FAN5091MTC Fairchild Semiconductor, FAN5091MTC Datasheet
FAN5091MTC
Specifications of FAN5091MTC
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FAN5091MTC Summary of contents
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... VID0 PWRGD VID1 VID3 Pentium is a registered trademark of Intel Corporation. Athlon is a registered trademark of AMD. Programmable Active Droop is a trademark of Fairchild Semiconductor. Description The FAN5091 is a synchronous multi-slice DC-DC controller IC which provides a highly accurate, programmable output voltage for all high-performance processors. Two interleaved synchronous buck regulator slices with built-in current shar- ing operate 180° ...
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FAN5091 Pin Assignments VID0 VID1 VID2 VID3 VID4 BYPASS AGND LDRVB PGNDB SWB HDRVB BOOTB Pin Definitions Pin Number Pin Name Pin Function Description 1-5 VID0-4 Voltage Identification Code Inputs. These open collector/TTL compatible inputs will program the output voltage ...
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PRODUCT SPECIFICATION Pin Number Pin Name Pin Function Description 20 ILIM Current Limit. A resistor from this pin to ground sets the over current trip level. 21 DROOP/E* Droop Control/Energy Star Mode Control. A resistor from this pin to ground ...
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FAN5091 Electrical Specifications (V = 12V,V = 1.500V, and T = +25°C using circuit in Figure 1, unless otherwise noted.) CC OUT A The denotes specifications which apply over the full operating temperature range. Parameter Output Voltage Output Current Initial ...
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PRODUCT SPECIFICATION Notes: 1. Steady State Voltage Regulation includes Initial Voltage Setpoint, Output Ripple and Output Temperature Drift and is measured at the converter’s VFB sense point measured at the converter’s VFB sense point. For motherboard applications, the ...
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FAN5091 Typical Operating Characteristics (V = 12V, and T = +25°C using circuit in Figure 2, unless otherwise noted TRANSIENT RESPONSE, 50A to 0.5A TIME (20 s/DIVISION) ...
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PRODUCT SPECIFICATION Typical Operating Characteristics OUTPUT RIPPLE VOLTAGE TIME (1 s/DIVISION) GATE DRIVE FALL TIME TIME (10ns/DIVISION) CURRENT SHARING BETWEEN INDUCTORS TIME (500ns/DIVISION) REV. 1.0.0 5/10/01 (Continued) GATE DRIVE RISE TIME TIME (50ns/DIVISION) ADAPTIVE GATE DELAY TIME (50ns/DIVISION) POWER GOOD ...
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FAN5091 Typical Operating Characteristics Droop vs Droop T 180 160 140 120 100 Droop Application Circuit L1 (Optional) +5V + VID4 ...
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PRODUCT SPECIFICATION Table 2. FAN5091 Application Bill of Materials for Figure 1 Reference Manufacturer Part # Quantity C1-3 Panasonic ECU-V1H104ZFX C Rubycon IN 16ZL1000M C Rubycon OUT 6.3ZL1500M D1-2 Motorola MBRD835L L1 Any L2-3 Any Q1, Q3 Fairchild FDB7030B Q2, ...
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FAN5091 L1 (Optional) +5V + VID4 VID3 VID2 VID1 VID0 ENABLE/ PWRGD R1 +5V Figure 2. Application Circuit for 69A Willamette Low-Frequency ...
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PRODUCT SPECIFICATION Table 3. FAN5091 Application Bill of Materials for Figure 2 Reference Manufacturer Part # C1-3 Panasonic ECU-V1H104ZFX C Rubycon IN 16ZL1000M C Rubycon OUT 6.3ZL1500M D1-2 Motorola MBRB154SCT L1 Any L2-3 Coiltronics HC2-1R0 Q1, Q4 Fairchild FDB7030BL Q2-3, ...
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FAN5091 L1 (Optional) +5V + VID4 VID3 VID2 VID1 VID0 ENABLE/ PWRGD R1 +5V +12V Figure 3. Application Circuit for 35A High-Frequency ...
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PRODUCT SPECIFICATION Table 4. FAN5091 Application Bill of Materials for Figure 3 Reference Manufacturer Part # C1-3 Panasonic ECU-V1H104ZFX C Rubycon IN 16ZL1000M C Rubycon OUT 6.3ZL1500M D1-2 Motorola MBRD835L L1 Any L2-3 Any Q1-4 Fairchild FDB6690A R1 Any R2 ...
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FAN5091 Application Information Operation The FAN5091 Controller The FAN5091 is a programmable synchronous multi-slice DC-DC controller IC. When designed around the appropriate external components, the FAN5091 can be configured to deliver more than 50A of output current, as appropriate for ...
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PRODUCT SPECIFICATION its on-time. Each slice has its own power ground pin, to per- mit the slices to be placed in different locations without affecting measurement accuracy. For best results impor- tant to connect the PGND and SW ...
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FAN5091 BYPASS Reference The internal logic of the FAN5091 runs on 5V. To permit the IC to run with 12V only, it produces 5V internally with a linear regulator, whose output is present on the BYPASS pin. This pin should ...
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PRODUCT SPECIFICATION Thermal Design Considerations Because of the very large gate capacitances that the FAN5091 may be driving, the IC may dissipate substantial power important to provide a path for the IC’s heat to be removed, to avoid ...
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FAN5091 f = DC/DC converter switching frequency ESR = Equivalent series resistance of all output capacitors in parallel Vripple = Maximum peak to peak output ripple voltage budget. One other limitation on the minimum size of the inductor is caused ...
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PRODUCT SPECIFICATION PCB Layout Guidelines • Placement of the MOSFETs relative to the FAN5091 is critical. Place the MOSFETs such that the trace length of the HIDRV and LODRV pins of the FAN5091 to the FET gates is minimized. A ...
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FAN5091 Mechanical Dimensions – 24 Lead TSSOP Inches Millimeters Symbol Min. Max. Min. A — .047 — A1 .002 .006 0.05 B .007 .012 0.19 C .004 .008 0.09 D .303 .316 7.70 E .169 .177 4.30 e .026 BSC ...
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... FAN5091 Ordering Information Product Number Description FAN5091MTC 5V 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; ...