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Национальный университет Львовская политехника

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Розрахункова СЗіВІ / Розрахункова робота / Стабілізатори напруги / tps62242.pdf

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TPS62240, TPS62242, TPS62243

www.ti.com

SLVS762B–JUNE 2007–REVISED SEPTEMBER 2007

PARAMETER MEASUREMENT INFORMATION

	TPS62240DVR		L		VOUT
			2.2 µH		VOUT
	V IN	SW
CIN	EN		R1	C1	COUT
4.7 µF	EN			22 pF
4.7 µF				22 pF
		FB			10 µF
	GND	FB
	GND
	MODE		R2
	MODE
	L: LPS3015 2.2 µH, 110 mΩ
	CIN GRM188R60J475K 4.7 µF Murata 0603 size
	COUT GRM188R60J106M 10 µF Murata 0603 size

TYPICAL CHARACTERISTICS

Table of Graphs

Efficiency

Output voltage accuracy

Startup timing

Typical operation

PFM load transient

PFM line transient

Mode transition

Shutdown Current into VIN Quiescent Current

Static Drain-Source On-State

Resistance

		FIGURE
	vs Output current, Power Save Mode	Figure 1
	vs Output current, Forced PWM Mode	Figure 2
	vs Output current	Figure 3
	vs Output current	Figure 4
	vs Output current, TA = 25°C, Mode = GND	Figure 5
	vs Output current, TA = –40°C, Mode = GND	Figure 6
	vs Output current, TA = 85°C, Mode = GND	Figure 7
	vs Output current, TA = 25°C, Mode = VI	Figure 8
	vs Output current, TA = 85°C, Mode = GND	Figure 9
	vs Output current, TA = –40°C, Mode = VI	Figure 10
		Figure 11
	PWM Mode with VO = 1.8V	Figure 12
	PFM Mode with VO = 1.8V	Figure 13
	PFM Mode Ripple	Figure 14
	1 mA to 50 mA with VO = 1.8V	Figure 15
	20 mA to 200 mA with VO = 1.8V	Figure 16
	50 mA to 200 mA with VO = 1.8V	Figure 17
	IO = 50 mA, 3.6V to 4.2V	Figure 18
	IO= 250 mA, 3.6V to 4.2V	Figure 19
	PFM to PWM	Figure 20
	PWM to PFM	Figure 21
	vs Input Voltage, (TA = 85°C, TA = 25°C, TA = -40°C)	Figure 22
	vs Input Voltage, (TA = 85°C, TA = 25°C, TA = -40°C)	Figure 23
	vs Input Voltage, (TA = 85°C, TA = 25°C, TA = -40°C)	Figure 24
	vs Input Voltage, (TA = 85°C, TA = 25°C, TA = -40°C)	Figure 25
		Figure 25

Copyright © 2007, Texas Instruments Incorporated	Submit Documentation Feedback	5
Product Folder Link(s): TPS62240 TPS62242 TPS62243

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SLVS762B–JUNE 2007–REVISED SEPTEMBER 2007

EFFICIENCY (Power Save Mode)	EFFICIENCY (Forced PWM Mode)
vs	vs
OUTPUT CURRENT	OUTPUT CURRENT

	100
	90	VI = 2 V			VI = 2 V
	90	VI = 2 V
	VI	= 2.7 V			VI = 4.5 V
	80				VI = 4.5 V
	VI = 3 V
	70
- %	60		VI = 3.6 V
Efficiency	50	VI = 4.5 V
		VI = 4.5 V
	40

	30
	20				VO = 1.8 V,
	20				MODE = GND,
					MODE = GND,
	10				L = 2.2 H,
	10				DCR 110 m!
					DCR 110 m!
	0
	0.01	0.1	1	10	100	1000
			IO - Output Current - mA

	100
			VI = 2 V
	90	VI	= 2.7 V
		VI	= 2.7 V
	80	VI	= 3 V
		VI	= 3 V
	70			VI = 4.5 V
				VI = 4.5 V
-%	60			VI = 3.6 V
				VI = 3.6 V
Efficiency	50
Efficiency	40
	30
	20			VO = 1.8 V,
				MODE = VI,
	10			L = 2.2 H
	0
		1	10	100	1000
			IO - Output Current - mA

Figure 1.

