• RoHS lead free solder and lead solder exempted products
are available
• Delivers up to 10 A (36.3 W)
• No derating up to 85 C
• Industry-standard footprint and pinout
• Single-in-Line Package (SIP): 2.0” x 0.575” x 0.315”
(50.8 x 14.59 x 8.00 mm)
• Weight: 0.26 oz [7.28 g]
• Synchronous Buck Converter topology
• Start-up into pre-biased output
• No minimum load required
• Programmable output voltage via external resistor
• Operating ambient temperature: -40 °C to 85 °C
• Remote output sense
• Remote ON/OFF (positive or negative)
• Fixed-frequency operation
• Auto-reset output overcurrent protection
• Auto-reset overtemperature protection
• High reliability, MTBF = TBD million hours
• All materials meet UL94, V-0 flammability rating
• Safety approved to UL/CSA 62368-1 and
EN/IEC 62368-1
Bel Power Solutions point-of-load converters are
recommended for use with regulated bus converters in an
Intermediate Bus Architecture (IBA). The YNV05T10 nonisolated DC-DC converter delivers up to 10 A of output
current in an industry-standard through-hole Single In-Line
Package (SIP). Operating from a 3.0 – 5.5 V input, this
converter is an ideal choice for Intermediate Bus
Architectures where point-of-load power delivery is
generally a requirement. The YNV05T10 provides an
extremely tight regulated programmable output voltage
from 0.7525 V to 3.63 V.
YNV05T10 converters provide exceptional thermal
performance, even in high temperature environments with
minimal airflow. No derating is needed up to 85 C under
natural convection conditions. This is accomplished using
circuitry, packaging, and processing techniques to achieve
ultra-high efficiency and excellent thermal management,
along with a very sleek body profile.
The sleek body profile and the preclusion of heat sinks
minimize impedance to system airflow, thus enhancing
cooling for both upstream and downstream devices. The
use of 100% automation for assembly, coupled with
advanced power electronics and thermal design, results in
a product with extremely high reliability.
▪
▪
▪
▪
▪
Intermediate Bus Architectures
Telecommunications
Data Communications
Distributed Power Architectures
Servers, Workstations
▪
▪
High efficiency – no heat sink required
Reduces Total Solution Board Area
Minimizes Part Numbers in Inventory
▪
2
YNV05T10 DC-DC Converter
Conditions: TA = 25 ºC, Airflow = 200 LFM (1 m/s), Vin = 5 VDC, Vout = 0.7525 – 3.63 V, unless otherwise specified.
PARAMETER
NOTES
MIN
Continuous
TYP
MAX
UNITS
-0.3
6
VDC
Operating Ambient Temperature
-40
85
°C
Storage Temperature
-55
125
°C
ABSOLUTE MAXIMUM RATINGS
Input Voltage
FEATURE CHARACTERISTICS
Switching Frequency
300
Output Voltage Programming Range
Remote Sense Compensation
1
By external resistor, See Trim Table 1
0.7525
1
Turn-On Delay Time2
kHz
3.63
VDC
0.5
VDC
Full resistive load
With Vin = (Converter Enabled, then Vin applied)
From Vin = Vin(min) to Vo=0.1* Vo(nom)
3.5
ms
With Enable (Vin = Vin(nom) applied, then enabled
From enable to Vo= 0.1*Vo(nom)
3.5
ms
2
Rise time (Full resistive load)
ON/OFF Control (Positive Logic) 3
ON/OFF Control (Negative Logic) 3
From 0.1*Vo(nom) to 0.9*Vo (nom)
3.5
ms
Converter Off
-5
0.8
VDC
Converter On
2.4
5.5
VDC
Converter Off
2.4
5.5
VDC
Converter On
-5
0.8
VDC
For Vout 2.5 V
4.5
5.0
5.5
VDC
For Vout 2.5 V
3.0
5.0
5.5
VDC
2.05
2.15
VDC
INPUT CHARACTERISTICS
Operating Input Voltage Range
Input Under Voltage Lockout
Turn-on Threshold
Turn-off Threshold
1.75
1.9
VDC
Maximum Input Current
Vin = 4.5V, Iout = 10A
VOUT = 3.3 VDC
7.8
ADC
Vin = 3.0V, Iout = 10A
Vin = 3.0V, Iout = 10A
VOUT = 2.5 VDC
9
ADC
VOUT = 2.0 VDC
7.3
ADC
Vin = 3.0V, Iout = 10A
VOUT = 1.8 VDC
6.7
ADC
Vin = 3.0V, Iout = 10A
VOUT = 1.5 VDC
5.7
ADC
Vin = 3.0V, Iout = 10A
VOUT = 1.2 VDC
4.7
ADC
Vin = 3.0V, Iout = 10A
VOUT = 1.0 VDC
4.0
ADC
Vin = 3.0V, Iout = 10A
VOUT = 0.7525 VDC
3.3
ADC
Input Stand-by Current (Converter disabled)
Vin = 5.0 VDC
Input No Load Current (Converter enabled)
Vin = 5.5 VDC
Input Reflected-Ripple Current - is
10
mA
VOUT = 3.3 VDC
90
mA
VOUT = 2.5 VDC
85
mA
VOUT = 2.0 VDC
80
mA
VOUT = 1.8 VDC
75
mA
VOUT = 1.5 VDC
70
mA
VOUT = 1.2 VDC
65
mA
VOUT = 1.0 VDC
60
mA
VOUT = 0.7525 VDC
50
mA
See Fig. G for setup. (BW=20MHz)
15
mAP-P
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3
YNV05T10 DC-DC Converter
