HEQB
High -Efficiency Quarter Brick Single Output
27 to 100 W Power
The HEQB family of standard Dc-Dc converters features a small footprint for significant space savings.
High current density and wide voltage range simplify their use in a wide variety of distributed power
architecture (DPA) designs.
Features:
Output power: up to 100 W
High efficiency: up to 92%
Power density up to 83 W/in
3
Current density up to 9 A/in
2
Industry standard pinout and footprint
Adjustable output voltage with industry
standard trim equation
Designed to meet applicable NEBS standards
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General Specifications:
Input voltage range: 36 to 75 Vdc, 48 Vdc nominal
Fixed switching frequency: 250 kHz
Remote sense
Primary remote On/Off
Wide operating temperature range: -40°C to +100°C
Input to output isolation: 2000 V, 10 MΩ
Safety/Regulatory Certified:
cULus, CSA, CSA/US, TUV, KEMA (CB Scheme)
M
ODEL
S
UMMARY AND ORDERING CODE
Model Number
HEQB-25A-48V-3.3V
HEQB-25A-48V-2.5V
HEQB-25A-48V-1.8V
HEQB-25A-48V-1.5V
HEQB-20A-48V-5V
HEQB-15A-48V-3.3V
HEQB-15A-48V-2.5V
HEQB-15A-48V-1.8V
P
max
83 W
63 W
45 W
38 W
100 W
50 W
38 W
27 W
Iout
25 A
25 A
25 A
25 A
20 A
15 A
15 A
15 A
Vout
3.3 V
2.5 V
1.8 V
1.5 V
5.0 V
3.3 V
2.5 V
1.8 V
O
RDERING
E
XAMPLE FOR
M
AGNETEK
HEQB Q
UARTER
B
RICKS
Products
Family Code
HEQB
Rated
Output Current
15 A
20 A
25 A
30 A
Input
Voltage
48 V
Output
Voltage
Option1-
Remote On/Off Logic
Option 2-
Mechanical
Option 3-
PIN Length
Default→0.15”
1→0.25”
2→0.11”
5V
Default→Negative Logic
Default→Open Frame
3.3 V
P→Positive Logic
PL→Cold Plate
2.5 V
1.8 V
1.5 V
Example: HEQB-25 A-48 V-3.3 V-P-PL: Standard half brick with Positive Logic and Cold Plate options.
Contact Factory for availability of specific model configurations.
106
HEQB
High -Efficiency Quarter Brick Single Output
27 to 100 W Power
Mechanical drawings
DIMENSIONS ARE IN INCHES AND (MILLIMETERS)
TOLERANCE: x.xx in.
±0.02
in. (0.5 mm)
2.30
(58.42)
ø0.06 (2x)
(ø1.5 (2x))
0.15
(3.68)
2.00
(50.80)
ø0.04 (6x)
(ø1 (6x))
(7.62)
(36.83)
7
2
6
5
3
4
1.45
(10.8)
0.425
(7.62)
0.30
0.425
BOTTOM VIEW
SIDE VIEW
0.366
Pin
1
2
3
4
5
6
7
8
Nomenclature
Vin(-)
On/Off
Vin(+)
Vout(+)
S(+)
Trim
S(-)
Vout(-)
(9.30)
(3.81)
0.15
Description
Return terminal for the input bus
Primary remote enable/disable terminal, TTL compatible
Positive terminal for the input bus
Positive output terminal
Positive remote sense terminal
Remote output voltage trim terminal
Negative remote sense terminal
Dc Return terminal
V i s i t
o u r
w e b s i t e
f o r
t h e
m o s t
c u r r e n t
(10.8)
(3.81x4)
0.15x4
0.30
1
8
t e c h n i c a l
d a t a
107
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