QSB Series 400W Datasheet by XP Power

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This specification describes the features and functions of QSB400 series of isolated
DC-DC Converters. These are highly efficient, reliable and compact, high power
density, single output baseplate cooled DC/DC converters packaged in an industry
standard full brick format.
Dimensions:
QSB400:
4.6 x 2.4 x 0.5”(116.8 x 61.0 x 12.7 mm)
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1
Models & Ratings
Notes
1. Add suffix ‘P’ to the model number to receive the unit with positive logic. Module on: <1 mA or open circuit, module off: 1-10 mA
2. Minimum of 330 µF capacitance required on output to mantain regulation. Except S05 models which require 680 µF
QSB400 DC-DC Power Supplies
Up to 89% efficiency
4:1 input range
Industry standard full brick package
-40 °C to +100 °C operating temperature
Baseplate-cooled
1500VDC isolation
Remote on/off & remote sense
3 year warranty
400 Watts
Input Voltage Output Voltage(2Output Current Input Current Efficiency Max Capacitive Load Model Number(1)
No Load Full Load
9-36 V
5.0 V 80.0 A 600 mA 19.05 A 87.5% 10000 µF QSB40024S05
12.0 V 33.3 A 120 mA 19.36 A 86.0% 10000 µF QSB40024S12
24.0 V 16.6 A 120 mA 19.19 A 87.0% 4700 µF QSB40024S24
28.0 V 14.3 A 120 mA 19.19 A 87.0% 4700 µF QSB40024S28
48.0 V 8.30 A 120 mA 19.19 A 86.5% 2200 µF QSB40024S48
18-75 V
5.0 V 80.0 A 300 mA 9.36 A 89.0% 10000 µF QSB40048S05
12.0 V 33.3 A 60 mA 9.41 A 88.5% 10000 µF QSB40048S12
24.0 V 16.6 A 60 mA 9.28 A 90.0% 4700 µF QSB40048S24
28.0 V 14.3 A 60 mA 9.27 A 90.0% 4700 µF QSB40048S28
48.0 V 8.30 60 mA 9.27 A 89.5% 2200 µF QSB40048S48
Mechanical Details
BOTTOM VIEW
4.10 (104.1)
0.15 (3.81)
3.35 (85.1)
1.70
(43.2)
1.30
(33.0)
1.40
(35.6)
0.50 (12.7)
0.20 (5.1)
0.22
(5.5)
0.50
(12.7)
0.90 (22.9)
0.40 (10.2)
2.00
(50.8)
2.25
(57.2)
2.40
(61.0)
1
16 15 14 13 12 11
2
3
4
0.90 (22.9)
0.75 (19.1)
0.20 (5.1) 4.20 (106.7)
4.60 (116.8)
8-Ø 0.04
(1.0)
8-Ø 0.08
(2.0)
4 x Mounting Holes, 3.5 mm
PIN CONNECTIONS
Pin Function
1 -Vin
2 +Vin
3 -On/Off
4 +On/Off
5-7 +Vout
8-10 -Vout
11 -Sense
12 +Sense
13 Trim
14 Parallel
15 DC OK
16 Aux
1. All dimensions are in inches (mm)
2. Weight: 0.485 lbs (220 g) approx
3. Tolerances: X.XX = ±0.02 (X.X = ±0.5)
X.XXX = ±0.01 (X.XX = ±0.25)
4. Small or large pin diameter: ±0.004 (±0.1)
5. Small pin pitch 0.15 (3.81)
Notes
I 1 J XP Power Isolallun Reswslance Isolallun Capacitance Switching Frequency Mlnlmum Operating Base PlaleTemperaturE -40 Storage Temperature -55 Humwdlty Cooling Mme: & mans Non-condensmg Easeplate-cuu‘ed
