L6610 STMicroelectronics, L6610 Datasheet
L6610
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L6610 Summary of contents
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... APPLICATIONS SWITCHING POWER SUPPLIES FOR DESKTOP PC'S, SERVERS AND WEB SERVERS SUPERVISOR FOR DISTRIBUTED POWER MAIN CONTROL AUXILIARY CONTROL L6610 BCD TECHNOLOGY SDIP24 SO24 ORDERING NUMBERS: L6610N L6610D L6610DTR(T & Reel) +12V +5V COM -5V -12V +3.3V +5Vaux Bout Dmon VDD 12V Cout 5V -5V MFault ...
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Logic and Programmable Trimming ...
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... DESCRIPTION The L6610 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) generated by a main converter and of a supply line generated by an auxiliary converter. The typical application circuit is showed on the front page ...
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... L6610 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 input. The non-inverting input is connected to an internal 2.5V reference that can be digitally trimmed ...
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... PW-OK pin (#14) will be kept low for additional 250ms (typ.) to make sure all the outputs are settled. Power-off delay. As soon as PS-ON (#15) pin is recognized high, indicating an imminent turn-off OFF delay condition, PW-OK (#14) pin will go low immediately . The converter will be turned off after a delay of 2.5ms. Description Description L6610 5/29 ...
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... L6610 FUNCTION DESCRIPTION (continued) Name The PS-ON signal input has debounce logic to prevent improper activation. All of the monitored Debounce inputs have digital filtering/debounce logic on board for high noise immunity. AC sense hysteresis. Programmable hysteresis is provided on the ACsns input (#13) to avoid AC-hysteresis undesired shutdown caused by noise as the voltage at the pin is near the threshold or by the voltage ripple across the bulk capacitor ...
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... Bias current Vout = -12V UV -12V undervoltage OV -12V overvoltage V -12V disable voltage 3.3V 5V 3V3 5V Test Condition No Fault 5V/3V3isns V = 10V to 14V +12V V = 12V 12Visns Voltage to disable comparator L6610 = -12V -5V, -12V 5V Min. Typ. Max. Unit 4.2 4.3 4.6 V 3.7 3.8 4.1 V 0.25 0.5 0.75 V 6.1 6.3 6 2.80 2.90 3 ...
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... L6610 ELECTRICAL CHARACTERISTCS (continued) (unless otherwise specified 105° PS-ON = low) Dmon DD Symbol Parameter -12V bias current Vout = -5V UV -5V undervoltage OV -5V overvoltage V -5V disable Voltage D -5V bias current Vout = 3.3V Aux/Dual (Dmon option) UV 3V3 undervoltage OV 3V3 overvoltage Vout = 5V Aux/Dual (Dmon option) ...
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... PS- PS-ON PS-ON input minimum pulse width for a valid logic change. VFB quasi-monothonic ramp from 0 to 2.5V Ramp 47nF REF REF REF T = 25° About nominal L6610 = -12V -5V, -12V 5V Min. Typ. Max. Unit -25 -50 -95 mA 2.1 2.4 2.7 V 0.3 0.5 0 ...
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... L6610 ELECTRICAL CHARACTERISTCS (continued) (unless otherwise specified 105° PS-ON = low) Dmon DD Symbol Parameter Z Divider impedance FB Temperature coefficient W Divider 5/12 weighting 5 A Voltage gain VOL GBW Unity gain bandwidth PSRR Power supply rejection ratio I Output sink current OUTL I Output source current ...
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... PROM Fusing Time FUSE = 5V 3.3V 5V 3V3 5V Test Condition 4.5V<V < 1.4V 1.1V FB OUT V = 1.1V OUT V = 1.1V SOURCE V = 1.4V SINK Dmon = 2.7V SINK L6610 = -12V -5V, -12V 5V Min. Typ. Max. Unit -1.0 -1.5 -2 4.5 V 0.7 1.1 V 0.25 V 1.5 V 3.5 V 100 K 0.8 ...
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... L6610 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 I [mA Dmon = ° [V] DD Figure 3. IC Supply current I [mA ...
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... Figure 12. ACsense reference [V] 2.7 2.6 2.5 2.4 2.3 100 125 150 [mA] B -12V -12V -5V -50 - 100 125 150 [V] -5V undervoltage -5V overvoltage -12V undervoltage -12V overvoltage -50 - 100 125 150 -50 - 100 125 150 L6610 13/29 ...
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... L6610 TYPICAL ELECTRICAL CHARACTERISTICS (continued) Figure 13. External voltage reference. [V] 2.7 2.6 2.5 2.4 2.3 -50 - 100 125 150 Figure 15. 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 14/29 Figure 14. Error amplifier A, B and C reference 3 2 ...
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... 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 Normal operation timing diagram ............................................................................................................... 20 4 Undervoltage, overvoltage, overcurrent and relevant timings .................................................................... sense (mains undervoltage warning) ................................................................................................... 21 6 Application example ................................................................................................................................... 23 7 Application ideas ........................................................................................................................................ 25 APPLICATION INFORMATION INDEX L6610 15/29 ...
