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High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

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Quick Detail

Place of Origin: China

Brand Name: Enargy

Model Number: JS150-24S12-POC

Output Power: 150W

Operating Temperature Range: -20~85℃

Input Voltage Range: 18-36Vdc

Output Voltage: 12Vdc

Efficiency: 88%

Size(L*W*H): 72.1*72.1*9.1mm

 

 

Payment & Shipping Terms

Minimum Order Quantity: 1pcs

Price: Negotiation

Delivery Time: Negotiation

Supply Ability: 1000Pcs/week

 

Key Features

· Output power: 150W

· Wide input range: 18-36Vdc

· High conversion efficiency: 88%

· Line regulation to ±0.5%

· Load regulation to ±0.5%

· Fixed operating frequency

· Isolation voltage :1500V

· Enable (ON/OFF) control

· Output over-load protection

· Hiccup mode short circuit protection

· Over-temperature protection

· Input under-voltage lock-out

· Output voltage trim: ±10%

 

Product Overview

These DC-DC converter modules use advanced power processing, control and packaging technologies to provide the performance, flexibility, reliability and cost effectiveness of a mature power component. High frequency Active Clamp switching provides high power density with low noise and high efficiency.

 

Product’s Introduction

The JS series is an independently regulated single output converter that uses the industry nonstandard brick package size. The very high efficiency is a result of ENARGY CORP patented topology that uses synchronous rectification and an innovative construction design to minimize heat dissipation and allow extremely high power densities. The power dissipated by the converter is so low that a heat sink is not required, which saves cost, weight, height, and application effort. All of the power and control components are mounted to the multi-layer PCB substrate with highyield surface mount technology, resulting in a more reliable product.

 

 

1.Electric Characteristics

Electrical characteristics apply over the full operating range of input voltage, output load and base plate temperature, unless otherwise specified. All temperatures refer to the operating temperature at the center of the base plate. All data testing at Ta=25oC except especial definition.

 

 

1.1Absolute Maximum Ratings

Parameter Min Typ Max Units Notes
Input Voltage     38 Vdc Continuous, non-operating
    36 Vdc Continuous, operating
    38 Vdc Operating transient protection,<100mS
Isolation Voltage     2000 Vdc Input to Output
Operating Temperature -40   100  
Storage Temperature -55   105  
Enable to Vin-Voltage -2.0   10 Vdc  

1.2Input Characteristics

Parameter Min Typ Max Units Notes
Input Voltage Range 18 24 36 Vdc Continuous
Under-Voltage Lockout   16.8 17.8 Vdc Turn-on Threshold
15.3 16.2   Vdc Turn-off Threshold
Maximum Input Current     11 A Full Load;18Vdc Input
Efficiency   88   %

Full load, rating input voltage,

Figures 1-4

Dissipation   3   W Min. Load
Disabled Input Current   10   mA Enable pin low
Recommend External Input Capacitance   100   µF Typical ESR 0.1-0.2Ω

1.3Output Characteristics

Parameter Min Typ Max Units Notes
Output Voltage Set Point 11.88 12.00 12.12 Vdc Nominal input; No load
Output Voltage Range 11.76 12.00 12.24 Vdc  
Output Current Range 0.1   12.5 A Subject to thermal derating; Figures 5-8
Line Regulation   ±0.02 ±0.50 % Low line to high line; full load
Load Regulation   ±0.02 ±0.50 % Min. load to full load; nominal input
Temperature Regulation   ±0.03 ±0.05 % / °C Over operating temperature range
Current Limit 13.75 15 16.3 A Output voltage 95% of nominal
Short Circuit Current 0.1 15 16.3 A Output voltage <250 mV
Ripple (RMS)   20   mV Nominal input; full load; 20 MHz bandwidth; Figure 13
Noise(Peak-to-Peak)   120   mV
Maximum Output Cap.   8000   μF Nominal input; full load
Output Voltage Trim     ±10 % Nominal input; full load;

1.4Dynamic Response Characteristics

Parameter Min Typ Max Units Notes

Change in Output Current

(di/dt= 0.1A/µs)

  360   mV 50% to 75% to 50% Iout max; Figure 11

Change in Output Current

(di/dt= 2.5A/µs)

  480   mV 50% to 75% to 50% Iout max; Figure 12
Settling Time   200   µS To within 1% Vout nom.
Turn-on Time   10   mS Full load; Vout=90% nom. Figure 9
Shut-down Fall Time   300   µS Full load; Vout=10% nom. Figure 10
Output Voltage Overshoot     3 %  

