BTN8982TA High Current PN Half Bridge NovalithIC™ Data Sheet Rev. 1.0, 2013-05-17 Automotive Power High Current PN Half Bridge BTN8982TA Table of Contents Table of Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 2.1 2.2 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 3.1 3.2 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 4.1 4.2 4.3 General Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5.1 5.2 5.2.1 5.2.2 5.2.3 5.3 5.3.1 5.3.2 5.3.3 5.3.4 5.3.5 5.4 5.4.1 5.4.2 5.4.3 5.4.4 5.4.5 5.4.6 Block Description and Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Supply Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Power Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Power Stages - Static Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Switching Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Power Stages - Dynamic Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Protection Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Undervoltage Shut Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Overtemperature Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Current Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Short Circuit Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Electrical Characteristics - Protection Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Control and Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Input Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Dead Time Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Adjustable Slew Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Status Flag Diagnosis with Current Sense Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Truth Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Electrical Characteristics - Control and Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6 6.1 6.2 6.3 Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Layout Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PWM Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 8 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Data Sheet 2 6 6 7 8 22 22 22 23 Rev. 1.0, 2013-05-17 High Current PN Half Bridge NovalithIC™ 1 BTN8982TA Overview Features • • • • • • • • • • • • • • Path resistance of max. 20.4 mΩ @ 150 °C (typ. 10.0 mΩ @ 25 °C) High Side: max. 10.5 mΩ @ 150 °C (typ. 5.3 mΩ @ 25 °C) Low Side: max. 9.9 mΩ @ 150 °C (typ. 4.7 mΩ @ 25 °C) Enhanced switching speed for reduced switching losses Capable for high PWM frequency combined with active freewheeling Low quiescent current of typ. 7 μA @ 25 °C Switched mode current limitation for reduced power dissipation in overcurrent Current limitation level of 55 A min. Status flag diagnosis with current sense capability Overtemperature shut down with latch behaviour Undervoltage shut down Driver circuit with logic level inputs Adjustable slew rates for optimized EMI Operation up to 40V Green Product (RoHS compliant) AEC Qualified PG-TO263-7-1 Description The BTN8982TA is an integrated high current half bridge for motor drive applications. It is part of the NovalithIC™ family containing one p-channel highside MOSFET and one n-channel lowside MOSFET with an integrated driver IC in one package. Due to the p-channel highside switch the need for a charge pump is eliminated thus minimizing EMI. Interfacing to a microcontroller is made easy by the integrated driver IC which features logic level inputs, diagnosis with current sense, slew rate adjustment, dead time generation and protection against overtemperature, undervoltage, overcurrent and short circuit. The BTN8982TA provides a cost optimized solution for protected high current PWM motor drives with very low board space consumption. Type Package Marking BTN8982TA PG-TO263-7-1 BTN8982TA Data Sheet 3 