BW=DC to 20MHz, 3.3V output types, 0305XMC & 0505XMC
BW=DC to 20MHz, 3.3V output types,0505XMC & 1205XMC
Ripple＆Noise
BW=DC to 20MHz, 0506XMC
BW=DC to 20MHz, 0509XMC& 1209XMC
BW=DC to 20MHz, 0512XMC& 1212XMC
BW=DC to 20MHz, 0515XMC& 1215XMC
Note:1、12V input types have typically 3% less load regulation change.
Temperature Characteristics
Parameter
Specification
Storage
0305, 0309, 0315
Case temperature
rise above ambient
0303, 0312, 0503, 0505, 0509, 0512, 0515
0505, 1205
1209, 1212, 1215
Cooling
Free air convection
Conditions
All output types
Min.
-40
-55
Typ.
Max.
85
125
Units
℃
℃
℃
℃
℃
℃
25
30
43
40
Technical notes
ISOLATION VOLTAGE
‘Hi
Pot Test’
“Flash
Tested’
”Withstand
Voltage“、
、
、
‘Proof
Voltage”
“Dielectric
Withstand Voltage'&'Isolation Test Voltage”are all terms that relate to the same thing, a test voltage, applied for a speciffi
、
ed time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
Professional Power Module NTE-X series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC for 1 second.
A question commonly asked is,
“What
is the continuous voltage that can be applied across the part in normal operation?”
For a part holding no speciffic agency approvals, such as the NTE-X series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or 60VDC. The isolation test voltage
represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part could be expected to function correctly with several hundred volts
offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier must be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a
barrier between these circuits and any user-accessible circuitry according to safety standard requirements.
REPEATED HIGH-VOLTAGE ISOLATION TESTING
It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials, construction and environment.
The NTE-X series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled wire. While parts can be expected to withstand several times the stated
test voltage, the isolation capability does depend on the wire insulation. Any material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high
applied voltages thus implying that the number of tests should be strictly limited. We therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be
reduced by 20% from speciffied test voltage.
This consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further
insulation system of physical spacing or barriers.
The minimum load to meet data sheet speciffication is 10% of the full rated load across the speciffied input voltage range. Lower than 10% minimum loading will result in an
increase in output voltage, which may rise to typically double the speciffied output voltage if the output load falls to less than 5%.
Capacitive loading and start up
Typical start up times for this series, with a typical input voltage rise time of 2.2μs and output capacitance of 10μF, are shown in the table below. The product series will start
into a capacitance of 47μF with an increased start time, however, the maximum recommended output capacitance is 10μF.
Start-up time
μs
NTE0303XMC
NTE0305XMC
NTE0309XMC
NTE0312XMC
NTE0315XMC
NTE0503XMC
NTE0505XMC
NTE0505NXMC
437
1359
3435
6590
7625
533
1368
721
NTE0506XMC
NTE0509XMC
NTE0512XMC
NTE0515XMC
NTE1205XMC
NTE1209XMC
NTE1212XMC
NTE1215XMC
Start-up time
μs
7200
3146
4960
7740
895
2150
3640
7180
Ripple & Noise Characterization Method
Ripple and noise measurements are performed with the following test configuration.
C1
1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter
10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC/DC converter with an ESR of less
C2
than 100mΩ at 100 kHz
C3
R1
R2
T1
RLOAD
100nF multilayer ceramic capacitor, general purpose
450Ω resistor, carbon fi lm,
±1%
tolerance
50Ω BNC termination
3T of the coax cable through a ferrite toroid
Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires
Measured values are multiplied by 10 to obtain the specified values.
By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max.
Component selection
Capacitor: It is required that the ESR (Equivalent Series Resistance) should be as low as possible, ceramic types are recommended.
The voltage rating should be at least twice (except for 15V output), the rated output voltage of the DC/DC converter.
Inductor: The rated current of the inductor should not be less than that of the output of the DC/DC converter. At the rated current, the DC resistance of the inductor should be
such that the voltage drop across the inductor is <2% of the rated voltage of the DC/DC converter. The SRF (Self Resonant Frequency) should be >20MHz.
