H48SC28016
450W DC/DC Power Module
FEATURES
High efficiency: 95% @ 28V/16A
Size:
61.0x57.9x10.8mm
(2.40”x2.28”x0.43”) w/o heat-spreader
61.0x57.9x12.5mm
(2.40”x2.28”x0.49”) with heat-spreader
Industry standard footprint and pinout
Fixed frequency operation
Input UVLO
OTP and output OVP
Output OCP hiccup mode
Output voltage trim range:
23~33V and 14~33V optional
Monotonic startup into normal and
pre-biased loads
1500V isolation and basic insulation
No minimum load required
No negative current during power or enable on/off
ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS18001 certified manufacturing facility
UL/cUL 60950-1 (US & Canada)
H48SC28016
Half Brick DC/DC Power Modules
36~75V in, 28V/16A out, 450W
H48SC28016, 36~75V input, isolated single output, Half Brick,
are full digital control DC/DC converters, it provides up to 450
watts of power in an industry standard, DOSA compliant
footprint and pin out; the typical efficiency is 95% at 48V input,
28V output and 16A load. There is a built-in digital PWM
controller in the H48SC28016, which is used to complete the
Vo feedback, PWM signal generation, fault protection, and
PMBUS communications, and so on. With the digital control,
many design and application flexibility, advanced performance,
and reliability are obtained.
DS_H48SC28016_12092020
OPTIONS
Negative or Positive Remote On/Off
Open frame/Heat spreader
Digital pins, PMBus
APPLICATIONS
Optical Transport
Data Networking
Communications
Servers
E-mail: dcdc@deltaww.com
http://www.deltaww.com/dcdc
P1
TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
NOTES and CONDITIONS
H48SC28016
Min.
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
Transient (100ms)
Operating Ambient Temperature
Storage Temperature
Input/output Isolation Voltage
INPUT CHARACTERISTICS
Operating Input Voltage
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Hysteresis Voltage
Maximum Input Current
No-Load Input Current
Off Converter Input Current
Inrush Current ( I2t)
Input Reflected-Ripple Current
Input Voltage Ripple Rejection
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Regulation
Over Load
Over Line
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
RMS
Operating Output Current Range
Output Over Current Protection(hiccup mode)
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient
Positive Step Change in Output Current
Negative Step Change in Output Current
Settling Time (within 1% Vout nominal)
Turn-On Transient
Start-Up Time, From On/Off Control
Start-Up Time, From Input
Output Capacitance (note1)
EFFICIENCY
100% Load
100% Load
60% Load
ISOLATION CHARACTERISTICS
Input to Output
Isolation Resistance
Isolation Capacitance
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On)
Logic High (Module Off)
ON/OFF Control, Positive Remote On/Off logic
Logic Low (Module Off)
Logic High (Module On)
ON/OFF Current (for both remote on/off logic)
Leakage Current (for both remote on/off logic)
Output Voltage Trim Range (note2)
Output Voltage Remote Sense Range
Output Over-Voltage Protection
GENERAL SPECIFICATIONS
MTBF
Weight
Weight
Over-Temperature Shutdown
(With heat spreader)
Over-Temperature Shutdown
( NTC resistor )
Typ.
0
100ms
-40
-55
Max.
Units
80
100
85
125
1500
Vdc
Vdc
Vdc
°C
°C
Vdc
36
48
75
Vdc
33.0
30.0
35.0
33.0
2
36.0
35.0
Vdc
Vdc
Vdc
A
mA
mA
A2s
mA
dB
Full Load, 36Vin
Vin=48V, Io=0A
Vin=48V, Io=0A
110
22
17
P-P thru 12µH inductor, 5Hz to 20MHz
120 Hz
80
50
1
Vin=48V, Io=Io.max, Tc=25°C
Io=Io, min to Io, max
Vin=36V to 75V
Tc=-40°C to 85°C
Over sample load, line and temperature
5Hz to 20MHz bandwidth
Vin=48V, Full Load, 50µF ceramic, 1000uF Electrolytic Capacitor
Vin=48V, Full Load, 50µF ceramic, 1000uF Electrolytic Capacitor
Vin=36V to75V
Output Voltage 10% Low
27.72
28.28
Vdc
±56
±560
28.84
mV
mV
mV
V
16
24
mV
mV
A
A
±56
27.16
100
30
0
17.6
48Vin, 50µF ceramic, 1000uF Electrolytic Capacitor, 0.1A/µs
75% Io.max to 50% Io.max
50% Io.max to 75% Io.max
Full load; 5% overshoot of Vout at startup, low ESR cap.
28
300
300
200
mV
mV
µs
80
100
mS
mS
µF
470
Vin=36V
Vin=48V
Vin=48V
5000
94.5
95
95.5
%
%
%
1500
6.9
Vdc
MΩ
nF
120
KHz
10
Von/off
Von/off
3.5
0.8
10
V
V
3.5
0.8
10
V
V
mA
Pout≦ max rated power,Io≦ Io.max, for suffix xxxB and xxxC
-50
+18
%
Pout≦max rated power,Io≦Io.max, for suffix xxxA and xxxH
Pout ≦ max rated power,Io ≦ Io.max
% of nominal Vout
-18
-1
125
+18
+10
150
%
%
%
Von/off
Von/off
Ion/off at Von/off=0.0V
Logic High, Von/off=5V
Io=80% of Io, max; Ta=25°C, airflow rate=300LFM
Without heat spreader
With heat spreader
2.9
62.0
93.5
Mhours
hours
grams
Refer to Figure 18 for Hot spot location (48Vin,80% Io)
110
°C
125
°C
grams
Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spots’ temperature is just for reference.
Note1: If the ambient temp is less than 0°C, double minimum output capacitance and additional 50uF ceramic capacitance is necessary.
Note2: For wider output voltage trim range and larger output capacitance, please contact Delta.
DS_H48SC28016_12092020
E-mail: dcdc@deltaww.com
http://www.deltaww.com/dcdc
P2
DIGITAL INTERFACE SPECIFICATIONS
(TA=25°C, airflow rate=400 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
NOTES and CONDITIONS
H48SC28016
Min.
PMBUS SIGNAL INTERFACE CHARACTERISTICS
Logic input high (VIH)
Logic input low ( VIL)
Logic output high (VOH)
Logic output low (VOL)
Input high level current (CLK, DATA, SMALERT)
Input low level current (CLK, DATA, SMALERT)
Sinking current (CLK,DATA,SMBALERT,C2)
PMBus Operating frequency range
CLK,DATA,SMBALERT,C2
CLK,DATA,SMBALERT,C2
CLK,DATA,SMBALERT,C2
CLK,DATA,SMBALERT,C2
Pin voltage=3.3V
Pin voltage=0V
Typ.
2.4
2.5
-10
-10
100
Max.
Units
3.6
0.8
3.6
0.4
10
10
4
400
Vdc
Vdc
Vdc
Vdc
uA
uA
mA
kHz
3
2.5
%
A
%
Vdc
°C
°C
Measurement System Characteristics
Output current reading accuracy
5A