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Block Diagram 2 Block Diagram The BTN8982TA is part of the NovalithIC™ family containing three separate chips in one package: One p-channel highside MOSFET and one n-channel lowside MOSFET together with a driver IC, forming an integrated high current half-bridge. All three chips are mounted on one common lead frame, using the chip on chip and chip by chip technology. The power switches utilize vertical MOS technologies to ensure optimum on state resistance. Due to the p-channel highside switch the need for a charge pump is eliminated thus minimizing EMI. Interfacing to a microcontroller is made easy by the integrated driver IC which features logic level inputs, diagnosis with current sense, slew rate adjustment, dead time generation and protection against overtemperature, undervoltage, overcurrent and short circuit. The BTN8982TA can be combined with other BTN8982TA to form H-bridge and 3phase drive configurations. 2.1 Block Diagram VS Undervolt. detection Current Sense Current Limitation HS Overtemp . detection Gate Driver HS IS OUT Digital Logic LS off IN HS off Gate Driver LS INH Current Limitation LS Slewrate Adjustment SR GND Figure 1 Block Diagram 2.2 Terms Following figure shows the terms used in this data sheet. VS I VS , -I D (H S) IIN V IN I IN H VIN H IN VS INH OUT ISR V SR VIS I IS I OU T , I L VD S(L S) SR IS V D S(H S) V OU T GND I GN D , I D (L S) Figure 2 Data Sheet Terms 4 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Pin Configuration 3 Pin Configuration 3.1 Pin Assignment 8 1234 5 67 Figure 3 Pin Assignment BTN8982TA (top view) 3.2 Pin Definitions and Functions Pin Symbol I/O Function 1 GND - Ground 2 IN I Input Defines whether high- or lowside switch is activated 3 INH I Inhibit When set to low device goes in sleep mode 4,8 OUT O Power output of the bridge 5 SR I Slew Rate The slew rate of the power switches can be adjusted by connecting a resistor between SR and GND 6 IS O Current Sense and Diagnostics 7 VS - Supply Bold type: pin needs power wiring Data Sheet 5 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA General Product Characteristics 4 General Product Characteristics 4.1 Absolute Maximum Ratings Absolute Maximum Ratings 1) Tj = -40 °C to +150 °C; all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Limit Values Unit Conditions Min. Max. -0.3 40 V – -40 – V Tj ≥ 25°C -38 – V Tj < 25°C – 40 V Tj ≥ 25°C – 38 V Tj < 25°C VIN VINH VSR VS -VIS VIS -0.3 5.3 V – -0.3 1.0 V – -0.3 40 V – -20 40 V – ID(HS) ID(LS) -50 50 A TC < 85°C -44 44 A Voltages 4.1.1 Supply Voltage 4.1.2 Drain-Source Voltage High Side 4.1.3 Drain-Source Voltage Low Side 4.1.4 Logic Input Voltage 4.1.5 Voltage at SR Pin 4.1.6 Voltage between VS and IS Pin 4.1.7 Voltage at IS Pin VS VDS(HS) VDS(LS) Currents 4.1.8 HS/LS Continuous Drain Current2) switch active TC < 125°C switch active 4.1.9 4.1.10 HS/LS Pulsed Drain Current HS/LS PWM Current2) 2) ID(HS) ID(LS) ID(HS) ID(LS) A tpulse = 10ms single pulse TC < 85°C TC < 125°C -117 -104 117 104 -68 -60 68 60 -70 -62 70 62 -40 150 °C – -55 150 °C – kV HBM3) A f = 1kHz, DC = 50% TC < 85°C TC < 125°C A f = 20kHz, DC = 50% TC < 85°C TC < 125°C Temperatures 4.1.11 Junction Temperature 4.1.12 Storage Temperature Tj Tstg ESD Susceptibility 4.1.13 ESD Resistivity HBM IN, INH, SR, IS OUT, GND, VS VESD -2 -6 2 6 1) Not subject to production test, specified by design 2) Maximum reachable current may be smaller depending on current limitation level 3) ESD susceptibility, HBM according to ANSI/ESDA/JEDEC JS-001 (1,5kΩ, 100pF) Data Sheet 6 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA General Product Characteristics Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are not designed for continuous repetitive operation. Maximum Single Pulse Current 120 110 100 90 |I max| [A] 80 70 60 50 40 30 20 10 0 1,0E-03 1,0E-02 1,0E-01 1,0E+00 1,0E+01 t pulse[s] BTN8982TA Maximum Single Pulse Current (TC < 85°C) Figure 4 This diagram shows the maximum single pulse current that can be driven for a given pulse time tpulse. The maximum reachable current may be smaller depending on the current limitation level. Pulse time may be limited due to thermal protection of the device. 