1.5Functional Characteristics

Parameter Min Typ Max Units Notes
Switching Frequency 180 200 220 KHz Regulation stage and Isolation stage
Trim(Pin8) Voltage Trim(Pin8)
Output Voltage Trim     10 % Trim Up, Trim Pin to Vout(-).
10     % Trim Down, Trim Pin to Vout(+).
Enable(ON/OFF)Control(Pin4) See part 7.1

Enable Voltage

Enable Source Current

  5   Vdc Enable pin floating
  1   mA  
Enable (ON/OFF) Control Positive Logic 5   10 Vdc ON-Control, Logic high or floating
-0.5   2.0 Vdc OFF-Control, Logic low
Over-Load Protection 110 120 130 % Current-Mode, Pulse by Pulse Current Limit Threshold,(%Rated Load)
Short-Circuit Protection   80   Type: Hiccup Mode, Non-Latching, Auto-Recovery,Threshold,Short-Circuit Resistance
Over-Temperature Protection   105   Type: Non-Latching, Auto-Recovery;Threshold, PCB Temperature
  15   Hysteresis

1.6Isolation Characteristics

Parameter Min Typ Max Units Notes
Isolation Voltage 1500     Vdc Input to Output
1500     Vdc Input to Base
500     Vdc Output to Base
Isolation Resistance 10     At 500VDC to test it when atmospheric pressure and R.H. is 90%
Isolation Capacitance   1000   pF  

2. General Characteristics

Parameter Min Typ Max Units Notes
Weight   3.5(99)   Oz (g) Open Frame
MTBF ( calculated ) 1     MHrs TR-NWT-000332; 80% load,300LFM, 40℃ Ta

3.Environmental Characteristics

Parameter Min Typ Max Units Notes
Operating Temperature -40   +100 Extended, base PCB temperature
Storage Temperature -55   +105 Ambient
Temperature Coefficient     ±0.05 %/℃  
Humidity 20   95 %R.H. Relative Humidity, Non - Condensing

4.Standards Compliance

Parameter Notes
UL/cUL60950  
EN60950  
GB4943  
Needle Flame Test (IEC 695-2-2) Test on entire assembly; board & plastic components UL94V-0 compliant
IEC 61000-4-2  

5.Qualification Specification

Parameter Notes
Vibration 10-55Hz sweep, 1 min./sweep, 120 sweeps for 3 axis
Mechanical Shock 100g min, 2 drops in x and y axis, 1 drop in z axis
Cold(in operation) IEC60068-2-1 Ad
Damp heat IEC60068-2-67 Cy
Temperature Cycling -40°C to 100°C, ramp 15°C/min., 500 cycles
Power/Thermal Cycling Vin = min to max, full load, 100 cycles
Design Marginality Tmin-10°C to Tmax+10°C, 5°C steps, Vin = min to max, 0-105% load
Life Test 95% rated Vin and load, units at derating point, 1000 hours
Solderability IEC60068-2-20

6.Typical Wave And Curves

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

 

 

 

 

Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C.

 

 

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

 

 

Figure 2: Efficiency at nominal output voltage and 60% rated power vs. airflow rate for ambient air temperatures of 25°C ,40°C and55°C (nominal input voltage).

 

 

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

Figure 3: Power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C.

 

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

 

Figure 4: Power dissipation at nominal output voltage and 60% rated power vs. airflow rate for ambient air temperatures of 25°C, 40°C, and 55°C (nominal input voltage).

 

 

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

 

Figure 5: Maximum output power derating curves vs. ambient air temperature for airflow rates of 0 LFM through 400 LFM with air flowing from pin 1 to pin 5 (nominal input voltage).

 

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

 

Figure 6: Thermal plot of converter at full load current (150W) with 25°C air flowing at the rate of 100 LFM. Air is flowing across the converter from pin 1 to pin 5 (nominal input voltage).

 

 

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

 

Figure 7: 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 (nominal input voltage).

 

 

 

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

 

Figure 8: Thermal plot of converter at full load current (150W) with 25°C air flowing at the rate of 100 LFM. Air is flowing across the converter from input to output (nominal input voltage)

 

 

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

 

 

Figure 9: Turn-on transient at full load (resistive load) (20 ms/div).Input voltage pre-applied.

Ch 1: Vout (5V/div).Ch 2: ON/OFF input(5V/div)

 

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

 

Figure 10: Shut-down fall time at full load (400 µs/div).

Ch 1: Vout (5V/div).Ch 2: ON/OFF input (5V/div).

 

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

 

Figure 11: Output voltage response to step-change in load current (50%-75%-50% of Iout(max); dI/dt = 0.1A/μs). Load cap: 10μF, 100 mΩ ESR tantalum capacitor and 1μF ceramic capacitor. Ch 1: Vout (100mV/div).

 

 

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

 

Figure 12: Output voltage response to step-change in load current (50%-75%-50% of Iout(max): dI/dt = 2.5A/μs). Load cap: 470μF, 30 mΩ ESR tantalum capacitor and 1μF ceramic cap. Ch 1: Vout (100mV/div).

 

 

Figure 13: Output voltage ripple at nominal input voltage and rated load current (100mV/div). Load capacitance: 1μF ceramic capacitor and 10μF tantalum capacitor. Bandwidth: 20 MHz.

 

7.Function Specifications

7.1Enable (ON/OFF) Control (Pin 4)

The Enable pin allows the power module to be switched on and off electronically. The Enable (ON/OFF) function is useful for conserving battery power, for pulsed power application or for power up sequencing.

The Enable pin is referenced to the -Vin. It is pulled up internally, so no external voltage source is required. An open collector (or open drain) switch is recommended for the control of the Enable pin.

When using the Enable pin, make sure that the reference is really the -Vin pin, not ahead of EMI filtering or remotely from the unit. Optically coupling the control signal and locating the opto coupler directly at the module will avoid any of these problems. If the Enable pin is not used, it can be left floating (positive logic) or connected to the -Vin pin (negative logic).Figure A details five possible circuits for driving the ON/OFF pin. Figure B is a detailed look of the internal ON/OFF circuitry.

 

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

7.2Protection Features

·Input Under-Voltage Lockout: The converter is designed to turn off when the input voltage is too low, helping avoid an input system instability problem, The lockout circuitry is a comparator with DC hysteresis. When the input voltage is rising, it must exceed the typical Turn-On Voltage Threshold value(listed on the specification page) before the converter will turn on. Once the converter is on, the input voltage must fall below the typical Turn-Off Voltage Threshold value before the converter will turn off.

·Output Current Limit: The maximum current limit remains constant as the output voltage drops. However, once the impedance of the short across the output is small enough to make the output voltage drop below the specified Output DC Current-Limit Shutdown Voltage, the converter into hiccup mode indefinite short circuit protection state until the short circuit condition is removed. This prevents excessive heating of the converter or the load board.

·Over-Temperature Shutdown: A temperature sensor on the converter senses the average temperature of the module. The thermal shutdown circuit is designed to turn the converter off when the temperature at the sensed location reaches the Over-Temperature Shutdown value. It will allow the converter to turn on again when the temperature of the sensed location falls by the amount of the Over-Temperature Shutdown Restart Hysteresis value.

7.3Typical Application Circuit

 

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

8.Test Method

8.1Output Ripple & Noise Test

The output ripple is composed of fundamental frequency ripple and high frequency switching noise spikes. The fundamental switching frequency ripple (or basic ripple) is in the 100KHz to 1MHz range; the high frequency switching noise spike (or switching noise) is in the 10 MHz to 50MHz range. The switching noise is normally specified with 20 MHz bandwidth to include all significant harmonics for the noise spikes.

The easiest way to measure the output ripple and noise is to use an oscilloscope probe tip and ground ring pressed directly against the power converter output pins, as shown below. This makes the shortest possible connection across the output terminals. The oscilloscope probe ground clip should never be used in the ripple and noise measurement. The ground clip will not only act as an antenna and pickup the radiated high frequency energy, but it will introduce the common-mode noise to the measurement as well.

The standard test setup for ripple & noise measurements is shown in Figure D. A probe socket (Tektronix, P.N. 131.0258-00) is used for the measurements to eliminate noise pickup associated with long ground clip of scope probes.

 

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

 

 

 

 

 

 

9.Physical Information

9.1Mechanical Outline

High Efficiency Railway Power Supply dc-dc converter module Isolation JS150-24S12-POC

 

 

 

 

 

Notes:

1. Pins 3 are 0.040” (1.02mm) dia.

2. All other pins are 0.060” (1.52mm) dia.

3. Tolerances: x.xx±0.02 in. (x.x±0.5mm)

                       x.xxx±0.010 in. (x.xx±0.25mm)

 

9.2Pin Designations 

Pin No. Name Function
1 Vin(+) Positive input voltage 
2 Vin(+) Positive input voltage 
3 Enable TTL input to turn converter ON and OFF, referenced to Vin(-), with internal pull up.
4 Vin(-) Negative input voltage
5 Vin(-) Negative input voltage
6 Vout(-) Negative output voltage
7 Vout(+) Positive output voltage
8 Trim Output voltage trim. Leave TRIM pin open for nominal output voltage.

 

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