IRS2608DSPBF_1

IRS2608DSPbF June 1, 2011 IRS2608DSPbF HALF-BRIDGE DRIVER Features • Floating channel designed for bootstrap operation Fully operational to +600 V Tolerant to negative transient voltage – dV/dt immune Gate drive supply range from 10 V to 20 V Undervoltage lockout for both channels 3.3 V, 5 V and 15 V input logic compatible Cross-conduction prevention logic Matched propagation delay for both channels High side output in phase with HIN input Low side output out of phase with LIN input Internal 530 ns dead-time Lower di/dt gate driver for better noise immunity Integrated bootstrap diode Suitable for both trapezoidal and sinusoidal motor control RoHS compliant Packages • • • • • • • • • • • • 8-Lead SOIC Applications: *Air Conditioner *Micro/Mini Inverter Drives *General Purpose Inverters *Motor Control Description The IRS2608D(S) is a high voltage, high speed power MOSFET an IGBT driver with dependent high and low side referenced output channels. Proprietary HVIC and latch immune CMOS technologies enable ruggedized monolithic construction. The logic input is compatible with standard CMOS or LSTTL output, down to 3.3 V logic. The output drivers feature a high pulse current buffer stage designed for minimum driver cross-conduction. The floating channel can be used to drive an N-channel power MOSFET or 1GBT in the high side configuration which operates up to 600 V. Typical Connection www.irf.com 1 IRS2608DSPbF Qualification Information † Qualification Level Industrial†† Comments: This IC has passed JEDEC’s Industrial qualification. IR’s Consumer qualification level is granted by extension of the higher Industrial level. MSL2, 260°C (per IPC/JEDEC J-STD-020) Class 2 (per JEDEC standard JESD22-A114) Class B (per EIA/JEDEC standard EIA/JESD22-A115) Class I, Level A (per JESD78) Yes Moisture Sensitivity Level Human Body Model ESD Machine Model IC Latch-Up Test RoHS Compliant † Qualification standards can be found at International Rectifier’s web site http://www.irf.com/ †† Higher qualification ratings may be available should the user have such requirements. Please contact your International Rectifier sales representative for further information. www.irf.com 2 IRS2608DSPbF Absolute Maximum Ratings Absolute Maximum Ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are absolute voltages referenced to COM. The thermal resistance and power dissipation ratings are measured under board mounted and still air conditions. Symbol VB VS VHO VCC VLO VIN COM dVS/dt PD RthJA TJ TS TL Definition High side floating absolute voltage High side floating supply offset voltage High side floating output voltage Low side and logic fixed supply voltage Low side output voltage Logic input voltage (HIN &LIN) Logic ground Allowable offset supply voltage transient Package power dissipation @ TA ≤ +25°C Thermal resistance, junction to ambient Junction temperature Storage temperature Lead temperature (soldering, 10 seconds) Min. -0.3 VB - 2 0 VS - 0.3 -0.3 -0.3 COM -0.3 VCC - 20 — — — — -50 — Max. 620 VB + 0.3 VB + 0.3 20 VCC + 0.3 VCC + 0.3 VCC + 0.3 50 0.625 200 150 150 300 Units V V/ns W °C/W °C Recommended Operating Conditions For proper operation the device should be used within the recommended conditions. The VS and COM offset rating are tested with all supplies biased at 15V differential. Symbol VB VS VSt VHO VCC VLO VIN TA Definition High side floating supply absolute voltage Static High side floating supply offset voltage Transient High side floating supply offset voltage High side floating output voltage Low side and logic fixed supply