JAJSC25 データシート

JAJSC25I March 2014 – July 2019 TPS23861

PRODUCTION DATA.

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）

PW|28
- MPDS364

サーマルパッド・メカニカル・データ

発注情報

7.7 Switching Characteristics

–40 ≤ T_J ≤ +125°C, V_VDD = 3.3 V, V_VPWR = 48 V, V_DGND = V_AGND, DGND, KSENSA and KSENSB connected to AGND, and all outputs are unloaded, PoEPn = 0, Positive currents are into pins, R_S = 0.255 Ω, to KSENSA (SEN1 or SEN2) or to KSENSB (SEN3 or SEN4), R_SENS = 22 Ω, R_DRAIN = 47 Ω, typical values are at 25°C. All voltages are with respect to AGND, operating registers loaded with default values (unless otherwise noted)

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
δIfault	Duty cycle of I_PORT with current fault		5.5%		6.7%
t_OVLD	I_CUT time limit	TICUT = 00, default as supplied	50		70	ms
		TICUT = 01	25		35	ms
		TICUT = 10	100		140	ms
		TICUT = 11	200		280	ms
t_LIM	ILIM time limit	POEPn = 0, default as supplied	50		70	ms
		POEPn = 1, TLIM = 00	50		70	ms
		POEPn = 1, TLIM = 01	28.4	30	34	ms
		POEPn = 1, TLIM = 10	14.7	15.5	17	ms
		POEPn = 1, TLIM = 11	9.025		11.5	ms
t_START	Maximum current limit duration in port start-up	TSTART = 00, default as supplied	50		70	ms
		TSTART = 01	25		35	ms
		TSTART = 10	100		140	ms
t_DET	Four-point detection duration	Time to complete a detection	275		500	ms
t_{DET_BOFF}	Pause between detection attempts	V_VPWR – V_DRAINn > 2.5 V	300	400	500	ms
t_{DET_BOFF}	Pause between detection attempts	V_VPWR – V_DRAINn < 2.5 V	0		150	ms
t_CLE	Classification duration	1st and 2nd class event, Auto Mode, Semi-Auto Mode, from detection complete	6.5		13	ms
t_pdc	Classification duration	1-event physical layer class timing, Auto Mode and Semi-Auto Mode, from detection complete	6.5		13	ms
t_pdc	Classification duration	Manual mode, from beginning of classification	6.5		14	ms
t_ME	Mark duration	1st and 2nd mark event, from class 4 complete	6		12	ms
t_p(on)	Port power-on delay	Manual mode, from port turn-on command to port turn on completed			4	ms
t_ed	Fault delay timing. Delay before next attempt to power a port following power removal due to fault condition	ICUT , ILIM or start fault, Auto Mode, Semi-Auto Mode, CLDN = 0X, default as supplied	0.8	1	1.2	s
		ICUT , ILIM or start fault, Auto Mode, Semi-Auto Mode, CLDN = 10	1.6	2	2.4	s
		ICUT , ILIM or start fault, Auto Mode, Semi-Auto Mode, CLDN = 11	3.2	4	4.8	s
t_MPDO	PD maintain power signature dropout time limit	TDIS = 00, default as supplied	300		400	ms
		TDIS = 01	75		100	ms
		TDIS = 10	150		200	ms
		TDIS = 11	600		800	ms
t_{D_off_SHDWN}	Gate turn-off time from SHTDWN input	From SHTDWN to V_GATEn < 1 V, V_SENn = 0 V	1		5	µs
t_{P_off_CMD}	Gate turn-off time from port off command	From port off command to V_GATEn < 1 V, V_SENn = 0 V			900	µs
t_{P_off_RST}	Gate turn-off time with RESET pin	From RESET low to, V_GATEn < 1 V, V_SENn = 0 V	1		5	µs
t_{D_off_SEN}	Gate turn-off time from SENn input	POEPn = 0, V_DRAINn = 1 V , from V_SENn pulsed to 0.425 V			0.9	µs
t_{D_off_SEN}	Gate turn-off time from SENn input	POEPn = 1, V_DRAINn = 1 V , from V_SENn pulsed to 0.62 V			0.9	µs
t_POR	Device power-on-reset delay				23	ms
t_RESET	Reset time duration from RESET pin		1		5	µs

Figure 2. Overcurrent Fault Timing

Figure 3. Detection, 1-Event Classification, and Turn On

Figure 4. Detection, 2-Event Classification, and Turn On

For more information refer to the application note, TPS23861 Power-On Considerations, SLVA723.

Figure 5. VDD Power-On-Reset

For more information refer to the application note, TPS23861 Power-On Considerations, SLVA723.

Figure 6. VPWR Power-On-Reset