FAN5018BMTCX Fairchild Semiconductor, FAN5018BMTCX Datasheet
FAN5018BMTCX
Specifications of FAN5018BMTCX
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FAN5018BMTCX Summary of contents
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FAN5018B 6-Bit VID Controller 2-4 Phase VR10.X Controller Features • Improved Noise Immunity • Improved Load Line Accuracy • TTL Compatible VID Inputs • Fully Pin and Function compatible with existing FAN5018 and ADP3180 Controllers • Precision Multi-Phase DC-DC Core ...
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FAN5018B Pin Assignments VID5/SEL RAMPADJ Pin Definitions Pin Number Pin Name Pin Function Description 1–5 VID [4:0] VID inputs. Determines the output voltage via the internal DAC. These inputs comply to VRM10/VRD10 specifications for static and dynamic operation. All have ...
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PRODUCT SPECIFICATION Pin Definitions (continued) Pin Number Pin Name Pin Function Description 16 CSREF Current Sense Reference. Non-Inverting input of the current sense amp. Sense point for the output voltage used for OVP and PWRGD. 17 CSSUM Current Sense Summing ...
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FAN5018B Absolute Maximum Ratings Absolute maximum ratings are the values beyond which the device may be damaged or have its useful life impaired. Func- tional operation under these conditions is not implied. Parameter Supply Voltage: VCC to GND Voltage on ...
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PRODUCT SPECIFICATION Electrical Specifications (V = 12V 0°C to +85°C and FBRTN=GND, using circuit in Figure 1, unless otherwise noted The • denotes specifications which apply over the full operating temperature range. Parameter Symbol Error Amplifier ...
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FAN5018B Electrical Specifications (continued 12V 0°C to +85°C and FBRTN=GND, using circuit in Figure 1, unless otherwise noted The • denotes specifications which apply over the full operating temperature range. Parameter Symbol DC Gain ...
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PRODUCT SPECIFICATION Electrical Specifications (continued 12V 0°C to +85°C and FBRTN=GND, using circuit in Figure 1, unless otherwise noted The • denotes specifications which apply over the full operating temperature range. Parameter Symbol Power ...
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FAN5018B Internal Block Diagram VCC 28 UVLO Shutdown 11 EN & Bias 19 GND DAC +150mV CSREF CMP DAC -250mV CMP PWRGD 10 Delay ILIMIT DELAY COMP 9 REF 7 FBRTN 8 RT RAMPADJ ...
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PRODUCT SPECIFICATION Typical Characteristics 4 3.5 3 2.5 2 1 100 200 RESISTOR’S RT VALUE (kΩ) TPC 1. Master Clock Frequency Test Circuits VCC 28 +12V CSCOMP 18 39kΩ CSA 100nF CSSUM 17 1kΩ 16 CSREF ...
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FAN5018B Application Circuit 10 U4 FAN5018B PRODUCT SPECIFICATION REV. 1.0.0 Jul/15/05 ...
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PRODUCT SPECIFICATION Bill of Materials Table 1. FAN5018B VRM/VRD10 Application Bill of Materials for Figure 1 Ref Qty U4 1 VR10, Multi-Phase Controller U1–3 3 Sync MOSFET Driver, 12V/12V Q1–3 3 N-MOSFET, 30V, 50A, 8m Q4–9 6 N-MOSFET, 30V, 75A, ...
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FAN5018B Table 2. VRM10 VID Codes VID4 VID3 ...
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PRODUCT SPECIFICATION Table 2. VRM10 VID Codes (continued) VID4 VID3 ...
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FAN5018B Table 3. VRM9 VID Codes VID4 VID3 ...
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PRODUCT SPECIFICATION General Description Note: The information in this section is intended to assist users in their design and understanding of the FAN5018B functionality. For clarity and ease of understanding, device parameters have been included in the text. In the ...
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FAN5018B amplifier, and a filter capacitor is placed in parallel with this resistor. The amplifier’s gain is programmable by adjusting the feedback resistor to set the load line required by the microprocessor. The current information is then given as the ...
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PRODUCT SPECIFICATION Figure 2. Start-Up Waveforms Circuit of Figure 5Circuit of Figure 5 Channel 1 – Vout, Channel 2 – VccChannel 1 – Vcc, Channel 2 – Vout Channel 3 – OD, Channel 4 – Delay pinChannel 3 – OD, ...
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FAN5018B Power Good Monitoring The Power Good comparator monitors the output voltage via the CSREF pin. The PWRGD pin is an open drain output whose high level (when connected to a pull-up resistor) indi- cates that the output voltage is ...
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PRODUCT SPECIFICATION ⎧ ⎫ − × ⎨ VID ⎬ 20μ A DLY × ⎩ ⎭ V DLY VID where t is the desired soft-start time. Assuming Ω 301k and a ...
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FAN5018B Selecting a Standard Inductor The companies listed below can provide design consultation and deliver power inductors optimized for high power applications upon request. Power Inductor Manufacturers • Coilcraft (847)639-6400 www.coilcraft.com • Coiltronics (561)752-5000 www.coiltronics.com • Sumida Electric Company (510) ...
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PRODUCT SPECIFICATION 4. Compute the relative values for R CS1 using: − × × − × − × × − × − ...
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FAN5018B ⎛ × ⎜ 650 nH 250 mV ≤ × ⎜ MAX ) × × Ω 2 × ⎝ × ...
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PRODUCT SPECIFICATION Typically, for main MOSFETs, one wants the highest speed (low C ) device, but these usually have higher ISS ON-resistance. Select a device that meets the total power dissipation (about 1.5 W for a single D-PAK) when combin- ...
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FAN5018B This limit can be adjusted by changing the ramp voltage V Do not set the per-phase limit lower than the average per- phase current (I ). LIM/n There is also a per phase initial duty cycle limit determined by: ...
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PRODUCT SPECIFICATION Choosing the closest standard values for these components Ω yields 390pF 16. 1.5nF, and 33pF. C Selection and Input Current di/dt Reduction IN In continuous inductor-current mode, ...
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FAN5018B = NEW ) OLD ( × OLD ) OLD 10. Measure the output ripple at no-load and ...
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PRODUCT SPECIFICATION Figure 10. Transient Setting Waveform Since the FAN5018B turns off all of the phases (switches inductors to ground), there is no ripple voltage present during load release. Thus, you do not have to add headroom for ripple, allowing ...
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FAN5018B • Whenever a power dissipating component (e.g., a power MOSFET) is soldered to a PCB, the liberal use of vias, both directly on the mounting pad and immediately surrounding it, is recommended. Two important reasons for this are: improved ...
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PRODUCT SPECIFICATION Mechanical Dimensions 28-Pin TSSOP 9.7 ± 0.1 0.51 TYP 28 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 ...
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... FAN5018B Ordering Information Part Number Temperature Range FAN5018BMTCX 0°C to +85°C 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; ...