Datasheet TPS5100IPW, TPS5100IPWR Datasheet (Texas Instruments)

TPS5100

TRIPLE-CHANNEL PWM CONTROL CIRCUITS

SLVS169 – JANUARY 2000

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D

Low Voltage Operation . . . 2.5 V to 7 V

D

Low Power . . . 3. 5 mA
(f = 500 kHz, Duty = 50%)

D

Internal Undervoltage Lockout Protection

D

Internal Short Circuit Protection

D

Wide Operating Frequency . . . 50 kHz to
1 MHz

D

Internal Precision Reference . . . 1.25 V ±1%
(25°C)

D

On/Off Switch for CH1/3 Pair and Ch2 (see
Function Table)

D

0 to 100% Dead Time Control

D

Totem Pole Output Stage

D

Smal l Package . . . 16 Pin TSSOP

description

The TPS5100 is a triple PWM control circuit, primarily designed to compose the power supply for LCD display .
Each PWM channel has own error amplifier, PWM comparator, dead-time control and output driver. The
trimmed voltage reference, oscillator, undervoltage lockout and short circuit protection are common for all
channels.

This device includes two boost exclusive circuits (ch1,3) and a buck-boost exclusive circuit (ch2). The operating
frequency is set with external resister and capacitor, and dead time is continuously adjustable form 0% to 100%
duty cycle with resistive divider network. Soft start function can be implemented by adding a capacitor to dead
time divider network. Two dead time control inputs are assigned for ch1,3 pair and ch2 individually and each
dead time control input can be used to control on/off operation. TPS5100 can operate from 2.5 V supply voltage
and ch1,3 pair and ch2 operate with reverse phase switching each other to achieve efficient operation in low
power and battery powered system.

The TPS5100 is characterized for operation from –20°C to 85°C.

FUNCTION TABLE

OUTPUT

CONDITION

CH-1 CH-2 CH-3

DTC1/3 >. 0.3 V , DTC2 > 0.3 V ON H ON L ON H
DTC1/3 > 0.3 V , DTC2 <. 0.2 V ON H OFF H ON H
DTC1/3 < 0.2 V , DTC2 > 0.3 V OFF L ON L OFF L
DTC1/3 < 0.2 V , DTC2 < 0.2 V OFF L OFF H OFF L

AVAILABLE OPTIONS

PACKAGE

T

A

TSSOP

(PW)

–20°C to 85°C TPS5100PW

Copyright  2000, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

1
2
3
4
5
6
7
8

16
15
14
13
12
11
10

9

IN-2

E/O2

V

CC

OUT2
OUT3
OUT1

GND

SCP

E/O3
IN-3
IN-1
E/O1
C

T/RT

DTC2
DTC1/3
V

REF

PW PACKAGE

(TOP VIEW)

TPS5100
TRIPLE-CHANNEL PWM CONTROL CIRCUITS

SLVS169 – JANUARY 2000

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

functional block diagram

_

+

_

+

+

–

_

+

+

–

_

+

_

+

_

+

_

+

+

–

–
+
–

+
–
+

+
–
+

+

–

1 V

0.4 V

V

01

V

03

V

ref

V

ref

–V

O2

E/01

IN–1

IN–3
E/03

DTC1/3

DTC2

IN–2

E/02

DIS

DIS

V

ref

V

ref

E/A1

E/C1

E/A3

E/C3

V

T2

1.15 V

VT1, 0.25 V

EN1

EN2

R

R

VT4, 0.7 V

VT3, 0.25 V

E/C2

E/A2

GND

OSC

CT/R

T

UVLO

V

CC

V

ref

V

ref

To Internal
Circuitry

V

CC

PWM/C

PWM/C

PWM/C

DIS

EN1

EN1

EN2

V

T5

1.25 V

LATCH

SPC/C

2 µA

V

CC

V

CC

V

CC

OUT1

OUT3

OUT2

SCP

V

CC

V

01

V

CC

–V

O2

Boost

Buck-Boost

NOTE A: All voltages and currents listed are nominal.

