L9408F Automotive multifunction smart alternator regulator Datasheet - production data Low side field driver Thermal protection Field short circuit protection Protected diagnostic lamp driver Protected high side relay driver Complex diagnostics Load response control *$3*36 DFM output (field monitor) DIE Description The L9408F is a monolithic multifunction alternator voltage regulator. Features It includes the control section, the field power stage, fault diagnostic circuit which drives a warning lamp. AEC-Q100 qualified Fully monolithic design Table 1. Device summary Order code Package Packing L9408FDIETR DIE - June 2016 This is information on a product in full production. DocID029462 Rev 1 1/14 www.st.com Contents L9408F Contents 1 Pad description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 2/14 2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 DocID029462 Rev 1 L9408F List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Pad description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Thermal compensation (Vreg, standard version). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Fault detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Application summary features (standard option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Document revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 DocID029462 Rev 1 3/14 3 List of figures L9408F List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. 4/14 Pad position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Thermal compensation diagram (Vreg, standard version) . . . . . . . . . . . . . . . . . . . . . . . . . 10 Load transient example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Start-up timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Load response control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 DFMonitor electrical configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 DocID029462 Rev 1 L9408F 1 Pad description Pad description All dimensions are in micrometers. Pad placement values correspond to each pad center coordinates. Pad placement origin is the lower left corner of the die. Table 2. Pad description Pad placements Pad dimensions Pad name X Y X Y test 4299.25 4233.25 102.5 102.5 DF 4021.625 3827.25 948.25 917.5 PVREG 4445.25 2171.75 102.5 102.5 P51 4445.25 1982.75 102.5 102.5 P52 4445.25 1793.75 102.5 102.5 P4 4414.25 1608.75 102.5 102.5 P3 4445.25 1423.25 102.5 102.5 P1 4445.25 1234.25 102.5 102.5 P2 4445.25 1044.75 102.5 102.5 P0 4445.25 856.25 102.5 102.5 P54 4380.75 680.25 102.5 102.5 P53 4445.25 504.25 102.5 102.5 P50 4364.75 334.75 102.5 102.5 OSCITEST 961.25 71.75 102.5 102.5 P13 622.75 95.25 102.5 102.5 P12 432.25 94.75 102.5 102.5 P11 243.25 94.75 102.5 102.5 P10 94.75 385.75 102.5 102.5 P9 64.75 571.25 102.5 102.5 DFM 398.5 1546.5 762.0 685.0 TW 1248.25 3029.75 128.5 128.5 GND 1950.0 3187.0 685.0 762.0 PH 398.5 5105.5 762.0 685.0 D+ 1319.25 6244.5 933.0 963.5 A+ 2888.25 6243.0 933.0 963.5 DocID029462 Rev 1 5/14 13 Pad description L9408F Figure 1. Pad position 6/14 DocID029462 Rev 1 L9408F Electrical specifications 2 Electrical specifications 2.1 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol Value Unit DC supply voltage (2 min. @ 25 C) 24 V - Transient supply voltage (load dump); t <500 ms @ 25 C 40 V - Transient supply voltage (low energy spikes pulse ISO7637/1 60 V Total power dissipation (@ Tcase = 150 C, Ifield = 5 A) 5 W -2.5 V VS Ptot 2.2 Parameter - Reverse voltage all pins @ 25 C, T = 15s - DC pin current on DF, A+, GND pins (bonding limitation) 11 A - ESD voltage (Human body model) 4 kV Tj Junction temperature -40 to 150 C Tstg Storage temperature -40 to 170 C Electrical characteristics Tj = -40 to 150 C; unless otherwise specified. Table 4. Electrical characteristics Symbol Vbat Parameter Test condition Min. Typ. Max Unit Operating supply voltage - 8.5 - 18 V Ib-sink Supply battery current - - - 50 mA Ib-stby Standby current Vbat = 12 V, T = 25 C - - 300 Vbat = 12 V, T = 40 C - - 500 A Vreg Regulated voltage & therm. drift (standard version) Ialt = 0.5 * Inom; rpm = 0.5 * RPMMAX; T = 20 C 14.3 -4 14.45 -3 14.6 -2 V mV/C Vreg(1) Regulated voltage & therm. drift (optional version) Ialt = 0.2 * Inom; rpm = 0.5 * RPMMAX; T = 20 C 14.1 -11.5 14.5 -10 14.9 -8.5 V mV/C Switching frequency in FSDF 30 - 400 Hz Vrpm Delta Vrpm 1800 < rpm < 12000; Ialt = 0.3 * Inom - - 200 mV Vload Delta Vload 0.1 * Inom < Ialt < 0.9 * Inom; rpm = 0.5 * RPMMAX - - 200 mV Vreg Regulated voltage without battery Ialt = 3 A resistive - - 16 V fsw DocID029462 Rev 1 7/14 13 Electrical specifications L9408F Table 4. Electrical characteristics (continued) Symbol Parameter Test condition Min. Typ. Max Unit VOV D+ drivers disable threshold Voltage on pin A+ to have D+ = OFF 18 - 22 V Tj-sd Thermal shut-down DF = Off state D+ = Off state 170 - 200 C Thermal shut-down hysteresis DF, D+ = from off state (due to thermal shutdown) to on 2 - 10 C Tj = 150 C; I = 3 A - - 230 m Tj = 25 C; I = 1 A - - 130 m IF = 5 A - - 2 V DF = 12 V; T = -40 to 25 C 8.5 - 18 DF = 12 V; T = 25 to 125 C 7 - 18 2.1 - 3.9 V 10.62 12.5 14.38 % Tj-sd-hys Ron Low side driver Rdson VF Freewheeling diode DF IfSC(2) Short circuit threshold DF A Vs1 Output short to ground threshold DF - FSDF Pre-excitation F.S.D.F f = 348 Hz 15% tST Soft start delay time Activated at first running-on only - 0 tSL Soft attack time From 0 to 100% field duty cycle 2.5 2.88 3.39 s Bl Soft attack blind zone % of maximum D.C. immediate variation of soft attack 0 - 10 % 5 - 50 5 - 50 s trise Output voltage rise time tfall Output voltage fall time Iflk Output field driver leakage current DF = 24 V - - 1 mA VHS High side driver saturation voltage Isource = 1 A - - 1.2 V VLS Low side driver saturation voltage Isink = 0.25 A - - 1.5 V VLSB Self bias without supply lamp driver voltage - - - 4 V IHSC High side current limitation A+ = 17.5 V; D+ = GND 1.2 - 3 A ILSC Low side current limitation A+ = D+ = 17.5 V 0.45 - 1.5 A VthD+ Enable regulator voltage D+ - 0.8 1 1.15 V IthD+ Enable regulator pull-down current - 0.4 - 3.5 mA Soft attack inhibition frequency - 265 313 360 Hz EN1 Soft start delay time enable frequency - 88 104 120 Hz EN1_hy Soft start delay time enable frequency hysteresis - EN1-8 EN1-10 EN1-12 Hz DISAB 8/14 Ifield = 3 A resistive DocID029462 Rev 1 s L9408F Electrical specifications Table 4. Electrical characteristics (continued) Symbol Parameter Test condition VPHL1 Enable control voltage PH high threshold VPHL2 Enable control voltage PH low threshold tPH Square wave 1 kHz Typ. Max Unit 0.67 0.795 0.92 V VPHL1 -0.66 V VPHL1 VPHL1 -0.48 -0.57 - 15 - 120 s VPHH1 Diag. phase loss high voltage - 9 10.25 11.5 V VPHH2 Diag. phase loss low voltage - 4 5 6 V tPHD Diagnostic PH filtering time - 50 - 200 s IPH Phase pull-down current - 1 - 8 mA tD Diagnostic alarm delay - 0.48 0.575 0.65 s DFM open drain switching frequency in FSDF 30 - 400 Hz Vol Output low voltage DFM Isink = 25 mA - - 1.5 V Idfml Short circuit protection DFM VDF_MON = 12 V 25 - 200 mA Ilk Output leakage current DFM VDF_MON = 24 V - - 0.1 mA t_TM DFM output voltage rise time R = 2.7 k; C = 1 nF; Valim = 13.5 V 0.05 - 50 s T_TD DFM output voltage fall time R = 2.7 k; C = 1 nF; Valim = 13.5 V 0.05 - 50 s fDFM PH filtering time Min. 1. Available through a metal option of the actual device. 2. Not tested on the die version. Figure 2. Application diagram TO /HM KEY WARMING LAMP ! $ n ,& $& 0( '.$ 6B 6CC $&- *$3*36 DocID029462 Rev 1 9/14 13 Electrical specifications L9408F Table 5. Thermal compensation (Vreg, standard version) Vreg Temperature [C] Min. [V] Typ. [V] Max. [V] -40 14.43 14.645 14.86 25 14.30 14.45 14.60 125 13.90 14.15 14.40 Figure 3. Thermal compensation diagram (Vreg, standard version) 6REG 6 -IN 4YP -AX 4%-0%2!452% # *$3*36 Figure 4. Load transient example 6" )ALT *$3*36 10/14 DocID029462 Rev 1 L9408F Electrical specifications Figure 5. Start-up timing RQ (QJLQH RII ,JQ.H\ RII RQ RQ 9/DPS 1RUPDOGLDJQRVWLFEHKDYLRXU RII WB'/ WB6/ WB67 ,ILHOG %, ')')0 )LHOGSUHH[FLWDWLRQ )LHOGUHJXODWLRQ *$3*36 Table 6. Fault detection Root cause Signal Effect Test detect Alternator belt breaking PH Alternator dis-excitation VPH<VPHH & VA+<Vreg Brushes open PH Alternator dis-excitation VPH<VPHH & VA+<Vreg Field interruption PH Alternator dis-excitation VPH<VPHH & VA+<Vreg Field short circuit to the battery PH Alternator dis-excitation VPH<VPHH & VA+<Vreg Field short circuit to the ground DF Overvoltage DF<VS1 & VA+>Vreg The diagnostic result is disabled during the Soft-start delay time t_ST and the soft attack timing t_SL. Figure 6. Load response control )FIELD REQUEST %NGINE START T?34 T?3, T?3, "L "L )FIELD DELIVERED *$3*36 DocID029462 Rev 1 11/14 13 Electrical specifications L9408F Table 7. Application summary features (standard option) Regulation Thermal drift Pre-exc. Soft start Soft attak DF monitor Voltage (V) (mV/C) FS_DF (%) Delay Timing (s) Timing (s) function 14.45 -3 12.5 0 2.88 YES Figure 7. DFMonitor electrical configuration 6ALIM 2 #ONTROL &IELD $&-ON DRIVER # TO THE %#5 4EST CIRCUIT &IELD DRIVER *$3*36 12/14 DocID029462 Rev 1 L9408F 3 Revision history Revision history Table 8. Document revision history Date Revision 16-Jun-2016 1 Changes Initial release. DocID029462 Rev 1 13/14 13 L9408F IMPORTANT NOTICE - PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST's terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers' products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. (c) 2016 STMicroelectronics - All rights reserved 14/14 DocID029462 Rev 1