voltage Low side output voltage Logic input voltage Ambient temperature Min. VS +10 COM- 8(Note 1) -50 (Note2) VS 10 0 COM -40 Max. VS +20 600 600 VB 20 VCC VCC 125 Units V °C Note 1: Logic operational for VS of -8 V to +600 V. Logic state held for VS of -8 V to – VBS. Note 2: Operational for transient negative VS of COM - 50 V with a 50 ns pulse width. Guaranteed by design. Refer to the Application Information section of this datasheet for more details. www.irf.com 3 IRS2608DSPbF Dynamic Electrical Characteristics VBIAS (VCC, VBS) = 15 V, COM = VCC, CL = 1000 pF, TA = 25°C. Symbol ton toff MT tr tf DT MT MDT Definition Turn-on propagation delay Turn-off propagation delay Delay matching ton - toff Turn-on rise time Turn-off fall time Deadtime: LO turn-off to HO turn-on(DTLO-HO) & HO turn-off to LO turn-on (DTHO-LO) Delay matching time (t ON , t OFF) Deadtime matching = DTLO-HO - DTHO-LO Min Typ Max Units Test Conditions 120 120 — — — 350 — — 250 250 — 150 50 530 — — 380 380 60 220 80 800 60 60 nsec VS = 0 V VS = 0 V VS = 0 V or 600 V VS = 0 V or 600 V VIN = 0 V & 5 V Without external deadtime Static Electrical Characteristics VBIAS (VCC, VBS) = 15V, and TA = 25°C unless otherwise specified. The VIL, VIH and IIN parameters are referenced to COM and are applicable to the respective input leads: HIN and LIN. The VO, IO and Ron parameters are referenced to COM and are applicable to the respective output leads: HO and LO. Symbol VIH VIL VOH VOL ILK IQBS IQCC IIN+ IINVCCUV+ VBSUV+ VCCUVVBSUVVCCUVH VBSUVH IO+ IORbs Definition Min Typ Max Units Test Conditions — — 0.8 0.3 — 45 2.2 — 1.4 0.6 50 70 A VB = VS = 600 V VIN = 0 V or 4 V VIN = 0 V or 4 V VIN = 4 V VIN = 0 V V IO = 20 mA Logic “1” input voltage for HIN & logic “0” for LIN — Logic “0” input voltage for HIN & logic “1” for LIN 0.8 High level output voltage, VBIAS - VO Low level output voltage, VO Offset supply leakage current Quiescent VBS supply current Quiescent VCC supply current Logic “1” input bias current Logic “0” input bias current VCC and VBS supply undervoltage positive going threshold VCC and VBS supply undervoltage negative going threshold Hysteresis Output high short circuit pulsed current Output low short circuit pulsed current Bootstrap resistance — — — — 1000 1700 3000 — — 8.0 7.4 — 120 250 — 15 10 8.9 8.2 0.7 200 350 200 30 20 9.8 9.0 — — V mA — — Ohm VO = 0 V, PW ≤ 10 us VO = 15 V, PW ≤ 10 us www.irf.com 4 IRS2608DSPbF Functional Block Diagrams www.irf.com 5 IRS2608DSPbF Lead Definitions Symbol HIN LIN VB HO VS VCC LO COM Description Logic input for high side gate driver output (HO), in phase Logic input for low side driver output (LO), out of phase High side floating supply High side gate drive output High side floating supply return Low side and logic fixed supply Low side gate drive output Low side return Lead Assignments 1 2 3 4 VCC HIN LIN VB HO VS LO 8 7 6 5 COM 8 Lead SOIC IRS2608DS www.irf.com 6 IRS2608DSPbF Application Information and Additional Details Informations regarding the following topics are included as subsections within this section of the datasheet. • • • • • • • • • • • • IGBT/MOSFET Gate Drive Switching and Timing Relationships Deadtime Matched Propagation Delays Input Logic Compatibility Undervoltage Lockout Protection Shoot-Through Protection Integrated Bootstrap Functionality Negative VS Transient SOA PCB Layout Tips Integrated Bootstrap FET limitation Additional Documentation IGBT/MOSFET Gate Drive The IRS2608D HVICs are designed to drive MOSFET or IGBT power devices. Figures 1 and 2 illustrate several parameters associated with the