ELECTRICAL CHARACTERISTICS CURVES
Figure 13: Input Terminal Ripple Current, ic, at full rated output current and nominal input voltage with 12µH source impedance and 33µF electrolytic capacitor (500 mA/div).
Figure 14: Input reflected ripple current, is, through a 12µH source inductor at nominal input voltage and rated load current (5 mA/div).
Copper Strip |
|
|
|
Vo(+) |
|
|
|
10u | 1u | SCOPE | RESISTIVE |
| LOAD | ||
|
|
| |
|
|
|
Figure 15: Output voltage noise and ripple measurement test setup
Figure 16: Output voltage ripple at nominal input voltage and
rated load current (20 mV/div). Load capacitance: 1µF ceramic
capacitor and 10µF tantalum capacitor. Bandwidth: 20 MHz. Scope measurement should be made using a BNC cable (length shorter than 20 inches). Position the load between 51 mm to 76 mm (2 inches to 3 inches) from the module.
6