OUTPUT CHARACTERISTICS
Output Voltage Set Point (no load)
Output Regulation
-1.5
Vout
+1.5
%Vout
4
Over Line
Vin = 3.0 V – 5.5 V, Full resistive load
0.2
%Vout
Over Load
Output Voltage Tolerance
(Overall operating input voltage, resistive load
and temperature conditions until end of life )
Output Ripple and Noise - 20MHz bandwidth (Fig. G)
From no load to full load
0.4
%Vout
Peak-to-Peak
Vout = 3.3 V Full load
40
70
mVP-P
Peak-to-Peak
Vout = 0.7525 V Full load
20
40
mVP-P
External Load Capacitance
Plus full load (resistive)
1000
μF
5000
μF
10
A
18.5
A
-3
+3
Over line, load and temperature
Min ESR > 1 mΩ
Min ESR > 10 mΩ
Output Current Range
0
Output Current Limit Inception (IOUT)
Output Short- Circuit Current (Hiccup mode)
%Vout
15
Short=10 mΩ, continuous
3
Arms
1205
mV
40
µs
DYNAMIC RESPONSE
Load current change from 5A – 10A, di/dt = 5 A/μS
Co = 100 μF ceramic + 1 μF ceramic
Settling Time (VOUT < 10% peak deviation)
Unloading current change 10A – 5A, di/dt =-5 A/μS
Co = 100 μF ceramic + 1 μF ceramic
Settling Time (VOUT < 10% peak deviation)
EFFICIENCY
125
5
mV
40
µs
VOUT = 3.3 VDC
95.5
%
VOUT = 2.5 VDC
93.5
%
VOUT = 2.0 VDC
92.0
%
VOUT = 1.8 VDC
91.5
%
VOUT = 1.5 VDC
90.0
%
VOUT = 1.2 VDC
88.5
%
VOUT = 1.0 VDC
86.5
%
VOUT = 0.7525 VDC
83.0
%
Full load (5A)
Notes:
1
2
3
4
5
The output voltage should not exceed 3.63 V (taking into account both the programming and remote sense compensation).
Note that start-up time is the sum of turn-on delay time and rise time
The converter is on if ON/OFF pin is left open.
Trim resistor connected across the GND (pin 5) and TRIM pins of the converter.
See waveforms for dynamic response and settling time for different output voltages.
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4
YNV05T10 DC-DC Converter
Input and Output Impedance
140
Input Voltage Ripple [mV] .
Input Voltage Ripple [mV] .
The YNV05T10 non-isolated converter should be connected via a low impedance to the DC power source. In many
applications, the inductance associated with the distribution from the power source to the input of the converter can
affect the stability of the converter. It is recommended to use decoupling capacitors (minimum 47 μF) placed as close
as possible to the converter input pins in order to ensure stability of the converter and reduce input ripple voltage.
Internally, the converter has 52 uF (low ESR ceramics) of input capacitance.
In a typical application, low - ESR tantalum or POS capacitors will be sufficient to provide adequate ripple voltage
filtering at the input of the converter. However, very low ESR ceramic capacitors 47 μF-100 μF are recommended at the
input of the converter in order to minimize the input ripple voltage. They should be placed as close as possible to the
input pins of the converter.
The YNV05T10 has been designed for stable operation with or without external output capacitance. Low ESR ceramic
capacitors placed as close as possible to the load (Min 47 μF) are recommended for improved transient performance
and lower output voltage ripple.
It is important to keep low resistance and low inductance PCB traces when the connecting load to the output pins of
the converter in order to maintain good load regulation.
120
100
80
60
40
Vin=5.0V
20
Vin=3.3V
160
140
120
100
80
60
40
Vin=5.0V
20
Vin=3.3V
0
0
0
1
2
3
0
4
1
2
3
4
Vout [V]
Vout [V]
Fig. B: Input Voltage Ripple, CIN = 470 μF polymer + 2x47μF
ceramic
Fig. A: Input Voltage Ripple, CIN = 4x47 μF ceramic.
ON/OFF (Pin 10)
The ON/OFF pin is used to turn the converter on or off remotely via a system signal. There are two remote control
options available, positive logic (standard option) and negative logic, and both are referenced to GND. Typical
connections are shown in Fig. C.
7,8
TM
Vin
Nex -v Series
Converter
R*
3
SENSE
1,2,4
10
ON/OFF
Vout
Vin
TRIM
9
Rload
6
5
GND
GND
CONTROL
INPUT
R* is for negative logic option only
Fig. C: Circuit configuration for ON/OFF function.
The positive logic version turns the converter on when the ON/OFF pin is at a logic high or left open, and turns
converter off when at a logic low or shorted to GND.
The negative logic version turns the converter on when the ON/OFF pin is at a logic low or left open, and turns the
converter off when the ON/OFF pin is at a logic high or connected to Vin.
