PRM48AY480X400A00 Datasheet, PDF (11/44 Pages) Vicor Corporation – High Efficiency Converter

PRM48Ay480x400A00
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).
SGND: Signal Ground
• All control signals must be referenced to this pin, with the exception of VC
• SGND is internally connected to -IN and -OUT
Signal Type
State
Attribute
Symbol
Conditions / Notes
Analog Input / Output
Maximum Allowable
Any
Current
I_SGND
Min
Typ
-100
Max
100
Unit
mA
TRIM
• TRIM is used to select operating mode and trim the output voltage in Adaptive Loop Operation
• Internal pullup to V_{CC_INT} through 10 kΩ resistor
• When pulled below 0.45 V during power up, Remote Sense / Slave Operation is selected
• When allowed to pull up above 0.55 V during power up, Adaptive Loop Operation is selected
• Operating mode is detected during power up and cannot be changed unless input power is cycled
Signal Type
State
Normal
Attribute
Internally Generated
VCC
Symbol
V_{CC_INT}
Conditions / Notes
Analog Input
Operation
Internal Pullup
Resistance to V_{CC_INT}
Mode Detection
Delay
R_{TRIM_INT} 0.5% tolerance resistor
From ENABLE high to mode detected,
t_{MODE_DETECT}
after V_IN first applied
Mode
Detect
Remote Sense
Enable Threshold
V_{RS_MODE_EN}
Pull below this value during first
start up after application of power to
enable Remote Sense / Slave Operation
Remote Sense
Disable Threshold
V_{RS_MODE_DIS}
Pull above this value during first
start up after application of power to
enable Adaptive Loop Operation
Min
3.20
9.83
100
0.45
Typ
3.28
10.00
140
Max
3.36
10.18
200
0.55
Unit
V
kΩ
µs
V
V
PRM^TM Regulator
Page 11 of 44
Rev 1.4
11/2015
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