TPS5100

TRIPLE-CHANNEL PWM CONTROL CIRCUITS

SLVS169 – JANUARY 2000

3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics over recommended operating free-air temperature range, VCC = 3.3 V
(unless otherwise noted) (see Note 1)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

V

REF

Reference voltage I

REF

= –1 mA, TA = 25°C 1.237 1.250 1.263 V

V

REF(dev)

Reference voltage change with T

A

I

REF

= –1 mA, See Note 2 15 25 mV

R

EGIN

Input regulation I

REF

= –1 mA, VCC = 2.5 V to 7 V 2 5 mV

R

EGL

Output regulation I

REF

= –0.1 mA to –1 mA 1 5 mV

I

OS

Short-circuit output current V

REF

= 0 –2 –10 –30 mA

NOTES: 1. Typical values of all parameters except for V

REF(dev)

and fdT are specified at TA = 25°C.

2. The deviation parameter V

REF(dev)

is defined as the difference between the maximum and minimum values obtained over the

recommended free-air temperature range (–20°C to 85°C).

undervoltage lockout section

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

V

TH

Upper threshold voltage TA = 25°C 2.2 2.3 2.4 V

V

TL

Lower threshold voltage TA = 25°C 2 2.1 2.2 V

V

hys

Hysteresis (VTH – VTL) TA = 25°C 0.1 0.2 0.3 V

NOTE 1: Typical values of all parameters except for V

REF(dev)

and fdT are specified at TA = 25°C.

protection control section

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

I

SCP

Input terminal source current –1.4 –2 –2.6 µA

V

T2

p

CH-1, 3 1.10 1.15 1.20

V

T3

Input threshold voltage

CH-2 0.20 0.25 0.30

V

V

R

Latch reset threshold voltage TA = 25°C 0.8 1.5 V

V

T5

Threshold voltage 1.20 1.25 1.30 V

NOTE 1: Typical values of all parameters except for V

REF(dev)

and fdT are specified at TA = 25°C.

oscillator section

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

f

OSC

Frequency CT = 130 pF, RT = 7 kΩ 400 500 600 kHz

f

dV

Frequency change with V

CC

VCC = 2.5 V,
CT = 130 pF,

TA = 25°C,
RT = 7 kΩ

1% 2%

f

dT

Frequency change with T

A

CT = 130 pF, RT = 7 kΩ 5% 10%

I

CT/RT

Output source current –180 –200 –220 µA

V

OSCH

H level output voltage 0.95 1 1.05 V

V

OSCL

L level output voltage 0.35 0.40 0.45 V

NOTE 1: Typical values of all parameters except for V

REF(dev)

and fdT are specified at TA = 25°C.

dead time control section

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

I

BDT1/3

p

V

DTC1/3

= 0.35 V to 1.05 V 200

I

BDT2

Input bias current

V

DTC2

= 0.35 V to 1.05 V ±2 ±20

nA

V

T1

Comparator threshold voltage 0.2 0.25 0.3 V

V

T0(DTC1/3)

p

Duty = 0%

0.3 0.4 0.5

V

T100(DTC1/3)

Input threshold voltage (DTC1/3) (see Note 3)

Duty = 100%

f

OSC

=

500 kH

z

0.9 1 1.1

V

V

T0(DTC2)

p

Duty = 0%

0.3 0.4 0.5

V

T100(DTC2)

Input threshold voltage (DTC2) (see NOte 3)

Duty = 100%

f

OSC

=

500 kH

z

0.9 1 1.1

V

NOTES: 1: Typical values of all parameters except for V

REF(dev)

and fdT are specified at TA = 25°C.