ON/OFF pin is internally pulled-up to Vin for a positive logic version, and pulled-down for a negative logic version. A TTL
or CMOS logic gate, open collector (open drain) transistor can be used to drive ON/OFF pin. When using open collector
(open drain) transistor with a negative logic option, add a pull-up resistor (R*) of 10K to Vin as shown in Fig. C. External
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5
YNV05T10 DC-DC Converter
pull-up resistor (R*) can be increased to 20 K if minimum input voltage is more than 4.5 V. This device must be capable
of:
– sinking up to 0.6 mA at a low level voltage of 0.8 V
– sourcing up to 0.25 mA at a high logic level of 2.3 V – 5.5 V
Remote Sense (Pin 3)
The remote sense feature of the converter compensates for voltage drops occurring only between Vout of the converter
and the load. The SENSE (Pin 3) pin should be connected at the load or at the point where regulation is required (see
Fig. D). There is no sense feature on the output GND return pin, where a solid ground plane is recommended to provide
a low voltage drop.
If remote sensing is not required, the SENSE pin must be connected to the Vout to ensure the converter will regulate at
the specified output voltage. If these connections are not made, the converter will deliver an output voltage that is
slightly higher than the specified value.
7,8
TM
Vin
Nex -v Series
Converter
3
SENSE
1,2,4
Rw
Vout
10
ON/OFF
Vin
9
TRIM
6
Rload
5
GND
GND
Rw
Fig. D: Remote sense circuit configuration.
Because the sense lead carries minimal current, large trace on the end-user board is not required. However, the sense
trace should be located close to a ground plane to minimize system noise and insure optimum performance.
When utilizing the remote sense feature, care must be taken not to exceed the maximum allowable output power
capability of the converter, equal to the product of the nominal output voltage and the allowable output current for the
given conditions.
When using remote sense, the output voltage of the converter can be increased up to 0.5 V above the sense point
voltage in order to maintain the required voltage across the load. Therefore, the designer must, if necessary, decrease
the maximum current (originally obtained from the derating curves) by the same percentage to ensure the converter’s
actual output power remains at or below the maximum allowable output power.
Output Voltage Programming (Pin 9)
The output voltage can be programmed from 0.7525 V to 3.63 V by connecting an external resistor between the TRIM
pin (Pin 9) and the GND pin (Pin 5); see Fig. E. Note that when a trim resistor is not connected, the output voltage of the
converter is 0.7525V.
A trim resistor, RTRIM, for a desired output voltage can be calculated using the following equation:
RTRIM =
21.07
− 5.11
(VO -REQ - 0.7525)
[k]
where,
RTRIM = Required value of trim resistor [k]
VO−REQ = Desired (trimmed) output voltage [V]
7,8
TM
Vin
Nex -v Series
Converter
3
SENSE
1,2,4
Vout
10
ON/OFF
Vin
TRIM
6
GND
9
GND 5
RTRIM
Rload
Fig. E: Configuration for programming output voltage.
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YNV05T10 DC-DC Converter
Note that the tolerance of a trim resistor directly affects the output voltage tolerance. It is recommended to use
standard 1% or 0.5% resistors. For tighter tolerance, two resistors in parallel are recommended rather than one
standard value from Table 1.
Ground pin of the trim resistor should be connected directly to the converter GND pin (Pin 5) with no voltage drop in
between. Table 1 provides the trim resistor values for popular output voltages.
V0-REG [V]
RTRIM [kΩ]
0.7525
1.0
1.2
1.5
1.8
2.0
2.5
3.3
3.63
open
80.0
41.97
23.1
15
11.78
6.95
3.16
2.21
The Closest Standard
Value [kΩ]
80.6
42.2
23.2
15
11.8
6.98
3.16
2.21
Table 1: Trim Resistor Value
The output voltage can also be programmed by external voltage source. To make trimming less sensitive, a series
external resistor (Rext) is recommended between the Trim pin (pin 9) and the programming voltage source. Control
Voltage can be calculated by the formula:
VCTRL = 0.7 −
(5.11 + REXT )(VO-REQ - 0.7525)
30.1
[V]
where,
VCTRL = Control voltage [V]
REXT = External resistor between TRIM pin and voltage source; the value can be chosen depending on the required
output voltage range [k]
Control voltages with REXT = 0 and REXT = 15K are shown in Table 2.
V0-REG [V]
0.7525
1.0
1.2
1.5
1.8
2.0
2.5
3.3
3.63
REXT = 0
0.700
0.658
0.624
0.573
0.522
0.488
0.403
0.268
0.257
REXT = 15 K
0.700
0.535
0.401
0.201
-0.000
-0.133
-0.468
-1.002
-1.044
Table 2: Control Voltage [VDC]
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YNV05T10 DC-DC Converter
Input Undervoltage Lockout
Input undervoltage lockout is standard with this converter. The converter will shut down when the input voltage drops
below a pre-determined voltage; it will start automatically when Vin returns to a specified range.
The input voltage must be typically 2.0V for the converter to turn on. Once the converter has been turned on, it will shut
off when the input voltage drops below typically 1.9V.
Output Overcurrent Protection (OCP)
The converter is protected against over-current and short circuit conditions. Upon sensing an over-current condition,
the converter will enter hiccup mode. Once the over-load or short circuit condition is removed, Vout will return to
nominal value.