4.2 Pos. Functional Range Parameter Symbol Limit Values Min. Max. Unit Conditions 4.2.1 Supply Voltage Range for Normal Operation VS(nor) 8 18 V – 4.2.2 Extended Supply Voltage Range for Operation VS(ext) 5.5 40 V Parameter Deviations possible 4.2.3 Junction Temperature Tj -40 150 °C – Note: Within the functional or operating range, the IC operates as described in the circuit description. The electrical characteristics are specified within the conditions given in the Electrical Characteristics table. Data Sheet 7 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA General Product Characteristics 4.3 Pos. Thermal Resistance Parameter Symbol Limit Values Min. Typ. Max. Unit Conditions 4.3.1 Thermal Resistance Junction-Case, High Side Switch Rthjc(HS) = ΔTj(HS)/ Pv(HS) RthJC(HS) – 0.55 0.8 K/W 1) 4.3.2 Thermal Resistance Junction-Case, Low Side Switch Rthjc(LS) = ΔTj(LS)/ Pv(LS) RthJC(LS) – 1.1 1.6 K/W 1) 4.3.3 Thermal Resistance Junction-Ambient RthJA 19 – K/W 1) 2) – 1) Not subject to production test, specified by design 2) Specified RthJA value is according to Jedec JESD51-2,-5,-7 at natural convection on FR4 2s2p board; The Product (Chip+Package) was simulated on a 76.2 x 114.3 x 1.5 mm board with 2 inner copper layers (2 x 70µm Cu, 2 x 35µm Cu). Where applicable a thermal via array under the exposed pad contacted the first inner copper layer. Data Sheet 8 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Block Description and Characteristics 5 Block Description and Characteristics 5.1 Supply Characteristics VS = 8 V to 18 V, Tj = -40 °C to +150 °C, IL = 0 A, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Limit Values Min. Typ. Max. – 2.2 3.3 Unit Conditions mA VINH = 5 V VIN = 0 V or 5 V RSR = 0 Ω General 5.1.1 IVS(on) Supply Current DC-mode normal operation (no fault condition) 5.1.2 Quiescent Current IVS(off) – 7 13 µA – – 75 µA VINH = 0 V VIN = 0 V or 5 V Tj < 85 °C 1) VINH = 0 V VIN = 0 V or 5 V 1) Not subject to production test, specified by design I V S ( o f f ) [µA] Vs = 18V Vs = 14V Vs = 8V T [°C] Figure 5 Data Sheet Typical Quiescent Current vs. Junction Temperature 9 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Block Description and Characteristics 5.2 Power Stages The power stages of the BTN8982TA consist of a p-channel vertical DMOS transistor for the high side switch and a n-channel vertical DMOS transistor for the low side switch. All protection and diagnostic functions are located in a separate top chip. Both switches allow active freewheeling and thus minimizing power dissipation during PWM control. The on state resistance RON is dependent on the supply voltage VS as well as on the junction temperature Tj. The typical on state resistance characteristics are shown in Figure 6. Low Side Switch RON(LS) [mΩ] RON(HS) [mΩ] High Side Switch Tj = 150°C Tj = 150°C Tj = 25°C Tj = 25°C Tj = -40°C Tj = -40°C VS [V] Figure 6 Data Sheet VS [V] Typical ON State Resistance vs. Supply Voltage 10 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Block Description and Characteristics 5.2.1 Power Stages - Static Characteristics VS = 8 V to 18 V, Tj = -40 °C to +150 °C, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Limit Values Min. Typ. Unit Conditions mΩ IOUT = 9 A; VS = 13.5 V Tj = 25 °C; 1) Tj = 150 °C IOUT = 6 A; VS = 6 V Tj = 25 °C; 1) Tj = 