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DCM4623XD2K53EYZZ Datasheet(PDF) 8 Page - Vicor Corporation |
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DCM4623XD2K53EYZZ Datasheet(HTML) 8 Page - Vicor Corporation |
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8 / 25 page  Signal Specifications Specifications apply over all line, trim and load conditions, internal temperature TINT = 25ºC, unless otherwise noted. Boldface specifications apply over the temperature range of -40°C < TINT < 125°C for T grade and -55°C < TINT < 125°C for M grade. Enable: EN • The EN pin enables and disables the DCM converter; when held low the unit will be disabled. • The EN pin has an internal pull-up to VCC and is referenced to the -IN pin of the converter. SIGNAL TYPE STATE ATTRIBUTE SYMBOL CONDITIONS / NOTES MIN NOM MAX UNIT DIGITAL INPUT Any EN enable threshold VENABLE-EN 2.31 V EN disable threshold VENABLE-DIS 0.99 V Internally generated VCC VCC 3.21 3.30 3.39 V EN internal pull up resistance to VCC RENABLE-INT 9.5 10.0 10.5 k Ω Trim: TR • The TR pin enables and disables trim functionality when VIN is initially applied to the DCM converter. When Vin first crosses VIN-UVLO+, the voltage on TR determines whether or not trim is active. • If TR is not floating at power up and has a voltage less than TR trim enable threshold, trim is active. • If trim is active, the TR pin provides dynamic trim control with at least 30Hz of -3dB control bandwidth over the output voltage of the DCM converter. • The TR pin has an internal pull-up to VCC and is referenced to the -IN pin of the converter. SIGNAL TYPE STATE ATTRIBUTE SYMBOL CONDITIONS / NOTES MIN NOM MAX UNIT DIGITAL INPUT Startup TR trim disable threshold VTRIM-DIS Trim disabled when TR above this threshold at power up 3.20 V TR trim enable threshold VTRIM-EN Trim enabled when TR below this threshold at power up 3.15 V ANALOG INPUT Operational with Trim enabled Internally generated VCC VCC 3.21 3.30 3.39 V TR pin functional range VTRIM-RANGE 0.00 2.46 3.16 V VOUT referred TR pin resolution VOUT-RES With VCC = 3.3 V 62 mV TR internal pull up resistance to VCC RTRIIM-INT 9.5 10.0 10.5 k Ω Fault: FT • The FT pin is a Fault flag pin. • When the module is enabled and no fault is present, the FT pin does not have current drive capability. • Whenever the powertrain stops (due to a fault protection or disabling the module by pulling EN low), the FT pin output Vcc and provides current to drive an external ciruit. • When module starts up, the FT pin is pulled high to VCC during microcontroller initialization and will remain high until soft start process starts. SIGNAL TYPE STATE ATTRIBUTE SYMBOL CONDITIONS / NOTES MIN NOM MAX UNIT DIGITAL OUTPUT Any FT internal pull up resistance to VCC RFAULT-INT 474 499 524 k Ω FT Active FT voltage VFAULT-ACTIVE At rated current drive capability 3.0 V FT current drive capability IFAULT-ACTIVE Over-load beyond the ABSOLUTE MAXIMUM ratings may cause module damage 4 mA FT response time tFT-ACTIVE Delay from cessation of switching to FT Pin Active 200 µs DCM™ DC-DC Converter Rev 1.1 vicorpower.com Page 8 of 25 01/2017 800 927.9474 DCM4623xD2K53Eyzz |
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