Overtemperature Protection (OTP)
The converter will shut down under an over-temperature condition to protect itself from overheating caused by
operation outside the thermal derating curves, or operation in abnormal conditions such as system fan failure. After the
converter has cooled to a safe operating temperature, it will automatically restart.
Safety Requirements
Approved to the latest edition and amendment of ITE Safety standards UL/CSA 62368-1 and EN/IEC 62368-1.
The maximum DC voltage between any two pins is Vin under all operating conditions. Therefore, the unit has ELV (extra
low voltage) output; it meets ES1 requirements under the condition that all input voltages are ELV.
The converter is not internally fused. To comply with safety agencies requirements, a recognized fuse with a maximum
rating of 20 Amps must be used in series with the input line.
General Information
The converter has been characterized for many operational aspects, to include thermal derating (maximum load current
as a function of ambient temperature and airflow) for vertical and horizontal mounting, efficiency, start-up parameters,
output ripple and noise, and transient response to load step-change.
The figures are numbered as Fig. x.y, where x indicates the different output voltages, and y associates with specific
plots (y = 1 for the vertical thermal derating, …). For example, Fig. x.1 will refer to the vertical thermal derating for all the
output voltages in general.
The following pages contain specific plots or waveforms associated with the converter. Additional comments for
specific data are provided below.
Test Conditions
All thermal and efficiency data presented were taken with the converter soldered to a test board, specifically a 0.060”
thick printed wiring board (PWB) with four layers. The top and bottom layers were not metalized. The two inner layers,
comprising two-ounce copper, were used to provide traces for connectivity to the converter.
The lack of metalization on the outer layers as well as the limited thermal connection ensured that heat transfer from the
converter to the PWB was minimized. This provides a worst-case but consistent scenario for thermal derating
purposes.
All measurements requiring airflow were made in vertical and horizontal wind tunnel facilities using Infrared (IR)
thermography and thermocouples for thermometry.
Ensuring components on the converter do not exceed their ratings is important to maintaining high reliability. If one
anticipates operating the converter at or close to the maximum loads specified in the derating curves, it is prudent to
check actual operating temperatures in the application. Thermographic imaging is preferable; if this capability is not
available, then thermocouples may be used. Bel Power Solutions recommends the use of AWG #40 gauge
thermocouples to ensure measurement accuracy. Careful routing of the thermocouple leads will further minimize
measurement error. Refer to Fig. F for optimum measuring thermocouple location.
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8
YNV05T10 DC-DC Converter
Fig. F: Location of the thermocouple for thermal testing.
Thermal Derating
Load current vs. ambient temperature and airflow rates are given in Figs. x.1 to x.2 for maximum temperature of 120 °C.
Ambient temperature was varied between 25 °C and 85 °C, with airflow rates from 30 to 500 LFM (0.15 m/s to 2.5 m/s),
and vertical and horizontal converter mounting. The airflow during the testing is parallel to the long axis of the converter,
going from ON/OFF pin to output pins.
For each set of conditions, the maximum load current was defined as the lowest of:
(i) The output current at which any MOSFET temperature does not exceed a maximum specified temperature (120 °C)
as indicated by the thermographic image, or
(ii) The maximum current rating of the converter (10 A)
During normal operation, derating curves with maximum FET temperature less than or equal to 120°C should not be
exceeded. Temperature on the PCB at the thermocouple locations shown in Fig. F should not exceed 120 °C in order to
operate inside the derating curves.
Efficiency
Fig. x.3 show the efficiency vs. load current plot for ambient temperature of 2 5 ºC, airflow rate of 200 LFM (1 m/s) and
input voltages of 4.5 V, 5.0 V, and 5.5 V.
Fig. x.4 show the efficiency vs. load current plot for ambient temperature of 25 ºC, airflow rate of 200 LFM (1 m/s) and
input voltages of 3.0 V, 3.3 V, and 3.6 V for output voltages 2.5 V.
Power Dissipation
Fig. 3.3V.4 shows the power dissipation vs. load current plot for Ta = 25 ºC, airflow rate of 200 LFM (1 m/s) with vertical
mounting and input voltages of 4.5 V, 5.0 V and 5.5 V for 3.3V output voltage.
Start-up
Output voltage waveforms, during the turn-on transient with application of Vin at full rated load current (resistive load)
are shown with 47F external load capacitance at Vin = 5V in Fig. x.5.
Ripple and Noise
The output voltage ripple waveform is measured at full rated load current. Note that all output voltage waveforms are
measured across a 1 F ceramic capacitor.
The output voltage ripple and input reflected ripple current waveforms are obtained using the test setup shown in Fig.
G.
iS
1 H
source
inductance
Vsource
Vin
Vout
TM
CIN
Nex -v Series
DC/DC
Converter
4 x 47F
ceramic
capacitor
GND
1F
ceramic
capacitor
CO
47F
ceramic
capacitor
Vout
GND
Fig. G: Test setup for measuring input reflected ripple currents, is and output voltage ripple.