150 °C VINH = 0 V; VOUT = 0 V Tj < 85 °C; 1) VINH = 0 V; VOUT = 0 V Tj = 150 °C IOUT = -9 A Tj = -40 °C; 1) Tj = 25 °C; 1) Tj = 150 °C Max. High Side Switch - Static Characteristics 5.2.1 ON State High Side Resistance RON(HS) – – 5.3 8.0 – 10.5 mΩ 5.2.2 5.2.3 Leakage Current High Side IL(LKHS) Reverse Diode Forward-Voltage VDS(HS) High Side2) – – 7.5 10 – 15.2 – – 2 µA – – 60 µA – – – 0.9 0.8 0.6 – – 0.8 – – 4.7 7.5 – 9.9 – – 6 9.5 – 13.5 – – 2 µA – – 30 µA V Low Side Switch - Static Characteristics 5.2.4 ON State Low Side Resistance RON(LS) mΩ mΩ 5.2.5 5.2.6 Leakage Current Low Side IL(LKLS) Reverse Diode Forward-Voltage -VDS(LS) Low Side2) V 0.9 0.8 0.7 – – – – – 0.9 1) Not subject to production test, specified by design 2) Due to active freewheeling, diode is conducting only for a few µs, depending on Data Sheet 11 IOUT = -9 A; VS = 13.5 V Tj = 25 °C; 1) Tj = 150 °C IOUT = -6 A; VS = 6 V Tj = 25 °C; 1) Tj = 150 °C VINH = 0 V; VOUT = VS Tj < 85 °C; 1) VINH = 0 V; VOUT = VS Tj = 150 °C IOUT = 9 A Tj = -40 °C; 1) Tj = 25 °C; 1) Tj = 150 °C RSR Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Block Description and Characteristics 5.2.2 Switching Times IN td r(H S) tr(H S) td f(H S) tf(H S) t VOUT 80% 80% ΔVOUT ΔVOUT 20% 20% t Figure 7 Definition of switching times high side (Rload to GND) IN td f(L S) tf(L S) t d r(L S) tr(L S) t VOUT 80% 80% ΔVOUT ΔV OUT 20% 20% t Figure 8 Definition of switching times low side (Rload to VS) Due to the timing differences for the rising and the falling edge there will be a slight difference between the length of the input pulse and the length of the output pulse. It can be calculated using the following formulas: • • ΔtHS = (tdr(HS) + 0.5 tr(HS)) - (tdf(HS) + 0.5 tf(HS)) ΔtLS = (tdf(LS) + 0.5 tf(LS)) - (tdr(LS) + 0.5 tr(LS)). Data Sheet 12 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Block Description and Characteristics 5.2.3 Power Stages - Dynamic Characteristics VS = 13.5 V, Tj = -40 °C to +150 °C, Rload = 2 Ω, 30µH < Lload < 40µH (in series to Rload), single pulse, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Limit Values Min. Typ. Unit Conditions Max. High Side Switch Dynamic Characteristics 5.2.7 5.2.8 5.2.9 5.2.10 Rise-Time of HS Switch ON Delay Time HS Fall-Time of HS Switch OFF Delay Time HS tr(HS) µs 0.05 – 0.22 0.25 0.38 1.3 0.85 – 6 1.5 – 2 3.4 5.2 15 4.6 – 31 0.05 – 0.22 0.25 0.38 1.3 0.85 – 6 0.8 – 1.1 2.4 3.4 9 4.1 – 21 0.05 – 0.22 0.25 0.38 1.3 0.85 – 6 tdr(HS) RSR = 0 Ω RSR = 5.1 kΩ RSR = 51 kΩ µs tf(HS) RSR = 0 Ω RSR = 5.1 kΩ RSR = 51 kΩ µs tdf(HS) RSR = 0 Ω RSR = 5.1 kΩ RSR = 51 kΩ µs RSR = 0 Ω RSR = 5.1 kΩ RSR = 51 kΩ Low Side Switch Dynamic Characteristics 5.2.11 5.2.12 5.2.13 5.2.14 Rise-Time of LS Switch OFF Delay Time LS Fall-Time of LS Switch ON Delay Time LS Data Sheet tr(LS) µs tdr(LS) RSR = 0 Ω RSR = 5.1 kΩ RSR = 51 kΩ µs 0.2 – 1 1.5 2.4 7 2.5 – 16 0.05 – 0.22 0.25 0.38 1.3 0.85 – 6 1.8 – 2.0 4.2 6 16 6.1 – 36 tf(LS) RSR = 0 Ω RSR = 5.1 kΩ RSR = 51 kΩ µs tdf(LS) RSR = 0 Ω RSR = 5.1 kΩ RSR = 51 kΩ µs 13 RSR = 0 Ω RSR = 5.1 kΩ RSR = 51 kΩ Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Block Description and Characteristics 5.3 Protection Functions The device provides integrated protection functions. These are designed to prevent IC destruction under fault conditions described in the data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are not to be used for continuous or repetitive operation, with the exception of the current limitation (Chapter 5.3.3). In case of overtemperature the BTN8982TA will apply the slew rate determined by the connected slew rate resistor. In current limitation mode the highest slew rate possible will be applied independent of the connected slew rate resistor. Overtemperature and overcurrent are indicated by a fault current IIS(LIM) at the IS pin as described in the paragraph “Status Flag Diagnosis with Current Sense Capability” on Page 17 and Figure 12. 