1
High Density - Board Mounted Power Division
Powering Communications and Technology
50
55
60
65
70
75
80
85
90
95
12345678910
TECHNICAL SPECIFICATIONS
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 specs,
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.
• High Efficiency
• Industry Standard Half-
Brick
• Open-Frame Packaging
• 100°C Baseplate
Operation
• Water Washable
• “True-Trim” Option
• 1500V Isolation
• Positive or Negative
Logic
DESCRIPTION
FEATURES
HES SERIES
150 WATT
Turn-On Time 10 ms
Remote Shutdown Positive Or Negative Logic
Remote Shutdown Reference Vin Negative
Switching Frequency 2.5 & 3.3, 5V Model 200 kHz, 300 kHz (Respectively)
Isolation
Input - Output 1500 VDC
Input - Case 1050 VDC
Output - Case 500 VDC
Temperature Coefficient 0.02%/°C
Case Temperature
Operating Range -40 To +100°C
Storage Range -40 To +125°C
Thermal Shutdown Range 105 To 115°C
Vibration, 3 Axes, 5 Min Each 5 g, 10 - 55 Hz
MTBF†(Bellcore Tr-nwt-000332) 1.8 X 106hrs
Safety UL 1950, Csa 22.2-950, En60950
Weight (Approx.) 1.4 oz
†MTBF predictions may vary slightly from model to model.
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.
Safety: Agency approvals may vary from model to model.
Please consult factory for specific model information.
Units are water-washable and fully compatible with commercial
spray or immersion post wave-solder washing equipment.
Setpoint Accuracy ±1%
Line Regulation Vin Min. - Vin Max., Iout Rated 0.2% Vout
Load Regulation Iout Min. - Iout Max., Vin Nom. 0.2% Vout
Remote Sense Headroom 0.5 VDC
Minimum Output Current 10 %
Dynamic Regulation, Loadstep 25% Iout
Pk Deviation 4% Vout
Settling Time 500 ms
Voltage Trim Range ±10%
Short Circuit / Overcurrent Protection Shutdown / Hiccup
Current Limit Threshold Range, % of Iout Rated 110 - 130%
OVP Trip Range 120 - 140% Vout Nom.
OVP Type Self Recovering
Voltage Range
24 VDC Nominal 18 - 36 VDC
48 VDC Nominal 36 - 72 VDC
Reflected Ripple 50 mA
Input Reverse Voltage Protection Shunt Diode
Input Undervoltage Lockout / Hysteresis <34V/1V Nom.
Output
Input
Efficiency vs. Load (48V Input)
Notes
General