Inductor
L,μH
NTE0303XMC
NTE0305XMC
NTE0309XMC
NTE0312XMC
NTE0315XMC
NTE0503XMC
NTE0505XMC
NTE0505NXMC
NTE0506XMC
NTE0509XMC
NTE0512XMC
NTE0515XMC
NTE1205XMC
NTE1209XMC
NTE1212XMC
NTE1215XMC
10
47
22
10
47
10
47
47
10
22
47
47
47
22
47
47
SMD
82103C
82473C
82223C
82103C
82473C
82103C
82473C
82473C
82103C
82223C
82473C
82473C
82473C
82223C
82473C
82473C
Through Hole
11R103C
11R103C
11R223C
11R103C
11R473C
11R103C
11R473C
11R473C
11R103C
11R223C
11R473C
11R473C
11R473C
11R223C
11R473C
11R473C
Capacitor
C,μF
4.7
4.7
2.2
1
1
4.7
4.7
4.7
4.7
2.2
1
1
4.7
2.2
1
1
Tolerance Envelopes
The voltage tolerance envelope shows typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to
[align=left][font=微软雅黑, 宋体][size=4][color=#000000][backcolor=white]The hardware single-channel design of a single-chip microcomputer application system includes two parts: one is system expansion, tha...
I believe that many novice engineers will more or less encounter chip damage. If the judgment is not accurate, it will take a lot of time to replace the new IC and the fault is still not solved. Maste...
Hello everyone, which version is better for embedded? I use redhat9.0, but some development tools cannot be compiled. It's a headache! What operating system do you use? Which one is more stable?...
Problem: When compiling routine programs such as the marquee and other routine programs, an error occurs in my own program: test.axf: Error: L6218E: Undefined symbol WFI_SET (referred from sys.o).
The...
How does the 12864 LCD display the temperature unit C? (small circle), I found a 2-byte one in the font library, I want a 1-byte one, how can I do it?...
Origin of the problem: Running in RAM instead of burning into FLASH not only improves debugging speed but also extends the life of the chip. However, according to TI's conventional routines, a lot of ...
Ever since the Tesla fire incident, electric cars, already known for their poor reputation, have been subjected to even more scathing criticism. Despite this, many people are still willing to buy t...[Details]
Limited vocabulary recognition
According to the number of characters, words or short sentences in the vocabulary, it can be roughly divided into: less than 100 is small vocabulary; 100-1000 is...[Details]
The structure of an LCD TV primarily consists of the LCD display module, power module, driver module (primarily including the main driver board and tuner board), and keypad module. LCD display modu...[Details]
Logic analyzers are widely used tools in digital design verification and debugging. They can verify the proper functioning of digital circuits and help users identify and troubleshoot faults. They ...[Details]
On August 18th, Galaxis, a specialist in integrated intelligent intralogistics robotics, officially unveiled its next-generation, ultra-narrow aisle forklift mobile robot, the "VFR Ultra-Narrow Ser...[Details]
Smartphones have become essential digital devices, and the growing number of smartphone-centric applications is enriching people's lives. As users, they desire a better app experience and a wider r...[Details]
Permanent magnets are essential components in a wide range of household and industrial devices. They are particularly crucial in the renewable energy sector, including electric vehicle motors. Curr...[Details]
A half-bridge is an inverter topology for converting DC to AC. A typical half-bridge circuit consists of two controller switches, a three-wire DC power supply, two feedback diodes, and two capacito...[Details]
A tubular motor is an electric motor that is typically used to control the movement of machines and equipment. Tubular motors are generally divided into two categories: linear tubular motors and ro...[Details]
A scale, a large, ground-mounted scale, is typically used to measure the tonnage of truck cargo. It's the primary weighing device used in factories, mines, and businesses for bulk cargo measurement...[Details]
As the range of electric vehicles continues to increase, driving electric vehicles for long-distance travel has become a trend. For high-speed travel, how much impact will high-speed driving of ele...[Details]
On August 18th, China's largest expressway
charging station,
the G25 Changshen Expressway Tonglu Service Area (South Area), officially opened and launched its integrated solar-storage-charg...[Details]
introduction
The widespread use of air conditioner communication circuits began with the rise of household inverter air conditioners. With China's energy conservation and emission reduction in...[Details]
introduction
The OMAP-L138 dual-core processor is a new generation of low-power single-chip systems (SoCs) from TI. It is widely used in communications, industrial, medical diagnostic, and aud...[Details]
The Waveshare ESP32-P4-ETH is a compact ESP32-P4 development board with Ethernet and PoE support. It looks very similar to the Olimex ESP32-P4-DevKit, minus the pUEXT connector. However, we've also...[Details]
Microcontroller MCU
京公网安备 11010802033920号
EEWORLD
