L6611N STMicroelectronics, L6611N Datasheet
L6611N
Specifications of L6611N
Related parts for L6611N
L6611N Summary of contents
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... OPEN GROUND PROTECTION 8ms DIGITAL SOFT START 64 ms UV/OC BLANKING AT START-UP TYPICAL APPLICATION CIRCUIT + WIDE RANGE MAINS - April 2002 HOUSEKEEPING CONTROLLER L6611N APPLICATIONS SWITCHING POWER SUPPLIES FOR DESKTOP PC'S, SERVERS AND WEB SERVERS SUPERVISOR FOR DISTRIBUTED POWER MAIN CONTROL AUXILIARY CONTROL ...
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Logic and Programmable Trimming ...
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DESCRIPTION The L6611 is a control and housekeeping IC developed in BCD technology intended for acting at the sec- ondary side of desktop PC's or server's switching power supplies, in presence of standard voltage rails (+3.3V, +5V, ±12V) ...
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L6611 PIN DESCRIPTION (continued) Pin # Name Output of the error amplifier for the main converter. This pin typically drives an optocoupler and is 4 Aout also used for compensation along with Ainv (pin #5). Main loop error amplifier inverting ...
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PIN DESCRIPTION (continued) Pin # Name 18 3V3 3V3 UV/OV monitor. It uses a separate reference to the feedback reference. Input pin for 5V feedback, 5V current sense and 5V UV/OV monitor. 5V UV/OV uses a reference 5V 19 separate ...
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L6611 FUNCTION DESCRIPTION (continued) Name The IC provides an on-board 8ms soft-start, a quasi-monotonic ramp from 0V to 2.5V for the A error amplifier reference voltage, in order to avoid high current peaks in the primary circuit and Soft-start output ...
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ELECTRICAL CHARACTERISTCS (unless otherwise specified 105° PS-ON = low) Dmon DD Symbol Parameter SUPPLY SECTION V Start-up threshold DD(ON) V Minimum operating voltage after DD(OFF) turn-on V Hysteresis DD(H) V ...
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L6611 ELECTRICAL CHARACTERISTCS (continued) (unless otherwise specified 105° PS-ON = low) Dmon DD Symbol Parameter UV AC undervoltage Trim range Trim resolution I Hysteresis current ACH Hysteresis trim range H ...
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ELECTRICAL CHARACTERISTCS (continued) (unless otherwise specified 105° PS-ON = low) Dmon DD Symbol Parameter V PS-ON Input High Voltage IH V PS-ON Input Low Voltage IL PS-ON Input high clamp ...
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L6611 ELECTRICAL CHARACTERISTCS (continued) (unless otherwise specified 105° PS-ON = low) Dmon DD Symbol Parameter Trim resolution I Input bias current BIAS A Voltage gain VOL GBW Unity gain bandwidth ...
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ELECTRICAL CHARACTERISTCS (continued) (unless otherwise specified 105° PS-ON = low) Dmon DD Symbol Parameter F Clock Frequency CLOCK V Data Input Low DATALO V Data Input High DATAHI I PROM ...
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L6611 TYPICAL ELECTRICAL CHARACTERISTICS Figure 1. Supply start-up, UV and OV V [V] DD 6.5 over voltage 5.5 start-up 4.5 UV 3.5 -50 - Figure 2. IC Supply current vs. supply voltage ...
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TYPICAL ELECTRICAL CHARACTERISTICS (continued) Figure 7. 12V fault thresholds V [V] +12V 15 14 overvoltage 13 12 undervoltage 11 10 -50 - Figure 8. 3.3V/5V Dmon fault thresholds V [V] DMON 0 ...
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L6611 TYPICAL ELECTRICAL CHARACTERISTICS (continued) Figure 13. Error amplifiers ( Gain and Phase 200 200 150 150 100 100 -50 -50 -100 -100 -150 -150 -200 -200 1e+00 1e+00 1e+01 1e+01 14/28 phase phase ...
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On board digital trimming and mode selection..................................................................................Page 16 2 Error amplifiers and reference voltages ..................................................................................................... 18 Main section: error amplifier A and Soft -Start E/A and reference voltage 3.3V section: error amplifier B Auxiliary section: error amplifier C 3 ...
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L6611 APPLICATION INFORMATION 1 ONBOARD DIGITAL TRIMMING AND MODE SELECTION By forcing the PROG input pin high, the chip enters programming mode: the multifunction pins PW_OK and PS_ON are then disconnected from their normal functions (output pins) and are connected ...
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Table 2. Trim Coding E/A A threshold Parameter 2.5V typ. Address 0001 Tuning Bits [mV +112 + ...
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L6611 2 ERROR AMPLIFIERS AND REFERENCE VOLTAGES Three error amplifiers are implemented on the IC to achieve regulation of the output voltages: a brief description follows for each section. – Main section: error amplifier A and Soft-Start. The circuit is ...
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Between these pins it is connected the compensation network (Z improve response time. The feedback control circuit determines the magamp "off" time, converting the voltage at the output of error ...
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L6611 3 NORMAL OPERATION TIMING DIAGRAM (FIG. 18) The time intervals t1-t5 are listed below – t1: UV/OC blanking of MFAULT. While Main outputs are ramping up, the UV comparators are blanked for this interval to prevent a false turn-off. ...
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UNDERVOLTAGE, OVERVOLTAGE, DETECTION AND RELEVANT TIMINGS The IC provides on-board undervoltage and overvoltage protection for 3V3, ±5V, ±12V Main input pins and Dmon auxiliary input pin. Overcurrent protection is available for 12V and 5V or 3.3V, digitally selectable. The ...
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L6611 DFAULT; in the "Application ideas" section, another simple circuit is showed to guarantee the same pro- tection without the SCR. – Dmon input undervoltage: when an undervoltage on Dmon is detected, MFAULT is put high, Cout is pulled low ...
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The following relationships can be established for the ON (VB (ON) VB – --------------------------------- - R 1 which, solved for R1 and R2, yields ...
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L6611 Figure 22. Detailed Secondary Side 24/28 +12V +5V COM -12V +3.3V L6611 M-FAULT 12V Binv 5V Bout 3V3 Aout PROG Ainv GND Cout -12 Cinv VREF DMON PS-ON DFAULT PW-OK Vdd ACsns +5Vaux ...
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APPLICATION IDEAS In fig circuit is suggested to obtain the regulated +3.3V output with a linear configuration instead of the Magamp circuitry. In this case the output of the E/A modulates the gate-source voltage of a power ...
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L6611 mm DIM. MIN. TYP. MAX. a1 0.254 B 1.39 1.65 b 0.45 b1 0.25 D 25.4 E 8.5 e 2.54 e3 22.86 F 7.1 I 3.93 L 3.3 Z 1.34 26/28 inch MIN. TYP. MAX. 0.010 0.055 0.065 0.018 ...
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DIM. MIN. TYP. MAX. MIN. A 2.35 2.65 0.093 A1 0.1 0.3 0.004 B 0.33 0.51 0.013 C 0.23 0.32 0.009 D 12.6 13 0.496 E 7.4 7.6 0.291 e 1. 10.65 0.394 h 0.25 0.75 0.010 ...
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... 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 ...