Q48SD Datasheet, PDF (3/24 Pages) Delta Electronics, Inc. – Industry standard, DOSA compliant pin out

TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
NOTES and CONDITIONS
PMBus Monitoring CHARACTERISTICS
Output Current Reading Accuracy
Output Voltage Reading Accuracy
Input Voltage Reading Accuracy
Temperature Reading Accuracy
GENERAL SPECIFICATIONS
MTBF
Weight
Weight
Over-Temperature Shutdown ( Without heat spreader)
Over-Temperature Shutdown (With heat spreader)
Io=50% ~ 100% of Io, max;
Io=5% ~ 50% of Io, max;
Io=100% of Io, max; 300LFM; Ta=25 C
Without heat spreader
With heat spreader
Refer to Figure 22 for Hot spot 1 location (48Vin,80%
Io, 200LFM,Airflow from Vin+ to Vin-)
Refer to Figure 24 for Hot spot 2 location (48Vin,80%
Io, 200LFM,Airflow from Vin+ to Vin-)
Over-Temperature Shutdown ( NTC resistor )
Refer to Figure 22 for NTC resistor location
Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spots’ temperature is just for reference.
Q48SD12025 (Standard)
Min.
Typ.
Max.
Units
-5
+5
%
-2
+2
A
-2
+2
%
-4
+4
%
-5
+5
TBD
52.5
66.5
128
M hours
grams
grams
°C
120
°C
125
°C
PIN DEFINATION
Pin#
Name
Function
Pin# Name
Function
1 Vin(+)
7 C2
Secondary on/off control pin; The default configuration is set to ignore this
input. And such pin can be reconfigured by the PMBus Interface.
2 ON/OFF
Primary on/off control pin
8 Sig_Gnd Signal ground
3 Vin(-)
9 Data
PMBus data line
4 Vo(-)
10 SMBAlert PMBus SMBAlert line
Trim
Trim pin or current sharing pin,
5
/Current sharing which is option.
11 Clock
PMBus clock line
6 Vo(+)
12 Addr1 ADDR1 pin sets the high order digit of the address.
13 Addr0 ADDR0 pin sets the low order digit of the address.
SIMPLIFIED APPLICATION CIRCUIT
Input
Source
Fuse
Reverse
polarity
Protection
EMI filter
On/off control
Delta DC/DC
Module
Vin(+)
Addr0 Addr1
Vout(+)
On/off
Trim/
Current sharing
Vin(-)
Vout(-)
SMB
CLOCK DATA -ALERT C2
Load
CLK DATA ALERT CTRL
System MCU
3
DS_Q48SD12025_05032012