L9466

L9466 Car alternator voltage regulator Features ■ ■ ■ ■ ■ ■ For air and liquid cooled applications DF output (inverted field monitor) Thermal protection FIeld driver, lamp driver, relay driver, and DF (field monitor) short circuit protected Load response control Single phase autostart Multiwatt8 Description The L9466 is a monolithic multifunction generator Voltage regulator intended for use in automotive charging applications. Table 1. Device summary Order code L9466N Package Multiwatt8 Packing Tube This All Silicon Voltage Regulator regulates the output of an automotive generator by controlling the field winding current by means of a variable frequency PWM high side driver. October 2008 Rev 2 1/11 www.st.com 11 Contents L9466 Contents 1 2 3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 3.2 3.3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2/11 L9466 Block diagram 1 Block diagram Figure 1. Block diagram Key SW. Fault Lamp VGO L Relay R P Starter Battery F+ Stator ASVR DF To ECM C Field (Rotor) Rectifier Bridge Loads 3/11 Pin description L9466 2 Pin description Table 2. N° 1 2 3 4 5 6 7 8 Pin description Pin VGO F+ G NC Gnd DF L P Description Generator Output – Voltage Sense and Power Supply to ASVR Field Driver - High Side Drive Output Ground for ASVR (Must be connected for Ground for ASVR) Not connected Internally connected to the Tab or Slug in MW-8. Inverted Field Monitor Output Lamp - Low Side Driver; Relay - High Side Driver Phase Sense Input Figure 2. Pin connection (top view) 8 7 6 5 4 3 2 1 Tab connected to pin 5 D02AT502B P L DF GND NC G F+ VGO 4/11 L9466 Electrical specifications 3 3.1 Electrical specifications Absolute maximum ratings Table 3. Symbol IOC Ptot Absolute maximum ratings Parameter Output current capability Power dissipation Short circuit protected Value Internally limited 6 All terminal, to VGO and ground W Unit 3.2 Thermal data Table 4. Symbol Thermal data Parameter Value Unit Tj Tstg Tsd Rth j-case Junction temperature Storage temperature Thermal shut-down Thermal resistance junction to case -40 to +150 -50 to +150 175 ± 15 1.5 °C °C °C °C/W 3.3 Table 5. Symbol VOS VOS Electrical characteristics Electrical characteristics (Tcase = -35°C to +150°C continuous unless otherwise specified) Parameter Operating supply voltage Operating supply voltage Test condition Tcase = +25°C to =150°C Tcase = -40°C to +25°C VGO = 12.6V; Tcase = 25°C; 10kΩ; F+, G & Tab (Slug) Grounded; L, DF, & P unconnected; Regulator not activated. Min. 8 10 Typ. Max. Vov Vov Unit V V ISB Stand-by current 300 μA VSP VNB TC VLR VSR VF-ON Regulator set-point Generator output, no battery Thermal compensation Load regulation Speed regulation Output saturation voltage No battery, IOUT = 2A to 50% Max. Load Voltage @ VGO 6500 grpm, 10% to 95% load 15A load, 2000 to 20,000 grpm IF = 6A, VGO = 14.0V, Tcase = 25°C Curve shown in Figure 3 VSP - 2 VSP + 2 V Curve shown in Figure 3 300 100 750 mV mV mV 5/11 Electrical specifications Table 5. Symbol VF-ON IF-LIM IF-LIM IG-MIN VD-F ID-R FOSC VDF IDF-LK L9466 Electrical characteristics (continued) (Tcase = -35°C to +150°C continuous unless otherwise specified) Parameter Output saturation voltage Field limit current(1) Field limit current(1) Min. generator current load Field discharge diode Diode reverse current Oscillation frequency DF saturation voltage DF output leakage current Test condition IF = 5A, VGO = 13.5V, Tcase = 125°C Current F+ Terminal to Gnd. @ Tcase ≤ 25°C Current F+ Terminal to Gnd. @ Tcase = +150°C Current measured @ generator output IF = 6A, Tcase = 25°C VR = 20V During LRC operation IDF ≤ 10mA VDF < 25V VDF = 32 - 35V; at 2.2kΩ VDF = 32 - 35V; at 2.2kΩ 4X ÷ 16 340 400 9.0 6.0 0.5 1.85 1 460 0.8 10 Min. Typ. Max. 850 Unit mV A A A V mA Hz V μA Hz FTURBO Internal clock frequency FTURBO IRD, SS, LRC Rate 1. The Field Drive capability shall not decrease as a function of temperature between 25°C and 150°C, at a rate faster than 0.024A/°C (for example, Field Drive shall be capable of ≥7.2A at 100°C). Figure 3. Set-point voltage vs. mounting tab temperature 6/11 L9466 Table 6. Symbol VOV VUV VL-SAT Electrical specifications Diagnostic (Tcase = -35°C to +150°C unless otherwise specified) Parameter Over-voltage Under-voltage Lamp ON saturation voltage FP > FP-LRC IL = 0.5A (sinked by ASVR) IL < 0.5A, VGO = Open; Tcase = -35°C to 85°C IL = 750mA (Sourced by ASVR) (2) Tcase < 125°C Delay before Lamp ON 0.9 1.1 Conditions Min. VSP + 1 0.95 >VL-ACT 1.33 3.8 Typ. VSP + 1.3 Max. VSP + 2 1.8 1.45 5 1.85 1.3 Units V V V V V s VL-SAT-BO Lamp ON voltage (1) VL-RLY TDELAY Lamp OFF (relay drive) saturation voltage (vs. B+) Fault indication delay time 1. This condition can happen when the connection between the battery and VGO or the output terminal of the generator is broken. The 1.1 second delay is not required, and current is sinked by ASVR. 2. When no fault is detected the Lamp terminal is pulled up by ASVR. Table 7. Fault indication table Conditions TDelay No Yes Yes Yes No No Initial KEY-ON Bulb and Wiring Check (Lamp ON for 1 sec. ± 15% after initial KEY-ON) VGO > VOV VP < VP-F AND VGO < VSP FP < FP-TR @ VP-TR No Connection Between Battery and VGO At Start: Lamp ON until FP>FP-IR AND VP>VP-F. i.e. until VP reaches 8V. Table 8. Symbol VL-PD IL-PD VP-IR IP FP-IR FP-TR IRD Regulation features Parameter L terminal regulator activate threshold L terminal pull down current Initiate regulation phase voltage threshold Phase terminal current sink Initiate regulation phase frequency Terminate regulation phase frequency Initiate regulation delay Regulator activated, VP-IR and FP-IR Conditions Met First Time. Conditions VGO=12.6V VL = VL-ACT VGO=12.6V Regulator Activated VP > 1.5V and < 12.6V VGO = 12.6V Min. 0.8 0.09 1.1 0.25 123 59 1.7 145 72 2 1.3 Typ. 1 Max. 1.15 0.78 1.5 3.5 167 86 2.3 Unit V mA V mA Hz Hz s 7/11 Electrical specifications Table 8. Symbol FSDC LRC FP-LRC SS L9466 Regulation features (continued) Parameter Field strobe duty cycle Load response control rate LRC transition frequency Soft-start Conditions Regulator activated AND (regulation terminated OR regulation NOT initiated) Field drive duty cycle increase LRC enabled if FP < FP-LRC LRC enabled until VSP reached regardless other conditions Min. 16 8.5 255 34 Typ. 18.75 10 300 40 Max. 22 11.5 345 46 Unit % %/s Hz %/s 8/11 L9466 Package information 4 Package information In order to meet environmental requirements, ST (also) offers these devices in ECOPACK® packages. ECOPACK® packages are lead-free. 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 4. Multiwatt8 mechanical data and 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 9/11 Revision history L9466 5 Revision history Table 9. Date 17-May-1994 21-Oct-2008 Document revision history Revision 1 2 Initial release. Revalidation document. Document reformatted. Updated Section 2: Pin description on page 4. Changes 10/11 L9466 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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