3. These specifications are not production tested. They are specified as ensured values on circuit design.

TPS5100
TRIPLE-CHANNEL PWM CONTROL CIRCUITS

SLVS169 – JANUARY 2000

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics over recommended operating free-air temperature range, VCC = 3.3 V
(unless otherwise noted) (see Note 1) (continued)

error amplifier section

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

V

IO

Input offset voltage CH1, 3, Av = 1 15 mV

p

CH1, 3, VI = –.95 V to 1.55 V ±10 ±20

IIBInput bias current

CH2, VI = 0.4 V to 1 V ±10 ±20

nA

p

CH1, 3, 0.95 1.55

VIRInput voltage range

CH2 0.4 1

V

A

VD

Open-loop voltage amplification RFB = 200 kΩ 60 dB

B

1

Unity-gain bandwidth 1 MHz

V

OM+

p

IO = 60 µA 1.2

V

OM–

Output voltage swing

V

ID

= 0.1

V

IO = 0.2 mA 0.2

V

I

OM+

Output sink current VID = 0.1 V, VO = 0.2 V 0.2 1 mA

I

OM–

Output source current VID = 0.1 V, VO = 1.2 V –60 –100 µA

p

CH2, AV = 1, TA = 25°C 678 700 722

VT4Input bias voltage

CH2, AV = 1 665 700 735

mV

NOTE 1: Typical values of all parameters except for V

REF(dev)

and fdT are specified at TA = 25°C.

output section

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

p

IO = 20 mA (CH2) 2.9 3.05

VOHHigh-level output voltage

IO = –40 mA (CH1, 3) 1.9 2.2 2.6

V

p

IO = 20 mA (CH1, 3) 0.2 0.4

VOLLow-level output voltage

IO = 40 mA (CH2) 0.2 0.3 0.6

V

t

r

Rise time CL = 1000 pF 130 ns

t

f

Fall time IO = 1000 pF 50 ns

NOTE 1: Typical values of all parameters except for V

REF(dev)

and fdT are specified at TA = 25°C.

total device

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

I

CC

Supply current Output OFF state 2.5 4 mA

I

CCA

Average supply current F

OSC

= 500 kHz, Duty = 50%, No load 3.5 5 mA

NOTE 1: Typical values of all parameters except for V

REF(dev)

and fdT are specified at TA = 25°C.

TPS5100

TRIPLE-CHANNEL PWM CONTROL CIRCUITS

SLVS169 – JANUARY 2000

5

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TYPICAL CHARACTERISTICS

Figure 1

REFERENCE VOLTAGE

vs

FREE-AIR TEMPERATURE

–50 0 100 150

TA – Free-Air Temperature – °C

50

VCC = 3.3 V
IO = –1 mA

1.26

1.24

1.22

1.27

1.25

1.23

V

ref

– Reference Voltage – V

Figure 2

INPUT THRESHOLD VOLTAGE (UVLO)