5.3.1 Undervoltage Shut Down To avoid uncontrolled motion of the driven motor at low voltages the device shuts off (output is tri-state), if the supply voltage drops below the switch-off voltage VUV(OFF). The IC becomes active again with a hysteresis VUV(HY) if the supply voltage rises above the switch-on voltage VUV(ON). 5.3.2 Overtemperature Protection The BTN8982TA is protected against overtemperature by an integrated temperature sensor. Overtemperature leads to a shut down of both output stages. This state is latched until the device is reset by a low signal with a minimum length of treset at the INH pin, provided that its temperature has decreased at least the thermal hysteresis ΔT in the meantime. Repetitive use of the overtemperature protection impacts lifetime. 5.3.3 Current Limitation The current in the bridge is measured in both switches. As soon as the current in forward direction in one switch (high side or low side) is reaching the limit ICLx, this switch is deactivated and the other switch is activated for tCLS. During that time all changes at the IN pin are ignored. However, the INH pin can still be used to switch both MOSFETs off. After tCLS the switches return to their initial setting. The error signal at the IS pin is reset after 2 * tCLS. Unintentional triggering of the current limitation by short current spikes (e.g. inflicted by EMI coming from the motor) is suppressed by internal filter circuitry. Due to thresholds and reaction delay times of the filter circuitry the effective current limitation level ICLx depends on the slew rate of the load current dI/dt as shown in Figure 10. IL tCLS ICLx ICLx 0 t Figure 9 Data Sheet Timing Diagram Current Limitation (Inductive Load) 14 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Block Description and Characteristics Low Side Switch I C L L [A] I C L H [A] High Side Switch Tj = -40°C Tj = 25°C ICLH0 Tj = -40°C ICLL0 Tj = 150°C Tj = 25°C Tj = 150°C dIL/dt [A/ms] Figure 10 dIL/dt [A/ms] Typical Current Limitation Detection Level vs. Current Slew Rate dIL/dt Low Side Switch ICLL [A] ICLH [A] High Side Switch Tj = -40°C Tj = -40°C Tj = 25°C Tj = 25°C Tj = 150°C Tj = 150°C VS [V] Figure 11 VS [V] Typical Current Limitation Detection Levels vs. Supply Voltage In combination with a typical inductive load, such as a motor, this results in a switched mode current limitation. This method of limiting the current has the advantage of greatly reduced power dissipation in the BTN8982TA Data Sheet 15 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Block Description and Characteristics compared to driving the MOSFET in linear mode. Therefore it is possible to use the current limitation for a short time without exceeding the maximum allowed junction temperature (e.g. for limiting the inrush current during motor start up). However, the regular use of the current limitation is allowed as long as the specified maximum junction temperature is not exceeded. Exceeding this temperature can reduce the lifetime of the device. 5.3.4 Short Circuit Protection The device provides embedded protection functions against • • • output short circuit to ground output short circuit to supply voltage short circuit of load The short circuit protection is realized by the previously described current limitation in combination with the overtemperature shut down of the device. 