Output Capacitors: The ESR of the required capacitors is less than 100 ml . Electrolytic capacitors have marginal ripple performance at frequencies greater than 400 kHz but excellent low frequency transient response. Above the ripple frequency, ceramic capacitors are necessary to improve the transient response and reduce any high frequency noise components apparent during higher current excursions. Preferred low ESR type capacitor part numbers are identified in Table 2-1.
PAL16L8-7 on stock| vcc | ICon |
| 1 _ __ _______ | 90% |
| | | IC | 10% |
| IBon | - | | - tf f |
| LB 1_(l{l(l(i-'.LJUU . I Lr~ T.U.T. | IB IBon |
| o | / L I \ \-:l/ | |
| -VBB _ 1 I -l- Fig.9. Test circuit inductive load. Vcc = 300 V; -VBE = s v Lc = 200 ccH; LB = 7 ccH | t -- -IBoff Fig. 10. Switching times waveforms with inductive load. |
| lnfns) | tfi(ns) |
| 250 | | | | | | | 250 | | | | | | | | |
| | | | I^ | | | | | | | CiIE1 |
| 225 | | | | | | | 225 200 | | | | | | | |
| 200 175 | | | | j) 7 o | 15A l | 175 150 | | | | | J | | |
| 150 | | | | | | | | -- | < | | | | |
| 125 | l | | | f | | 125 | | | ==]77 | | | _< | |
| 100 75 50 | | / --/ - | j | l | | 100 75 50 | | LJ _ | __-_ | | | |
| 25 | | | | | | 25 | | | | | | |
| 2 4 6 10 11 HFE GAIN {IC/IB; Fig.l l. Inductive switching. tfi = f(hFE) | 08 112 14 16 18 IC COLLECTOR CURRENT/A Fig. 12. Inductive switching. tfi = f(lc) |
| | | | | | | | | | | | | | | | | |
| | E | l |
| | | | =E |
| ] Ta:-25 0C | | Ta:1 25 0C} |
| | | -i~[[[ | Ta:1 50 0C |
| | EE E == | E E --F F | |
| E E | EE L | | |
| | | |
