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HEHB40A-48V-5V-PL [BEL]

1-OUTPUT DC-DC REG PWR SUPPLY MODULE;
HEHB40A-48V-5V-PL
型号： HEHB40A-48V-5V-PL
厂家： BEL FUSE INC.    BEL FUSE INC.
描述：

1-OUTPUT DC-DC REG PWR SUPPLY MODULE

输出元件
文件： 总10页 (文件大小：304K)
中文：  中文翻译
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Release 0.A  
P/N 7V7820WC000  
HEHB 40A-48V-5V  
48Vin 40Aout 5Vout High Efficiency, Isolated Half  
Brick DC-DC Converter  
Features  
·
Very high efficiency: 92%@20A, 91%@40A  
(48Vin, 25°C, 300LFM)  
·
·
Wide input voltage range (36 to 75Vdc)  
Total weight: 63g. (2.22oz.) Open-Frame Version;  
Max 85g. (2.99oz.) Metal-Plate Version  
Low profile, industry standard footprint and pinout:  
2.3" x 2.4" x 0.4" (58.4mm x 61.0mm x 10.2mm)  
Adjustable output voltage (+10% / -20% )  
Input to Output Isolation at 2000Vdc, 10MW  
Fixed Frequency (300 KHz)  
Undervoltage Lockout (UVLO)  
Overcurrent protection  
Overtemperature protection  
Auto-restart after overcurrent shutdown  
Remote sense  
Remote ON/OFF  
Operating temperature -40/+100°C  
ISO 9001 Certified manufacturing processes  
CSA/US, CSA, Kema Certified  
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Product Highlights  
·
The HEHB DC-DC Converter family is  
Magnetek’s solution for next generation,  
cutting-edge board applications.  
The synchronous rectification topology uses  
MOSFET instead of Schottky diodes  
providing extreme reduction in heat  
generation, boosting efficiency, eliminating  
the need for a heat sink and increasing  
reliability.  
·
·
·
The low profile (0.4”), open frame  
construction allows smaller card pitch and  
improves ventilation.  
The fixed switching frequency provides  
predictable EMI characteristics.  
P/N 7V7820WC000  
HEHB 40A 48V 5V DS 7V78 – page 1 -  
HEHB40A - 48V – 5V High Efficiency DC-DC Converter  
Mechanical Drawings  
- All dimensions are in inches (mm)  
- Tolerances: x.xx in. +/-0.2 in. (0.5mm)  
- Pins 1-4, 6-8 are 0.040" (1.02mm) dia. with 0.080" (2.03mm) dia. standoff shoulders  
OPEN-FRAME VERSION  
METAL-PLATE VERSION  
PINOUT Description  
Pin Name  
Vin (-)  
Function  
Return terminal for the -48V input bus  
1
2
3
Not Present  
ON/OFF  
Logic signal referenced to Vin (-), TTL compatible  
(internal pull up ) to turn converter on and off  
Positive terminal for the +48V input bus  
Positive terminal for output voltage  
Positive remote sense  
Output voltage TRIM  
Negative remote sense  
Return terminal for output voltage  
4
5
6
7
8
9
Vin (+)  
Vout (+)  
Sense (+)  
TRIM  
Sense (-)  
Vout (-)  
P/N 7V7820WC000  
HEHB 40A 48V 5V DS 7V78 – page 2-  
HEHB40A - 48V – 5V High Efficiency DC-DC Converter  
Specifications  
(Typical values are at nominal input line, full load, airflow 300 LFM, 25°C ambient temperature unless otherwise specified)  
Input  
characteristics  
Notes &  
Conditions  
Min  
Typ  
Max  
Units  
Operating Input Voltage Range  
Input Surge Voltage  
Note 1  
T< 10ms  
36  
48  
75  
100  
V
V
Input Under-Voltage Lockout  
Turn-On Voltage Threshold  
Turn-Off Voltage Threshold  
