HES DC/DC Series Data Sheet
Half-Brick Converters
Description
HES single-output DC/DC converters provide up to 150
watts of output power in an industry-standard, half-brick
package and footprint. These units feature ultra-high
efficiency, Class A conducted noise specifications, and
fixed switching frequency. The HES is designed with
open-frame packaging, along with planar magnetics to
provide maximum useable power with minimal thermal
constraints. The HES is especially suited to harsh
telecom, networking, and industrial applications, and is
fully compatible with production board washing processes.
Features
• High efficiency
• Industry standard half-brick • “True-Trim” option
• Open-frame packaging • 1500V isolation
• 100°C baseplate operation • Positive or negative
logic
• Water washable
Technical Specifications
Input
Voltage Range
24 VDC Nominal
48 VDC Nominal
Reflected Ripple
18 - 36 VDC
36 - 72 VDC
50 mA
Input Reverse Voltage Protection
Input Undervoltage Lockout / Hysteresis
Shunt Diode
<34V/1V Nom.
Output
Setpoint Accuracy
1%
Line Regulation V Min. - V Max., I
Rated
0.2% V
Efficiency vs. Load (48V Input)
in
in
out
out
Load Regulation I
Remote Sense Headroom
Minimum Output Current
Min. - I
Max., V Nom.
0.2% V
out
out
out in
95
90
85
80
0.5 VDC
10 %
Dynamic Regulation, Loadstep
Pk Deviation
Settling Time
25% I
out
4% V
out
500 ms
10%
75
HES033ZE
Voltage Trim Range
70
65
60
55
50
HES075ZG
HES100ZE
Short Circuit / Overcurrent Protection
Current Limit Threshold Range, % of I
OVP Trip Range
Shutdown / Hiccup
110 - 130%
Rated
out
120 - 140% V Nom.
out
OVP Type
Self Recovering
General
1
2
3
4
5
6
7
8
9
10
X10 = LOAD %
Turn-On Time
10 ms
Remote Shutdown
Positive Or Negative Logic
Remote Shutdown Reference
Switching Frequency 2.5 & 3.3, 5V Model
Isolation
V Negative
200 kHz, 300 kHz (Respectively)
in
Notes
†
MTBF predictions may vary slightly from model to model.
Input - Output
Input - Case
Output - Case
Temperature Coefficient
Case Temperature
1500 VDC
1050 VDC
500 VDC
0.02%/°C
Specifications typically at 25°C, normal line, and full load, unless
otherwise stated.
Soldering Conditions: I/O pins, 260°C, ten seconds; fully
compatible with commercial wave-soldering equipment.
Operating Range
Storage Range
-40 To +100°C
-40 To +125°C
105 To 115°C
5 g, 10 - 55 Hz
Thermal Shutdown Range
Vibration, 3 Axes, 5 Min Each
Safety: Agency approvals may vary from model to model. Please
consult factory for specific model information.
6
†
MTBF (Bellcore Tr-nwt-000332)
1.8 X 10 hrs
Safety
Weight (Approx.)
UL 1950, CSA 22.2-950, EN60950
1.4 oz
Units are water-washable and fully compatible with commercial spray
or immersion post wave-solder washing equipment.
REV. JUL 24, 2003
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