5.3.5 Electrical Characteristics - Protection Functions VS = 8 V to 18 V, Tj = -40 °C to +150 °C, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Limit Values Unit Conditions VS increasing VS decreasing, INH = 1 Min. Typ. Max. – – 5.5 V 3.0 – 4.5 V – 0.2 – V 2) Under Voltage Shut Down 5.3.1 Switch-ON Voltage 5.3.2 Switch-OFF Voltage 5.3.3 ON/OFF Hysteresis 1) VUV(ON) VUV(OFF) VUV(HY) Current Limitation 5.3.4 Current Limitation Detection level ICLH0 High Side 55 77 98 A VS = 13.5 V 5.3.5 Current Limitation Detection level ICLL0 Low Side 55 77 98 A VS = 13.5 V tCLS 70 115 210 µs VS = 13.5 V; 2) Current Limitation Timing 5.3.6 Shut OFF Time for HS and LS Thermal Shut Down 5.3.7 Thermal Shut Down Junction Temperature TjSD 155 175 200 °C – 5.3.8 Thermal Switch ON Junction Temperature TjSO 150 – 190 °C – 5.3.9 Thermal Hysteresis ΔT – 7 – K 2) 5.3.10 Reset Pulse at INH Pin (INH low) treset 4 – – µs 2) 1) With decreasing Vs < 5.5V activation of the Current Limitation mode may occur before Undervoltage Shut Down. 2) Not subject to production test, specified by design. Data Sheet 16 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Block Description and Characteristics 5.4 Control and Diagnostics 5.4.1 Input Circuit The control inputs IN and INH consist of TTL/CMOS compatible schmitt triggers with hysteresis which control the integrated gate drivers for the MOSFETs. Setting the INH pin to high enables the device. In this condition one of the two power switches is switched on depending on the status of the IN pin. To deactivate both switches, the INH pin has to be set to low. No external driver is needed. The BTN8982TA can be interfaced directly to a microcontroller, as long as the maximum ratings in Chapter 4.1 are not exceeded. 5.4.2 Dead Time Generation In bridge applications it has to be assured that the highside and lowside MOSFET are not conducting at the same time, connecting directly the battery voltage to GND. This is assured by a circuit in the driver IC, generating a so called dead time between switching off one MOSFET and switching on the other. The dead time generated in the driver IC is automatically adjusted to the selected slew rate. 5.4.3 Adjustable Slew Rate In order to optimize electromagnetic emission, the switching speed of the MOSFETs is adjustable by an external resistor. The slew rate pin SR allows the user to optimize the balance between emission and power dissipation within his own application by connecting an external resistor RSR to GND. 5.4.4 Status Flag Diagnosis with Current Sense Capability The sense pin IS is used as a combined current sense and error flag output. In normal operation (current sense mode), a current source is connected to the status pin, which delivers a current proportional to the forward load current flowing through the active high side switch. The sense current can be calculated out of the load current by the following equation: 1 I IS = --------------⋅ I L + I IS ( offset ) (1) dk ILIS The other way around, the load current can be calculated out of the sense current by following equation: I L = dkILIS ⋅ ( IIS – IIS ( offset ) ) (2) The differential current sense ratio dkilis is defined by: I L2 – IL1 d k ILIS = -------------------------------------------I IS ( IL2 ) – IIS ( I L1 ) (3) If the high side drain current is zero (ISD(HS) = 0A) the offset current IIS = IIS(offset) still will be driven. The external resistor RIS determines the voltage per IS output current. The voltage can be calculated by VIS = RIS . IIS. In case of a fault condition the status output is connected to a current source which is independent of the load current and provides IIS(lim). The maximum voltage at the IS pin is determined by the choice of the external resistor and the supply voltage. In case of current limitation the IIS(lim) is activated for 2 * tCLS. Data Sheet 17 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Block Description and Characteristics Normal operation: current sense mode Fault condition: error flag mode VS