 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| L9911 CAR ALTERNATOR MULTIFUNCTION SMART VOLTAGE REGULATOR PRELIMINARY DATA 1 Features FULLY MONOLITHIC DESIGN HIGH SIDE FIELD DRIVER THERMAL PROTECTION FIELD SHORT CIRCUIT PROTECTION PROTECTED DIAGNOSTIC LAMP DRIVER PROTECTED HIGH SIDE RELAY DRIVER COMPLEX DIAGNOSTICS LOAD RESPONSE CONTROL DFM OUTPUT (FIELD MONITOR) Figure 1. Package Multiwatt8 Table 1. Order Codes Part Number L9911A L9911B Package Multiwatt8 Multiwatt8 Features See Table.9 See Table.9 2 Description The L9911 is a monolithic multifunction alternator voltage regulator intended for use in automotive application. It includes the control section, the field power stage, fault diagnostic circuit which drives a warning lamp, and the protection against short circuits. 3 Circuit Operation ance so high to cause a superimposed ripple on the alternator voltage higher than 5-6V. Consequently it doesn't need, in the standard application, any external component. Anyway an external capacitor (2.2F) must be inserted between A+ and ground when using the device with very long cables. 3.2 PROTECTION It is present a protection against short circuits of the lamp and the relay power drivers (L) and of the field power driver (F+), a thermal drivers shutdown protection and an overvoltage protection of L power drivers. 3.3 DIAGNOSIS The circuit detects fault conditions related to the phase and F+ status and receives informations from one of the three alternator phases. In order to prevent spurious indications, fault warnings are not displayed immediately but are dalayed by a fixed time. 3.4 LOAD RESPONSE CONTROL The internal circuit regulates the soft start characteristics (activated always at engine start) and the soft attack characteristics. Rev. 3 1/15 The alternator's voltage regulator performs the following main functions: - 1) voltage regulation - 2) protection - 3) control fault diagnosis - 4) load response control 3.1 VOLTAGE REGULATION The alternator voltage is compared with a reference voltage in an amplifier, whose output determines the switching frequency of output power MOS whose current excites the coil of the alternator; as the regulator is in fixed-frequency topology, the field switching frequency does not depend on the alternator characteristics. The regulators have an integrated filter in the voltage sensing path guaranteeing the correct behaviour of the devices also when the rectifier diodes feature very high switching spikes. The internal filtering allows the usage of the device also with very long cables connecting the alternator to the battery with an imped- November 2005 This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. L9911 Figure 2. Pin Connection (Top view) 123456 78 P GND-case DFM RES. RES. L F+ B+ Table 2. Pin Descriptions N 1 2 3 4 5 6 7 8 Pin P DFM RES. L GND-case RES. F+ B + Function Phase sense input. Field monitor output. Reserved. Lamp terminal low side driver; relay terminal high side driver. Ground. Reserved. High side driver output. Sensed power supply. Table 3. Absolute Maximum Ratings (Tj = -40 to 150C, unless otherwise specified) Symbol VS Parameter DC Supply Voltage (2 min. @ 25C) Transient Supply Voltage (load dump) [see application circuit] t<500ms Transient Supply Voltage (low energy spikes) [see application circuit] ISO7637-1 pulse 1,2,3 /ISO7637-3 Tj Tstg, Tcase Ptot Junction temperature range Storage and case temperature range Total power Dissipation (@ Tcase 150C, Ifield 5A) Reverse Battery Voltage (see application diagram) @ 25C, T = 15 sec Normal working condition reverse voltage (P vs. GROUND) DC