Input
Output
QSB400
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DC-DC Power Supplies
Characteristic Minimum Typical Maximum Units Notes & Conditions
Input Voltage 9/18 36/75 VDC 24 V/48 V
Input Current See Models and Ratings table
Idle Current 50 mA When inhibited
Input Reverse Voltage Protection None
Input Filter Pi Network
Undervoltage Lockout Turn On: 8.5
Turn On: 17.0
Turn Off: 7.5
Turn Off: 15.5 V24 Vin
48 Vin
Overvoltage Lockout Turn On: 40.0
Turn On: 80.0
Turn Off: 42.0
Turn Off: 83.0 V24 Vin
48 Vin
Characteristic Minimum Typical Maximum Units Notes & Conditions
Output Voltage Trim -20 +10 % Of nominal output, see Application Notes
Initial Set Accuracy ±1.5 %
Minimum Load No minimum load
Start Up Time 120 ms
Line Regulation ±0.2 % Measured from high line to low line
Load Regulation ±0.5 % Measured from 0-100% load
T
ransient Response ±5 % Deviation, recovery to within 1% in 500 µs,
25% step load change
Ripple & Noise 100
1
mV pk-pk
% pk-pk
5 V models.
Other models 1% pk-pk, 20 MHz bandwith (see note 1)
Overvoltage Protection 115 140 %
Overload Protection 110 150 % Nominal output
Short Circuit Protection Continuous, constant current
Thermal Shutdown Case temperature 110 °C typical
Temperature Coefficient ±0.03 %/°C
Notes
1. Output Ripple and Noise measured with 10 µF tantalum and 1 µF ceramic capacitor across output.
Environmental
Characteristic Minimum Typical Maximum Units Notes & Conditions
Operating Base Plate Temperature -40 +100 °C
Storage Temperature -55 +105 °C
Shock 75 g/pk Sawtooth wave for 10ms, 3 pulses per face, all 6 faces
tested on all 3 axes
Humidity 90 %RH Non-condensing
Cooling Baseplate-cooled
General
Characteristic Minimum Typical Maximum Units Notes & Conditions
Efficiency 86 90 % See Models and Ratings table
Isolation: Input to Output
Input to Case
Output to Case
1500 VDC
1500 VDC
1500 VDC
Isolation Resistance 10
Isolation Capacitance 4000 pF
Switching Frequency 230 kHz
Case Material Plastic (DAP) UL94V-0 with aluminium base plate
Potting Material Epoxy UL94V-0
Pin Material Copper with nickel and matte tin plating
Solder Profile Peak temperature 260 °C, above 250 °C for 3-6 s. With iron 450°C for < 5s
Power Density 79 W/in3
Mean Time Between Failure 340 kHrs MIL-HDBK-217F at 25 °C GB
Weight 0.485 (220) lb (g)
XP Power |'-‘| Ii Russ m+33 RIXSS m+33 Vou! Vf 13.2 0.525 19.2 0.525
QSB400
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DC-DC Power Supplies
3
Notes
1. Open collector signal is pulled low when DC is OK, floating when DC is NOT OK with regards to Sense pin. Maximum current is 20 mA
EMC: Emissions
Phenomenon Standard Test Level Notes & Conditions
Conducted EN55022, level A conducted, with external components. See application notes.
Input Fusing and Safety Considerations
The QSB400 series converters have no internal fuse. In order to achieve
maximum safety and system protection, always use an input line fuse. We
recommended a 60A time delay fuse for 24Vin models, and 30A for 48Vin
models. It is recommended that the circuit have a transient voltage
suppressor diode TVS (24 Vin SMCJ40A: 48 Vin, SMCJ78A) across the
input terminal to protect the unit against surge or spike voltage and input
reverse voltage (as shown).
-Vout
+Vout
-Vin
+Vin
TVS
Vin
+
-
Load
+
Application Notes
The Trim input permits the user to adjust the output voltage up or
down according to the trim range specification (80% to 110% of
nominal output). This is accomplished by connecting an external
resistor between the +Vout and +Sense pin for trim up and between
the TRIM and -Sense pin for trim down, see figure:
Note: Both Rv and Rt must be fitted.
C1 = 1000 µF / 50 V for Vin = 24 V, 330 µF / 100 V for Vin = 48 V
For C2 see note 2 or max capacitive load in Models and Ratings table.
Low ESR electrolytic capacitors are recommended.
Output Voltage Adjustment
Load
+Vin
+ON/OFF
-ON/OFF
-Vin
+S
+V
-V
-S
TRIM
C2
Rv
Rt
C1
DC
R1
T
E
The Trim pin should be left open if trimming is not being used. The
output voltage can be determined by the following equations:
Rt x 33
Rt + 33
1.24 x
Vf =
Rt x 33
Rt + 33
7.68 +
E
E
( Vnom + Rv ) x Vf
Vout =
Rv = Vout
Vf - Vnom
Recommended Value of Rt is 6.8kΩ, therefore Vf = 0.525
Examples:
E
- 12 = 13.145k
Ω
Rv = 13.2
0.525
2. To trim 24 V unit down by 20%
1. To trim 12 V unit up by 10%
E
- 24 = 12.57k
Ω
Rv = 19.2
0.525
Safety Approvals
Agency Standard Notes & Conditions
UL cUL60950-1 ITE
Signals and Controls
Phenomenon Standard Test Level Notes & Conditions
Remote On/Off Reference to -ve input, Module on: 1-10 mA, Module off: <1 mA or open circuit
Remote Sense Compensates up to 10% of Vout nominal, total of output trim and remote sense
DC OK DC OK open collector signal (see note 1)
Current Share Parallel up to 4 modules using the parallel pin ±10% load share accuracy from 50% to 100% load.