Lockout Hysteresis Voltage  
35.0  
31.7  
3.3  
35.2  
31.9  
3.3  
35.4  
32.1  
3.3  
V
V
V
VIN=36V; Full Load at  
nominal output  
voltage  
Maximum Input Current (I  
)
6.2  
A
INmax  
No-load Input Current  
Off Converter Input Current  
70  
8
100  
10  
mA  
mA  
A2s  
mA  
Inrush Current Transient Rating  
Input Reflected-Ripple Current  
0.03  
10  
RMS; see figures 6,7  
15  
Output  
characteristics  
Notes &  
Conditions  
50 % Load  
Min  
Typ  
Max  
5.02  
Units  
Output Voltage Set Point  
Output Voltage Regulation  
Over Load  
4.98  
5.00  
V
± 6  
± 6  
± 25  
± 10  
± 10  
± 40  
5.05  
mV  
mV  
mV  
V
Over Line  
Over Temperature  
Total Output Voltage Range  
Output Voltage Ripple and Noise  
Peak to Peak  
4.95  
20 MHz bandwidth  
Full load, 2x10mF  
ceramic; see fig. 6, 8  
80  
18  
-
mV  
mV  
A
RMS  
Operating Output Current Range  
0
40  
48  
Output Voltage  
10% low  
Output DC Current Limit Inception  
42  
45  
A
Output DC Current Limit Shutdown  
Voltage  
See figure 5  
2.3  
V
Admissible Output Capacitance  
Full load, resistive  
0
40000  
mF  
Dynamic  
Notes &  
Min  
Typ  
Max  
Units  
characteristics  
Conditions  
470mF load cap.  
1A/ms; see figure 3  
Output Voltage Current Transient  
Positive Step Change in IOUT  
Negative Step Change in IOUT  
Settling Time to 1%  
50% to 75% load  
75% to 50% load  
150  
150  
100  
mV  
mV  
ms  
Turn On Transient  
See figures 1, 2  
Full load  
Turn On Time  
4
0
ms  
%
10mF load  
capacitance, Iout=  
0A  
Output Voltage Overshoot  
Efficiency  
Notes & Conditions  
Vin=50V  
Min  
90.5  
91.5  
91.5  
Typ  
91  
Max  
Units  
%
Load 100%  
Load 75%  
Load 50%  
Vin=50V  
Vin=50V  
92  
92  
%
%
NOTE 1: Absolute max. input voltage 80V  
P/N 7V7820WC000  
HEHB 40A 48V 5V DS 7V78 – page 3-  
HEHB40A - 48V – 5V High Efficiency DC-DC Converter  
Isolation  
characteristics  
Notes & Conditions  
Basic isolation  
Min  
2000  
2000  
Typ  
Max  
Units  
VDC  
Isolation Voltage input to output  
Isolation Voltage Input to plate  
Basic isolation  
VDC  
Isolation Capacitance  
Isolation Resistance  
3300  
pF  
MW  
10  
General  
characteristics  
Max  
Notes & Conditions  
Min  
Typ  
Units  
Operating Range Temperature  
Storage Temperature  
Relative Humidity  
Maximum Rating  
Maximum Rating  
Non condensing  
-40  
-50  
5
+100  
+120  
95  
°C  
°C  
%
Bellcore Issue 4  
RDF93 HRD Issue 5  
Calculated MTBF  
Approvals  
1,965,099 hours  
EN60955; UL1950; CSA22.2; CE  
Feature characteristics  
Min.  
Typ.  
Max  
Units  
Switching frequency  
ON/OFF Control  
300  
kHz  
Off-State Voltage  
On-State Voltage  
2.7  
0
15  
0.8  
V
V
Output Voltage Trim Range  
Output Over-Voltage Protection  
Over-Temperature shutdown  
-20  
+10  
130  
%
%
°C  
PCB Hot spot  
125  
P/N 7V7820WC000  
HEHB 40A 48V 5V DS 7V78 – page 4-  
HEHB40A - 48V – 5V High Efficiency DC-DC Converter  
Performance Curves  
Figure 1. Turn-on transient at full rated current (resistive load)  
Top Trace: Vout; 2V/div (Vin=50V)  
Bottom Trace: ON/OFF; 5V/div  
Figure 2. Turn-on transient at zero load.  
