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NDM3Z-90HT-B-ZZZ Datasheet(PDF) 5 Page - CUI INC |
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NDM3Z-90HT-B-ZZZ Datasheet(HTML) 5 Page - CUI INC |
5 / 33 page cui.com date 12/23/2015 │ page 5 of 33 CUI Inc │ MODEL: NDM3Z-90 │ DESCRIPTION: AUTO COMPENSATED, DIGITAL DC-DC POL CONVERTER PRODUCT ELECTRICAL SPECIFICATION (CONTINUED) parameter conditions/description min typ max units short circuit current (I SC) RMS, hiccup mode, V O = 1.0 V, 1.5 mΩ short 12 A efficiency (η) 50% of max I O V O = 0.6 V V O = 1.0 V V O = 1.8 V 87.6 91.4 94.3 % % % I O = max IO V O = 0.6 V V O = 1.0 V V O = 1.8 V 83.7 88.7 92.5 % % % power dissipation at max I O (d) V O = 0.6 V V O = 1.0 V V O = 1.8 V 10.5 11.5 13.1 W W W input idling power (P Ii)IO = 0 V O = 0.6 V V O = 1.0 V V O = 1.8 V 1.29 1.35 1.82 W W W input standby power (P CTRL) turned off with CTRL-pin 0.44 W switching frequency (f SW = 1/TSW) 320 kHz switching frequency range2 (f SW = 1/TSW) PMBus configurable FREQUENCY_SWITCH 200 640 kHz switching frequency set-point accuracy (f SW = 1/TSW) -5 5 % external sync pulse width (f SW = 1/TSW) 150 ns input clock frequency drift tol- erance (f SW = 1/TSW) external sync -10 10 % initialization time (T INIT) From VI > ~2.7 V to ready to be enabled 67 ms output voltage total on delay time (T ONdel_tot) enabled by input voltage enabled by CTRL pin T INIT + TONdel T ONdel output voltage on delay time (T ONdel) turn on delay duration range PMBus configurable TON_DELAY accuracy (actual delay vs set value) 3 5 -0/+2 250 ms ms ms output voltage off delay time3 (T OFFdel) turn off delay duration range PMBus configurable TOFF_DELAY accuracy (actual delay vs set value) 4 0 -0/+2 250 ms ms ms output voltage on/off ramp up time (0→100%,100→0% of V O) (T ONrise/TOFFfall) turn on ramp duration 5 ms turn off ramp duration Disabled in standard configuration. Turn off immediately upon expiration of turn off delay. ramp duration range PMBus configurable TON_RISE/TOFF_FALL 0 100 ms ramp time accuracy for standalone operation (ac- tual ramp time vs set value) 250 μs power good threshold (PG) rising falling 90 85 %V O %V O power good threshold range (PG) PMBus configurable POWER_GOOD_ON VOUT_UV_FAULT_LIMIT 0 100 %V O Notes: 1. Value refers to total (internal + external) effective output capacitance. Capacitance derating with VO typical for ceramic capacitors (bias characteristics) and temperature variations must be considered for the external capacitor(s). See section External Output Capacitors. 2. There are configuration changes to consider when changing the switching frequency, see section Switching Frequency. 3. The specified accuracy applies for off delay times larger than 4 ms. A value of 0 ms can be set to guarantee a fast shut-off, but this will force the device to Immediate Off behavior, even if soft-off, i.e. ramp-down, is configured. When setting 0 ms the actual delay will be 0 ms. For more information, please visit the product page. |
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