gate drive functionality of the HVIC. The output current of the HVIC, used to drive the gate of the power switch, is defined as IO. The voltage that drives the gate of the external power switch is defined as VHO for the high-side power switch and VLO for the low-side power switch; this parameter is sometimes generically called VOUT and in this case does not differentiate between the high-side or low-side output voltage. VB (or VCC) VB (or VCC) IO+ HO (or LO) + HO (or LO) VHO (or VLO) VS (or COM) VS (or COM) IO- Figure 1: HVIC sourcing current Figure 2: HVIC sinking current www.irf.com 7 IRS2608DSPbF Switching and Timing Relationships The relationships between the input and output signals of the IRS2608D are illustrated below in Figures 3, 4. From these figures, we can see the definitions of several timing parameters (i.e., PW IN, PW OUT, tON, tOFF, tR, and tF) associated with this device. LIN 50% ton 50% toff 90% 90% tr tf LO 10% 10% Figure 3: Switching time waveforms Figure 4: Input/output timing diagram Deadtime This family of HVICs features integrated deadtime protection circuitry. The deadtime for these ICs is fixed; other ICs within IR’s HVIC portfolio feature programmable deadtime for greater design flexibility. The deadtime feature inserts a time period (a minimum deadtime) in which both the high- and low-side power switches are held off; this is done to ensure that the power switch being turned off has fully turned off before the second power switch is turned on. This minimum deadtime is automatically inserter whenever the external deadtime is shorter than DT; external deadtimes larger than DT are not modified by the gate driver. Figure 5 illustrates the deadtime period and the relationship between the output gate signals. The deadtime circuitry of the IRS2608D is matched with respect to the high- and low-side outputs. Figure 5 defines the two deadtime parameters (i.e., DTLO-HO and DTHO-LO); the deadtime matching parameter (MDT) associated with the IRS2608D specifies the maximum difference between DTLO-HO and DTHO-LO. Matched Propagation Delays The IRS2608D family of HVICs is designed with propagation delay matching circuitry. With this feature, the IC’s response at the output to a signal at the input requires approximately the same time duration (i.e., tON, tOFF) for both the low-side channels and the high-side channels; the maximum difference is specified by the delay matching parameter (MT). The propagation turn-on delay (tON) of the IRS2608D is matched to the propagation turn-on delay (tOFF). www.irf.com 8 IRS2608DSPbF Figure 5: Delay Matching Waveform Definition Input Logic Compatibility The inputs of this IC are compatible with standard CMOS and TTL outputs. The IRS2608D has been designed to be compatible with 3.3 V and 5 V logic-level signals. The IRS2608D features an integrated 5.2 V Zener clamp on the /LIN. Figure 6 illustrates an input signal to the IRS2608D, its input threshold values, and the logic state of the IC as a result of the input signal. LIN Input Signal Input Signal (IRS23364D) V IH VIL Input Logic Level Input Logic Level High Low Low Figure 6: HIN & LIN input thresholds www.irf.com 9 IRS2608DSPbF Undervoltage Lockout Protection This family of ICs provides undervoltage lockout protection on both the VCC (logic and low-side circuitry) power supply and the VBS (high-side circuitry) power supply. Figure 7 is used to illustrate this concept; VCC (or VBS) is plotted over time and as the waveform crosses the UVLO threshold (VCCUV+/- or VBSUV+/-) the undervoltage protection is enabled or disabled. Upon