IIS(offset) IIS(offset) ESD-ZD IS IIS~ ILoad ESD-ZD IS IIS~ ILoad Sense output logic IIS(lim) Figure 12 VS RIS VIS Sense output logic IIS(lim) RIS VIS Sense Current and Fault Current IIS [mA] IIS(lim) lo w er dk I LIS lu e va k IS e r d IL high IIS(offset) valu e Current Sense Mode (High Side) Error Flag Mode ICLx Figure 13 Data Sheet IL [A] Sense Current vs. Load Current 18 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Block Description and Characteristics 5.4.5 Truth Table Device State Inputs Outputs Mode INH IN HSS LSS IS 0 X OFF OFF 0 1 0 OFF ON IIS(offset) LSS active 1 1 ON OFF CS HSS active Under-Voltage (UV) X X OFF OFF 0 UV lockout, reset Overtemperature (OT) or Short Circuit of HSS or LSS 0 X OFF OFF 0 Stand-by mode, reset of latch 1 X OFF OFF 1 Shut-down with latch, error detected Current Limitation Mode/ Overcurrent (OC) 1 1 OFF ON 1 Switched mode, error detected1) 1 0 ON OFF 1 Switched mode, error detected1) Normal Operation 1) Will return to normal operation after Stand-by mode tCLS; Error signal is reset after 2*tCLS (see Chapter 5.3.3) Inputs Switches Current Sense / Status Flag IS 0 = Logic LOW OFF = switched off IIS(offset) = Current sense - Offset (for conditions see table: Current Sense) 1 = Logic HIGH ON = switched on X = 0 or 1 Data Sheet CS = Current sense - high side (for conditions see table: Current Sense) 1 = Logic HIGH (error) 19 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Block Description and Characteristics 5.4.6 Electrical Characteristics - Control and Diagnostics VS = 8 V to 18 V, Tj = -40 °C to +150 °C, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Limit Values Min. Typ. Max. Unit Conditions Control Inputs (IN and INH) 5.4.1 High level Voltage INH, IN VINH(H) VIN(H) – – 1.75 1.6 2.15 2 V – 5.4.2 Low level Voltage INH, IN VINH(L) VIN(L) 1.1 1.4 – V – 5.4.3 Input Voltage hysteresis VINHHY VINHY – – 350 200 – – mV 1) 5.4.4 Input Current high level 10 30 150 µA VIN = VINH = 5.3 V 5.4.5 Input Current low level IINH(H) IIN(H) IINH(L) IIN(L) 10 25 125 µA VIN = VINH = 0.4 V 103 RIS = 1 kΩ IL1 = 10 A IL2 = 40 A VS = 13.5 V RIS = 1kΩ VINH = 0 V VS = 18V; VINH = 5 V ISD(HS) = 0 A Current Sense 5.4.6 Differential Current Sense ratio in static on-condition dkILIS = dIL / dIIS dkILIS 5.4.7 Maximum analog Sense Current, IIS(lim) Sense Current in fault Condition 5.4.8 Isense Leakage current 5.4.9 Isense offset current IISL IIS(offset) 14 19.5 25 4 5 6.5 mA – – 1 µA 30 170 385 µA IIS-offset [mA] IIS-offset [mA] 1) Not subject to production test, specified by design Tj = -40°C Tj = 25°C Tj = 150°C VS [V] Figure 14 Data Sheet T [°C] Typical Current Sense Offset Current 20 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA IIS(lim) [mA] Block Description and Characteristics Tj = 150°C Tj = 25°C Tj = -40°C VS [V] Figure 15 Data Sheet Typical characteristic of the maximum analog Sense Current in fault condition (Pos. 5.4.7.) 21 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Application Information 6 Application Information Note: The following information is given as a hint for the implementation of the device only and shall not be regarded as a description or warranty of a certain functionality, condition or quality of the device. 6.1 Application Circuit Microcontroller XC866 Reverse Polarity Protection Voltage Regulator I/O WO Reset RO Q Vdd Vss CQ 22µF D (IPD90P03P4L-04) TLE 4278G I VS CI 470nF L1 GND C1 100nF R3 10kΩ CD 47nF A/D I/O I/O I/O A/D DZ 1 10V optional R12 10kΩ BTN8982TA VS R11 10kΩ INH IN C1IS 1nF C10 1000µF C1O 2V 220nF OUT C2 O2V 220nF C1OUT 220nF SR C12 100nF Figure 16 R21 10kΩ INH IN IS C2OUT C29 220nF 100nF GND R22 10kΩ VS OUT M C19 100nF IS R112 1kΩ BTN8982TA R212 1kΩ SR GND R111 0..51kΩ R211 0..51kΩ C2IS 1nF C22 100nF Application Circuit: H-Bridge with two BTN8982TA Note: This is a simplified example of an application circuit. The function must be verified in the real application. 