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具体型号和参数如下:
PHZC25NRA-G
Ta=25℃,airflow rate=300 LFM,Vin=48V dc | |||||
Parameter | Min | Typ | Max | Units | Notes&Conditions |
ABSOLUTE MAXIMUM RATINGS | |||||
Input Voltage | |||||
Non-Operating | -1 | 100 | V | Continuous | |
Operating | 80 | V | Continuous | ||
Operating Transient Protection | 100 | V | 1 s transient,square wave | ||
Isolation Voltage | |||||
Input to Output | 2250 | V | |||
Operating Temperature | -40 | 100 | ℃ | ||
Storage Temperature | -45 | 125 | ℃ | ||
Voltage at ON/OFF input pin | -2 | 18 | V | ||
INPUT CHARACTERISTICS | |||||
Operating Input Voltage Range | 35 | 48 | 75 | V | |
Input Under-Voltage Lockout | |||||
Turn-On Voltage Threshold | 32 | 33 | 34 | V | |
Turn-off Voltage Threshold | 30 | 31 | 32 | V | |
Lockout Voltage Hysteresis | 1.5 | 2 | 2.5 | V | |
Maximum Input Current | 21 | A | ** Load,35V Vin,trimmed up 10% | ||
No-Load Input Current | 200 | 250 | mA | ||
Disabled Input Current(Option N) | 5 | 8 | mA | ||
Disabled Input Current(Option P) | 20 | 30 | 40 | mA | |
Response to Input Transient | 4.5 | V | 0.5V/µs input transient,full load,100µF load cap | ||
Input Reflected Ripple Current | 30 | mA | RMS thru 4.7µH inductor | ||
Input Terminal Ripple Current | 150 | mA | RMS | ||
Recommended Input Fuse | 40 | A | Fast acting external fuse recommended | ||
Recommended External Input Capacitance | 220 | µF | Typical ESR 0.1-0.2Ω;Fiqure 13 | ||
Input Filter Component Values(C1\LIN\C2) | 22\0.75\11 | µF\µH\µF | Intemal values | ||
OUTPUT CHARACTERISTICS | |||||
Output Voltage Set Point | 23.6 | 24 | 24.34 | V | |
Output Voltage Regulation | |||||
Over Line | ±0.25 | % | See Note 1 | ||
Over Load | ±0.25 | % | See Note 1 | ||
Over Temperature | -312 | 312 | mV | ||
Total Output Voltage Range | 23.28 | 24.72 | V | Over sample,line,load,temperature&life | |
Output Voltage Ripple and Noise | 20MHz bandwidth;See Note 2 | ||||
Peak-to-Peak | 280 | 560 | mv | Full load | |
RMS | 65 | 130 | mv | Full load | |
Operating Output Current Range | 0 | 25 | A | Subject to thermal derating | |
Output DC Current-Limit Inception | 27.5 | 30 | 32.5 | A | Output Voltage 10% Low |
Output DC Current-Limit Shutdown Voltage | 9.6 | V | See note 3 | ||
Back-Drive Current Limit while Enabled | 8 | A | Negative current drawn from output | ||
Back-Drive Current Limit while Disabled | 0 | 3 | 5 | mA | Negative current drawn from output |
Maximum Output Capacitance Electrolytic | 6000 | Mf | Nominal Vout at full load(resistive load) | ||
EFFICIENCY | |||||
** Load | 94 | % | Figures 1-2 | ||
50% Load | 95 | % | Figures 1-2 | ||
DYNAMIC CHARACTERISTICS | |||||
Output Voltage during Load Current Transient | |||||
Step Change in Output Current(0.1A/µs) | 800 | mV | 50%to75%to50% Iout max,15µF load cap | ||
Step Change in Output Current(2A/µs) | 1.5 | V | 50%to75%to50% Iout max,15µF load cap | ||
Settling time | 500 | µs | To within 1% Vout nom | ||
Turn-On Transient | |||||
Turn-On Time | 15 | 25 | 35 | ms | Vout=90% nom,Figures 9 & 10;see note 5 |
Output Voltage Overshoot | 2 | % | |||
ISOLATION CHARACTERISTICS | |||||
Isolation Voltage(dielectic strength) | 2250 | V | See Absolute Maximum Ratings | ||
Isolation Resistance | 30 | MΩ | |||
Isolation Capacitance(input to output) | 1000 | pF | See Note 4 | ||
TEMPERATURE LIMITS FOR POWER DERATING CURVES | |||||
Semiconductor Junction Temperature | 125 | ℃ | Package rated to 150℃ | ||
Board Temperature | 125 | ℃ | UL rated max operating temp 130℃ | ||
Transformer Temperature | 125 | ℃ | |||
FEATURE CHARACTERISTICS | |||||
Switching Frequency Regulation Stage | 230 | 240 | 250 | kHz | |
Switching Frequency Isolation Stage | 115 | 120 | 125 | kHz | |
ON/OFF Control(Option P) | |||||
Off-State Voltage | -2 | 0.8 | V | ||
On-Srate Voltage | 2.4 | 18 | V | ||
ON/OFF Control(Option N) | |||||
Off-State Voltage | 2.4 | 18 | V | ||
On-Srate Voltage | -2 | 0.8 | |||
ON/OFF Control(Either Option) | Application notes;Figure A & B | ||||
Pull-Up Voltage | 15 | 18 | V | ||
Pull-Up Resistance | 49.9 | KΩ | |||
Output Voltage Trim Range | -50 | 10 | % | Measured across Pins 8 &6;Figure C | |
Output Over-Voltage Protection | 118 | 123 | 128 | % | Over Full Temperature Range;% of nominial Vout |
Over-Temperature Shutdown | 125 | ℃ | Average PCB Temperature | ||
Over-Temperature Shutdown Restart Hysteresis | 10 | ℃ | |||
RELIABILITY CHARACTERISTICS | |||||
Calculated MTBF(Telcordia) | 2.1 | 106Hrs | TR-NWT-000332;80% load,300LFM,40℃ Ta | ||
Calculated MTBF(MIL-217) | 1.9 | 106Hrs | MIL-HDBK-217F;80% load,300LFM,40℃ Ta | ||
Field Demonstrated MTBF | 106Hrs | See our website for details |