power-up, should the VCC voltage fail to reach the VCCUV+ threshold, the IC will not turn-on. Additionally, if the VCC voltage decreases below the VCCUV- threshold during operation, the undervoltage lockout circuitry will recognize a fault condition and shutdown the high- and low-side gate drive outputs, and the FAULT pin will transition to the low state to inform the controller of the fault condition. Upon power-up, should the VBS voltage fail to reach the VBSUV threshold, the IC will not turn-on. Additionally, if the VBS voltage decreases below the VBSUV threshold during operation, the undervoltage lockout circuitry will recognize a fault condition, and shutdown the high-side gate drive outputs of the IC. The UVLO protection ensures that the IC drives the external power devices only when the gate supply voltage is sufficient to fully enhance the power devices. Without this feature, the gates of the external power switch could be driven with a low voltage, resulting in the power switch conducting current while the channel impedance is high; this could result in very high conduction losses within the power device and could lead to power device failure. Figure 7: UVLO protection Shoot-Through Protection The IRS2608D high-voltage ICs is equipped with shoot-through protection circuitry (also known as cross-conduction prevention circuitry). www.irf.com 10 IRS2608DSPbF Integrated Bootstrap Functionality The IRS2608D embeds an integrated bootstrap FET that allows an alternative drive of the bootstrap supply for a wide range of applications. A bootstrap FET is connected between the floating supply VB and VCC (see Fig. 8). Vcc BootFet Vb Figure 8: Semplified BootFET connection The bootstrap FET is suitable for most PWM modulation schemes, including trapezoidal control, and can be used either in parallel with the external bootstrap network (diode+ resistor) or as a replacement of it. The use of the integrated bootstrap as a replacement of the external bootstrap network may have some limitations in the following situations: • W hen the motor runs at a very low current (so that the negative phase voltage decay can be longer than 20us) and complementary PWM is not used. • At a very high PWM duty cycle due to the bootstrap FET equivalent resistance (RBS, see page 3). The summary for the bootstrap state follows: • Bootstrap turns-off (immediately) or stays off when at least one of the following conditions are met: 1- HO goes/is high 2- VB goes/is high (> 1.1*VCC) • Bootstrap turns-on when: 1- LO is high (low side is on) AND VB is low (< 1.1(VCC)) 2- LO and HO are low after a LIN transition from H to L (HB output is in tri-state) AND VB goes low ( 0 AND In the absence of a VCC bias, the integrated bootstrap FET voltage blocking capability is compromised and a current conduction path is created between VCC & VB pins, as illustrated in Fig.22 below, resulting in power loss and possible damage to the HVIC. www.irf.com 16 IRS2608DSPbF Figure 22: Current conduction path between VCC and VB pin Relevant Application Situations: The above mentioned bias condition may be encountered under the following situations: • In a motor control application, a permanent magnet motor naturally rotating while VCC power is OFF. In this condition, Back EMF is generated at a motor terminal which causes high voltage bias on VS nodes resulting unwanted current flow to VCC. • Potential situations in other applications where VS/VB node voltage potential increases before the VCC voltage is available (for example due to sequencing delays in SMPS supplying VCC bias) Application