PRM48JH480X250A02 Datasheet, PDF (13/45 Pages) Vicor Corporation – High Efficiency Converter

PRM48JH480x250A02
Signal Specifications (Cont.)
Specifications apply over all line and load conditions, T_INT = 25ºC and output voltage from 20.0 V to 55.0 V, unless otherwise noted.
Boldface specifications apply over the temperature range of -40ºC < T_INT < 125ºC (T-grade).
AL: Adaptive Loop (NOT APPLICABLE)
• Provides Adaptive Loop load line programming in Adaptive Loop Operation
• Internal pullup to V_{CC_INT} through 10 kΩ resistor
• Sampled prior to every start up to detect if Adaptive Loop load line is active or inactive
• Leave open to disable Adaptive Loop load line
• Not used in Remote Sense Operation
Signal Type
State
Attribute
Symbol
Conditions / Notes
AL Enable Threshold
V_{AL_EN}
Pull below this value during start up
to enable AL load line
AL Disable Threshold
V_{AL_DIS}
Pull above this value during start up
to disable AL load line
Start up Minimum AL Disable
Minimum AL resistance required
R_{AL_DIS_MIN}
Resistance
to disable AL load line
AL Capacitance
(External)
C_{AL_EXT}
Analog Input
AL Sample Delay
Internally generated
VCC
t_{ENABLE_AL}
V_{CC_INT}
From ENABLE high to AL sampled
Internal Pullup
Resistance to V_{CC_INT}
R_{AL_INT} 0.5% tolerance resistor
Normal
Operation
AL Pin Analog Range
AL Gain
AL Load Line Accuracy
V_{AL_RANGE}
G_AL
%_{ACC_LL_AL}
Positive correction slope, VT inactive
Full load slope accuracy exclusive
of external resistor tolerance
AL Load Line Resolution LL_{AL_RES}
Maximum Output
Maximum increase from no
V_{OUT_AL_MAX}
Referred Compensation
load setpoint, V_OUT ≤ 55.0 V
AL Latency
AL Bandwidth
t_{AL_LAT}
BW_AL
-3dB point
Min
3.20
9.83
Typ
3.28
10.00
Max
3.36
10.18
Unit
V
V
MΩ
pF
µs
V
kΩ
V
Ω/V
%
mΩ
V
µs
kHz
PRM^TM Regulator
Page 13 of 45
Rev 1.1
09/2015
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