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9
12
12
10
10
Load Current [Adc]
Load Current [Adc]
YNV05T10 DC-DC Converter
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
0
0
20
30
40
50
60
70
80
90
20
30
40
Ambient Temperature [°C]
60
70
80
90
Ambient Temperature [°C]
Fig. 3.3V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 3.3V converter mounted vertically
with Vin = 5V, air flowing from pin 10 to pin 1, and maximum
MOSFET temperature 120C.
Fig. 3.3V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 3.3V converter mounted
horizontally with Vin = 5V, air flowing from pin 10 to pin 1, and
maximum MOSFET temperature 120C.
1.00
2.0
0.95
1.6
Power Dissipation [W]
Efficiency
50
0.90
0.85
5.5 V
5.0 V
4.5 V
0.80
1.2
0.8
5.5 V
5.0 V
4.5 V
0.4
0.75
0.0
0
2
4
6
8
10
12
0
2
Load Current [Adc]
4
6
8
10
12
Load Current [Adc]
Fig. 3.3V.3: Efficiency vs. load current and input voltage for
Vout = 3.3V converter mounted vertically with air flowing from
pin 10 to pin 1 at a rate of 200 LFM (1m/s) and Ta = 25C.
Fig. 3.3V.4: Power loss vs. load current and input voltage for
Vout = 3.3V converter mounted vertically with air flowing from
pin 10 to pin 1 at a rate of 200 LFM (1m/s) and Ta = 25C.
Fig. 3.3V.5: Turn-on transient for Vout = 3.3V with application
of Vin at full rated load current (resistive) and 47μF external
capacitance at Vin = 5V. Top trace: Vin (5V/div.); Bottom
trace: output voltage (1V/div.); Time scale: 2ms/div.
Fig. 3.3V.6: Output voltage ripple (20mV/div.) at full rated load
current into a resistive load with external capacitance 47μF
ceramic + 1μF ceramic and Vin = 5V for Vout = 3.3V. Time
scale: 2μs/div.
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YNV05T10 DC-DC Converter
Fig. 3.3V.7: Output voltage response for Vout = 3.3V to
positive load current step change from 2.5A to 5A with slew
rate of 5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
Fig. 3.3V.8: Output voltage response for Vout = 3.3V to
negative load current step change from 5A to 2.5A with slew
rate of -5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
10
10
Load Current [Adc]
12
Load Current [Adc]
12
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
0
0
20
30
40
50
60
70
80
90
20
30
40
Ambient Temperature [°C]
Fig. 2.5V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 2.5V converter mounted vertically
with air flowing from pin 10 to pin 1, and maximum MOSFET
temperature 120C.
60
70
80
90
Fig. 2.5V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 2.5V converter mounted
horizontally with air flowing from pin 10 to pin 1, and
maximum MOSFET temperature 120C.
1.00
1.00
0.95
0.95
0.90
0.90
Efficiency
Efficiency
50
Ambient Temperature [°C]
0.85
5.5 V
5.0 V
4.5 V
0.80
0.85
3.6 V
3.3 V
3.0 V
0.80
0.75
0.75
0
2
4
6
8
10
12
Load Current [Adc]
Fig. 2.5V.3: Efficiency vs. load current and input voltage for
Vout = 2.5V converter mounted vertically with air flowing from
pin 10 to pin 1 at a rate of 200 LFM (1m/s) and Ta = 25C.
0
2
4
6
8
10
12
Load Current [Adc]
Fig. 2.5V.4: Efficiency vs. load current and input voltage for
Vout = 2.5V converter mounted vertically with air flowing from
pin 10 to pin 1 at a rate of 200 LFM (1m/s) and Ta = 25C.
tech.support@psbel.com
11
YNV05T10 DC-DC Converter
Fig. 2.5V.6: Output voltage ripple (20mV/div.) at full rated load
current into a resistive load with external capacitance 47μF
ceramic + 1μF ceramic and Vin = 5V for Vout = 2.5V. Time
scale: 2μs/div.
Fig. 2.5V.7: Output voltage response for Vout = 2.5V to
positive load current step change from 2.5A to 5A with slew
rate of 5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
Fig. 2.5V.8: Output voltage response for Vout = 2.5V to
negative load current step change from 5A to 2.5A with slew
rate of -5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
12
12
10
10
Load Current [Adc]
Load Current [Adc]
Fig. 2.5V.5: Turn-on transient for Vout = 2.5V with application
of Vin at full rated load current (resistive) and 47μF external
capacitance at Vin = 5V. Top trace: Vin (5V/div.); Bottom
trace: output voltage (1V/div.); Time scale: 2ms/div.
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
0
0
20
30
40
50
60
70
80
90
20
30
Ambient Temperature [°C]
Fig. 2.0V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 2.0V converter mounted vertically
with air flowing from pin 10 to pin 1, and maximum MOSFET
temperature 120C.
40
50
60
70
80
90
Ambient Temperature [°C]
Fig. 2.0V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 2.0V converter mounted
horizontally with air flowing from pin 10 to pin 1, and
maximum MOSFET temperature 120C.