Figure 2.

		EFFICIENCY
		vs
		OUTPUT CURRENT
	100
	90
		VI = 2.7 V
	80
	70
− %	VI	= 2.3 V		VI	= 2.3 V
− %	60		VI	= 4.5 V
Efficiency			VI	= 4.5 V
	50
	40	VI	= 3.6 V
	40

	30			VO = 1.2 V,
	20			MODE = VI,
	20			L = 2 H,
				L = 2 H,
	10			MIPSA2520
	10			CO = 10 F 0603
				CO = 10 F 0603
	0
	1	10		100	1000
		IO − Output Current − mA

Figure 3.

				EFFICIENCY
					vs
				OUTPUT CURRENT
	100
	90	VI	= 2.3 V
	80
					VI	= 4.5 V
	70
− %	60				VI = 3.6 V
− %	60
Efficiency				VI	= 2.7 V
	50
	40

	30				VO = 1.2 V,
	20				MODE = GND,
	20				L = 2 H,
					L = 2 H,
	10				MIPSA2520
	10				CO = 10 F 0603
					CO = 10 F 0603
	0
	0.01		0.1	1	10	100	1000
			IO − Output Current − mA

Figure 4.

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TPS62240, TPS62242, TPS62243

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SLVS762B–JUNE 2007–REVISED SEPTEMBER 2007

OUTPUT VOLTAGE ACCURACY vs

OUTPUT CURRENT

	1.88	TA = 25°C,
		TA = 25°C,
	1.86	VO = 1.8 V,
	1.86	MODE = GND,
		MODE = GND,
-V		L = 2.2 H,
-V	1.84	CO = 10 F
DC					PFM
Voltage					PFM
	1.82
							PWM
-Output	1.8
			VI = 2.3 V
	1.78		VI = 2.7 V
O	1.78		VI = 3 V
V			VI = 3 V
			VI = 3.6 V
	1.76		VI = 4.5 V
	1.74
	0.01		0.1	1	10	100	1000
				IO - Output Current - mA

Figure 5.

OUTPUT VOLTAGE ACCURACY vs

OUTPUT CURRENT

	1.88
		TA = 85°C,
	1.86	VO = 1.8 V,
	1.86	MODE = GND,
		MODE = GND,
-V		L = 2.2 H,
-V	1.84	CO = 10 F
DC
Voltage					PFM
	1.82
							PWM
-Output							PWM
	1.8
		VI = 2.3 V
	1.78	VI = 2.7 V
O	1.78
V		VI = 3 V
		VI = 3.6 V
	1.76	VI	= 4.5 V
		VI	= 4.5 V
	1.74
	0.01		0.1	1	10	100	1000
			IO - Output Current - mA

Figure 7.

OUTPUT VOLTAGE ACCURACY vs

OUTPUT CURRENT

	1.88	TA = -40°C,
		TA = -40°C,
	1.86	VO = 1.8 V,
	1.86	MODE = GND,
		MODE = GND,
-V		L = 2.2 H,
-V	1.84	CO = 10 F
DC				PFM
DC
Voltage	1.82						PWM
							PWM

Output	1.80	VI	= 2.3 V
		VI	= 2.3 V
	1.78	VI	= 2.7 V
-		VI = 3 V
O
O
V		VI	= 3.6 V
		VI	= 3.6 V
	1.76	VI	= 4.5 V
	1.74
	0.01		0.1	1	10	100	1000
				IO - Output Current - mA

Figure 6.

