Control die, pin 10) and Vbat (Vbat of power die, pins 1, 2, 5, 6, 15, 16, 19, 20) are not internally connected, so the Vbat Short Circuit Protection (Low Current Limitation) During a hard short-circuit to Gnd, the power dissipation and Vbatc have to be connected externally by the printed would be 30A x 14V = 420 Watts if only the overcurrent circuit board. limitation exists. The thermal protection will be activated and switch the device off. Nevertheless the peak power Under Voltage dissipation and energy is quite high. Figure 4 also shows the supply voltage characteristic Therefore, a short circuit protection has been when one or two sides of the MC33286 are turned on. From implemented and is activated when the output voltage is lower 0V to undervoltage level (7V typical), all blocks of the than about 1V . As shown in the Figure 5, the low current MC33286 are not totally supplied. The undervoltage threshold limitation decreases with temperature. In the case of a short value versus temperature is shown in Figure 2.The under circuit, the power dissipated in the device decreases with time voltage function allows the turn-off of the output transistor, due to the decay of the current limitation with temperature. because the Vbat voltage will be not enough to guarantee the full on state of the output transistor due to an incomplete drive Overtemperature Function of the gate. When the Vbat is greater than the undervoltage The overtemperature function uses a thermal sensor threshold, the supply current increases due to the charge located in the middle of each output power HDTMOS pump start up and MOSFET driver activation. transistor. The sensor is a diode connected to Vbat in the power die. The diode forward voltage varies of -2mV/°C. So, Reverse Battery Protection by measuring the diode voltage the power output MOSFET When a negative battery voltage arises, the current flows temperature is monitored. This diode voltage information is in a reverse direction from the source region to drain region of transferred to the control die and compared to a reference both of the MosFets through the body diode. The limitation is voltage generated from the band gap reference generator. then the temperature reached by the junction, which is linked When the temperature reaches the overtemp threshold, the to the thermal impedance from the junction to the ambiant. circuit is turned off. As the input voltage is still high, the circuit is not in wake mode but the current consumption decreases due to the turn-off of the charge pump. The overtemperature Automotive Dual High Side Driver For More Information On This Product, Go to: www.freescale.com 5 Freescale Semiconductor, Inc. MC33286 Freescale Semiconductor, Inc... FUNCTIONAL DESCRIPTION comparator has an hysteresis which maintains the device off. As soon as the die power temperature decreases by around 20°C the device automatically switches on again. If the cause of the overtemperature has not been removed, it is likely that the device will reach the overtemperature shutdown again and will cycle off and on until the overtemperature cause is removed. As soon as the device switches off, due to overtemperature, the status pin is pulled low to inform the microcontroller that an abnormal condition has occured. Automotive Dual High Side Driver For More Information On This Product, Go to: www.freescale.com 6 Freescale Semiconductor, Inc. Figure 3. High Current Limitation Versus Temperature 8 40 6 30 CURRENT (A) VOLTAGE (V) Figure 2. Undervoltage Threshold Versus Temperature 4 10 2 0 0 -50 0 50 100 -50 150 0 50 100 150 TEMPERATURE (°C) TEMPERATURE (°C) Figure 4. Battery Supply Current Versus Vbat 200 Figure 5. Short Circuit Current Limitation Versus Temperature 12 20 2 Sides ON 15 8 6 CURRENT (A) CURRENT (mA) 10 1 Side ON 4 10 5 2 2 Sides OFF 0 0 0 10 20 30 40 -50 0 BATTERY VOLTAGE (V) Figure 6. OpenLoad Current Threshold Versus Temperature 50 100 TEMPERATURE (°C) 150 200 Figure 7. Ron Versus Temperature 600 1,5 RON, (NORMALIZED) 1,4 CURRENT (mA) Freescale Semiconductor, Inc... 20 450 300 150 1,3 1,2 1,1 1,0 0,90 0,80 0 -50 0 50 100 TEMPERATURE (°C) 150 0,70 -50 -25 0 25 50 75 100 125 TEMPERATURE (°C) Automotive Dual High Side Driver For More Information On This Product, Go to: www.freescale.com 7 Freescale Semiconductor, Inc... Freescale Semiconductor, Inc. Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typical” must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or un authorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the parts. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Employment Opportunity/Affirmative Action Employer. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217. 1-303-675-2140 or 1-800-441-2447 Technical Information Center: 1-800-521-6274 JAPAN: Motorola Japan Ltd.; SPS, Technical Information Center, 3-20-1, Minami-Azabu, Minato-ku, Tokyo 106-8573 Japan. 81-3-344-3569 ASIA / PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, 2, Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong. 852-26668334 HOME PAGE: http://www.motorola.com/semiconductors MC33286/D For More Information On This Product, Go to: www.freescale.com