Europe, Middle East
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North America
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BCD.00674_B1
Asia-Pacific
+86 755 298 85888
12
1.00
1.00
0.95
0.95
0.90
0.90
Efficiency
Efficiency
YNV05T10 DC-DC Converter
0.85
5.5 V
5.0 V
4.5 V
0.80
0.85
3.6 V
3.3 V
3.0 V
0.80
0.75
0.75
0
2
4
6
8
10
12
Load Current [Adc]
0
2
4
6
8
10
12
Load Current [Adc]
Fig. 2.0V.3: Efficiency vs. load current and input voltage for
Vout = 2.0V converter mounted vertically with air flowing from
pin 10 to pin 1 at a rate of 200 LFM (1m/s) and Ta = 25C.
Fig. 2.0V.4: Efficiency vs. load current and input voltage for
Vout = 2.0V converter mounted vertically with air flowing from
pin 10 to pin 1 at a rate of 200 LFM (1m/s) and Ta = 25C.
Fig. 2.0V.5: Turn-on transient for Vout = 2.0V with application
of Vin at full rated load current (resistive) and 47μF external
capacitance at Vin = 5V. Top trace: Vin (5V/div.); Bottom
trace: output voltage (1V/div.); Time scale: 2ms/div.
Fig. 2.0V.6: Output voltage ripple (20mV/div.) at full rated load
current into a resistive load with external capacitance 47μF
ceramic + 1μF ceramic and Vin = 5V for Vout = 2.0V. Time
scale: 2μs/div.
Fig. 2.0V.7: Output voltage response for Vout = 2.0V to
positive load current step change from 2.5A to 5A with slew
rate of 5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
Fig. 2.0V.8: Output voltage response for Vout = 2.0V to
negative load current step change from 5A to 2.5A with slew
rate of -5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
tech.support@psbel.com
13
12
12
10
10
Load Current [Adc]
Load Current [Adc]
YNV05T10 DC-DC Converter
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
0
0
20
30
40
50
60
70
80
90
20
30
40
Ambient Temperature [°C]
60
70
80
90
Ambient Temperature [°C]
Fig. 1.8V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 1.8V converter mounted vertically
with air flowing from pin 10 to pin 1, and maximum MOSFET
temperature 120C.
Fig. 1.8V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 1.8V converter mounted
horizontally with air flowing from pin 10 to pin 1, and
maximum MOSFET temperature 120C.
1.00
1.00
0.95
0.95
0.90
0.90
Efficiency
Efficiency
50
0.85
5.5 V
5.0 V
4.5 V
0.80
0.85
3.6 V
3.3 V
3.0 V
0.80
0.75
0.75
0
2
4
6
8
10
12
0
2
Load Current [Adc]
4
6
8
10
12
Load Current [Adc]
Fig. 1.8V.3: Efficiency vs. load current and input voltage for
Vout = 1.8V converter mounted vertically with air flowing from
pin 10 to pin 1 at a rate of 200 LFM (1m/s) and Ta = 25C.
Fig. 1.8V.4: Efficiency vs. load current and input voltage for
Vout = 1.8V converter mounted vertically with air flowing from
pin 10 to pin 1 at a rate of 200 LFM (1m/s) and Ta = 25C.
Fig. 1.8V.5: Turn-on transient for Vout = 1.8V with application
of Vin at full rated load current (resistive) and 47μF external
capacitance at Vin = 5V. Top trace: Vin (5V/div.); Bottom
trace: output voltage (1V/div.); Time scale: 2ms/div.
Fig. 1.8V.6: Output voltage ripple (20mV/div.) at full rated load
current into a resistive load with external capacitance 47μF
ceramic + 1μF ceramic and Vin = 5V for Vout = 1.8V. Time
scale: 2μs/div.
Europe, Middle East
+353 61 225 977
North America
+1 408 785 5200
© 2020 Bel Power Solutions & Protection
BCD.00674_B1
Asia-Pacific
+86 755 298 85888
14
YNV05T10 DC-DC Converter
Fig. 1.8V.8: Output voltage response for Vout = 1.8V to
negative load current step change from 5A to 2.5A with slew
rate of -5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
12
12
10
10
Load Current [Adc]
Load Current [Adc]
Fig. 1.8V.7: Output voltage response for Vout = 1.8V to
positive load current step change from 2.5A to 5A with slew
rate of 5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
0
0
20
30
40
50
60
70
80
90
20
30
40
Ambient Temperature [°C]
1.00
1.00
0.95
0.95
0.90
0.90
0.85
5.5 V
5.0 V
4.5 V
0.80
4
6
8
70
80
90
10
0.85
3.6 V
3.3 V
3.0 V
0.80
0.75
2
60
Fig. 1.5V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 1.5V converter mounted
horizontally with air flowing from pin 10 to pin 1, and
maximum MOSFET temperature 120C.
Efficiency
Efficiency
Fig. 1.5V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 1.5V converter mounted vertically
with air flowing from pin 10 to pin 1, and maximum MOSFET
temperature 120C.
0
50
Ambient Temperature [°C]
12
Load Current [Adc]
Fig. 1.5V.3: Efficiency vs. load current and input voltage for
Vout = 1.5V converter mounted vertically with air flowing from
pin 10 to pin 1 at a rate of 200 LFM (1m/s) and Ta = 25C.