Workaround: Insertion of a standard p-n junction diode between VCC pin of IC and positive terminal of VCC capacitors (as illustrated in Fig.23) prevents current conduction “out-of” VCC pin of gate driver IC. It is important not to connect the VCC capacitor directly to pin of IC. Diode selection is based on 25V rating or above & current capability aligned to ICC consumption of IC - 100mA should cover most application situations. As an example, Part number # LL4154 from Diodes Inc (25V/150mA standard diode) can be used. VCC VCC VCC Capacitor VB VSS (or COM) Figure 23: Diode insertion between VCC pin and VCC capacitor Note that the forward voltage drop on the diode (VF) must be taken into account when biasing the VCC pin of the IC to meet UVLO requirements. VCC pin Bias = VCC Supply Voltage – VF of Diode. www.irf.com 17 IRS2608DSPbF Additional Documentation Several technical documents related to the use of HVICs are available at www.irf.com; use the Site Search function and the document number to quickly locate them. Below is a short list of some of these documents. DT97-3: Managing Transients in Control IC Driven Power Stages AN-1123: Bootstrap Network Analysis: Focusing on the Integrated Bootstrap Functionality DT04-4: Using Monolithic High Voltage Gate Drivers AN-978: HV Floating MOS-Gate Driver ICs www.irf.com 18 IRS2608DSPbF Parameters trend in temperature Figures 24-43 provide information on the experimental performance of the IRS2608D(S) HVIC. The line plotted in each figure is generated from actual lab data. A large number of individual samples from multiple wafer lots were tested at three temperatures (-40 ºC, 25 ºC, and 125 ºC) in order to generate the experimental (Exp.) curve. The line labeled Exp. consist of three data points (one data point at each of the tested temperatures) that have been connected together to illustrate the understood trend. The individual data points on the curve were determined by calculating the averaged experimental value of the parameter (for a given temperature). Turn-On Propagation Delay (ns) 500 400 300 200 100 0 -50 -25 0 25 50 o Exp. Turn-Off Propagation Delay (ns) 500 400 300 200 100 0 -50 -25 0 25 50 75 100 125 Temperature (oC) Exp. 75 100 125 Temperature ( C) Fig. 24 Turn-on Propagation Delay vs. Temperature Turn-On Rise Time (ns) Turn-Off fall Time (ns) Fig. 25. Turn-off Propagation Delay vs. Temperature 125 100 75 50 Exp. 250 200 150 100 Exp. 50 0 -50 -25 0 25 50 o 25 0 75 100 125 -50 -25 0 25 50 o 75 100 125 Temperature ( C) Temperature ( C) Fig. 26. Turn-on Rise Time vs. Temperature Fig. 27. Turn-off Rise Time vs. Temperature www.irf.com 19 IRS2608DSPbF 4 4 VCCUV hysteresis (V) 2 V BSUV hysteresis (V) 3 3 2 1 0 1 0 -50 Exp. Exp. -25 0 25 50 o 75 100 125 -50 -25 0 25 50 o 75 100 125 Temperature ( C) Temperature ( C) Fig. 28. VCC Supply UV Hysteresis vs. Temperature 10 VCC Quiescent Current (mA) 8 6 4 2 0 -50 -25 0 25 50 o Exp. Fig. 29. VBS Supply UV Hysteresis vs. Temperature 100 VBS Quiescent Current ( A) 80 60 Exp. 40 20 0 -50 -25 0 25 50 o 75 100 125 75 100 125 Temperature ( C) Temperature ( C) Fig. 30. VCC Quiescent Supply Current vs. Temperature 12 Exp. Fig. 31 VBS Quiescent Supply Current vs. Temperature 12 VCCUV+ Threshold (V) VCCUV- Threshold (V) 9 6 9 6 Exp. 3 0 -50 -25 0 25 50 o 3 0 75 100 125 -50 -25 0 25 50 o 75 100 125 Temperature ( C) Temperature ( C) Fig. 32. VCCUV+ Threshold vs. Temperature Fig. 33. VCCUV- Threshold vs. Temperature www.irf.com 20 IRS2608DSPbF 12 Exp. 12 V BSUV+ Threshold (V) 6 VBSUV- Threshold (V) 9 9 6 Exp. 3 0 -50 -25 0 25 50 o 3 0 75 100 