6.2 Layout Considerations Due to the fast switching times for high currents, special care has to be taken to the PCB layout. Stray inductances have to be minimized in the power bridge design as it is necessary in all switched high power bridges. The BTN8982TA has no separate pin for power ground and logic ground. Therefore it is recommended to assure that the offset between the ground connection of the slew rate resistor, the current sense resistor and ground pin of the device (GND / pin 1) is minimized. If the BTN8982TA is used in a H-bridge or B6 bridge design, the voltage offset between the GND pins of the different devices should be small as well. Due to the fast switching behavior of the device in current limitation mode a low ESR electrolytic capacitor C10 from VS to GND is necessary. This prevents destructive voltage peaks and drops on VS. This is needed for both PWM and non PWM controlled applications. To assure efficiency of C10 and C19/ C29 the stray inductance must be low. Therefore the capacitors must be placed very close to the device pins. The value of the capacitors must be verified in the real application, taking care for low ripple and transients at the Vs pin of the BTN8982TA. The digital inputs need to be protected from excess currents (e.g. caused by induced voltage spikes) by series resistors greater than 7kΩ. Data Sheet 22 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Application Information Microcontroller I/O WO Reset RO Vdd XC866 Vss I/O I/O Reverse Polarity Protection Voltage Regulator Q CQ 22µF TLE 4278G L1 CI 470nF DZ 1 10V GND R3 10kΩ INH IN C9 100nF C10 1000µF CO 2V 220nF OUT COUT 220nF IS R12 1kΩ Figure 17 CIS 1nF R11 C2 0..51kΩ 100nF C1 100nF BTN8982TA VS R1 10kΩ VS I CD 47nF I/O R2 10kΩ D (IPD90P03P4L-04) M SR GND Application Circuit: Half-Bridge with a BTN8982TA (Load to GND) Note: This is a simplified example of an application circuit. The function must be verified in the real application. 6.3 PWM Control For the selection of the max. PWM frequency the choosen rise/fall-time and the requirements on the duty cycle have to be taken into account. We recommend a PWM-period at least 10 times the rise-time. Example: Rise-time = fall-time = 4µs. => T-PWM = 10 * 4µs = 40µs. => f-PWM = 25kHz. The min. and max. value of the duty cycle (PWM ON to OFF percentage) is determined by the real fall time plus the real rise time. In this example a duty cycle make sense from approximately 20% to 80%. If a wider duty cycle range is needed, the PWM frequency could be decreased and/or the rise/fall-time could be accelerated. Data Sheet 23 Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Package Outlines 7 Package Outlines 4.4 10 ±0.2 1.27 ±0.1 0...0.3 B 0.05 2.4 0.1 4.7 ±0.5 2.7 ±0.3 7.551) 1±0.3 9.25 ±0.2 (15) A 8.5 1) 0...0.15 7 x 0.6 ±0.1 6 x 1.27 0.5 ±0.1 0.25 M A B 8˚ MAX. 1) Typical Metal surface min. X = 7.25, Y = 6.9 All metal surfaces tin plated, except area of cut. 0.1 B GPT09114 Footprint 4.6 16.15 9.4 10.8 0.47 0.8 8.42 Figure 18 PG-TO263-7-1 (Plastic Green Transistor Single Outline Package) Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020). For further information on alternative packages, please visit our website: http://www.infineon.com/packages. Data Sheet 24 Dimensions in mm Rev. 1.0, 2013-05-17 High Current PN Half Bridge BTN8982TA Revision History 8 Revision History Initial release. Data Sheet 25 Rev. 1.0, 2013-05-17 Edition 2013-05-17 Published by Infineon Technologies AG 81726 Munich, Germany © 2013 Infineon Technologies AG All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. 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