DCM300P120x400A40
Electrical Specifications (cont.)
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.
Attribute
Symbol
Conditions / Notes
Min
10
Typ
Max
Unit
Power Output Specifications (Cont.)
At 10 kHz, excludes component tolerances
See state diagram
Output capacitance, ESR (ext.)
Initialization delay
RCOUT-EXT
tINIT
mΩ
ms
25
40
From rising edge EN, with VIN pre-applied. See timing
diagram
Output turn-on delay
Output turn-off delay
tON
200
µs
µs
tOFF
From falling edge EN. See timing diagram
600
100
At full rated resistive load. Typ spec is 1-up with min
COUT-EXT. Max spec is for arrays with max COUT-EXT
During startup, VOUT must achieve this threshold before
Soft start ramp time
tSS
36
ms
VOUT threshold for max
rated load current
VOUT-FL-THRESH
IOUT-START
VOUT-MONOTONIC
6.0
V
A
output can support full rated current
Max load current at startup while VOUT
IOUT at startup
3.33
is below VOUT-FL_THRESH
Monotonic soft-start threshold
voltage
Output voltage rise becomes monotonic with 10% of
preload once it crosses VOUT-MONOTONIC
6.0
2
V
This refers to the minimum time a module needs to be
in the disabled state before it will attempt to start via EN
Minimum required disabled duration
tOFF-MIN
ms
This refers to the minimum time a module needs to be in
tOFF-MONOTONIC the disabled state before it is guaranteed to exhibit
monotonic soft-start and have predictable startup timing
Minimum required disabled duration
for predictable restart
100
ms
Voltage deviation (transient)
Settling time
%VOUT-TRANS
<10
8.0
%
Minimum COUT_EXT (10 ↔ 90% load step), excluding
load line.
tSETTLE
ms
Powertrain Protections
Input Voltage Initialization threshold
Input Voltage Reset threshold
VIN-INIT
VIN-RESET
VIN-UVLO-
VIN-UVLO+
VIN-OVLO+
VIN-OVLO-
Threshold to start tINIT delay
75
V
V
V
V
V
V
Latching faults will clear once VIN falls below VIN-RESET
50
Input undervoltage recovery threshold
Input undervoltage lockout threshold
Input overvoltage lockout threshold
Input overvoltage recovery threshold
125
170
178
455
See Timing diagram
See Timing diagram
423
Output overvoltage threshold
Output overvoltage threshold
VOUT-OVP
From 25% to 100% load. Latched shutdown
15.8
V
V
VOUT-OVP-LL
From 0% to 25% load. Latched shutdown
16.2
125
Minimum current limited VOUT
Overtemperature threshold (internal)
Power limit
VOUT-UVP
TINT-OTP
PLIM
Over all operating steady-state line and trim conditions
5
V
°C
W
650
VIN overvoltage to cessation of
powertrain switching
tOVLO-SW
Independent of fault logic
For fault logic only
1.5
µs
VIN overvoltage response time
VIN undervoltage response time
Short circuit response time
tOVLO
tUVLO
tSC
200
100
200
µs
ms
µs
Powertrain on, operational state
See Timing diagram
Short circuit, or temperature fault
recovery time
tFAULT
1
s
DCM™ DC-DC Converter
Rev 1.2
vicorpower.com
800 927.9474
Page 6 of 25
07/2015
VICOR [ VICOR CORPORATION ]
