MCP14628-E/MF Microchip Technology, MCP14628-E/MF Datasheet
MCP14628-E/MF
Specifications of MCP14628-E/MF
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MCP14628-E/MF Summary of contents
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... Bootstrapping for the high-side drive is internally implemented which allows for a reduced system cost and design complexity. The PWM input to the MCP14628 can be tri-stated to force both drive outputs low for true power stage shutdown. Light load system efficiency is improved by using the diode emulation feature of the MCP14628. ...
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... V CC CURRENT CS COMP SENSE V OSC IN GND OSCILLATOR FROM MCU Functional Block Diagram V CC FCCM R PWM Control Logic & Protection R GND DS22083A-page 2 C BOOT BOOT MCP14628 V UGATE CC PHASE FCCM PWM LGATE GND FB REF REFERENCE VOLTAGE Level Shift 12V SUPPLY CURRENT SENSE BOOT ...
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... MCP14628 Units Conditions V µA PWM pin floating FCCM µ PWM µ PWM +25°C, Note Ω ...
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... MCP14628 DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise noted, V Parameters Switching Times HIGHDR Rise Time LOWDR Rise Time HIGHDR Fall Time LOWDR Fall Time HIGHDR Turn-off Propagation Delay LOWDR Turn-off Propagation Delay HIGHDR Turn-on Propagation Delay LOWDR Turn-on Propagation Delay Tri-State Propagation Delay ...
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... FIGURE 2-5: vs. Temperature LOAD PDHL PDLH -40 -25 -10 FIGURE 2-6: vs. Temperature. MCP14628 1500 3000 4500 6000 7500 Capacitive Load (pF) Fall Times vs. Capacitive = 3,300 110 125 Temperature (°C) LOWDR Rise and Fall Time = 3,300 pF t PDLL 110 125 Temperature (°C) LOWDR Propagation Delay ...
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... MCP14628 Typical Performance Curves (Continued) Note: Unless otherwise indicated +25°C with 3,300 pF LOAD 60 Duty Cycle = 30 100 1000 Frequency (kHz) FIGURE 2-7: Supply Current vs. Frequency. FIGURE 2-8: DCM to CCM Transition Operation. FIGURE 2-9: Load Transition (0.5A - 15A). DS22083A-page 6 = 5.0V. CC 700 680 660 ...
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... Typical Performance Curves (Continued) Note: Unless otherwise indicated +25°C with V A FIGURE 2-13: HIGHDR and LOWDR Operation. © 2008 Microchip Technology Inc. MCP14628 = 5.0V. CC DS22083A-page 7 ...
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... HIGHDR and LOWDR to a low state. 3.4 Ground Pin (GND) The GND pin provides ground for the MCP14628 cir- cuitry. It should have a low impedance connection to the bias supply source return. High peak currents will flow out the GND pin when the low-side power MOSFET is being turned off ...
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... Microchip Technology Inc. 4.4 Tri-State PWM The PWM input pin of the MCP14628 controls the high current LOWDR and HIGHDR drive signals. These signals have three distinct operating modes depending upon the state of the PWM input signal. ...
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... MCP14628 4.5 Timing Diagram The PWM signal applied to the MCP14628 is suppled by a controller IC that regulates the power supply output. The timing diagram in Figure 4-1 depicts the PWM signal and the output signals of the MCP14628. PWM t PDHH HIGHDR t RH LOWDR PDLL FL PWM ...
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... There are two important states of the MCP14628 outputs, high and low. flow paths when the outputs of the MCP14628 are high and the power MOSFETs are turned on. Charge needed to turn on the low-side power MOSFET comes from the decoupling capacitor C ...
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... Figure 5-2 depicts the current flow paths when the outputs of the MCP14628 are low and the power MOSFETs are turned off. These current paths should also have low inductance and a small loop area to minimize voltage ringing and spiking. ...
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... Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. © 2008 Microchip Technology Inc. MCP14628 : Example CABA 0812 256 ...
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... MCP14628 D N NOTE TOP VIEW A3 DS22083A-page 14 b EXPOSED PAD E K BOTTOM VIEW A NOTE NOTE © 2008 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP14628 DS22083A-page 15 ...
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... MCP14628 N NOTE DS22083A-page φ α c β © 2008 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP14628 DS22083A-page 17 ...
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... MCP14628 NOTES: DS22083A-page 18 © 2008 Microchip Technology Inc. ...
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... APPENDIX A: REVISION HISTORY Revision A (March 2008) • Original Release of this Document. © 2008 Microchip Technology Inc. MCP14628 DS22083A-page 19 ...
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... MCP14628 NOTES: DS22083A-page 20 © 2008 Microchip Technology Inc. ...
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... Package MF = Dual Flat, No Lead (3x3mm Body), 8-Lead SN = Plastic SOIC (150 mil Body), 8-Lead © 2008 Microchip Technology Inc. MCP14628 . Examples: a) MCP14628-E/MF: 2A Synchronous Driver 8LD DFN Package b) MCP14628T-E/MF: Tape and Reel, 2A Synchronous Driver 8LD DFN Package c) MCP14628-E/SN: 2A Synchronous Driver ...
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... MCP14628 NOTES: DS22083A-page 22 © 2008 Microchip Technology Inc. ...
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... PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...
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... Fax: 886-3-572-6459 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2008 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...