a division of cui inc date page series: description: 06/2010 1 of 4 digital dc-dc pol converter NDM1-25 20050 sw 112 th ave. tualatin, oregon 97062 phone 503 . 612 . 2300 fax 503 . 612 . 2382 www.novumdigital.com preliminary: specifications subject to change for a detailed specification, please contact cui system vin 8.5 ~ 14 v vout 0.6 ~ 2.5 v iout 25 a footprint (w x l x h) 0.5? x 1.075? x 0.47? efficiency 92% rohs auto-control? technology ?automatic adjustment of control loop compensation (adapts to changes in external output capacitance) ?guaranteed stability ?superior transient response precise power conversion ?8.5 ~ 14 v dc input ?programmable output ?differential voltage sense ?10 mv set point accuracy pmbus compliant ?on-board digital communication bus fully licensed digital module monitoring ?precise current monitoring ?temperature sensing power management ?voltage sequencing ?voltage margining ?synchronize controllers for multiphase operation ?programmable soft start and soft stop ?pre-bias startup ?high reliability non-volatile otp memory to 125c ?low current (<2 a) disable state protection features ?input under voltage lockout ?output over voltage protection ?output over current protection ?fast over current protection ?over temperature protection mounting ?through hole ?modules are footprint compatible specs features auto-control is a trademark of powervation
a division of cui inc date page series: description: 06/2010 2 of 4 digital dc-dc pol converter NDM1-25 20050 sw 112 th ave. tualatin, oregon 97062 phone 503 . 612 . 2300 fax 503 . 612 . 2382 www.novumdigital.com preliminary: specifications subject to change for a detailed specification, please contact cui output parameter conditions/description min nom max units voltage adjustment range 1 set using pmbus 0.6 2.5 v voltage accuracy 1 %nom current range 025a line regulation v in = 8.5 ~ 14 v -1 1 % load regulation v in = 12 v -1 1 % voltage monitoring accuracy -1 1 % temp. monitoring accuracy -5 5 c sense+ input bias current sense+ = 4v 864 1,000 1,185 a sense- input bias current sense- = 0.1v 20 25 30 a ramp-up time 0.5 147.5 ms on time delay range 0 1,000 ms start-up time 50 ms load transient voltage deviation -45/33 mv load transient recovery time v in = 12 v, c o = 470 f, v o = 1 v 150 s recommended minimum output capacitor 470 f voltage ripple 8 25 mvp-p voltage margin range 1 -20 5 20 % input / supply parameter conditions/description min nom max units voltage 8.5 12 14 v idle current sysgood, no output, v in = 12 v 50 ma uvlo turn-on threshold 7.5 8.7 v uvlo turn-off threshold 7.5 8.1 v voltage monitoring accuracy -50 50 mv current monitoring accuracy -8 8 % general / power / efficiency parameter conditions/description min nom max units output power 050w efficiency v in = 12 v, v o = 1 v, 50% of maximum i o v in = 12 v, v o = 1 v, maximum i o v in = 12 v, v o = 2.5 v, 50% of maximum i o v in = 12 v, v o = 2.5 v, maximum i o 86.9 83.3 92.0 89.9 % % % % idle power sysgood, no output, v in = 12 v 0.6 w switching frequency 2 375 500 khz 2. factory default set to 500 khz 1.voltage absolute maximum of 2.8 v
a division of cui inc date page series: description: 06/2010 3 of 4 digital dc-dc pol converter NDM1-25 20050 sw 112 th ave. tualatin, oregon 97062 phone 503 . 612 . 2300 fax 503 . 612 . 2382 www.novumdigital.com preliminary: specifications subject to change for a detailed specification, please contact cui 1.0v / 25a typical characteristics 14 vin 12 vin 10 vin 8.5 vin 50 55 60 65 70 75 80 85 90 0 5 10 15 20 25 e?ciency (%) output current (a) 50 55 60 65 70 75 80 85 90 0 5 10 15 20 25 e?ciency (%) output current (a) 12?1/? time axis -1.453 ms -1.3 ms 153.0 s 6.536 khz channel a -42.7 mv 33.1 mv 75.8 mv 2010-2-20 5:29:01 98.15 58.15 18.15 -21.85 -61.85 -101.9 -141.9 -181.9 -221.9 -261.9 -301.9 mv ac 209.8 189.8 169.8 149.8 129.8 109.8 89.81 69.81 49.81 29.81 9.815 mv dc -2.511 -2.011 -1.511 -1.011 -0.511 -0.011 0.489 0.989 1.489 1.989 2.489 ms efficiency output load transient response start-up shut-down output ripple and noise conditions (applies to all graphs unless stated otherwise): v i = 12 v i o = 25 a load co = 1,500 f output voltage response to load current step-change (5-15-5 a) top trace: output voltage bottom trace: load current c o = 470 f top trace: output voltage (0.5 v / div) bottom trace: input voltage (5 v / div) time scale: (10 ms / div) trace: output voltage (2 mv / div) time scale: (2 s / div) top trace: output voltage (0.5 v / div) bottom trace: input voltage (5 v / div) time scale: (20 ms / div)
a division of cui inc date page series: description: 06/2010 4 of 4 digital dc-dc pol converter NDM1-25 20050 sw 112 th ave. tualatin, oregon 97062 phone 503 . 612 . 2300 fax 503 . 612 . 2382 www.novumdigital.com preliminary: specifications subject to change for a detailed specification, please contact cui 0.113 2.86 0.390 9.91 1.27 0.050 (17 plcs) 0.050 (18 plcs) 1.52 0.060 (6 plcs) 2.54 0.100 (4 plcs) 4.13 0.163 0.400 10.16 1.27 2.86 0.113 4.0 0.157 7.2 0.283 0.067 1.7 11.9 0.469 12.7 0.500 27.31 1.075 1 171615141312111098765432 vo gnd vin 24 23 22 21 20 19 18 recommended footprint: top view rev. description date a new drawing 2/22/2010 specified 0.1mm unless otherwise tolerance: website: www.cui.com a 20050 sw 112th ave. tualatin, or 97062 phone: 503-612-2300 800-275-4899 fax: 503-612-2383 rohs scale: NDM1-25 copyright 2010 by cui inc. title: mm [inches] zrj NDM1-25 pc file name: approved by: drawn by: units: part no. NDM1-25 3:1 rev: mechanical drawing (through-hole)
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