Pin Current on F+, B+, GND (bonding limitation) ESD Voltage MILSTD883C (All pins vs.GND) Value 24 40 60 -40 to 150 -40 to 150 4 -2.5 -1.5 15 4 Unit V V V C C W V V A KV Table 4. Thermal Data Symbol Rth j-case Parameter Thermal resistance junction to case Value 1.5 Unit C/W 2/15 L9911 Table 5. ELECTRICAL CHARACTERISTCS (Tj = -40C to 150C; unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit Vbat Ib-sinked Ib-stby Vreg 1 Vreg 2 Vreg 3 Delta Vrpm Delta Vload Vreg-less Vov-p Operating Supply Voltage Supply Battery Current Stand-by Current Regulated Voltage & Thermal Drift. 3 configurations available, selectable by mask option (see Table.8). B+ = 12.5V, F+ = 0V Ialt=1A-0.9*Inom; Tcase=20C; 1400 18 25 500 V mA A 14.0 -4.5 14.35 -11.8 14.35 -6 14.4 -3.5 14.5 -10 14.5 -4 14.8 -2.5 14.65 -8.2 14.65 -2 200 250 V mV/C V mV/C V mV/C mV mV V V 12 18 16 22 Vov-d Tj-sd Tj-sd-dwn Vuv-1 Vuv-up VF+_sat Vf If_SCTH VB+ to turn on L low side driver at VF+ > VS1 Temperature to disable F+, DFM, L (high & low side drivers) L/F+/DFM from OFF STATE (due to thermal shutdown) to ON STATE VB+ to turn on L low side driver VB+ to turn off L low side driver Vreg 5% 160 Tj-sd10 7.7 Vuv + 0.40 Vreg 175 Vreg + 5% 190 Tj-sd-2 V C C V V V V V A A A V Hz % s s 8.6 Vuv + 0.50 9.5 Vuv + 0.60 0.6 0.55 2 Field driver saturation voltage Tj = 150C; I = 4.5A Tj = 25C; I = 7A Freewheeling diode F+ Field short circuit driver protection threshold current (see fig. 16 Field driver ON-state detection Pre-excitation frequency Pre-excitation Field driver ON-duty Output Voltage Rise Time Output Voltage Fall Time Field switching frequency Output Field Driver Leakage Current Ifield = 3A resistive (Fig. 7) Ifield = 3A resistive (Fig. 7) Ialt=1A~0.9*Inom;1400rpm Vs1 f-pre Duty-pre t-rise t_fall Fsw_F+ If_leak Hz A 3/15 L9911 Table 5. ELECTRICAL CHARACTERISTCS (continued) (Tj = -40C to 150C; unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit DUTY-PR VH_SAT VL_SAT VLSB IHSC ILSC VthL Ipd_L Phase regulation max field ON duty High Side Driver Saturation Voltage (Fig. 10) Low Side Driver Saturation Voltage (Fig. 10) Selfbias without supply Lamp driver Voltage High Side Driver short circuit current protection Low Side Driver short circuit current (see fig. 16) Enable Regulator Supply Voltage Threshold L terminal Pull-down Current when the generator is not rotating L sink current when the generator is rotating Diagnostic Alarm Delay Time Fig. 8 With driver Isource=500mA With driver Isink=500mA B+ open; L connected to 12V through a 50 Ohm resistor B+ = 12.5V; L = GND B+ = L = 12.5V 26.56 31.25 35.94 1.5 1.5 4 % V V V A A 1.2 1 0.8 3 2 1.15 3.5 VL = 0.6V 0.4 mA I_L_sink t-D P frequency 500Hz; VB+ = 12V 0.2 (Fig. 11) (Fig. 11) square wave f = 1KHz square wave f = 1KHz 50 8 6.4 50 VP = 0.8V Ialt=1A~0.9*Inom;1400rpm A s V ms Vcan-DFM Test mode to cancel soft start/ attack (voltage) tcan-DFM VPHL1 VPHL2 t_PHL1 VPHH1 VPHH2_1 tPHd I_Pd-P1 f-dfm VL-DFM Test mode delay time Enable control voltage input high threshold Enable control voltage input low threshold Enable Control Voltage Phase Filtering Time Diagnosis phase loss input high threshold Diagnosis phase loss input low threshold Diagnostic Phase Filtering Time Phase Pull-down Current DFM Output open drain switching freq. 0.35 0.25 115 10 8.4 100 8 200 1.5 50 400 5 50 50 V V s V V s mA Hz V mA A s s Output low voltage saturation I-sink=14mA I-SC_DFM Short circuit current protection Ilk-DFM t-TM t-TD Output leakage current Output voltage rise time Output voltage fall time 4/15 L9911 Table 6. Load Response Control Parameters Symbol Parameter Test Condition Min. Typ. Max. Unit t_ST_1 t_ST_2 Soft Start Delay Time (Fig. 13) 2 steps available, selectable by mask option (see Table.7). Soft Attack Time / Soft Start Time (Fig. 13). 