Auxilliary Output 10 V ±3 V/20 mA max, auxilliary return is -Sense pin
95% w. 35% 3‘ m. g 75% m. 55% sass 10% 20% 30% ms 50% um me sax my. 1007. m4 I 1 1 XP Power 95% say. 55% 5 15% was 35% 60% 10-1. 20% 30% ms 50% was 70% use 90-1. way. 1m 1
QSB400 DC-DC Power Supplies
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DC OK Signal
Normal and abnormal operation of the converter can be monitored by using the DC OK
signal. The signal is located at the secondary side and is an open collector referenced to
the -Sense pin. The internal aux power supply or an external DC supply can be used as
a pull up voltage. Max current is 20 mA.
This signal is LOW when the converter is operating normally and HIGH when the
converter is disabled or when the converter is operating abnormally.
Efficiency vs Load
QSB40024S28 QSB40048S28
Parallel Operation
The QSB400 series are designed for parallel operation. When paralleled, the load current can be equally shared between the modules by connecting
the Parallel pins together. The 5V output models cannot be paralleled.
There are two different parallel operations for QSB400 series, one is parallel operation when load can’t be supplied by only one power unit; the other
is for N+1 redundant operation.
+S
+V
-V
-S
PARALLEL
+S
+V
-V
-S
O
A
D
L
PARALLEL
T
E
TRIM O
A
D
L
+S
+V
-V
-S
PARALLEL
P
TRIM
+S
+V
-V
-S
PARALLEL
(
E
+S
+V
-V
-S
PARALLEL
O
A
D
L
E
+S
+V
-V
-S
PARALLEL
O
A
D
L
TRIM
+S
+V
-V
-S
PARALLE L
TRIM
+S
+V
-V
-S
PARALLE L
(
E
N+1 redundant connectionParallel Operation
N+1 redundant connection adjustable output voltage
Parallel Operation with adjustable output
|'-‘| Ii XP Power ' J 0 _/._ T :- _/ T %F >1
QSB400
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DC-DC Power Supplies
23 July 195
Suggested Circuits for Conducted EMI Class A
EMC Considerations
+Vin
-Vin
C1
L1 L2
-
+
R1
+VO
-VO
DC/DC Converter
ON/
O
F
F
C5
C2 C3
C6
C4
+Vin +Vout
-Vin -Vout
C7
Model No. C1 C2 C3 C4 C5 C6 C7 L1 L2 R1
QSB40024Sxx NC 470µF/50V
1000µF/50V
2200pF/2kV NC NC NC
Short 200µH
RM8 SM100 9.1K
QSB40048Sxx
330µF/100V 330µF/100V 330µF/100V
NC NC NC NC
1µH
SPI-13050-1R0
1.5mH
CM20*12*10 9.1K
470uF/50V, 1000uF/50V NIPPON CHEMI-CON KY series aluminum capacitors, 330uF/100V NIPPON
CHEMI-CON KMF series aluminum capacitors and C4 ceramic capacitors.
Notes
Remote ON/OFF Control
The converters output ON/OFF function can be controlled from the input side or the output side.
Output voltage turns on when current flows through the ON/OFF pins by closing the switch. The maximum current through the ON/OFF pin is 10mA,
and is determined by current limit resistor R.
E
+Vi
-Vi 1kΩ
+ON/OFF
-ON/OFF
I(ON/OFF)
SW
R
+Vin
-Vin
+
Input
E
I(ON/OFF) -ON/OFF
+ON/OFF
1kΩ
AUX
-S
R
Output
SW
Turning output ON and OFF from the input side, recommended R value
is 12K (1.0 W) for 48Vin and 6K (0.5W) for 24Vin.
Turning output ON and OFF from the output side, recommended R value
is 4.3k (0.1W).

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