In Car Charger for Notebook
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Input Characteristics
- Input Voltage Range 11.5-28 volt
- Max. Input DC Current @11.5 volt, 7 ampere
- Efficiency (normal) 92% min. 13.7 VDC
Output Characteristics z 15V,16V,18V,18.5V,19V,21V
- Static Output Charateristics (Vo)
- Output Power Average: 75 watte
| Output | Load Range | Regulation(V) | |
|---|---|---|---|
| Voltage | MIN. | MAX. | ¡@ |
| 19V | 0.A | 0.A | 19.6V min |
| 19V | 0.A | 4.00A | 18.8V ~ 20V |
Note¡G
A. Ripple & Noise test: Use 20 M Hz bandwidth frequency oscilloscope.
B. Add 0.1uF/47uF capacitors at output connector terminal for Ripple & Noise test.
C. Ripple Noise test condition¡Ginput 13.7 Volt output 4.00A.
D. Ripple with spike noise <= 150 mvp-p
3. Dynamic Output Characteristics
A. Turn ¡V on Delay Time¡G2 sec max. @13.7 VDC
B. Hold-up Time¡G5 ms min. @13.7VDC input, full load.
C. Load Transient Response:
Condition 1¡GOutput voltage within 18.8 ¡V 20 V, for load step 0.316A to 4.0A on the output. S/R=0.05A/uS, 100Hz & 1KHz 50% duty.
Condition 2¡G17V min, for load step 2.5A to 5.4A on the output. S/R=0.05A/us, 100 Hz & 1KHz 20% duty for 5.4A.
D. INPUT OVP¡G28V max.,UVP :11.5 min automatic shut down.
E. Short Circuit Protection¡G Output can be short without damage, and auto recovery.
F. Over Current Protecction¡G Fuse, 5.0 ampere
G. Surge Load¡G 5.4A during 30 mS RISE/FALL slew = 0.1A/uS,
Over Temperature Protection: No Damage¡Fauto recovery or mains power removal reset.
H. Surface Temperature¡G Output 75W and ambient 40¢J¡F Input Surface Temp 75 Deg C max
Copyright (c) 2004 Semdicar Technology
Corporation. All right reserved.