Series KR
DC to DC Converters
Single and Dual Output
Wide Input Range up to 3.33:1
Isolated Regulated up to 20 Watt DC to DC Converters
Full Regulated All Units Shielded
This series of high efficiency, wide input range, encapsulated regulators come in 51 different models. These
units feature a 500 VOLT DC input to output isolation in both single and dual output models. The KR Series
will operate over a temperature range of 25º C TO +70º C with no heat sink or electrical derating. These
units are excellent for applications where input voltage varies dramatically, yet a high efficiency and output
voltage regulation must be maintained.
FEATURES
Single and dual isolated outputs
Voltage regulation over input range of
Unit
KRA
KRB
KRC
Low
18V
36V
18V
High
36V
60V
60V
TYPICAL CHARACTERISTICS:
Test conditions: 25º C ambient
Operating temperature: 25º C to +70º C ambient
Output voltage tolerance: ± 2.5% at typcial input
voltage
Output voltage temperature coefficient: 0.02% /
º C
Storage temperature: 55º C to +125º C
Short circuit protection: Temporary
Operating frequency: 40Khtz, typical
Encapsulated semiconductors, conservatively
rated for maximum reliability.
OPTIONS AVAILABLE
Load regulation (see table for typical variation at
different loads)
Selected MilStd 883
Line regulation = Typical values
Expanded operating temp.
(55º C to +85º C)
1836V DC = ±1.5%
Stabilization Bake (125º C ambient)
Temperature Cycle (55º C to +125º C)
3660V DC = ±1.5%
High Temp, full power burn in (100% power,
125º C case temp)
1860V DC = ±3.0%
High efficiency up to 83%
Will operate over a temperature range of 25º
C to
+70º C with no heat sink or electrical derating
6 sided shielding
Isolation 100 megohms at 500 volts DC
External output trimming pin standard +5%
Each unit is supplied with an external control
pin. This "C" pin, when connected to the
negative () input, will disable the unit, allowing
for remote shutdown.
Out
Volt
Max. Max.
INPUT Ripple
Output
EFF.@
Load Output
Current @
Pico
Input Voltage
Full
Out Volt
Current Power
Full
Full
Part Voltage DC
Load
Tolerance
mA (watts)
Load LD.
Number Range Per
Typical
(± %)*
Per
Per
Typical 1
Output
(%)*
Output Output
(mA)* 1MHz
BW
mv pp
KRA5D 1836
5
2000
10
78
950
60
0.75
KRA9D 1836
9
1111
10
80
925
60
0.50
KRA12D 1836
12
833
10
78
950
60
0.50
KRA15D 1836
15
667
10
78
950
60
0.50
KRA24D 1836
24
417
10
81
915
60
0.50
KRA28D 1836
28
357
10
82
905
60
0.50
KRA48D 1836
48
208
10
83
890
80
0.50
KRB5D 3660
5
2000
10
78
535
60
0.75
KRB9D 3660
9
1111
10
80
520
60
0.50
KRB12D 3660
12
833
10
78
535
60
0.50
KRB15D 3660
15
667
10
78
535
60
0.50
KRB24D 3660
24
417
10
81
515
60
0.50
KRB28D 3660
28
357
10
82
510
60
0.50
KRB48D 3660
48
208
10
83
500
80
0.50
KRC5D 1860
5
2000
10
78
660
60
0.75
KRC9D 1860
9
1111
10
80
640
60
0.50
KRC12D 1860
12
833
10
78
660
60
0.50
KRC15D 1860
15
667
10
78
660
60
0.50
KRC24D 1860
24
417
10
81
635
60
0.50
KRC28D 1860
28
357
10
82
625
60
0.50
KRC48D 1860
48
208
10
83
615
80
0.50
* Measurements taken with input voltage set at mid value
** 10% minimum load require
Series KR Single Output
C: is control pin
NOTE: all radii typ. 7/64"
**
VLD.
Reg.
25%
100%
Load
(±
%)*
2.50
1.25
1.00
1.00
0.50
0.50
0.50
2.50
1.25
1.00
1.00
0.50
0.50
0.50
2.50
1.25
1.00
1.00
0.50
0.50
0.50
Line
Regu Price
lation (US $)
(± %)
1.50
0.75
0.50
0.50
0.25
0.25
0.25
1.00
0.50
0.50
0.50
0.25
0.25
0.25
2.00
1.00
0.75
0.75
0.50
0.50
0.50
259.54
259.54
259.54
259.54
259.54
259.54
278.94
297.55
297.55
297.55
297.55
297.55
297.55
319.80
315.90
315.90
315.90
315.90
315.90
315.90
339.52
Each unit is supplied with an external control
pin. This "C" pin,
when connected to the negative () input, will
disable the unit,
allowing for remote shutdown.
Series KR Single
Output
bottom view
Larger Size Drawing
Larger Size Schematic
Typical Weight: 165 Grams
Series KR Dual Output
C: is control pin
NOTE: all radii typ. 7/64"
Each unit is supplied with an external
control pin. This "C" pin,
when connected to the negative () input,
will disable the unit,
allowing for remote shutdown.
Series KR Dual
Output
bottom view
Larger Size Drawing
Larger Size Schematic
Typical Weight: 165 Grams
For immediate engineering assistance or to place an order:
Call Toll Free: 8004311064
PICO Electronics, Inc.
143 Sparks Ave. Pelham, NY 108031810
Tel: 9147381400 or Fax: 9147388225
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