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... L6610 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 to internal logic as DATA and CLOCK inputs respectively, allowing chip programming even when the device is assembled on the application board. Onboard chip programming allows: – ...
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... Enabled Enabled Disabled Disabled MSB ACsns ACsns threshold Hysteresys 2.5V typ typ. 0010 0101 [mV +112 +96 +80 +64 +48 +7.5 +32 +5.0 +16 +2.5 0 -16 -2.5 -32 -5.0 -48 -7.5 -64 -80 -96 -112 -128 5V/ 3.3V Dmon 5V/3.3V OCP Selection Selection 0110 3.3V 3.3V LSB L6610 0 -10 17/29 ...
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... H1 H2 (for example 2.4K) with +12V output +5V output 5V 12V 168K 600K _ Aout + 80.6K 8ms SS L6610 +2.5V GND Zc , only the +5V output is kept under feed- H2 optional, to change feedback weight Ainv R L and R ); the output pin (Bout, ...
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... R R Bout Bout L6610 L6610 R B Zc(aux) DMON _ + Cout OCP bounce GND which, in turn, implies a larger volt +3.3V +3. Binv Binv +1.25V +1.25V V AUX Cinv +1.25V L6610 L6610 causes the 19/29 ...
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... L6610 3 NORMAL OPERATION TIMING DIAGRAM (FIG. 20) 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. No such blanking is applied to OV faults. – t2: PW-OK delay. This period starts when all monitored outputs and AC sense are above their respec- tive UV levels and finishes at PW-OK going high. – ...
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... UVB 64ms In Out Clock Reset D_UVB Reset Delay 1s Reset In Out Delay 2.5ms Clock Reset In Clock S Q Latch Latch R OCP_BOUNCE S Q Latch Reset Latch Reset R Out Vdd Reset Reset Vdd Delay 250ms In Out Clock Reset L6610 Mfault Vdd Dfault Cout PW-OK 21/29 ...
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... L6610 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 (an internal OCP_BOUNCE signal is generated, see fig. 21) and PW_OK falls down. This function is enabled 64ms after the UVLO signal falls down ...
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... The Auxiliary section supplies a stand-by voltage (5V typ.) through a flyback converter. The Main section, in forward configuration, presents 5 standard outputs (3.3V, ±5V, ±12V). At the secondary side, the housekeeping circuitry governed by the L6610 checks the outputs and sends control signals to the primary side through three optocouplers. It also generates power good information to the system while managing all timings during power-up and power-down sequences. In fig detailed circuit for the sec- ondary side is presented ...
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... A crowbar on the auxiliary output is switched on through DFAULT in case of overvoltage. The L6610 is supplied by the Auxiliary output; the signals sent to the primary side are: – a "digital" ON/OFF signal through an optocoupler that drives the relevant pin of primary Main controller to switch the Main converter ON and OFF; ...
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... SENSE FAULT 12V Bin 5V Bout 3V3 Aout PROG Ain GND 12Visns GND 5V/3V3isns -5 Cout -12 Cin VREF to SGND DMON PS-ON DFAULT PW-OK Vdd ACsns L6610 +5Vaux L6610 +12V +5V PGND -5V -12V +3.3V to SGND 1 GND VCC 8 to SGND 2 7 CS- CGA 3 CS SHARE 5 ADJ 4 COMP BUS L6615 ...
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... OCP_bounce internal signal that guarantees the reduction of duty cycle. Figure 26. Controlling a Linear Regulator with the Error Amplifier B Figure 27. Auxiliary OVP without Crowbar 26/29 + +12V Bout R B L6610 100 DMON D1 5K6 BAT42 Cout L6610 Q1 BC548 C DEL defines the turn-on delay. A diode con- DEL +3. Binv + ...
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... H 10.0 10.65 0.394 h 0.25 0.75 0.010 k 0˚ (min.), 8˚ (max.) L 0.40 1.27 0.016 B 0.10mm .004 Seating Plane inch MECHANICAL DATA TYP. MAX. 0.104 0.012 0.100 0.0200 0.013 0.614 0.299 0,050 0.419 0.030 0.050 L6610 OUTLINE AND SO24 h x 45˚ SO24 27/29 ...
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... L6610 mm DIM. MIN. TYP. MAX. A 5.08 A1 0.51 0.020 A2 3.05 3.30 4.57 0.120 B 0.36 0.46 0.56 0.0142 0.0181 0.0220 B1 0.76 1.02 1.14 0.030 c 0.23 0.25 0.38 0.009 D 22.61 22.86 23.11 0.890 E 7.62 8.64 E1 6.10 6.40 6.86 0.240 e 1.778 e1 7.62 e2 10.92 e3 1.52 L 2.54 3.30 3. 28/29 inch MIN. TYP. MAX. 0.20 0.130 0.180 0.040 0.045 0.0098 0.0150 0.90 0.910 0.30 0.340 0.252 0.270 0.070 0.30 0.430 0.060 0.10 0.130 0.150 ...
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