Top Trace: Vout; 2V/div (Vin=50V)  
Bottom Trace: ON/OFF; 5V/div  
Figure 4. Output Voltage response (50mV/div ) to a step- change in load  
current (50% - 75% - 50% of Imax:dI/dt=0.1A/ms).  
Load capacitance: 470mF, 100mOhm ESR tantalum capacitor .  
Figure 3. Output Voltage response (200mV/div ) to a step-  
change in load current (50% - 75% - 50% of Imax:dI/dt=1A/ms.  
Load capacitance: 470mF, 30mOhm ESR tantalum capacitor .  
P/N 7V7820WC000  
HEHB 40A 48V 5V DS 7V78 – page 5-  
HEHB40A - 48V – 5V High Efficiency DC-DC Converter  
Figure 7  
Figure 8  
Source  
impedance  
DC/DC  
Converter  
Vout  
-
Is  
-
Ic  
Cerami c  
cap  
Cerami c  
cap  
ESR  
Figure 5. Load current (0.5A/div) vs time when converter  
Figure 6. Test set-up diagram showing measurement point  
attemps to turn on into 10mOhm short circuit.  
for Input Reflected Ripple Current and Output Voltage  
Figure 7. Input reflected ripple current at nominal input  
voltage and rated load current (see Fig.6)  
Figure 8. Output voltage ripple at nominal input voltage and  
rated load current. Load cap: 20mF ceramic capacitor  
** see note below (see Fig.6)  
**Output ripple measure: care must be taken to insert the output capacitors in the output current paths.  
The measurements is taken with the following output capacitors:  
-2x AVX PN CM316X5R106K006AT  
-2x Murata PN GRM31CR60J106KC01L  
-2x Taiyo Yuden PN JMK316B106KL  
P/N 7V7820WC000  
HEHB 40A 48V 5V DS 7V78 – page 6-  
HEHB40A - 48V – 5V High Efficiency DC-DC Converter  
9 7  
9 4  
9 1  
8 8  
8 5  
36  
48  
75  
8 2  
7 9  
7 6  
7 3  
7 0  
Figure 9. Efficiency vs. load current for  
minimum, nominal and maximum input  
voltage.  
0
8
1 6  
2 4  
3 2  
4 0  
output current [A]  
2 0  
1 8  
1 6  
1 4  
1 2  
1 0  
8
3 6  
4 8  
7 5  
Figure 10 .Power dissipation vs. load current  
for minimum, nominal and maximum input  
voltage.  
6
4
2
0
0
8
1
6
2
4
3 2  
4 0  
o
u t p u t c u r r e n t [ A ]  
P/N 7V7820WC000  
HEHB 40A 48V 5V DS 7V78 – page 7-  
HEHB40A - 48V – 5V High Efficiency DC-DC Converter  
To be provided in the next issue  
To be provided in the next issue  
Figure 11: Maximum output power derating curves vs.  
ambient air temperature for airflow rates of 0 LFM  
through 400 LFM with air flowing from input to output  
and nominal input voltage.  
Figure 12: Thermal plot of converter at 30 amp load  
current with 40°C air flowing at the rate of 300 LFM.  
Converter in vertical position with air flowing from input  
to output.  
To be provided in the next issue  
To be provided in the next issue  
Figure 13: Maximum output power derating curves vs.  
ambient air temperature for airflow rates of0 LFM  
through 400 LFM with air flowing from output to input  
and nominal input voltage.  
Figure 14: Thermal plot of converter at 30 amp load  
current with 40°C air flowing at the rate of 300 LFM.  
