米6体育平台手机版

ZHCSAK8J December 2003 – June 2022 TPS40054 , TPS40055 , TPS40057

PRODUCTION DATA

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)

PWP|16

散热焊盘机械数据 (封装 | 引脚)

订购信息

6.4 Electrical Characteristics

T_A = –40°C to 85°C, V_IN = 24 V_dc, R_T = 90.9 kΩ, I_KFF = 150 µA, f_SW = 500 kHz, all parameters at zero power dissipation (unless otherwise noted)

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
INPUT SUPPLY
V_IN	Input voltage range, VIN		8		40	V
OPERATING CURRENT
I_DD	Quiescent current	Output drivers not switching, V_FB ≥ 0.75 V		1.5	3	mA
BP5
V_BP5	Output voltage	I_O ≤ 1 mA	4.7	5	5.2	V
OSCILLATOR/RAMP GENERATOR
f_OSC	Accuracy	8 V ≤ V_IN ≤ 40 V	470	520	570	kHz
V_RAMP	PWM ramp voltage⁽¹⁾	V_PEAK – V_VAL		2		V
V_IH	High-level input voltage, SYNC		2			V
V_IL	Low-level input voltage, SYNC				0.8	V
I_SYNC	Input current, SYNC			5	10	µA
	Pulse width, SYNC		50			ns
V_RT	RT voltage		2.38	2.5	2.58	V
D_MAX	Maximum duty cycle	V_FB = 0 V, f_SW ≤ 500 kHz	85%		94%
D_MAX	Maximum duty cycle	V_FB = 0 V, 500 kHz ≤ f_SW ≤ 1 MHz⁽¹⁾	80%
	Minimum duty cycle	V_FB ≥ 0.75 V			0%
V_KFF	Feed-forward voltage		3.35	3.48	3.65	V
I_KFF	Feedforward current operating range⁽¹⁾ ⁽²⁾		20		1100	µA
SOFT START
I_SS/SD	Soft-start source current		1.65	2.35	2.95	µA
V_SS/SD	Soft-start clamp voltage			3.7		V
t_DSCH	Discharge time	C_SS/SD = 220 pF	1.6	2.2	2.8	µs
t_SS/SD	Soft-start time	C_SS/SD = 220 pF, 0 V ≤ V_SS/SD ≤ 1.6 V	115	150	215	µs
BP10
V_BP10	Output voltage	I_O ≤ 1 mA	9	9.6	10.3	V
ERROR AMPLIFIER
V_FB	Feedback input voltage	8 V ≤ V_IN ≤ 40 V, T_A = 25°C	0.698	0.7	0.704	V
		8 V ≤ V_IN ≤ 40 V, 0°C ≤ T_A ≤ 85°C	0.693	0.7	0.707
		8 V ≤ V_IN ≤ 40 V, -40°C≤ T_A ≤ 85°C	0.693	0.7	0.715
G_BW	Gain bandwidth⁽¹⁾		3	5		MHz
A_VOL	Open loop gain		60	80		dB
I_OH	High-level output source current		2	4		mA
I_OL	Low-level output sink current		2	4		mA
V_OH	High-level output voltage	I_SOURCE = 500 µA	3.2	3.5		V
V_OL	Low-level output voltage	I_SINK = 500 µA		0.2	0.35	V
I_BIAS	Input bias current	V_FB = 0.7 V		100	200	nA
CURRENT LIMIT
I_SINK	Current limit sink current		8.5	10	11.5	µA
	Propagation delay to output	V_ILIM = 23.7 V, V_SW = (V_ILIM – 0.5 V)		300		ns
	Propagation delay to output	V_ILIM = 23.7 V, V_SW = (V_ILIM – 2 V)		200
t_ON	Switch leading-edge blanking pulse time⁽¹⁾		100
t_OFF	Off time during a fault (soft-start cycle time)			7		cycles
V_OS	Offset voltage SW versus ILIM	T_A = 25°C	–90	–70	–50	mV
		V_ILIM = 23.6 V, 0°C ≤ T_A ≤ 85°C	–120		–38
		V_ILIM = 23.6 V, -40°C ≤ T_A ≤ 85°C	–120		–20
OUTPUT DRIVER
t_LRISE	Low-side driver rise time	C_LOAD = 2200 pF		48	96	ns
t_LFALL	Low-side driver fall time	C_LOAD = 2200 pF		24	48
t_HRISE	High-side driver rise time	C_LOAD = 2200 pF (HDRV – SW)		48	96
t_HFALL	High-side driver fall time	C_LOAD = 2200 pF (HDRV – SW)		36	72
V_OH	High-level output voltage, HDRV	I_HDRV = –0.1 A (HDRV – SW)	V_BOOST –1.5 V	V_BOOST –1 V		V
V_OL	Low-level ouput voltage, HDRV	I_HDRV = 0.1 A (HDRV – SW)			0.75
V_OH	High-level ouput voltage, LDRV	I_LDRV = –0.1 A	V_BP10 –1.4 V	V_BP10 – 1 V
V_OL	Low-level output voltage, LDRV	I_LDRV = 0.1 A			0.5
	Minimum controllable pulse width			100	150	ns
SS/SD SHUTDOWN
V_SD	Shutdown threshold voltage	Outputs off	90	125	160	mV
V_EN	Device active threshold voltage		190	210	245	mV
BOOST REGULATOR
V_BOOST	Output voltage	V_IN= 24 V	31.2	32.2	33.5	V
RECTIFIER ZERO CURRENT COMPARATOR (TPS40054 ONLY)
V_SW	Switch voltage	LDRV output OFF	–10	–5	0	mV
SW NODE
I_LEAK	Leakage current⁽¹⁾ (out of pin)				25	µA
THERMAL SHUTDOWN
T_SD	Shutdown temperature⁽¹⁾			165		°C
T_SD	Hysteresis⁽¹⁾			20		°C
UVLO
V_UVLO	KFF programmable threshold voltage	R_KFF = 28.7 kΩ	6.95	7.5	7.95	V
V_DD	UVLO, fixed		7.2	7.5	7.9
V_DD	UVLO, hysteresis			0.46

(1) Specified by design. Not production tested.

(2) I_KFF increases with SYNC frequency, maximum duty cycle decreases with I_KFF.