OUTPUT VOLTAGE ACCURACY vs

OUTPUT CURRENT

	1.854
		TA = 25°C,
	1.836	VO = 1.8 V,
	1.836	MODE = VI,
		MODE = VI,
-V		L = 2.2 H
-V
DC	1.818
DC
Voltage	1.8
Voltage
Output		VI = 2 V
Output	1.782	VI = 2.7 V
-		VI = 3 V
O		VI = 3 V
V		VI = 3.6 V
	1.764	VI = 4.5 V
	1.746
	0.01	0.1	1	10	100	1000
		IO - Output Current - mA

Figure 8.

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TPS62240, TPS62242, TPS62243

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SLVS762B–JUNE 2007–REVISED SEPTEMBER 2007

OUTPUT VOLTAGE ACCURACY	OUTPUT VOLTAGE ACCURACY
vs	vs
OUTPUT CURRENT	OUTPUT CURRENT

	1.854
		TA = 85°C,
	1.836	VO = 1.8 V,
	1.836	MODE = VI,
		MODE = VI,
-V		L = 2.2 H
-V
DC	1.818
DC
Voltage	1.8
Voltage
Output	1.782			VI = 2 V
Output	1.782			VI = 2.7 V
-				VI = 2.7 V
O				VI = 3 V
V				VI = 3 V
	1.764			VI = 3.6 V
	1.764			VI = 4.5 V
				VI = 4.5 V
	1.746
	0.01	0.1	1	10	100	1000
			IO - Output Current - mA

	1.854
		TA = -40°C,
	1.836	VO = 1.8 V,
	1.836	MODE = VI,
		MODE = VI,
V		L = 2.2 H
-
VoltageDC	1.818
VoltageDC	1.8
-Output			VI = 2 V
			VI = 2.7 V
	1.782		VI	= 3 V
			VI	= 3 V
O			VI = 3.6 V
V			VI = 3.6 V
	1.764		VI = 4.5 V
	1.764
	1.746
	0.01	0.1	1	10	100	1000
		IO - Output Current - mA

EN 2V/Div

SW 2V/Div

VOUT 2V/Div

Figure 9.

STARTUP TIMING

VIN = 3.6V

RLoad = 10R

VOUT = 1.8V

IIN into CIN

MODE = GND

IIN 100mA/Div

Time Base - 100 s/Div

Figure 11.

Figure 10.

TYPICAL OPERATION vs

PWM MODE

VIN 3.6V

VOUT 1.8V, IOUT 150mA

L 2.2 H, COUT 10 F 0603

VOUT 10mV/Div

SW 2V/Div

Icoil 200mA/Div

Time Base - 10 s/Div

Figure 12.

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TYPICAL OPERATION vs

PFM MODE

VOUT 20mV/Div

VIN 3.6V

VOUT 1.8V, IOUT 10mA

L 2.2 H, COUT 10 F 0603

SW 2V/Div

Icoil 200mA/Div

Time Base - 10 s/Div

Figure 13.

PFM LOAD TRANSIENT

VOUT 50mV/Div
		VIN	3.6V
		VOUT 1.8V
		IOUT	1mA to 50mA
IOUT 50mA/Div	50mA	MODE = GND

1mA

Icoil 200mA/Div

Time Base - 100 s/Div

Figure 15.

TPS62240, TPS62242, TPS62243

SLVS762B–JUNE 2007–REVISED SEPTEMBER 2007

		PFM MODE RIPPLE
		VIN 3.6V; VOUT 1.8V, IOUT 10mA;
VOUT	20mV/Div	L = 4.7 H, COUT = 10 F 0603,
VOUT	20mV/Div	MODE = GND

SW 2V/Div

Icoil 200mA/Div

Time Base - 2 s/Div

Figure 14.

PFM LOAD TRANSIENT

VOUT 50mV/Div
		VIN	3.6V
		VOUT 1.8V
		IOUT	20mA to 200mA
IOUT 200mA/Div	200mA	MODE = GND
IOUT 200mA/Div	200mA
20mA

Icoil 200mA/Div

Time base - 40 s/Div

Figure 16.