Converter in vertical position with air flowing from  
output to input.  
P/N 7V7820WC000  
HEHB 40A 48V 5V DS 7V78 – page 8-  
HEHB40A - 48V – 5V High Efficiency DC-DC Converter  
Features and Pins description  
SAFETY  
The converter is certified according to EN60950 (Kema), UL 1950 and CSA 22.2.  
The converter has basic insulation rating. The converter meets NEBS compatibility.  
An external input fuse must always be used.  
ON-OFF CONTROL  
The default logic is negative: the on/off (pin #2) voltage is referenced to the -Vin (pin #4) and must be lower than 0. 8V to  
turn the module on, and higher than 2.7V to shut the module off.  
Consult the factory for availability of positive logic modules.  
TRIMMING  
The output voltage can be trimmed by means of an external resistor connected between the Trim and the  
+S or -S pins. The selection of the resistor follows the industry standard.  
A resistor connected between Trim 8and - S pins will decrease the output voltage. For a decrease of D% of the nominal  
output voltage, the value of the resistor should be:  
æ
-
ö
100%  
çVnominal Vtarget  
æ
ö
÷
R
trim-down  
=
´ 100%  
- 2kW, where D =  
÷
ç
ç
÷
D
è
ø
Vnominal  
è
ø
TRIM DOWN  
1000  
100  
10  
1
0
2
4
6
8
10  
12  
14  
16  
18  
20  
% Decrease in Output Voltage  
Figure A  
A resistor connected between Trim and + S pins will increase the output voltage. For a desired increase of D% of the  
nominal output voltage, the value of the resistor should be:  
æ
ö
çVnom  
÷
- 2 ·  
+
V V nom  
tar  
èç Vref  
÷
ø
R
trim-up  
=
kO , where Vnom = Nominal Voltage, V = Target Voltage, V =1.225 V  
tar  
ref  
-
Vtar Vnom  
P/N 7V7820WC000  
HEHB 40A 48V 5V DS 7V78 – page 9-  
HEHB40A - 48V – 5V High Efficiency DC-DC Converter  
TRIM UP  
1000  
100  
10  
0
1
2
3
4
5
6
7
8
9
10  
Figure B  
% Increase in Output Voltage  
SENSE (+ or -)  
The + or – S pins should be connected to the load to have a tight regulation.  
The maximum voltage drop that can be compensated for is 10% of Vout.  
Note that the overvoltage protection senses the output voltage directly at + Vout and – Vout pins.  
Care must be taken to avoid that the voltage at the output terminals + Vout and –Vout pins exceeds 5.5.  
THERMAL CONSIDERATIONS  
The module is provided with thermal protection that prevents the hot spot on the PCB from exceeding 125°C.  
Depending on the air flow rate and the ambient temperature the maximum current reachable when the thermal protection  
kicks in is shown in Figure 11-12-13-14.  
OVERCURRENT PROTECTION  
The overcurrent limit inception is typically at 110% of the rated output current. When this limit is exceeded the output  
voltage decreases.  
A further current increase will trigger the hiccup protection.  
The behavior of the converter when the output is short circuited is shown in Figure 5.  
Ordering code  
OPEN-FRAME Version: HEHB40A-48V-5V  
METAL -PLATE Version: HEHB40A-48V-5V-PL  
US  
Europe  
Magnetek S. p. A  
Magnetek Inc.  
8966 Mason Avenue  
Via S.Giorgio 642  
Chatsworth, CA 91311, USA  
52028- Terranuova Bracciolini, Arezzo, Italy  
Phone: (+1) 818.727.2216  
Phone: (+39) 055.9195.1  
Fax:  
(+1) 818.727.2276  
Fax: (+39) 055.9195.248  
http:// www.magnetek.it  
Toll-Free Number: (+1) 800.621.0733  
http: // www.magneteK.com  
P/N 7V7820WC000  
HEHB 40A 48V 5V DS 7V78 – page 10-  

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