0.75
0
2
4
6
8
10
12
Load Current [Adc]
Fig. 1.5V.4: Efficiency vs. load current and input voltage for
Vout = 1.5V converter mounted vertically with air flowing from
pin 10 to pin 1 at a rate of 200 LFM (1m/s) and Ta = 25C.
tech.support@psbel.com
15
YNV05T10 DC-DC Converter
Fig. 1.5V.6: Output voltage ripple (20mV/div.) at full rated load
current into a resistive load with external capacitance 47μF
ceramic + 1μF ceramic and Vin = 5V for Vout = 1.5V. Time
scale: 2μs/div.
Fig. 1.5V.7: Output voltage response for Vout = 1.5V to
positive load current step change from 2.5A to 5A with slew
rate of 5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
Fig. 1.5V.8: Output voltage response for Vout = 1.5V to
negative load current step change from 5A to 2.5A with slew
rate of -5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
12
12
10
10
Load Current [Adc]
Load Current [Adc]
Fig. 1.5V.5: Turn-on transient for Vout = 1.5V with application
of Vin at full rated load current (resistive) and 47μF external
capacitance at Vin = 5V. Top trace: Vin (5V/div.); Bottom
trace: output voltage (1V/div.); Time scale: 2ms/div.
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
0
0
20
30
40
50
60
70
80
90
20
30
Ambient Temperature [°C]
Fig. 1.2V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 1.2V converter mounted vertically
with air flowing from pin 10 to pin 1, and maximum MOSFET
temperature 120C.
40
50
60
70
80
90
Ambient Temperature [°C]
Fig. 1.2V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 1.2V converter mounted
horizontally with air flowing from pin 10 to pin 1, and
maximum MOSFET temperature 120C.
Europe, Middle East
+353 61 225 977
North America
+1 408 785 5200
© 2020 Bel Power Solutions & Protection
BCD.00674_B1
Asia-Pacific
+86 755 298 85888
YNV05T10 DC-DC Converter
1.00
1.00
0.95
0.95
Efficiency
Efficiency
16
0.90
0.85
5.5 V
5.0 V
4.5 V
0.80
0.90
0.85
3.6 V
3.3 V
3.0 V
0.80
0.75
0.75
0
2
4
6
8
10
12
Load Current [Adc]
0
2
4
6
8
10
12
Load Current [Adc]
Fig. 1.2V.3: Efficiency vs. load current and input voltage for
Vout = 1.2V converter mounted vertically with air flowing from
pin 10 to pin 1 at a rate of 200 LFM (1m/s) and Ta = 25C.
Fig. 1.2V.4: Efficiency vs. load current and input voltage for
Vout = 1.2V converter mounted vertically with air flowing from
pin 10 to pin 1 at a rate of 200 LFM (1m/s) and Ta = 25C.
Fig. 1.2V.5: Turn-on transient for Vout = 1.2V with application
of Vin at full rated load current (resistive) and 47μF external
capacitance at Vin = 5V. Top trace: Vin (5V/div.); Bottom
trace: output voltage (1V/div.); Time scale: 2ms/div.
Fig. 1.2V.6: Output voltage ripple (20mV/div.) at full rated load
current into a resistive load with external capacitance 47μF
ceramic + 1μF ceramic and Vin = 5V for Vout = 1.2V. Time
scale: 2μs/div.
Fig. 1.2V.7: Output voltage response for Vout = 1.2V to
positive load current step change from 2.5A to 5A with slew
rate of 5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
Fig. 1.2V.8: Output voltage response for Vout = 1.2V to
negative load current step change from 5A to 2.5A with slew
rate of -5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
tech.support@psbel.com
17
12
12
10
10
Load Current [Adc]
Load Current [Adc]
YNV05T10 DC-DC Converter
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
0
0
20
30
40
50
60
70
80
90
20
30
40
Ambient Temperature [°C]
60
70
80
90
Ambient Temperature [°C]
Fig. 1.0V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 1.0V converter mounted vertically
with air flowing from pin 10 to pin 1, and maximum MOSFET
temperature 120C.
Fig. 1.0V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 1.0V converter mounted
horizontally with air flowing from pin 10 to pin 1, and
maximum MOSFET temperature 120C.
0.95
0.95
0.90
0.90
0.85
0.85
Efficiency
Efficiency
50
0.80
5.5 V
5.0 V
4.5 V
0.75
0.80
3.6 V
3.3 V
3.0 V
0.75
0.70
0.70
0
2
4
6
8
10
12
0
2
Load Current [Adc]
4
6
8
10
12
Load Current [Adc]
Fig. 1.0V.3: Efficiency vs. load current and input voltage for
Vout = 1.0V converter mounted vertically with air flowing from
pin 10 to pin 1 at a rate of 200 LFM (1m/s) and Ta = 25C.
Fig. 1.0V.4: Efficiency vs. load current and input voltage for
Vout = 1.0V converter mounted vertically with air flowing from
pin 10 to pin 1 at a rate of 200 LFM (1m/s) and Ta = 25C.
Fig. 1.0V.5: Turn-on transient for Vout = 1.0V with application
of Vin at full rated load current (resistive) and 47μF external
capacitance at Vin = 5V. Top trace: Vin (5V/div.); Bottom
trace: output voltage (1V/div.); Time scale: 2ms/div.
Fig. 1.0V.6: Output voltage ripple (20mV/div.) at full rated load
current into a resistive load with external capacitance 47μF
ceramic + 1μF ceramic and Vin = 5V for Vout = 1.0V. Time
scale: 2μs/div.
Europe, Middle East
+353 61 225 977
North America
+1 408 785 5200
© 2020 Bel Power Solutions & Protection
BCD.00674_B1
Asia-Pacific
+86 755 298 85888
18
YNV05T10 DC-DC Converter
Fig. 1.0V.8: Output voltage response for Vout = 1.0V to
negative load current step change from 5A to 2.5A with slew
rate of -5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
12
12
10
10
Load Current [Adc]
Load Current [Adc]
Fig. 1.0V.7: Output voltage response for Vout = 1.0V to
positive load current step change from 2.5A to 5A with slew
rate of 5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
8
6
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
4
2
0
0
20
30
40
50
60
70
80
90
20
30
40
Ambient Temperature [°C]
Fig. 0.7525V.1: Available load current vs. ambient temperature
and airflow rates for Vout = 0.7525V converter mounted
vertically with air flowing from pin 10 to pin 1, and maximum
MOSFET temperature 120C.
60
70
80
90
Fig. 0.7525V.2: Available load current vs. ambient temperature
and airflow rates for Vout = 0.7525V converter mounted
horizontally with air flowing from pin 10 to pin 1, and
maximum MOSFET temperature 120C.
0.95
0.95
0.90
0.90
0.85
0.85
Efficiency
Efficiency
50
Ambient Temperature [°C]
0.80
5.5 V
5.0 V
4.5 V
0.75
0.80
3.6 V
3.3 V
3.0 V
0.75
0.70
0.70
0
2
4
6
8
10
12
Load Current [Adc]
Fig. 0.7525V.3: Efficiency vs. load current and input voltage
for Vout = 0.7525V converter mounted vertically with air
flowing from pin 10 to pin 1 at a rate of 200 LFM (1m/s) and
Ta = 25C.
0
2
4
6
8
10
12
Load Current [Adc]
Fig. 0.7525V.4: Efficiency vs. load current and input voltage
for Vout = 0.7525V converter mounted vertically with air
flowing from pin 10 to pin 1 at a rate of 200 LFM (1m/s) and
Ta = 25C.
tech.support@psbel.com
19
YNV05T10 DC-DC Converter
Fig. 0.7525V.5: Turn-on transient for Vout = 0.7525V with
application of Vin at full rated load current (resistive) and 47μF
external capacitance at Vin = 5V. Top trace: Vin (5V/div.);
Bottom trace: output voltage (1V/div.); Time scale: 2ms/div.
Fig. 0.7525V.6: Output voltage ripple (20mV/div.) at full rated
load current into a resistive load with external capacitance
47μF ceramic + 1μF ceramic and Vin = 5V for Vout = 0.7525V.
Time scale: 2μs/div.
Fig. 0.7525V.7: Output voltage response for Vout = 0.7525V to
positive load current step change from 2.5A to 5A with slew
rate of 5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
Fig. 0.7525V.8: Output voltage response for Vout = 0.7525V to
negative load current step change from 5A to 2.5A with slew
rate of -5A/μs at Vin = 5V. Top trace: output voltage
(100mV/div.); Bottom trace: load current (5A/div.). Co = 100μF
ceramic + 1μF ceramic. Time scale: 20μs/div.
Europe, Middle East
+353 61 225 977
North America
+1 408 785 5200
© 2020 Bel Power Solutions & Protection
BCD.00674_B1
Asia-Pacific
+86 755 298 85888
20
YNV05T10 DC-DC Converter
YNV05T10 Pinout (Through-Hole - SIP)
PAD/PIN CONNECTIONS
Pad/Pin #
Function
1
Vout
2
Vout
3
Vout SENSE
4
Vout
5
GND
6
GND
7
Vin
8
Vin
9
TRIM
10
ON/OFF
YNV05T10 Platform Notes
•
All dimensions are in inches [mm]
•
Connector Material: Phosphor Bronze/
Brass Alloy 360
•
Connector Finish: Gold over Nickel
•
Converter Weight: 0.26 oz [7.28 g]
•
Converter Height: 0.585” Max.
•
Recommended Through Hole Via/Pad:
Min. 0.043” X 0.064” [1.09 x 1.63]
Product
Series
YNV
Input
Voltage
05
Mounting Scheme
T
Rated Load
Current
10
Enable Logic
–
0
0 Standard (Positive Logic)
Y-Series
3.0 – 5.5 V
T Through-Hole
(SIP)
10 A
(0.7525V to 3.63 V)
Environmental
D Opposite of Standard
(Negative Logic)
No Suffix RoHS leadsolder-exempt compliant
G
RoHS compliant
for all six substances
The example above describes P/N YNV05T10-0: 3.0V – 5.5 V input, thru-hole (SIP), 10 A at 0.7525 V to 3.63 V output, standard
enable logic, and RoHS lead solder exemption compliant. Please consult factory regarding availability of a specific version.
NUCLEAR AND MEDICAL APPLICATIONS - Products are not designed or intended for use as critical components in life support
systems, equipment used in hazardous environments, or nuclear control systems.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change
depending on the date manufactured. Specifications are subject to change without notice.
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