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YV09T50-0G

型号：

YV09T50-0G

品牌：

BEL[ BEL FUSE INC. ]

页数：

13 页

PDF大小：

701 K

下载PDF手册
YV09T50 50A DC-DC POL Converter  
5V to 13.8V Input • 0.6V to 3.63V Output  
Data Sheet  
Member of the  
Family  
Features  
•
RoHS lead free and lead-solder-exempt products are  
available  
•
High efficiency multiphase synchronous buck  
topology  
•
•
•
•
•
Low noise fixed frequency operation  
Wide input voltage range: 5V–13.8V  
High continuous output current: 50A  
Programmable output voltage range: 0.6V–3.63V  
Overcurrent, output overvoltage, and overtemperature  
protections with automatic restart  
•
•
•
•
•
•
•
Remote differential output voltage sense  
Power Good signal  
Enable input  
Applications  
Start up into prebiased load  
No minimum load requirements  
High MTBF of 41.8 MHrs  
•
Low voltage, high density systems with  
Intermediate Bus Architectures (IBA)  
•
Point-of-load regulators for high performance  
DSP, FPGA, ASIC, and microprocessors  
Industry standard size through-hole single-in-line  
package and pinout  
•
•
Desktops, servers, and portable computing  
•
1.45”x0.725” (36.83mm x 18.41mm)  
Broadband, networking, optical, and  
communications systems  
•
•
•
•
Low height of 1.115” (28.32mm)  
Wide operating temperature range: 0 to 70ºC  
UL94 V-0 flammability rating  
Benefits  
•
•
One part that covers many applications  
UL60950, CSA C22.2 No. 60950-00, and TUV  
EN60950-1:2001  
Reduces board space, system cost and  
complexity, and time to market  
Description  
The YV09T50-0 non-isolated DC-DC point of load (POL) converter delivers up to 50A of output current in an  
industry-standard single-in-line (SIP) through-hole package. The YV09T50-0 POL converter is an ideal choice for  
Intermediate Bus Architectures where point of load conversion is a requirement. Operating from a 5.0-13.8V input  
the POL converter provides an extremely tightly regulated programmable output voltage of 0.6 V to 3.63V. The  
POL converters offer exceptional thermal performance, even in high temperature environment with minimal airflow.  
This performance is accomplished through the use of advanced circuit solutions, packaging and processing  
techniques. The resulting design possesses ultra-high efficiency, excellent thermal management, and a slim body  
profile that minimizes impedance to system airflow, thus enhancing cooling for both upstream and downstream  
devices. The use of automation for assembly, coupled with advanced power electronics and thermal design,  
results in a product with extremely high reliability.  
ZD-02078 Rev 1.0  
www.power-one.com  
Page 1 of 13  
YV09T50 50A DC-DC POL Converter  
5V to 13.8V Input • 0.6V to 3.63V Output  
Data Sheet  
1. Ordering Information  
Y
V
09  
T
50  
–
0
z
Product  
Family  
Profile  
Input  
Voltage  
PCB  
Mounting  
Output  
Current  
Dash  
ON/OFF Logic  
RoHS compliance  
No suffix - RoHS compliant  
with Pb solder exemption1  
G - RoHS compliant for all six  
substances  
POL  
Converter  
5V to  
13.8V  
Through-  
hole  
Vertical  
50A  
Positive Logic  
______________________________________  
1
The solder exemption refers to all the restricted materials except lead in solder. These materials are Cadmium (Cd), Hexavalent chromium  
