Features • • • • • • • • • Push-pull Output Stage for 4 A Peak Current Low Rdson < 2 Ω 12 V Push-pull Output Stage for Pulse Shaping Super Short Propagation Delay Input-output 50 ns Super Fast Rise/Fall Time of Output Stage 12 ns Monitoring Circuit with 60 ns Switch-off Delay and 20 ms Lockout Undervoltage Lockout 40 ms Wide Supply Voltage Range from16 V up to 30 V Fully Integrated Charge Pump Electrostatic sensitive device. Observe precautions for handling. High Speed Power Driver IC ATA6821 Description The ATA6821 is a single-channel high-speed power driver IC designed with Atmel's 0.8 µm BCDMOS technology. With its extremly short propagation delay and super fast slew rates, the ATA6821 is ideally suited to control MOSFETs or IGBTs in a wide range of automotive and industrial high-speed applications. The push-pull output stage is capable of driving peak currents of 4 A. The ATA6821 is designed to control high currents as they can be found in electrical machines or in power converters. The ATA6821 is tailored to control low resistance switching devices by a potential-free input signal. The ATA6821’s full automotive qualification, ESD protection and protection against transients according to ISO/TR 7637/1 guarantees security for all kind of applications. Rev. 4778A–AUTO–11/03 Figure 1. Block Diagram VS Voltage Monitoring Monoflop Undervoltage Detection 1/3 VS 40 ms 20 ms FEED 8 VS 1, 2 Control Push Pull Output Stage Logic 7 V/ 4V 9 15K Pulse Shaping 2 70K Charge Pump 12 V GND MONITOR 3 Monoflop 10 MeasureLogic MEAS 5 TestLogic TEST OUTPUT 13, 14 PGND 11, 12 7 ATA6821 4778A–AUTO–11/03 ATA6821 Pin Configuration Figure 2. Pinning SO14 VS VS MONITOR NC MEAS NC TEST 1 2 3 4 5 6 7 14 13 12 11 10 9 8 OUTPUT OUTPUT PGND PGND GND INPUT FEED Pin Description Pin Symbol 1 VS Supply voltage 2 VS Supply voltage 3 MONITOR Note: 4 NC 5 MEAS 6 NC 7 TEST Function Voltage monitoring input Not connected Measurement pin Not connected Test pin 8 FEED Feed output 9 INPUT Input 10 GND 11 PGND Power ground(1) 12 PGND Power ground(1) 13 OUTPUT Output 14 OUTPUT Output Ground(1) 1. All ground pins must be connected together by short external connections. The measurement pin (pin 5) and the test pin (pin 7) must be connected to the ground pins. 3 4778A–AUTO–11/03 Functional Description The ATA6821 controls a push-pull power output stage for an external power device and a feedback output stage. If the voltage at the input pin is > 7 V, both outputs are at “high-level”, if the input voltage falls below the switch-off threshold of 4 V, both outputs are switched to ground. If a rectangular input signal is fed to the input, the feedback ouput “Feed” is not used and pin 8 needs no external connection. In case the input signal, however, comes from a transformer (potential-free control; see Figure 7 on page 11), the integrated pulse shaping circuit is used to achieve a reliable feedback configuration at the input. This ensures correct switching of the output stage even if the input signal is very noisy. For the timing of input and output signals and the slew rates, please refer to Figure 3 on page 8. The timing diagram is based on the following test conditions: A 2 kW resistor is connected between pin 8 and ground; a 2 kW resistor and a 1 nF capacitor are used as load for the power output (pins 13 and 14) simulating identical conditions as a power MOSFET, which is usually connected to the output. Undervoltage Detection During power-up and power-down of the supply voltage, the internal undervoltage circuit suppresses uncontrolled output pulses. In case of undervoltage (VS < 16 V), the feedback output and the power output are switched off and locked for 40 ms. When the supply voltage has reached the switch-on-threshold of about 17 V, both output stages are enabled after a delay time of 40 ms. Voltage Monitoring An effective short-circuit detection of the