L6910TR STMicroelectronics, L6910TR Datasheet

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... HICCUP mode. VCC OCSET MONITOR PROTECTION & REF SS OSC PWM E COMP D03IN1509 L6910A HTSSOP16 (Exposed Pad) Package L6910 SO-16 L6910TR SO-16 in Tape & Reel L6910A HTSSOP16 L6910ATR HTSSOP16 in Tape & Reel 12V in BOOT UGATE V BOOT O LGATE PGND GND VFB L6910 output Rev. 9 ...

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L6910 - L6910A Table 2. Absolute Maximum Ratings Symbol Vcc Vcc to GND, PGND V - Boot Voltage BOOT V PHASE V - HGATE V PHASE OCSET, LGATE, PHASE SS, FB, PGOOD, VREF, EAREF, RT COMP T Junction Temperature Range ...

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Table 4. Pins Function SO HTSSOP Name 1 1 VREF Internal 0.9V ±1.5% reference is available for external regulators or for the internal error amplifier (connecting this pin to EAREF) if external reference is not available. A minimum 1nF capacitor ...

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L6910 - L6910A Table 5. Electrical Characteristics (V Symbol Parameter V SUPPLY CURRENT cc Icc Vcc Supply current POWER-ON Turn-On Vcc threshold Turn-Off Vcc threshold Rising V threshold OCSET Turn On EAREF threshold SOFT START AND INHIBIT Iss Soft start ...

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DEVICE DESCRIPTION The device is an integrated circuit realized in BCD technology. The controller provides complete con- trol logic and protection for a high performance step-down DC-DC converter designed to drive N Channel Mosfets in a synchronous-rectified ...

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L6910 - L6910A 4.2 Reference A precise ±1.5% 0.9V reference is available. This reference must be filtered with 1nF ceramic capacitor to avoid instability in the internal linear regulator able to deliver up to 100 A and may ...

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PHASE pin is over about 500mV. The lower mos is in any case turned-on after 200ns from the high side turn-off. The peak current is shown for both the upper (fig. 6) and the lower (fig. 7) ...

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L6910 - L6910A Overcurrent protection is performed by the device comparing the drop across the high side MOS, due to the R , with the voltage across the external resistor (R DSON upper MOS. Thus the overcurrent threshold (I Where ...

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The response time to a load transient is different for the application or the removal of the load: if during the ap- plication of the load the inductor is charged by a voltage equal to the difference between the input ...

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L6910 - L6910A Figure 10. Compensation Network The compensation network consists in the internal error amplifier and the impedance networks Z C20) and Z (R5, C18 and C19). The compensation network has to provide a closed loop transfer function with ...

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Figure 11. Asymptotic Bode Plot of Converter's Gain 5 15A DEMO BOARD DESCRIPTION The demo board shows the operation of the device in a general purpose application. This evaluation board al- lows voltage adjustability from 0. through the ...

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L6910 - L6910A Table 6. Part List Reference R1 R2 10K R3 4.7K R4 1KOhm 5% 125mW R5 2.7K R6 10Ohm 5% 125mW R7 510Ohm 5% 125mW R8 R9 R10 14K R11 6.98K R12 2.61K R13 1.74K C1, C3 C9, ...

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Figure 13. PCB and Components Layouts Component Side Figure 14. PCB and Components Layouts Internal Power GND Layer Figure 15. Efficiency vs Output Current 100 100 Vin=Vcc=5V Vin=Vcc= Fsw=200KHz Fsw=200KHz 75 75 ...

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L6910 - L6910A Figure 16. Efficiency vs Output Current 100 COMPONENTS SELECTION 6.1 Inductor Selection To select the right inductor value, the application conditions must be fixed. For ...

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APPLICATION SUGGESTIONS FOR HIGHER CURRENTS For higher output currents 20A, the following configuration can be used (with reference to the demo board schematic): Q1,Q2,Q3: STS11NF30L Q4,Q5,Q6: STS17NF3LL L: 2.5 H Magnetic 77121A7 Core 7T 2x AWG16 In ...

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L6910 - L6910A Table 9. Part List Reference Description Resistor R1 2K7 Ohm 0805 5% 125mW 1K8 Ohm 0805 5% 125mW 1K Ohm 0805 5% 125mW R2 10K 5% 125mW R3 4K7 5% 125mW R4 4K7 5% 125mW R5 2K7 ...

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Figure 18. PCB and Components Layouts Component Side 7.1 Compact Demo Board Performances Figures 19, 20 show the measured efficiency versus load current for different values of output voltage. The mea- sure has been done at 5V and 12V input. ...

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L6910 - L6910A 8 15A HTSSOP16 DEMO BOARD DESCRIPTION A specific Demo Board has been realized for the HTSSOP16 package. The features are the same of the 15A Demo Board previously described but thermal performance are improved. The PGOOD signal ...

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Table 11. Part List (continued) Reference C12,C13, C15,C21,C16 C14 C17 C18 C19 C20 C22 C23 L1 L2 3uH T50-52B Core, 7T AWG15 Q2,Q3,Q4, SWITCH Table 12. Other inductor manufacturer Manufacturer WÜRTH ELEKTRONIK PANASONIC SUMIDA Figure 22. ...

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L6910 - L6910A 9 APPLICATION IDEA 1: DDR MEMORY AND TERMINATION SUPPLY Double Data Rate (DDR) Memories require a particular Power Management Architecture. This is due to the fact that the trace between the driving chipset and the memory input ...

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Figure 24. Efficiency vs Output Current Source Mode Vcc=12V Vcc=12V Vout=1.25V Vout=1.25V Fsw=200KHz Fsw=200KHz ...

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L6910 - L6910A 10 APPLICATION IDEA 2: POSITIVE BUCK-BOOST REGULATOR 3V TO 13.2V INPUT / 5V 2.5A OUTPUT In some applications the input voltage changes in a very wide range while the output must be regulated to a fixed value. ...

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Table 13. Part List Reference R1 910 Ohm 5% 125mW R2 R3 4.7K 5% 125mW R4 R5 2.7K 5% 125mW Ohm 125mW C1,C2 C13,C14 C12,C5, C10 C11 G1 L1 2.5 H (77121A7 ...

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L6910 - L6910A 11 APPLICATION IDEA 3: BUCK-BOOST REGULATOR 3V TO 5.5V INPUT/-5V 3A OUTPUT In applications where a negative output voltage is required, a standard Buck-Boost topology can be implement- ed. The considerations related to the maximum output current ...

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Table 14. Part List (continued) C9 C10 Reference C11 G1 L1 2.5 H (77121A7 Core, Double winding 7 AWG16) Q1, STPS3L25U ( STPS340U) U1 Figure 33. Efficiency vs. Output Current ...

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L6910 - L6910A Figure 34. HTSSOP16 (Exposed pad) Mechanical Data & Package Dimensions mm DIM. MIN. TYP. MAX. A 1.2 A1 0.15 A2 0.8 1.0 1.05 b 0.19 0.3 c 0.09 0.2 D (*) 4.9 5.0 5.1 D1 1.7 E ...

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Figure 35. SO-16 (Narrow) Mechanical Data & Package Dimensions mm DIM. MIN. TYP. MAX. A 1.75 a1 0.1 0.25 a2 1.6 b 0.35 0.46 b1 0.19 0. (1) 9 5.8 6.2 e 1.27 ...

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L6910 - L6910A Table 1. Revision History Date Revision January 2004 August 2004 May 2005 28/29 7 Migration from ST-Press to EDOCS dms. 8 Changed any figures and textes; add. the section “15A HTSSOP16 Demo Board Description”. Changed the style-look ...

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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 ...