FAN53168MTC FAIRCHILD [Fairchild Semiconductor], FAN53168MTC Datasheet
FAN53168MTC
Related parts for FAN53168MTC
FAN53168MTC Summary of contents
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FAN53168 6-Bit VID Controlled 2-4 Phase DC-DC Controller Features • Precision Multi-Phase DC-DC Core Voltage Regulation – ±10mV Output Voltage Accuracy Over Temperature • Differential Remote Voltage Sensing • Selectable Phase Operation • 1MHz ...
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FAN53168 Absolute Maximum Ratings Absolute maximum ratings are the values beyond which the device may be damaged or have its useful life impaired. Functional operation under these conditions is not implied. Parameter Supply Voltage: VCC to GND Voltage on FBRTN ...
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PRODUCT SPECIFICATION Pin Configuration Pin Definitions Pin Number Pin Name Pin Function Description 1–6 VID[4:0], VID Inputs. Determines the output voltage via the internal DAC. These inputs are VID5 compliant to VRM10/VRD10 specifications for static and dynamic operation. All have ...
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FAN53168 Electrical Specifications = 0 ° +85 ° C and FBRTN = GND, unless otherwise noted.) (Vcc = 12V The • denotes specifications which apply over the full operating temperature range. Parameter Symbol Error Amplifier Output ...
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PRODUCT SPECIFICATION Electrical Specifications (Vcc = 12V 0°C to +85°C and FBRTN = GND, unless otherwise noted.) A The • denotes specifications which apply over the full operating temperature range. Parameter Symbol Current Sense Amplifier Offset Voltage V ...
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FAN53168 Electrical Specifications (Vcc = 12V 0°C to +85°C and FBRTN = GND, unless otherwise noted.) A The • denotes specifications which apply over the full operating temperature range. Parameter Symbol Power Good Comparator Undervoltage Threshold V PWRGD(UV) ...
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PRODUCT SPECIFICATION Internal Block Diagram VCC 28 UVLO SHUTDOWN EN 11 & BIAS 19 GND DAC +150mV CSREF CMP DAC -250mV CMP PWRGD 10 Delay 15 ILIMIT EN 12 DELAY COMP 9 REF 7 FBRTN REV. 1.0.0 6/9/03 RAMPADJ RT ...
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FAN53168 Typical Characteristics 100 150 200 RT VALUE – kΩ SEE EQUATION 1 FOR FREQUENCIES NOT ON THIS GRAPH TPC 1. Master Clock Frequency Test Circuits VCC 28 +12V CSCOMP 18 39k Ω ...
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PRODUCT SPECIFICATION Application Circuit REV. 1.0.0 6/9/03 U4 FAN53168 FAN53168 9 ...
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FAN53168 Bill of Materials Table 1. FAN53168 VRM/VRD10 Application Bill of Materials for Figure 1 Reference Qty U4 1 VRM10, Multi-Phase Controller U1-3 3 Sync MOSFET Driver, 12V/12V Q1-3 3 N-MOSFET, 30V, 50A, 8mΩ Q4-9 6 N-MOSFET, 30V, 75A, 5mΩ ...
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PRODUCT SPECIFICATION Table 2. VID Codes VID4 VID3 ...
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FAN53168 Table 2. VID Codes (continued) VID4 VID3 ...
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PRODUCT SPECIFICATION General Description and Applications Information Theory of Operation The FAN53168 combines a multi-mode, fixed frequency PWM control with multi-phase logic outputs for use and 4 phase synchronous buck CPU core supply power con- verters. The ...
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FAN53168 To provide the best accuracy for the sensing of current, the CSA has been designed to have a low offset input voltage. Also, the sensing gain is determined by external resistors so that it can be made extremely accurate. ...
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PRODUCT SPECIFICATION Figure 2. Start-Up Waveforms, Circuit of Figure 1 Channel 1 – PWRGD Channel 2 – V OUT Channel 3 – HS MOSFET V GS Channel 4 – LS MOSFET V GS After the limit is reached, the 3V ...
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FAN53168 Figure 4. VID On-the-Fly Waveforms, Circuit of Figure 1, VID Change = 5mV, 5µs, 50 steps, I Change = 5A to 65A OUT Power Good Monitoring The Power Good comparator monitors the output voltage via the CSREF pin. The ...
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PRODUCT SPECIFICATION Ω × 1.96 t DELAY R = ----------------------------------- - DLY C DLY Ω Ω Ω Inductor Selection The choice of inductance for the inductor determines the ripple current in the inductor. Less inductance leads to more ripple current, ...
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FAN53168 • Sumida Electric Company (510) 668-0660 www.sumida.com • Vishay Intertechnology (402) 563-6866 www.vishay.com Output Droop Resistance The design requires that the regulator output voltage measured at the CPU pins drops when the output current increases. The specified voltage drop ...
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PRODUCT SPECIFICATION 5. Calculate then select the closest value thermistor available. Also compute a scaling factor k based on the ratio of the actual thermistor value used relative to the ...
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FAN53168 capacitors must be increased. One should note for this multi- mode control technique, “all-ceramic” designs can be used as long as the conditions of Equations 11, 12 and 13 are satisfied. Power MOSFETs For this example, the N-channel power ...
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PRODUCT SPECIFICATION Also shown is the standby dissipation factor ( for the driver. For the FAN53418, the maximum dissi- CC pation should be less than 400 mW. For our example, with mA 24nC ...
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FAN53168 With the multimode feedback structure of the FAN53168, one needs to set the feedback compensation to make the converter’s output impedance working in parallel with the output decoupling meet this goal. There are several poles and zeros created by ...
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PRODUCT SPECIFICATION 1 × × ------------- 1 – × CRMS × × I 0.125 65A ----------------------- - 1 = – × CRMS 3 0.125 µ To reduce the input-current di/dt to below ...
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FAN53168 Figure 8. AC Loadline Waveform 16. If the V and V are different by more than a ACDRP DCDRP couple of millivolts, use Equation 38 to adjust C may need to parallel different values to get the right one ...
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PRODUCT SPECIFICATION Since the FAN53168 turns off all of the phases (switches inductors to ground), there is no ripple voltage present dur- ing load release. Thus, you do not have to add headroom for ripple, allowing your load release V ...
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FAN53168 Signal Circuitry • The output voltage is sensed and regulated between the FB pin and the FBRTN pin (which connects to the signal ground at the load). In order to avoid differential mode noise pickup in the sensed signal, ...
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PRODUCT SPECIFICATION Mechanical Dimensions 9.7 ± 0.1 0.51 TYP 28 1 PIN # 1 IDENT 1.2 MAX 0.1 C ALL LEAD TIPS – C – 0.65 0.19–0.30 DIMENSIONS ARE IN MILLIMETERS NOTES: A. Conforms to JEDEC registration MO-153, variation AB, ...
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... FAN53168 Ordering Information Part Number FAN53168MTC DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...