external device is achieved by a drain-source voltage monitor. The voltage monitor comparator (pin 3) has a threshold of 1/3 ´ V S . If the voltage applied to pin 3 exceeds this voltage, both output stages are switched off immediately and locked for 20 ms. With a hysteresis of 200 mV, the outputs are enabled again after a delay time of 20 ms. A voltage divider connected to VS is used to feed the input voltage to pin 3. A decoupling diode is recommended if the external power device‘s drain source voltage exceeds 30 V (see Figure 5 on page 9). With the help of an external capacitor, connected to pin 3, the switching characteristic of the voltage monitor comparator can be varied according to the rising edge of the input signal at pin 9. During the off cycle, the capacitor is discharged, during the on-cycle, it is charged again. If the voltage monitoring function is not used, pin 3 should be connected to ground (see Figure 4 on page 9). Application Hints Due to high peak output currents, the layout of the PC board is essential. Appropriate decoupling capacitors should be used, otherwise, the performance of the driver degrades severely. It is strongly recommended to connect the blocking capacitors (low ESR types) as close as possible to the power supply and the ground pins. If necessary, two or more capacitors of different types may be connected in parallel. The two power ground pins, the ground pin, the two output pins and the two supply pins should be externally connected together as close as possible to the pins. The measurement pin (pin 5) and the test pin (pin 7) must not be used in any application and need to be tied to ground. 4 ATA6821 4778A–AUTO–11/03 ATA6821 Absolute Maximum Ratings Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameters Pin Symbol Min. Max. Unit Supply voltage 1, 2 VS -0,3 30 V 3 VMonitor -0,3 VS + 0,3 V 13, 14 VOut -0,3 VS + 0,3 V Output voltage FEED 8 VFEED -0,3 15 V Input voltage 9 VInput -0,3 40 V Input voltage measurement 5 VMeas -0,3 VS + 0,3 V Input voltage TEST pin 7 VTest -0,3 5 V Input voltage, voltage monitoring Output voltage 8 IFEED -10 10 mA Output current 13, 14 IOut -200 200 mA Output current t £ 100 µs 13, 14 iOut -4 4 A Tamb -40 to +100 °C Junction temperature range Tj -40 to +150 °C Storage temperature range Tstg -40 to +150 °C Output current FEED Ambient temperature range Thermal Resistance Parameters Junction to ambient Symbol Value Unit RthJA 130 K/W ESD Protection Parameters ESD (Human Body Model) ESD CDM (Charged Device Model) Test Conditions Value MIL-STD-883D Method 3015.7 ±2 kV (pins 3 and 9: 1 kV) STM 5.3.1 - 1999 ±500 V 5 4778A–AUTO–11/03 Electrical Characteristics Conditions: 16 V < VS < 30 V; -40°C < TA < 100°C V1 = V2 = VS, V13 = V14 = VOut, V4 = V5 = V6 = V7 = 0 V V10 = V11 = V12 = GND = Reference point, unless otherwise specified No. 1 1.1 Parameters Test Conditions Pin Symbol Min. 1, 2 VS 16 1, 2 IVS Typ. Max. Unit Type* 30 V C 6 mA A 18 V A mV A Supply Voltage Range Supply voltage Vs £ 30 V; no load at “Feed” and “Output” 2 Current Consumption 3 Undervoltage Detection (UVD) 3.1 Switch-on threshold UVD 1, 2 VSon 3.2 Hysteresis UVD 1, 2 dVSon 3.3 Timeout after undervoltage 1, 2 toffUVD 30 40 50 ms A 4 16 17 300 Voltage Monitoring (VM) 4.1 Input Resistance 3 RiVM 30 70 150 kW A 4.2 Switch-off threshold VM 3 VToff VS/3 - 2% VS/3 VS/3 + 4% V A 4.3 Hysteresis VM 3 dVS 200 mV A 4.4 Switch-off-delay monitor-output 3 - 13, 14 tdoffVM 60 ns A 4.5 Timeout after switch-off by voltage monitoring 3 - 13, 14 toffVM ms A kW A 5 15 20 25 Input Stage 15 5.1 Input Resistance 9 RiInput 5.2 Switch-on-threshold 9 VINON 6 8 V A 5.3 Switch-off-threshold 9 VINOFF 3 5 V A 5.4 Propagation delay-time “Input - Feed” 9-8 tdIn-Feed 30 ns A 5.5 Propagation delay-time “Input - Output” 9 - 13 tdIn-Out 50 ns A VFeed0 13 V A 6 Feed Output 6.1 High voltage Feed, no load Pin 8 open, V9 ³ 8 V 8 