(Cr6+), Mercury (Hg), Polybrominated biphenyls (PBB), Polybrominated diphenylethers (PBDE), and Lead (Pb) used anywhere except in  
solder.  
Example: YV09T50-0G: YV09T50-0 POL converter with positive ON/OFF logic and lead-free solder.  
2. Absolute Maximum Ratings  
Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely affect long-  
term reliability, and cause permanent damage to the converter.  
Parameter  
Conditions/Description  
Continuous  
Min  
-0.3  
0
Max  
15  
Units  
VDC  
°C  
Input Voltage  
Ambient Temperature Range  
Storage Temperature (Ts)  
Operating  
70  
-55  
125  
°C  
3. Environmental and Mechanical Specifications  
Parameter  
Conditions/Description  
Min  
Nom  
Max  
Units  
Weight  
25  
grams  
Calculated Per Telcordia Technologies SR-332  
Method I Case 1  
MTBF  
41.8  
MHrs  
50% electrical stress, 40°C ambient  
Lead Plating  
YV09T50-0 and YV09T50-0G  
100% Matte Tin  
ZD-02078 Rev 1.0  
www.power-one.com  
Page 2 of 13  
YV09T50 50A DC-DC POL Converter  
5V to 13.8V Input • 0.6V to 3.63V Output  
Data Sheet  
4. Electrical Specifications  
Specifications apply at the input voltage from 5V to 13.8V, output load from 0 to 50A, output voltage from 0.6V to  
3.63V, 470µF external output capacitor, and ambient temperature from 0°C to 70°C unless otherwise noted.  
4.1 Input Specifications  
Parameter  
Conditions/Description  
Min  
Nom  
Max  
Units  
Input voltage (VIN)  
VOUT≤0.55*VIN  
5
12  
13.8  
VDC  
Undervoltage Lockout  
Turn-On Threshold  
Input Voltage Ramping Up  
4.25  
3.75  
4.5  
4.75  
4.25  
VDC  
VDC  
Undervoltage Lockout  
Turn-Off Threshold  
Input Voltage Ramping Down  
4.0  
16  
Standby Input Current  
Maximum Input Current  
VIN=12V, POL is disabled via ON/OFF  
VIN=6V, VOUT=3.3V  
mADC  
ADC  
32  
Input Reflected Ripple Current  
Peak-to-Peak  
BW=5MHz to 20MHz, LSOURCE=1µH,  
See Figure 19 for setup  
60  
mA  
4.2 Output Specifications  
Parameter  
Conditions/Description  
Min  
Nom  
Max  
Units  
Programmable with a resistor between  
TRIM+ and TRIM- pins  
0.6  
3.63  
VDC  
Output Voltage Range (VOUT  
)
Output Voltage Setpoint Accuracy,  
VIN=12V, IOUT=IOUT MAX  
0.1% trim resistor, room temperature  
VIN=12V, IOUT=IOUT MAX  
,
-0.8  
-8  
0.8  
8
%VOUT  
mVDC  
VOUT≥1V  
Output Voltage Setpoint Accuracy,  
VOUT<1V  
,
0.1% trim resistor, room temperature  
Line Regulation, VOUT≥2.5V  
Load Regulation, VOUT≥2.5V  
Line Regulation, VOUT<2.5V  
Load Regulation, VOUT<2.5V  
VIN MIN to VIN MAX  
0.3  
0.6  
9
%VOUT  
%VOUT  
mVDC  
mVDC  
0 to IOUT MAX  
VIN MIN to VIN MAX  
0 to IOUT MAX  
12  
Over operating input voltage, resistive  
load, and temperature conditions until  
the end of life  
Output Voltage Regulation  
-1.1  
1.1  
%VOUT  
Output Voltage Peak-to-Peak  
Ripple and Noise, BW=20MHz,  
Full Load  
VIN=12V, VOUT=0.6V  
VIN=12V, VOUT=2.5V  
VIN=12V, VOUT=3.3V  
15  
20  
25  
30  
40  
50  
mV  
mV  
mV  
VIN=12V, VOUT=3.3V  
50 - 100% load step, Slew rate 10A/µs,  
to 10% of peak deviation  
Dynamic Regulation  
Peak Deviation  
Settling Time  
mV  
µs  
130  
80  
Efficiency  
VIN=12V  
Full Load  
VOUT=0.6V  
VOUT=1.2V  
VOUT=2.5V  
VOUT=3.3V  
72.8  
83.4  
90.5  
92.3  
%
%
%
%
Room temperature  
Output Current (IOUT  
)
VIN MIN to VIN MAX  
0
50  
ADC  
ZD-02078 Rev 1.0  
www.power-one.com  
Page 3 of 13  
 
