Q48SC12025
300W DC/DC Power Modules
FEATURES
Input voltage range: 36V~75V
Output voltage range ( trim and PMBUS)
8V~13.2V
Fully regulated from 36 to 75Vin
High efficiency : 95.1% @ 48Vin/25A
Size:
58.4mm x 36.8mm x 11.2mm (2.3 x 1.45 x 0.44)
(without heat-spreader)
58.4mm x 36.8mm x 12.7mm (2.3 x 1.45 x 0.5)
(with heat-spreader)
Industry standard DOSA compliant pin out
Fully protected: Input UVLO, Output OCP and
OVP, OTP
Droop current sharing
1500V isolation
No minimum load required
Fixed frequency operation
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing facility
UL/CUL 60950-1 (US & Canada)
Delphi Series Q48SC12025, Quarter Brick Family
DC/DC Power Modules: 36~75Vin, 12Vout, 300W
OPTIONS
Positive or Negative On/Off logic
The Delphi series Q48SC12025, quarter brick, 36~75V input,
Droop current sharing
single output 12V, are full digital control DC/DC converter, and are
Digital pins
the latest offering from a world leader in power system and
Heat spreader
technology and manufacturing Delta Electronics, Inc. This
product provides up to 300 watts of power at 36~75V input in an
industry standard, DOSA compliant footprint and pin out. The
Q48SC12025 offers more than 95.1% high efficiency at 48V input,
12V output and 25A load. There is a built-in digital PWM controller
in the Q48SC12025 series, which is used to complete the Vo
APPLICATIONS
feedback, PWM signal generation, droop current sharing, fault
Datacom / Networking
protection, output voltage trim, on/off control and PMBUS
Wireless networks
communications, and so on. With the digital control, many design
Optical network equipment
and application flexibility, advanced performance, and reliability
Server and data storage
are obtained. The Q48SC12025 can be connected in parallel
Industrial / Test equipment
directly for higher power without adding external oring-fet.
Datasheet E-mail: dcdc@deltaww.com
DS_Q48SC12025_04062017
TECHNICAL SPECIFICATIONS
(T =25C, airflow rate=400 LFM, V =48Vdc, nominal Vout unless otherwise noted.)
A in
PARAMETER NOTES and CONDITIONS Q48SC12025
Min. Typ. Max. Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous 0 75 Vdc
Transient (100ms) 100ms 100 Vdc
On/off Pin Voltage -50 50 V
Other Pin Voltage Trim/Current Sharing, C2, Data, SMBAlert, Clock, Addr1, Addr0 -0.3 3.6 V
Output negative voltage 0.3 V
Operating ambient Temperature -40 85 C
Storage Temperature -55 125 C
Input/Output Isolation Voltage 1500 Vdc
INPUT CHARACTERISTICS
Operating Input Voltage 36 48 75 Vdc
Input Under-Voltage Lockout
Turn-On Voltage Threshold
34 36 Vdc
(Adjustable via PMBus, VIN_ON)
Turn-Off Voltage Threshold
31 34 Vdc
(Adjustable via PMBus, VIN_OFF)
Lockout Hysteresis Voltage 2 Vdc
Maximum Input Current Vin=36V, 100% Load 11 A
No-Load Input Current Vin=48V 80 110 140 mA
Off Converter Input Current Vin=48V 10 18 26 mA
Input Capacitance 100 uF
2
Inrush Current (I t) 1 A2S
Input Reflected-Ripple Current P-P thru 12H inductor, 5Hz to 20MHz 50 mA
Input Voltage Ripple Rejection 120Hz 50 dB
OUTPUT CHARACTERISTICS
The module without droop current sharing option code
Output Voltage Set Point
Vin=48V, Io=0A , Ta=25C 11.88 12 12.12 Vdc
(Adjustable via PMBus)
Output Voltage Regulation
Over Line Vin=36V to 75V, Io=100% load 40 mV
Over Load Vin=36V to 75V, Io=Io,min to Io,max 40 mV
Over tempearture Vin=36V to 75V, Io=100% load, Ta= -40C to 85C 120 mV
The module with droop current sharing option code
Output Voltage Set Point
Vin=48V, Io=0A , Ta=25C 12.28 12.4 12.52 Vdc
(Adjustable via PMBus)
Output Voltage Regulation
Over Line Vin=36V to 75V, Io=100% load 40 mV
Over Load Vin=36V to 75V, Io=Io,min to Io,max -650 -550 mV
Over tempearture Vin=36V to 75V, Io=100% load, Ta= -40C to 85C 120 mV
Both with and without droop current sharing option code
Output Voltage Trim and PMBUS Range Vin=36V to 75V, Pout max rated power,Io Io.max -33.3 10 %
Output Voltage Remote Sense Range (note 2) Vin=36V to 75V, Pout max rated power,Io Io.max 5.8 10 %
Output Over-Voltage Lockout
15.2 Vdc
(Adjustable via PMBus, VOUT_OV_FAULT_LIMIT)
Operating Output Current Range Full input voltage range 0 25 A
Output DC Current-Limit Inception 115 135 %
Output Capacitance 300 15000 F
Output Voltage Ripple and Noise Vin=48V, Full load, 20MHz bandwidth
Co= 300uF/16V (polymer ) + 10u/16V (Tantalum Capacitor)
Peak-to-Peak 75 110 mV
+1u/16V (Ceramic )
Co= 300uF/16V (polymer ) + 10u/16V (Tantalum Capacitor)
RMS 22 32 mV
+1u/16V (Ceramic )
DYNAMIC CHARACTERISTICS
Vin=48V, Load Slew rate 0.1A/s with a 1uF ceramic ,
Output Voltage Current Transient
a 10uF tantalum, and a 300uF polymer capacitor
Positive Step Change in Output Current 50% Io.max to 75% Io.max 350 500 mV
Negative Step Change in Output Current 75% Io.max to 50% Io.max -500 -350 mV
Settling Time (within 1% Vout nominal) 500 s
Turn-On Transient
(Adjustable via PMBus)
Start-Up Time, From On/Off Control From On/off to 90%Vo final value 55 ms
Start-Up Time, From Input From Input to 90%Vo final value 75 ms
Output voltage Rise Time From 10%Vo final value to 90%Vo final value 30 ms
EFFICIENCY
100% Load Vin=48V 95.1 %
60% Load Vin=48V 95.6 %
ISOLATION CHARACTERISTICS
Input to Output 1500 Vdc
Isolation Resistance 10 M
Isolation Capacitance 6800 pF
Datasheet E-mail: dcdc@deltaww.com
DS_Q48SC12025_04062017