Datasheet VIPER17 (STMicroelectronics) - 7

link to page 8 link to page 8 link to page 8
VIPER17 Electrical data Symbol Parameter Test condition Min. Typ. Max. Unit Current
VFB = GND Operating supply current, not FSW = 0 kHz IDD0 0.9 mA switching VBR = GND, VDD = 10 V VDRAIN = 120 V 1.8 mA FSW = 60 kHz IDD1 Operating supply current, switching VDRAIN = 120 V 2 mA FSW = 115 kHz Operating supply current, with IDD_FAULT 400 µA protection tripping Operating supply current with IDD_OFF VDD = 7 V 270 µA VDD < VDD_off
Table 8: Controller section Symbol Parameter Test condition Min. Typ. Max. Unit Feed-back pin
VFBolp Overload shut down threshold 4.5 4.8 5.2 V VFBlin Linear dynamics upper limit 3.2 3.3 3.4 V VFBbm Burst mode threshold Voltage falling 0.4 0.45 0.6 V VFBbmhys Burst mode hysteresis Voltage rising 50 mV VFB = 0.3 V -150 -200 -280 uA IFB Feed-back sourced current 3.3 V < VFB < 4.8 V -3 uA RFB(DYN) Dynamic resistance VFB < 3.3 V 12 19 kΩ HFB ΔVFB / ΔID 3 8 V/A
CONT pin
VCONT_l Low level clamp voltage ICONT = -100 µA 0.5 V VCONT_h High level clamp voltage ICONT = 1 mA 5 5.5 6 V
Current limitation
VFB = 4 V IDlim Max drain current limitation (1) ICONT = -10 µA 0.38 0.4 0.42 A TJ = 25 °C tSS Soft-start time 8.5 ms TON_MIN Minimum turn ON time 220 400 480 ns td Propagation delay (2) 100 ns tLEB Leading edge blanking (2) 300 ns Peak drain current during burst ID_BM VFB = 0.6 V 90 mA mode DocID14419 Rev 11 7/31