YV09T50 50A DC-DC POL Converter  
5V to 13.8V Input • 0.6V to 3.63V Output  
Data Sheet  
Parameter  
Conditions/Description  
Min  
Nom  
Max  
Units  
Turn-On Delay Time1  
POL is Enabled  
ON/OFF pin is pulled high  
From VIN=VIN MIN to VOUT=0.1*VOUT.SET  
0.5  
1
ms  
VIN=12V  
Turn-On Delay Time1  
POL is Disabled  
From ON/OFF pin changing its state  
from low to high until VOUT=0.1*VOUT.SET  
0.5  
1.4  
1
ms  
Rise Time1  
COUT=0 µF, Resistive Load  
From VOUT=0.1*VOUT.SET to  
VOUT=0.9*VOUT.SET  
3
ms  
µF  
Admissible Output Capacitance  
VOUT≤2.5V  
IOUT=IOUT MAX, Resistive load,  
ESR>2.5mΩ  
5,000  
2,200  
Admissible Output Capacitance  
VOUT≥2.5V  
IOUT=IOUT MAX, Resistive load,  
ESR>2.5mΩ  
µF  
Switching Frequency  
2 phases combined  
900  
kHz  
__________________________  
1
Total start-up time is the sum of the turn-on delay time and the rise time  
4.3 Protection Specifications  
Parameter  
Conditions/Description  
Output Overcurrent Protection  
Min  
Nom  
Max  
Units  
Type  
Auto-Restart  
Inception Point  
55  
65  
5.5  
10  
75  
A
A
Output Short Circuit  
Current (RMS value)  
VOUT=2.5V, ROUT<0.01Ω  
Autorestart Period  
After IOUT drops below inception point  
ms  
Output Overvoltage Protection  
Type  
Auto-Restart  
Threshold  
IOUT=IOUT MAX, room temperature  
After VOUT drops below threshold voltage  
Overtemperature Protection  
120  
125  
0
130  
%VO.SET  
ms  
Autorestart Period  
Type  
Auto-Restart  
130  
Turn Off Threshold  
Temperature is increasing  
°C  
°C  
s
Temperature is decreasing after the POL was  
shut down by OTP  
Turn On Threshold  
Autorestart Period  
120  
3
After temperature drops below turn-on threshold  
Power Good Signal (PwrGood pin)  
VOUT is inside the PG window  
VOUT is outside the PG window  
High  
Low  
Logic  
N/A  
Low Output Voltage  
High Output Voltage  
ISINK=4mA  
0.5  
VDC  
VDC  
External pull-up  
2.4  
5.25  
ZD-02078 Rev 1.0  
www.power-one.com  
Page 4 of 13  
YV09T50 50A DC-DC POL Converter  
5V to 13.8V Input • 0.6V to 3.63V Output  
Data Sheet  
4.4 Feature Specifications  
Parameter  
Conditions/Description  
Enable (ON/OFF pin)  
Min  
Nom  
Max  
Units  
ON/OFF Logic  
Positive (enables the output when ON/OFF pin is open)  
N/A  
ON/OFF High Input Voltage  
ON/OFF High Input Current  
ON/OFF Low Input Voltage  
ON/OFF Low Input Current  
POL is ON  
POL is ON  
POL is OFF  
POL is OFF  
2.4  
VIN.MAX  
0.5  
VDC  
mADC  
VDC  
-0.3  
1.2  
0.12  
µADC  
Remote Voltage Sense (+VS and –VS pins)  
Voltage Drop Compensation1  
500  
mV  
1
The output voltage measured directly between Vout and GND pins shall never exceed 3.63V  
ZD-02078 Rev 1.0  
www.power-one.com  
Page 5 of 13  
 
