1. Converter will undergo input over-voltage shutdown.
2. Derate output power to 50% of rated power at Tcase = 135ºC. 135ºC is above the specified operating range. See Figure 5.
3. High or low state of input voltage must persist for about 200µs to be acted on by the shutdown circuitry.
4. Current limit inception is defined as the point where the output voltage has dropped to 90% of its nominal value. See Current Limit discussion in
Features Description section.
5. Parameter not tested but guaranteed to the limit specified.
6. Load current transition time ≥ 10µs.
7. Line voltage transition time ≥ 100µs.
8. Input voltage rise time ≤ 250µs.
9. Operating the converter at a synchronization frequency above the free running frequency will cause the converter’s efficiency to be slightly reduced
and it may also cause a slight reduction in the maximum output current/power available. For more information consult the factory.
10. After a disable or fault event, module is inhibited from restarting for 100ms. See Shut Down section of the Control Features description.
11. Only the ES and HB grade products are tested at three temperatures. The C grade products are tested at one temperature. Please refer to the
Construction and Environmental Stress Screening Options table for details.
12. These derating curves apply for the ES and HB grade products. The C grade product has a maximum case temperature of 70ºC.
13. The specified operating case temperature for ES grade products is -45ºC to 100ºC. The specified operating case temperature for C grade products
is 0ºC to 70ºC.
Product# MQHL-28-15S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005372 Rev. B
08/14/13
Page 4
MQHL-28-15S
Output:
15V
Current:
3.3A
Technical Figures
100
95
90
100
95
90
Efficiency (%)
Efficiency (%)
85
80
75
70
65
60
0.00
16 Vin
28 Vin
40 Vin
85
80
75
70
65
60
-55ºC
16 Vin
28 Vin
40 Vin
0.66
1.32
1.98
2.64
3.30
25ºC
125ºC
Load Current (A)
Case Temperature (ºC)
Figure 1:
Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at Tcase=25°C.
12
10
Figure 2:
Efficiency at nominal output voltage and 60% rated power vs.
case temperature for input voltage of 16V, 28V, and 40V.
12
10
Power Dissipation (W)
8
6
4
2
0
0.00
16 Vin
28 Vin
40 Vin
Power Dissipation (W)
8
6
4
2
0
-55ºC
16 Vin
28 Vin
40 Vin
0.66
1.32
1.98
2.64
3.30
25ºC
125ºC
Load Current (A)
Case Temperature (ºC)
Figure 3:
Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at Tcase=25°C.
4.0
3.3
2.6
59
50
40
Figure 4:
Power dissipation at nominal output voltage and 60% rated
power vs. case temperature for input voltage of 16V, 28V, and 40V.
18
16
14
Output Voltage (V)
12
10
8
6
4
2
Iout (A)
2.0
30
1.3
Tjmax = 105º C
0.7
0.0
25
45
65
85
105
125
Tjmax = 125º C
Tjmax = 145º C
20
10
0
145
Pout (W)
0
0
1
Case Temperature (ºC)
Load Current (A)
2
3
4
5
Figure 5:
Output Current / Output Power derating curve as a
function of Tcase and the Maximum desired power MOSFET junction
temperature at Vin = 28V (see Note 12).
Product# MQHL-28-15S
Phone 1-888-567-9596
Figure 6:
Output voltage vs. load current showing typical current limit
1. Set the pin multiplexing register PINMUX8 and select the function of pin 3 as timer output. Note that this pin coincides with the SCL of I2C0.
(User Manual P203)
2. Set up the timer setup_TIMER0();...
I have been working in asp.net for several years and have joined many technical exchange groups. In these groups, I see that the group leaders are always so enthusiastic in answering questions, but ma...
The circuit diagram and program are as follows; the original intention is to control the digital tube to display 0-a incrementally, and the timer controls the flashing of the LED. When the button is p...
1-2-3. Calculation of the energy storage filter inductor of the series switching power supply From the above analysis, it can be seen that the output voltage Uo of the series switching power supply is...
When using the max038 function signal generation chip, a set of capacitor networks is required to select this capacitor. There are three capacitors: 103, 102, and 101. Now I want to control the relay ...
0 Introduction
With the development of my country's economy, the number of motor vehicles continues to increase. The growth of existing roads and other hardware facilities can no longer meet t...[Details]
1. Introduction
Since the 1980s, with the continuous development of automotive electronic technology, there are more and more electronic control units in automobiles, such as electronic fuel i...[Details]
This paper designs a dot matrix LED text display screen that is easy to update, expandable, and low-cost. The way to reduce costs is
① Use the Bluetooth data transmission function of mobile ph...[Details]
The data collector of the automatic weather station is generally designed based on a single-chip microcomputer or a PC/104 bus controller. It has the characteristics of good compatibility with PC, low...[Details]
1. With the development of modern industry and the continuous improvement of automation, some medium and large control systems have been greatly facilitated, which not only makes control easier, bu...[Details]
PV inverter manufacturer SMA has launched its first DC arc fault circuit interrupter (AFCI) PV inverter and has received UL certification.
The new SunnyBoy AFCI inverter models include 3000-US...[Details]
The potentiometer is an adjustable electronic component. The main functions of the potentiometer in the circuit are as follows:
1. Used as a voltage divider
A potentiometer is a continuou...[Details]
Continuity test
A variety of devices need to be checked for continuity, including cable assemblies, printed circuit boards, and connectors to ensure that these components have the expected contin...[Details]
Spatial Division Multiplexing (SDM) MIMO processing can significantly improve spectrum efficiency and thus greatly increase the capacity of wireless communication systems. Spatial Division Multip...[Details]
LED light sources have many environmental advantages, but early products still have certain technical bottlenecks in heat dissipation and high brightness design that cannot be broken through....[Details]
Only a small number of LED manufacturers can produce high-quality LEDs. For applications that are only used for simple indication, low-quality LEDs are sufficient. However, high-quality LEDs must...[Details]
1. Introduction
With the increasing popularity of fully automatic washing machines, consumers have higher and higher requirements for their environmenta...[Details]
Key Points
1. Now, in addition to high-end smartphones and tablets, users also expect to use touch screens in other applications, and they are gradually appearing in cars and instruments.
...[Details]
The above is to use MB1404 as a stereo composite signal transmitter. You can use the internal high-frequency amplifier and oscillator or not! According to my experience, I still recommend beginners...[Details]
0 Introduction
There are many types of sensors, and the working principles, measurement targets and measurement environments of different types of sensors vary greatly. The corresponding detection s...[Details]
DSP and ARM Processors
京公网安备 11010802033920号
EEWORLD