2 steps available, selectable by mask option (see Table 7). Reset frequency range to enable regulation; Frequency judged after 4 periods (Fig. 12) Soft start enable (EN) and LRC disable (DISAB) frequency ranges. 4 configurations available, selectable by mask option (possible combinations in Table 8). Always activated at engine start. Frequencies judged after 4 periods (Fig. 12) Activated always at engine start 1.73 0 2 2.35 s t_SL_1 t_SL_2 From 0 to 100% field duty cycle 2.13 7.65 2.5 9 2.87 10.35 s EN-RES (constant) 40 50 60 Hz EN-1 EN-2 EN-3 EN-4 DISAB-1 DISAB-2 DISAB-3 DISAB-4 Tj = 25C Tj = -40 to150C Tj = 25C Tj = -40 to150C Tj = 25C Tj= -40 to150C Tj = 25C Tj = -40 to150C Tj = 25C Tj = -40 to150C Tj = 25C Tj = -40 to150C Tj = 25C Tj = -40 to150C Tj = 25C Tj = -40 to150C 108 102 131 124 144 136 174 165 270 255 315 298 367 347 420 397 120 120 145 145 160 160 193 193 300 300 350 350 408 408 466 466 132 138 159 166 176 184 212 221 330 345 385 402 449 469 512 535 Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Table 7. Load Response Control Timing Options t_SL = 2.5s t_ST = 0s t_ST = 2s LRC-A LRC-C t_SL = 9s LRC-D LRC-B Table 8. Correspondence of Frequency (typical values) to Application Features Alternator Revolution Speed (rpm) Typical Configuration A (Config-A) Typical Configuration B (Config-B) Typical Configuration C (Config-C) Initiate Regulation LRC Cut Initiate Regulation LRC Cut Initiate Regulation LRC Cut 1200 3000 1450 3000 1450 3500 6 Pole Pairs EN-1 DISAB-1 EN-2 DISAB-1 EN-2 DISAB-2 8 Pole Pairs EN-3 DISAB-3 EN-4 DISAB-3 EN-4 EN-4 Considering the overall WW application scenario, there is a direct correspondence between Typical Configurations A/B and regulation curve Vreg-1, and between Typical Configuration C and regulation curves Vreg-2 and Vreg-3. This is allowing the summary of all possible customizations for L9911 in the table below. 5/15 L9911 Table 9. Customization of L9911: Combination of LRC, Regulation, and Application Options Vreg-1 / Config-A LRC Timing options Vreg-1 / Config-B 6 Pole Pairs nya L9911A nya nya 8 Pole Pairs nya nya nya nya Vreg-2 / Config-C 6 Pole Pairs nya nya nya nya 6 Pole Pairs nya nya nya nya Vreg-3 / Config-C 6 Pole Pairs nya nya nya nya 6 Pole Pairs nya nya nya nya 6 Pole Pairs L9911B nya Nya nya 8 Pole Pairs nya nya nya nya LRC-A LRC-B LRC-C LRC-D Figure 3. Vreg-1 15.2 15.1 15 14.9 14.8 14.7 14.6 14.5 14.4 V 14.3 14.2 14.1 14 13.9 13.8 13.7 13.6 13.5 13.4 -40 -30 -20 -10 0 10 20 30 40 50 T 60 70 80 90 100 110 120 130 140 150 Max. Typ. Min. 14.06V~14,91V @ -5C 14.00V~14.80V @ 20C 13.42V~14,48V @ 150C Figure 4. Vreg-2 15.1 15 14.9 14.8 14.7 14.6 14.5 14.4 14.3 14.2 14.1 14 13.9 13.8 13.7 13.6 13.5 13.4 13.3 13.2 13.1 13 12.9 -10 50 30 10 20 60 65 55 70 -25 -20 -40 -35 -30 -15 40 45 75 80 85 90 95 0 5 100 105 110 115 120 125 130 135 140 145 150 -5 15 25 35 Max. V Typ. Min. 12.8 14.60V~15.00V @ -5C 14.35V~14.65V @ 23C 12.85V~13.66V @ 150C T 6/15 L9911 Figure 5. Vreg-3 15.1 15 14.9 14.8 14.7 14.6 14.5 14.4 14.3 14.2 14.1 14 13.9 13.8 13.7 13.6 13.5 -40 -30 -20 -10 0 10 20 30 40 50 T 60 70 80 90 100 110 120 130 140 150 Max. Typ. V Min. 14.41V~14.82V @ -5C 14.35V~14.65V @ 23C 13.59V~14.40V @ 150C Figure 6. Output Voltage rise/fall time (F+, DFM) 90% F+ DFM Voltage 10% t-rise t-TM t-fall t-TD 7/15 L9911 Figure 7. Phase Regulation Characteristics on Engine off on Ign. Switch off on W/Lamp off t_ST t_SL Load ON Ifield F+/DFM Field Preexcitation Field