YV09T50 50A DC-DC POL Converter  
5V to 13.8V Input • 0.6V to 3.63V Output  
Data Sheet  
5.  
Typical Performance Characteristics  
5.1 Efficiency Curves  
85  
80  
75  
70  
65  
60  
95  
90  
85  
80  
55  
50  
Vin = 5V  
Vin = 12V  
30  
Vin = 13.8V  
Vin = 10V  
20  
Vin = 12V  
30  
Vin = 13.8V  
40 50  
75  
0
10  
0
10  
20  
40  
50  
Output Current, A  
Output Current, A  
Figure 3. Efficiency vs. Load. Vout=2.5  
Figure 1. Efficiency vs. Load. Vout=0.6V  
95  
90  
85  
80  
90  
85  
80  
75  
70  
65  
Vin = 10V  
20  
Vin = 12V  
30  
Vin = 13.8V  
40  
Vin = 10V  
20  
Vin = 12V  
30  
Vin = 13.8V  
40  
0
10  
50  
0
10  
50  
Output Current, A  
Output Current, A  
Figure 4. Efficiency vs. Load. Vout=3.3V  
Figure 2. Efficiency vs. Load. Vout=1.2V  
ZD-02078 Rev 1.0  
www.power-one.com  
Page 6 of 13  
YV09T50 50A DC-DC POL Converter  
5V to 13.8V Input • 0.6V to 3.63V Output  
Data Sheet  
5.2 Turn-On Characteristics  
Figure 5. Typical Start-Up Using Remote On/Off  
(Vo = 1.2 Vdc, Io=50A). Ch1 – Vout, Ch2 – ON/OFF  
Figure 7. Typical Start-Up with application of Vin  
(Vo = 1.2Vdc, Io = 50A). Ch1 – Vout, Ch2 – Vin  
Figure 6. Typical Start-Up Using Remote On/Off  
(Vo = 3.3 Vdc, Io=50A). Ch1 – Vout, Ch2 – ON/OFF  
Figure 8. Typical Start-Up with application of Vin  
(Vo = 3.3Vdc, Io = 50A). Ch1 – Vout, Ch2 – Vin  
ZD-02078 Rev 1.0  
www.power-one.com  
Page 7 of 13  
YV09T50 50A DC-DC POL Converter  
5V to 13.8V Input • 0.6V to 3.63V Output  
Data Sheet  
5.3 Transient Response  
5.4 Derating Curves  
50  
45  
40  
35  
NC  
100 LFM (0.5 m/s)  
30  
25  
200 LFM (1 m/s)  
300 LFM (1.5 m/s)  
400 LFM (2 m/s)  
20  
30  
40  
50  
60  
70  
Ambient Temperature, C  
Figure 11 Output Current versus Local Ambient  
Temperature and Airflow (Vin = 12.0 Vdc,  
Vo=0.6Vdc)  
50  
45  
40  
Figure 9. Transient Response to Dynamic Load Change  
from 50% to 100% of full load (Vin=12V,  
Vo=0.6Vdc). Ch3 – Iout  
35  
NC  
100 LFM (0.5 m/s)  
30  
25  
200 LFM (1 m/s)  
300 LFM (1.5 m/s)  
400 LFM (2 m/s)  
20  
30  
40  
50  
60  
70  
Ambient Temperature, C  
Figure 12. Output Current versus Local Ambient  
Temperature and Airflow (Vin = 12.0 Vdc,  
Vo=1.2Vdc).  
Figure 10. Transient Response to Dynamic Load Change  
from 50% to 100% of full load (Vin=12V,  
Vo=3.3Vdc). Ch3 – Iout  
ZD-02078 Rev 1.0  
www.power-one.com  
Page 8 of 13  
YV09T50 50A DC-DC POL Converter  
5V to 13.8V Input • 0.6V to 3.63V Output  
Data Sheet  
50  
45  
40  
35  
30  
25  
6. Application Information  
6.1 Input and Output Impedance  
The POL converter should be connected to the DC  
power source via low impedance.  
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.  
Internally, the converter includes 60µF (low ESR  
ceramics) of input capacitance which eliminates the  
need for external input capacitance. However, if the  
distribution of the input voltage to the POL converter  
contains high inductance, it is recommended to add  
a 150µF decoupling capacitor placed as close as  
possible to the converter input pins. A low-ESR  
tantalum or POS capacitor connected across the  
input pins help ensuring stability of the POL  
converter and reduce input ripple voltage.  
NC  
100 LFM (0.5 m/s)  
200 LFM (1 m/s)  
300 LFM (1.5 m/s)  
400 LFM (2 m/s)  
20  
30  
40  
50  
60  
70  
Ambient Temperature, C  
Figure 13 Output Current versus Local Ambient  
Temperature and Airflow (Vin = 12.0 Vdc,  
Vo=1.8Vdc).  
50  
45  
40  
A 470µF POS, tantalum, or ceramic output capacitor  
is recommended to improve output ripple and  
dynamic response.  
It is important to keep low resistance and low  
inductance of PCB traces for connecting load to the  
output pins of the converter in order to maintain good  
load regulation.  
35  
NC  
100 LFM (0.5 m/s)  
30  
25  
200 LFM (1 m/s)  
300 LFM (1.5 m/s)  
400 LFM (2 m/s)  
6.2 Output Voltage Programming  
The output voltage can be programmed from 0.6V to  
3.63V by connecting an external resistor RTRIM  
between Trim+ pin (Pin 8) and Trim- pin (Pin 7), as  
shown in Figure 16.  
20  
30  
40  
50  
60  
70  
Ambient Temperature, C  
Figure 14. Output Current versus Local Ambient  
Temperature and Airflow (Vin = 12.0 Vdc,  
Vo=2.5Vdc).  
11  
SENSE+  
12,13  
50  
45  
40  
VIN  
1,2,3  
YV09T50  
VOUT  
TRIM+  
6
9
8
7
ON/OFF  
Power Good  
GND  
RTRIM  
Rload  
Vin  
TRIM-  
4,5  
10  
GND  
4,5  
SENSE-  
35  
NC  
100 LFM (0.5 m/s)  
30  
25  
200 LFM (1 m/s)  
300 LFM (1.5 m/s)  
400 LFM (2 m/s)  
Figure 16. Programming Output Voltage With A Resistor  
The trim resistor RTRIM for a desired output voltage  
can be calculated using the following equation:  
20  
30  
40  
50  
60  
70  
Ambient Temperature, C  
1.2  
Figure 15. Output Current versus Local Ambient  
Temperature and Airflow (Vin = 12.0 Vdc,  
Vo=3.3Vdc).  
kΩ  
,
RTRIM  
=
VOUT − 0.6  
ZD-02078 Rev 1.0  
www.power-one.com  
Page 9 of 13  
 