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TPS62240, TPS62242, TPS62243

SLVS762B–JUNE 2007–REVISED SEPTEMBER 2007

PFM LOAD TRANSIENT

VOUT 50mV/Div

IOUT 200mA/Div

50mA

Icoil 200mA/Div

VIN 3.6V to 4.2V 500mV/Div

VOUT = 1.8V 50mV/Div IOUT = 250mA

MODE = GND

	VIN	3.6V
	VOUT 1.8V
	IOUT	50mA to 200mA
200mA	MODE = VIN
200mA

Time Base - 100 s/Div

Figure 17.

PFM LINE TRANSIENT

Time Base - 100 s/Div

Figure 19.

VIN 3.6V to 4.2V 500mV/Div

VOUT = 1.8V 50mV/Div IOUT = 50mA

MODE = GND

MODE 2V/Div

SW 2V/Div

PFM Mode

Icoil

200mA/Div

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PFM LINE TRANSIENT

Time Base - 100 s/Div

Figure 18.

MODE TRANSITION

PFM to PWM

VIN = 3.6

VOUT = 1.8V

IOUT = 10mA

Forced PWM Mode

Time Base - 1 s/Div

Figure 20.

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SLVS762B–JUNE 2007–REVISED SEPTEMBER 2007

MODE TRANSITION

PWM to PFM

MODE

2V/Div VIN = 3.6

VOUT = 1.8V

IOUT = 10mA

SW 2V/Div

Forced PWM Mode

PFM Mode

Icoil

200mA/Div

Time Base - 2.5 s/Div

Figure 21.

			QUIESCENT CURRENT
					vs
				INPUT VOLTAGE
	20
		MODE = GND,
		EN = VIN,
		Device Not Switching						o
	18	Device Not Switching				TA	= 85 C
	18					TA	= 85 C
− A	16
Current	16
						T	= 25oC
						A
	14
-Quiescent	14
	12

Q								o
Q						TA	= -40 C
I						TA	= -40 C
	10
	8
	2	2.5	3	3.5	4	4.5	5		5.5	6
				VIN − Input Voltage − V

Figure 23.

SHUTDOWN CURRENT INTO VIN vs

INPUT VOLTAGE

	0.8
		EN = GND
− A	0.7
− A
VIN	0.6							TA = 85oC
VIN								TA = 85oC
Into	0.5
Into
Current	0.4
Current
-Shutdown	0.3
	0.2
			T	A	= 25oC		T	A	= -40oC
SD				A				A
SD	0.1
I

	0
	2	2.5	3		3.5	4	4.5		5	5.5	6
			VIN − Input Voltage − V

Figure 22.

STATIC DRAIN-SOURCE ON-STATE RESISTANCE vs

INPUT VOLTAGE

Ω	0.8
Ω
−		High Side Switching
StateResistance		High Side Switching
	0.7
	0.6
				TA = 85oC
	0.5
					TA = 25oC
-					TA = 25oC
SourceOn	0.4
	0.3

-
Drain	0.2
Drain
-Static		TA = -40oC
	0.1

DS(on)	0
DS(on)	2	2.5	3	3.5	4	4.5	5
R			VIN	− Input Voltage − V
			VIN	− Input Voltage − V

Figure 24.

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SLVS762B–JUNE 2007–REVISED SEPTEMBER 2007

STATIC DRAIN-SOURCE ON-STATE RESISTANCE vs

INPUT VOLTAGE

Ω	0.4
Ω
−		Low Side Switching
StateResistance		Low Side Switching
	0.35
	0.3
				TA = 85oC
	0.25
					TA = 25oC
-					TA = 25oC
SourceOn	0.2
	0.15

-
Drain	0.1
Drain
-Static		TA = -40oC
	0.05

DS(on)	0
DS(on)	2	2.5	3	3.5	4	4.5	5
R			VIN	− Input Voltage − V
			VIN	− Input Voltage − V

Figure 25.

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