125 -50 -25 0 25 50 o 75 100 125 Temperature ( C) Temperature ( C) Fig. 34. VBSUV+ Threshold vs. Temperature 400 Low Level Output Voltage (mV) Fig. 35 VBSUV- Threshold vs. Temperature 400 High Level Output Voltage (mV) 300 200 EXP. 300 200 Exp. 100 0 -50 -25 0 25 50 o 100 0 -50 -25 0 25 50 o 75 100 125 75 100 125 Temperature ( C) Temperature ( C) Fig. 36. Low Level Output Voltage vs. Temperature Fig. 37. High Level Output Voltage vs. Temperature 8 500 Bootstrap Resistance ( ) 400 300 200 Exp. LIN VTH+ (V) 6 4 Exp. 100 0 -50 -25 0 25 50 o 2 0 75 100 125 -50 -25 0 25 50 o 75 100 125 Temperature ( C) Temperature ( C) Fig. 38. Bootstrap Resistance vs. Temperature Fig. 39. LIN VTH+ vs. Temperature www.irf.com 21 IRS2608DSPbF 8 8 6 LIN VTH- (V) 6 HIN VTH+ (V) Exp. 4 4 Exp. 2 0 -50 -25 0 25 50 o 2 0 75 100 125 -50 -25 0 25 50 o 75 100 125 Temperature ( C) Temperature ( C) Fig. 40. LIN VTH- vs. Temperature Fig. 41. HIN VTH+ vs. Temperature 8 600 500 Tbson_VccTYP(ns) 400 300 200 100 0 -50 -25 0 25 50 75 100 125 -50 -25 0 25 50 o Exp. 6 HIN VTH- (V) 4 2 Exp. 0 Temperature (oC) 75 100 125 Temperature ( C) Fig. 42. HIN VTH- vs. Temperature Fig. 43. Tbson_VCCTYP vs. Temperature www.irf.com 22 IRS2608DSPbF Case Outlines www.irf.com 23 IRS2608DSPbF Tape and Reel Details: 8L-SOIC LOADED TAPE FEED DIRECTION B A H D F C NOTE : CONTROLLING DIM ENSION IN M M E G CARRIER TAPE DIMENSION FOR Metric Code Min Max A 7.90 8.10 B 3.90 4.10 C 11.70 12.30 D 5.45 5.55 E 6.30 6.50 F 5.10 5.30 G 1.50 n/a H 1.50 1.60 8SOICN Imperial Min Max 0.311 0.318 0.153 0.161 0.46 0.484 0.214 0.218 0.248 0.255 0.200 0.208 0.059 n/a 0.059 0.062 F D C E B A G H REEL DIMENSIONS FOR 8SOICN Metric Code Min Max A 329.60 330.25 B 20.95 21.45 C 12.80 13.20 D 1.95 2.45 E 98.00 102.00 F n/a 18.40 G 14.50 17.10 H 12.40 14.40 Imperial Min Max 12.976 13.001 0.824 0.844 0.503 0.519 0.767 0.096 3.858 4.015 n/a 0.724 0.570 0.673 0.488 0.566 www.irf.com 24 IRS2608DSPbF ORDER INFORMATION 8-Lead SOIC IRS2608DSPbF 8-Lead SOIC Tape & Reel IRS2608DSTRPbF The information provided in this document is believed to be accurate and reliable. However, International Rectifier assumes no responsibility for the consequences of the use of this information. International Rectifier assumes no responsibility for any infringement of patents or of other rights of third parties which may result from the use of this information. No license is granted by implication or otherwise under any patent or patent rights of International Rectifier. The specifications mentioned in this document are subject to change without notice. This document supersedes and replaces all information previously supplied. For technical support, please contact IR’s Technical Assistance Center http://www.irf.com/technical-info/ WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 www.irf.com 25 IRS2608DSPbF Revision History Revision Date Comments/Changed items 1.5 03-17-08 Added application note to include negative Vs curve 1.6 03-17-08 Added Qualification Information on Page 2, Disclaimer information on Page 25, and updated information on Pages 21-23 1.7 03-21-08 Removed revision letter from JEDEC standards under Qualification Information table. 1.8 04-18-08 Removed “Available in LEAD-FREE” from front page, replaced with “RoHS compliant”, changed latch up level to A, Changed bootstrap turn-on at point 3 from LIN to HIN, added MT parameter into datasheet. 1.9 05-08-08 Added “Suitable for both trapezoidal and sinusoidal motor control” in page 1. 06-18-08 Corrected internal dead time on front page to 530ns instead of 540ns. www.irf.com 26