YV09T50 50A DC-DC POL Converter  
5V to 13.8V Input • 0.6V to 3.63V Output  
Data Sheet  
where:  
internal 50kꢀ pull-up to 5V supply.  
It is  
recommended to control the ON/OFF pin with an  
open collector transistor or similar device.  
RTRIM = Required value of trim resistor in kΩ  
VOUT = Desired (trimmed) value of output voltage V  
6.4 Remote Sense (Pins 10 and 11)  
If the RTRIM is not used and the Sense+ and Sense-  
pins are shorted to VOUT and GND respectively, the  
output voltage of the POL converter will be 0.6V. No  
capacitor is allowed between Trim+ and Trim- pins.  
The remote sense feature compensates for the  
voltage drop between the output pins of the POL  
converter and the load. The Sense- (Pin 10) and  
Sense+ (Pin 11) pins should be connected at the  
load or at the point where regulation is required  
(refer to Figure 18).  
Note that the trim resistor tolerance directly affects  
the output voltage accuracy. It is recommended to  
use ±0.1% trim resistors to meet the output voltage  
setpoint accuracy specified in p. 4.2.  
If remote sensing is not required, the Sense pins  
must be connected to the VOUT and GND pins  
directly at the output of the POL converter.  
Table 1. Trim Resistor Values  
11  
SENSE+  
12,13  
VIN  
Rw  
Rw  
1,2,3  
Calculated  
Standard Value of  
0.1% Resistor, kΩ  
YV09T50  
VOUT  
V0UT,  
V
RTRIM, kΩ  
6
8
ON/OFF  
Power Good  
GND  
TRIM+  
TRIM-  
Open  
3.0  
2.0  
1.333  
1.0  
0.857  
0.631  
0.444  
0.396  
0.6  
1.0  
1.2  
1.5  
1.8  
2.0  
2.5  
3.3  
Open  
3.01  
2.0  
1.33  
1.0  
0.856  
0.634  
0.442  
0.397  
Rload  
7
Vin  
9
4,5  
GND  
4,5  
10  
SENSE-  
Figure 18. Remote Sense Circuit Configuration  
Because the sense leads carry minimal current,  
large traces on the end-user board are not required.  
The voltage sense traces should be located close to  
a ground plane to minimize system noise.  
3.63  
6.3 ON/OFF (Pin 6)  
When using remote sense, the output voltage at the  
converter can be increased by up to 0.5V in order to  
maintain the required voltage at the load. However,  
the maximum output voltage measured directly  
between the VOUT and GND pins shall not exceed  
3.63V. In addition it is the user’s responsibility to  
ensure the POL converter’s actual output power  
always remains at or below the maximum allowable  
output power obtained from the derating curves.  
The ON/OFF pin is used to turn the POL converter  
ON or OFF remotely by a signal from a system  
controller. For positive logic, the POL converter is  
ON when the ON/OFF pin is at a logic high (2.4V  
min) or left open. The POL converter is OFF when  
the ON/OFF pin is at a logic low (1.2V max) or  
connected to GND.  
The typical connections are shown in Figure 17.  
6.5 Protections  
11  
SENSE+  
12,13  
6
VIN  
1,2,3  
VOUT  
6.5.1  
Power Good  
YV09T50  
8
Power Good pin (Pin 9) is an open drain output,  
capable of sinking up to 4mA. The Power Good pin  
is high when the output voltage is within the  
regulation band. The Power Good pin is at logic low  
during start-up, undervoltage, overvoltage, or  
overcurrent conditions, or when the POL converter is  
disabled via the ON/OFF signal.  
ON  
TRIM+  
TRIM-  
Rload  
7
Vin  
9
Power Good  
GND  
4,5  
GND  
4,5  
10  
SENSE-  
CONTROL  
INPUT  
Figure 17. Circuit Configuration For ON/OFF Function  
6.5.2  
Input Undervoltage Lockout  
The POL converter will shut down when the input  
voltage drops below a predetermined voltage. It will  
The ON/OFF pin is referenced to ground and  
typically has 50kꢀ input impedance. It has an  
ZD-02078 Rev 1.0  
www.power-one.com  
Page 10 of 13  
 