Regulation PRINCIPLE OF PHASE REGULATION: When VB+ is above the regulated voltage, the field driver is controlled to keep phase peak voltage from falling below VPHH1. If phase peak voltage drops below VPHL1, phase regulation does not work. Figure 8. Application Diagram ignition switch warning lamp _ B+ L + C F+ Stator Field P GND DFM to E.C.U. L9911 +Vb / Vcc 8/15 L9911 Figure 9. High Side/Low side driver saturation B+ Regulator Assy L9911 Control Circuit L Figure 10. Test mode to cancel soft start/attack DFM FILTER (tcan) COMP Vcan AND LATCH CANCEL Figure 11. Soft-start enable frequency range EN-1~4 SOFT-START ENABLE FREQUENCY { CONSTANT (50HZ) EN-RES 9/15 L9911 Figure 12. Soft start characteristics (always activated at engine start) Ign. sw on off 0.5s min Engine speed (rpm) (soft attack inhibition Alt. speed) 0.5s min Time (sec) (soft start enable Alt. speed) Time (sec) Soft start timing Soft start timing Soft start timing Field current (A) Soft start delay time Soft start delay time Soft start delay time 0.15s~0.5s Time (sec) W/Lamp 0.15s~0.5s on off Starter on Ign. sw on E/G stop and Ign. sw off E/G stop Starter on Ign. sw on Starter on Time (sec) Engine start Soft attack inhibition Alt. speed > E/G speed Engine start Soft attack inhibition Alt. speed < E/G speed Engine restart 10/15 L9911 Figure 13. Soft Start/attack Characteristics on Engine off on Ign. Switch off on W/Lamp off t_ST t_SL Load ON Ifield F+/DFM Field Preexcitation Field Regulation Table 10. Fault Detection Root Cause Signal Effect Test detect Alternator belt breaking Brushes open Field Driver Open Field interruption Field short circuit to the battery Field short circuit to the ground Battery discharge P P P P F+ P B+ Alternator disexcitation Alternator disexcitation Alternator disexcitation Alternator disexcitation Overvoltage Alternator disexcitation Undervoltage VP Figure 14. DFMonitor Electrical configuration L9911 Regulator assy B+ Valim Alternator Field Control Circuit F+ DFM R to the ECU Field driver DFMon driver Test circuit 11/15 L9911 Figure 15. Short circuit drivers' protection Current short circuit (Field driver, Relay driver, DFMon driver) T< 25ms Current short circuit (Lamp driver) Filtering time Retry time Field driver, DFmon driver and Relay driver are protected in switching mode (not linear), with a retry time less than 25ms. Lamp driver is protected in linear mode, with a retry time of 1s. 12/15 L9911 4 Package Information In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 16. Multiwatt8 Mechanical Data & Package Dimensions mm DIM. MIN. A B C E F G G1 H1 H2 L L2 L3 L4 L7 S S1 U Z Dia1 20.35 17.05 17.25 10.3 2.65 1.9 1.9 0.40 0.70 3.65 17.20 17.5 10.7 0.49 0.78 2.40 17.64 19.6 20.2 20.65 17.35 17.75 10.9 2.9 2.6 2.6 0.55 0.85 3.85 0.80 0.67 0.679 0.406 0.104 0.075 0.075 0.015 0.028 0.144 0.68 0.689 0.421 2.54 17.78 TYP. MAX. 5 2.65 1.6 0.55 0.85 2.68 17.92 0.019 0.030 0.094 0.69 0.772 0.795 0.81 0.68 0.699 0.429 0.114 0.102 0.102 0.022 0.034 0.152 0.10 0.70 MIN. TYP. MAX. 0.197 0.104 0.063 0.022 0.033 0.105 0.71 inch OUTLINE AND MECHANICAL DATA Multiwatt8 (Pin 5 GND) 0043696 F 13/15 L9911 Table 11. Revision History Date Revision Description of Changes June 2004 May 2005 1 2 First Issue. Modified Figure 2, Table 2 and Table 5; Updated Figure 10, 11 and 14; Add Table 7. Add ordering numbers. Updated Table 5. Added new tables 6-9. 07-Nov-2005 3 14/15 L9911 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners (c) 2005 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 15/15 |
Price & Availability of L9911
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |