24v to 5v dc-dc converter / power supply for military WZ10
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DC-DC Converters 100W Output 5V WZ100-28S5-PEM
Key Features
Output Power: 100W
Wide Input Range: 18~36Vdc
High Conversion Efficiency: Up to 92%
Line Regulation to ±1%
Load Regulation to ±1%
Input Under-voltage Lock-out
Output Voltage Trim: ±8% Vout
Output Over-Current Protection
Output Over- Voltage Protection
Hiccup Mode Short Circuit Protection
Isolation Voltage :1500V
Enable (ON/OFF) control
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.
1. Electric Characteristics
1.1 Absolute Maximum Ratings
| Parameter | Min | Typ | Max | Units | Notes |
| Input Voltage | 45 | Vdc | Continuous, non-operating | ||
| 40 | Vdc | Continuous, operating | |||
| 45 | Vdc | Operating transient protection,<100mS | |||
| Isolation Voltage | 2000 | Vdc | Input to Output | ||
| Operating Temperature | -55 | 100 | ℃ | PCB Temperature | |
| Storage Temperature | -65 | 115 | ℃ | ||
| Enable to -Vin Voltage | -0.5 | 10 | Vdc |
1.2 Input Characteristics
| Parameter | Min | Typ | Max | Units | Notes |
| Input Voltage Range | 18 | 28 | 36 | Vdc | |
| Under-Voltage Lockout | 17.5 | 17.9 | Vdc | Recovery point | |
| 15.5 | 16.5 | Vdc | Protect point | ||
| Maximum Input Current | 6.8 | A | Vin min,Output full load | ||
| Efficiency | % | Rated input;Rated load | |||
| Dissipation,Standby | 5 | 11 | W | No Load | |
| External Inpu | 100 | μF |
1.3 Output Characteristics
| Parameter | Min | Typ | Max | Units | Notes |
| Output Voltage Set point | 4.95 | 5.00 | 5.05 | Vdc | Rated input voltage,No load |
| Output Voltage Range | 4.90 | 5.00 | 5.10 | Vdc | Rated input voltage, load |
| Line Regulation | ±0.50 | ±1.0 | % | ||
| Current Limit | 22 | 24 | 26 | A | Output voltage 95% of nominal |
| Short Circuit Current | 26 | A | |||
| Ripple (RMS) | 50 | mV | Nominal input; full load; 20 MHz bandwidth. | ||
| Noise(Peak-to-Peak) | 85 | mV | |||
| Capacitive load from themachine | 6000 | μF | |||
| External Output | 300 | μF |
1.4 Dynamic Response Characteristics
| Parameter | Min | Typ | Max | Units | Notes |
| Change In Output Current | 230 | mV | 50% to 75% to 50% Iout max; (di/dt= 0.1A/µs) | ||
| 250 | mV | 50% to 75% to 50% Iout max; (di/dt= 2.5A/µs) | |||
| Dynamic recovery time | 300 | μS | |||
| Turn-on Time | 100 | mS | Starting from vin to vout rise to 90% | ||
| Turn-off overshoot | 5 | % |
1.5 Functional Characteristics
| Parameter | Min | Typ | Max | Units | Notes |
| Switching Frequency | 200 | 230 | 250 | KHz | |
| Output Trim | 8 | % Vout | Trim Up | ||
| 8 | Trim Down | ||||
| Enable Current | 10 | mA | |||
| Enable (ON/OFF) | 3.5 | 10 | Vdc | ON-control, Logic high or floating | |
| -0.5 | 0.5 | Vdc | OFF-control, Logic low | ||
| Over-Load Protection | 105 | 120 | 130 | % | Current mode,Pulse current(100% rared load) |
| Short circuit protection | 65 | mΩ | Hiccup mode,since the recovery | ||
| Over- Temperature Protection | 105 | ℃ | Protect point,In view of PCB Temperature | ||
| 90 | ℃ | Recovery point |
1.6 Isolation Characteristics
| Parameter | Min | Typ | Max | Units | Notes |
| Isolation Voltage | 1500 | Vdc | Input to Output | ||
| Isolation Resistance | 100 | MΩ | 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 | 2.5(72) | Oz (g) | |||
| MTBF ( Calculated ) | 1 | MHrs | TR-NWT-000332; 80% load,300LFM, 40℃ Ta |
3. Environmental Characteristics
| Parameter | Min | Typ | Max | Units | Notes |
| Operating Temperature | -55 | 100 | ℃ | Base PCB temperature | |
| Storage Temperature | -65 | 115 | ℃ | Ambient | |
| Temperature Coefficient | ±0.02 | %/℃ | |||
| Humidity | 20 | 95 | %R.H. |
4. Standards Compliance
| Parameter | Notes |
| MIL-STD-704 | |
| MIL-STD-1399 | |
| MIL-STD-810 | |
| UL/CUL60950 | |
| EN60950 | |
| GB4943 | |
| IEC 61000-4-2 |
5. Typical Wave And Curve
Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C.
Figure 2: Efficiency 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 voltag
Figure 3: Maximum output power derating curves vs. ambient air temperature for airflow rates of 0 LFM through 400 LFM with air flowing from pin 3 to pin 1 (nominal input voltage).
Figure 4: Output voltage ripple at nominal input voltage and rated load current (20 mV/div). Load capacitance: 0.1μF ceramic capacitor and 10μF tantalum capacitor. Bandwidth: 20 MHz.
Figure 7: Turn-on transient at full load (resistive load) (100ms/div).Input voltage pre-applied. Ch1:Vout (10V/div);Ch2:ON/OFF Input (2V/div)
Figure 8: Shut-down fall time at full load (100 ms/div). Ch1:Vout (10V/div);Ch2:ON/OFF Input (2V/div)
6. Physical Information
6.1 Mechanical Outline
Notes:
1. Pins 4, 8 are 1.52mm dia.
2. Other pin diameter are 1.02mm dia.
3. Tolerances: x.x ±0.5mm.x.xx ±0.25mm
6.2 Pin Designations
| Pin No. | Name | Function |
| 1 | Vin(+) | Positive input voltage |
| 2 | Enable | TTL input to turn converter on and off, referenced to Vin(-), with internal pull up. |
| 3 | Vin(-) | Negative input voltage |
| 4 | Vout(-) | Negative output voltage |
| 5 | Sense(-) | Negative remote sense. Sense(-) may be connected to Vout(-) or left open. |
| 6 | Trim | Output voltage trim. Leave Trim pin open for nominal output voltage. |
| 7 | Sense(+) | Positive remote sense. Sense(+) may be connected to Vout(+) or left open. |
| 8 | Vout(+) | Positive output voltage |