 
YV09T50 50A DC-DC POL Converter  
5V to 13.8V Input • 0.6V to 3.63V Output  
Data Sheet  
start automatically when the input voltage exceeds  
the specified threshold.  
8. Safety  
The YV09T50-0 POL converters do not provide  
isolation from input to output. The input devices  
powering YV09T50-0 must provide relevant isolation  
requirements according to all IEC60950 based  
standards. Nevertheless, if the system using the  
converter needs to receive safety agency approval,  
certain rules must be followed in the design of the  
system. In particular, all of the creepage and  
clearance requirements of the end-use safety  
6.5.3  
The POL converter is protected against overcurrent  
and short circuit conditions. Upon sensing an  
Output Overcurrent Protection  
overcurrent condition, the POL converter will shut  
down. Once the converter has shut down, it will  
attempt to restart nominally every 10 ms with a  
typical 2% duty cycle. The attempted restart will  
continue indefinitely until the overload or short circuit  
condition is removed.  
requirements must be observed.  
These  
requirements are included in UL60950 - CSA60950-  
00 and EN60950, although specific applications may  
have other or additional requirements.  
When the overload or short circuit condition is  
removed, the POL converter will automatically restart  
and Vout will return to its nominal value.  
The YV09T50-0 POL converters have no internal  
fuse. If required, the external fuse needs to be  
provided to protect the converter from catastrophic  
failure. Refer to the “Input Fuse Selection for DC/DC  
converters” application note on www.power-one.com  
for proper selection of the input fuse. Both input  
traces and the chassis ground trace (if applicable)  
must be capable of conducting a current of 1.5 times  
the value of the fuse without opening.  
6.5.4  
Output Overvoltage Protection  
The POL converter is protected against overvoltage  
on the output. If the output voltage is higher than  
125% of its nominal value set by the RTRIM, the high  
side MOSFETs will be immediately turned off and  
the low side MOSFETs will be turned on. The POL  
converter will remain in the state until the output  
voltage reduces below 120% of its nominal value. At  
that point the POL converter will automatically  
restart.  
To comply with safety agencies’ requirements, a  
recognized fuse must be used in series with the input  
line. The fuse must not be placed in the grounded  
input line. Abnormal and component failure tests  
were conducted with the POL input protected by  
three 15A/125VDC fuses connected in parallel. If  
fuses rated greater than 15A are used, additional  
testing may be required.  
6.5.5  
Overtemperature Protection  
The POL converter will shut down under an  
overtemperature 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 POL converter  
has cooled to a safe operating temperature, it will  
automatically restart.  
The maximum DC voltage between any two pins is  
Vin under all operating conditions. In order for the  
output of the YV09T50-0 POL converter to be  
considered as SELV (Safety Extra Low Voltage),  
according to all IEC60950 based standards, the input  
to the POL needs to be supplied by an isolated  
secondary source providing a SELV also.  
7. Characterization  
7.1 Ripple and Noise  
The output voltage ripple and input reflected ripple  
current waveforms are measured using the test  
setup shown in Figure 19.  
iS  
1. µH  
0
source  
inductance  
YV09T50  
100µF  
tantalum  
470µF  
capacitor  
Vout  
+ 47µF  
ceramic  
capacitor  
CIN  
Vsource  
Figure 19. Test Setup For Measuring Input Reflected-Ripple  
Current And Output Voltage Ripple  
ZD-02078 Rev 1.0  
www.power-one.com  
Page 11 of 13  
 
