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ZHCS360F July 2012 – November 2020 TPS54020

PRODUCTION DATA

封裝選項

機械數據 (封裝 | 引腳)

RUW|15
- MPQF246

散熱焊盤機械數據 (封裝 | 引腳)

RUW|15
- QFND244B

訂購信息

7.5 Electrical Characteristics

T_J = –40°C to +150°C, V_IN = 4.5 V to 17 V, P_VIN = 4.5 V to 17 V (unless otherwise noted)

PARAMETER		CONDITIONS	MIN	TYP	MAX	UNIT
SUPPLY VOLTAGE (VIN AND PVIN PINS)
	PVIN operating input voltage		1.6		17	V
	VIN operating input voltage		4.5		17	V
	VIN internal UVLO threshold	VIN Rising		4	4.5	V
	VIN internal UVLO hysteresis			150		mV
	VIN shutdown supply current	V_EN = 0 V		2	10	μA
	VIN operating – nonswitching supply current	V_VSENSE = 610 mV		600	1000	μA
ENABLE AND UVLO (EN PIN)
V_EN	Enable threshold	Rising		1.22	1.26	V
V_EN	Enable threshold	Falling	1.10	1.17		V
I_P	Input current V_EN below threshold	V_EN = 1.1 V		–1.15		μA
I_H	Added hysteresis current V_EN above threshold	V_EN = 1.3 V		–3.3		μA
VOLTAGE REFERENCE
V_REF	Voltage reference	0 A ≤ I_OUT ≤ 10 A, –40°C ≤ T_A ≤ 150°C	0.594	0.6	0.606	V
MOSFET
DRVH	High-side switch resistance	BOOT-PH = 3 V		9.5	18	mΩ
DRVH	High-side switch resistance	BOOT-PH = 6 V⁽¹⁾		8	14	mΩ
DRVL	Low-side switch resistance⁽¹⁾	V_VIN = 12 V		6	11	mΩ
ERROR AMPLIFIER
	Error amplifier input bias current	V_VIN = 12 V		50		nA
g_M	Error amplifier transconductance	–2 μA < I_COMP < 2 μA, V_COMP = 1 V		1300		μS
	Error amplifier dc gain	V_VSENSE = 0.6 V		3000		V/V
	Error amplifier source/sink	V_COMP = 1 V, 100 mV Overdrive		±100		μA
	Start switching threshold	V_COMP		0.27		V
g_M	COMP to I_SWITCH transconductance	I_ILIM = NC		20		A/V
		I_ILIM = RTN		17
		499 kΩ (1%) between ILIM and RTN		13
CURRENT LIMIT
	High-side switch current limit threshold	I_ILIM = NC	13.4	15.1	16.5	A
	High-side switch current limit threshold	I_ILIM = RTN	11.2	12.75	14	A
	High-side switch current limit threshold	499 kΩ (1%) between ILIM and RTN	8.3	9.4	10.2	A
	Low-side switch sourcing current limit	I_ILIM = NC	11	13	15	A
	Low-side switch sourcing current limit	I_ILIM = RTN	9	10.5	12	A
	Low-side switch sourcing current limit	499 kΩ (1%) between ILIM and RTN	6.5	8	9.5	A
	Low-side switch sinking current limit	–ve current denotes current sourced from PH pin		–0.2	–1.15	A
	Overcurrent protection scheme	(HICCUP = RTN)		Cycle-by-cycle
	Hiccup delay before re-start	HICCUP OPEN		16384		Cycles
	Hiccup wait time	HICCUP OPEN		128		Cycles
THERMAL SHUTDOWN
	Thermal shutdown			175		°C
	Thermal shutdown hysteresis			10		°C
	Thermal shutdown hiccup time			16384		Cycles
TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK PIN)
	Switching frequency	R_RT/CLK = 250 kΩ (1%)	185	205	230	kHz
		R_RT/CLK = 100 kΩ (1%)	475	500	525
		R_RT/CLK = 50 kΩ (1%)	890	990	1090
	Minimum CLK pulse width			20		ns
	RT/CLK high threshold				2	V
	RT/CLK low threshold		0.8			V
	RT/CLK falling edge to PH rising edge delay	Measure at 500 kHz with RT resistor in series		66		ns
	PLL frequency range		200		1200	kHz
SYNC_OUT (SYNC_OUT PIN)
	Phase with RT/CLK			180		Degree
	SYNC_OUT low threshold				0.8	V
	SYNC_OUT high threshold		2			V
PH (PH PIN)
t_ON(min)	Minimum on-time	Measured at 90% to 90% of VIN, I_PH = 2 A		112	165	ns
I_PH(LK)	PH leakage current	V_VIN = 17 V, V_OUT = 0.6 V, T_A = 150°C		300		μA
BOOT (BOOT PIN)
	BOOT-PH UVLO			2.1	3	V
SOFT START AND TRACKING (SS/TR PIN)
I_SS	Soft-start charge current		2.1	2.3	2.5	μA
	SS/TR to VSENSE matching	V_SS/TR = 0.4 V		22	45	mV
POWER GOOD (PWRGD PIN)
	VSENSE threshold	V_VSENSE falling (Fault)		91		%V_REF
		V_VSENSE rising (Good)		95
		V_VSENSE rising (Fault)		108
		V_VSENSE falling (Good)		104
	Output high leakage	V_VSENSE = VREF, V_PWRGD = 5.5 V		3	100	nA
	Output low	I_PWRGD = 2 mA			0.3	V
	Minimum input voltage for valid output	V_PWRGD < 0.5 V at 100 μA		0.6	1	V
	Minimum soft-start voltage for valid PWRGD				1.4	V

(1) Measured at pins.