6.2 Output resistance high IFeed = -5 mA, V9 ³ 8 V 8 RFeedHi 500 1000 W A 6.3 Output resistance low IFeed = 5 mA, V9 £ 3 V 8 RFeedLo 100 500 W A 6.4 Rise time (10% to 90%) RFeed external = 2 kW, Rising edge at pin 9 8 trFeed 20 ns A 6.5 Fall time (10% to 90%) RFeed external = 2 kW, Falling edge at pin 9 8 tfFeed 10 ns A *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter 6 ATA6821 4778A–AUTO–11/03 ATA6821 Electrical Characteristics (Continued) Conditions: 16 V < VS < 30 V; -40°C < TA < 100°C V1 = V2 = VS, V13 = V14 = VOut, V4 = V5 = V6 = V7 = 0 V V10 = V11 = V12 = GND = Reference point, unless otherwise specified No. 7 Parameters Test Conditions Pin Symbol Min. Typ. Max. Unit Type* Push-pull-outputstage 7.1 On-resistance high IOut = -1 A, V9 ³ 8 V 13 - 1, 2 ROutHigh 2 W A 7.2 On-resistance low IOut = 1A, V9 £ 3 V 13 ROutLow 2 W A 7.3 Peak output current high t £ 100 µs, rising edge at pin 9 13,14 -iOut 4 A D 7.4 Peak output current low t £ 100 µs, falling edge at pin 9 13,14 iOut 4 A D 7.5 Rising edge at pin 9 Rise time (10% to 90%) external load: COut = 1 nF, ROut = 2 kW 13,14 trOut 12 ns A 7.6 Falling edge at pin 9 Fall time (10% to 90%) external load: COut = 1 nF, ROut = 2 kW 13,14 tfOut 12 ns A *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter 7 4778A–AUTO–11/03 Figure 3. Timing Diagram(1) 1 VINPUT 15 V 7V 4V t VFEED 10 V 9V 1V t trFeed tfFeed VOUTPUT 24 V 21.6 V 2.4 V t td In-Feed td In-Feed td In-Out Note: 8 tr Out tdIn-Out tfOut 1. A 2 kW resistor is connected between pin 8 and ground; a 2 kW resistor and a 1 nF capacitor are used as load for the power output (pins 13 and 14), simulating identical conditions as a power MOSFET, which is usually connected to the output. ATA6821 4778A–AUTO–11/03 ATA6821 Figure 4. Application Circuit 1: Power Driver with Minimum External Components Voltage Monitoring VS Monoflop Undervoltage Detection MONITOR Monoflop 1/3 VS 40 ms 20 ms Charge Pump 12 V VS VS Control - 1, 2 Push Pull Output Stage Logic 7 V/ 4V 9 15K Pulse Shaping MeasureLogic LOAD FEED 8 INPUT 3 70K OUTPUT 13, 14 + TestLogic CVS PGND 11, 12 GND 10 MEAS 5 TEST 7 GND Figure 5. Application Circuit 2: Driver Circuit with Short-circuit Monitoring via the Drain-source Voltage of the Power Device VS Voltage Monitoring Undervoltage Detection Monoflop MONITOR Monoflop 1/3 VS 40 ms 20 ms 3 70K Charge Pump 12 V VS Control Logic 7 V/ 4V 9 15K Pulse Shaping MeasureLogic TestLogic 1, 2 Push Pull Output Stage VS LOAD FEED 8 OUTPUT 13, 14 + CVS PGND 11, 12 GND 10 MEAS 5 TEST 7 GND 9 4778A–AUTO–11/03 Figure 6. Application Circuit 3: Six ATA6821 Used to Control a Three-phase Asynchronous Machine VP VS1 Driver 1 VT1 VS2 Driver 2 VS5 VS3 L1 L3 Driver 5 Driver 3 VT2 L2 VS4 VT3 VS6 Asynchronous machine Driver 4 10 Driver 6 ATA6821 4778A–AUTO–11/03 4778A–AUTO–11/03 µC V3 V2 V1 DGND 1 2 t t t 1:3 3 9 INPUT 8 FEED 15K 10 Pulse Shaping GND 7 V/ 4V 12 V Undervoltage Detection VS MEAS 5 MeasureLogic 40 ms Monoflop TEST 7 TestLogic Logic Control Push Pull Output Stage 20 ms Monoflop Charge Pump 1/3 VS Voltage Monitoring 70K MONITOR 11, 12 PGND 13, 14 OUTPUT 1, 2 VS 3 VTn VTn Vp VS CVS VTn + ATA6821 Figure 7. External Components for one ATA6821 in Application Circuit 3: Potential-free Control of a Three-phase Asynchronous Machine 11 Ordering Information Extended Type Number Package Remarks ATA6821-TUS SO14 tubed ATA6821-TUQ SO14 taped and reeled Package Information Package SO14 5.2 4.8 Dimensions in mm 8.75 3.7 1.4 0.25 0.10 0.4 1.27 6.15 5.85 7.62 14 0.2 3.8 8 technical drawings according to DIN specifications 1 12 7 ATA6821 4778A–AUTO–11/03 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel: (49) 71-31-67-0 Fax: (49) 71-31-67-2340 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel: (33) 2-40-18-18-18 Fax: (33) 2-40-18-19-60 ASIC/ASSP/Smart Cards 1150 East Cheyenne Mtn. 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