YV09T50 50A DC-DC POL Converter  
5V to 13.8V Input • 0.6V to 3.63V Output  
Data Sheet  
9. Pin Assignments and Description  
Pin  
Name  
Pin  
Pin  
Buffer  
Type  
Pin Description  
Notes  
Number Type  
VOUT  
GND  
1, 2, 3  
4, 5  
6
P
P
I
Output Voltage  
Power Ground  
Enable  
ON/OFF  
PU  
A
Pull high or leave floating to turn ON the POL  
Connect a high accuracy resistor between Trim+  
and Trim- pins to set the output voltage  
Connect a high accuracy resistor between Trim+  
and Trim- pins to set the output voltage  
Open drain pin indicating status of the output  
voltage  
Trim-  
Trim+  
7
8
9
I/O  
I
Output Voltage Trim  
Output Voltage Trim  
Power Good  
A
PwrGood  
I/O  
PU  
Sense-  
Sense+  
VIN  
10  
I
I
A
A
Negative Voltage Sense  
Positive Voltage Sense  
Input Voltage  
Connect to the negative point close to the load  
Connect to the positive point close to the load  
11  
12, 13  
14, 15  
P
Mechanical Support  
Connected to GND inside of the POL converter  
Legend: I=input, O=output, I/O=input/output, P=power, A=analog, PU=internal pull-up  
ZD-02078 Rev 1.0  
www.power-one.com  
Page 12 of 13  
YV09T50 50A DC-DC POL Converter  
5V to 13.8V Input • 0.6V to 3.63V Output  
Data Sheet  
10. Mechanical Drawings  
All Dimensions are in inches  
Tolerances: X.XX: ±0.02” X.XXX: ±0.01”  
Figure 20. Mechanical Drawing  
Figure 21. Recommended Footprint – Top View  
Notes:  
1. NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or authorized for use as critical  
components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written  
consent of the respective divisional president of Power-One, Inc.  
2. 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.  
ZD-02078 Rev 1.0  
www.power-one.com  
Page 13 of 13  
厂商 型号 描述 页数 下载

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