vs

FREE-AIR TEMPERATURE

–50 0 100 150

TA – Free-Air Temperature – °C

50

VCC = 3.3 V

2.4

2.2

2

2.5

2.3

2.1

– Input Threshold Voltage (UVLO) – V

V

IT

Figure 3

SUPPLY CURRENT

vs

FREE-AIR TEMPERATURE

–50 0 100 150

TA – Free-Air Temperature – °C

50

VCC = 3.3 V

4

2

0

5

3

1

I

CC

– Supply Current – mA

I

CCA

I

CC

Figure 4

SOURCE CURRENT

vs

FREE-AIR TEMPERATURE

–50 0 100 150

TA – Free-Air Temperature – °C

50

VCC = 3.3 V

–2.2

–2.6

–1.8

–2

–2.4

I – Source Current –

S

Aµ

TPS5100
TRIPLE-CHANNEL PWM CONTROL CIRCUITS

SLVS169 – JANUARY 2000

6

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TYPICAL CHARACTERISTICS

Figure 5

OSCILLATOR FREQUENCY

vs

TIMING CAPACITOR

10 100 10000

CT – Timing Capacitor – pF

1000

10k

1k

100

10

f

OSC

– Oscillator Frequency – kHz

VCC = 3.3 V
RT = 6.8 kΩ
TA = 25°C

Figure 6

OSCILLATOR FREQUENCY

vs

FREE-AIR TEMPERATURE

–50 0 100 150

TA – Free-Air Temperature – °C

50

490

480

505

495

485

500

VCC = 3.3 V
RT = 6.8 kΩ
CT = 130 pF

f

OSC

– Oscillator Frequency – kHz

SOURCE CURRENT

vs

FREE-AIR TEMPERATURE

–50 0 100 150

TA – Free-Air Temperature – °C

50

–200

–210

–190

–195

–205

I – Source Current –

S

Aµ

VCC = 3.3 V

ICT/I

RT

Figure 7

TPS5100

TRIPLE-CHANNEL PWM CONTROL CIRCUITS

SLVS169 – JANUARY 2000

7

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TYPICAL CHARACTERISTICS

Figure 8

INPUT THRESHOLD VOLTAGE (DTC)

vs

TIMING CAPACITOR

10 100 10000

f

OSC

– Oscillator Frequency – kHz

1000

1.04

1.02

0

0.98

VCC = 3.3 V
RT = 6.8 kΩ
TA = 25°C

V

IT

– Input Threshold Voltage – V

Figure 9

INPUT THRESHOLD VOLTAGE (DTC)

vs

TIMING CAPACITOR

10 100 10000

f

OSC

– Oscillator Frequency – kHz

1000

0.42

0.4

0.38

0.36

VCC = 3.3 V
RT = 6.8 kΩ
TA = 25°C

V

IT

– Input Threshold Voltage – V

Figure 10

OUTPUT VOLTAGE

vs

FREE-AIR TEMPERATURE

–50 0 100 150

TA – Free-Air Temperature – °C

50

2.5

1.5

3.5

3

2

VCC = 3.3 V

– Output Voltage – V
V

O

IO = 40 mA

IO = 20 mA

Figure 11

OUTPUT VOLTAGE

vs

FREE-AIR TEMPERATURE

–50 0 100 150

TA – Free-Air Temperature – °C

50

0.2

0

0.4

0.3

0.1

VCC = 3.3 V

IO = 20 mA

IO = 40 mA

– Output Voltage – V
V

O

TPS5100
TRIPLE-CHANNEL PWM CONTROL CIRCUITS

SLVS169 – JANUARY 2000

8

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TYPICAL CHARACTERISTICS

Figure 12

MAXIMUM PEAK OUTPUT VOLTAGE

vs

OUTPUT SOURCE CURRENT

–50 0 100 150

IOM – Output Source Current – µA

50

2

0

3

1

VCC = 3.3 V
TA = 25°C

– Maximum Peak Output Voltage – V

V

OM

Figure 13

OUTPUT VOLTAGE

vs

SUPPLY VOLTAGE

02 68

VCC – Supply Voltage – V

4

4

0

8

6

2

– Output Voltage – V

V

O

IO = 60 µA
TA = 25°C

Figure 14

OUTPUT VOLTAGE

vs

OUTPUT CURRENT

0 0.5 1.5 2

IO – Output Current – mA

1

100

0

200

150

50

– Output Voltage – mV
V

O

VCC = 3.3 V
TA = 25°C

Figure 15

VCC – Supply Voltage – V

REFERENCE VOLTAGE

vs

SUPPLY VOLTAGE

1.2

0.8

0.4

0

0.5 1.5

1.4

1

0.6

0.2

12 30

2.5

V

ref

– PWM Reference Voltage – V

TA = 25°C

Fall

Rise

TPS5100

TRIPLE-CHANNEL PWM CONTROL CIRCUITS

SLVS169 – JANUARY 2000

9

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TYPICAL CHARACTERISTICS

Figure 16

OPEN-LOOP GAIN

vs

FREQUENCY

40

20

0

–40

0.1 10
f – Frequency – kHz

–20

1 100 1000

60

80

0.01

Open-Loop Gain – dB

10k

VCC = 3.3 V
TA = 25°C
Rf = 390 kΩ

Figure 17

PHASE SHIFT

vs

FREQUENCY

–45

–90

–135

–225

0.1 10
f – Frequency – kHz

–180

1 100 1000

0

0.01

Phase Shift – degrees

10k

VCC = 3.3 V
Inv-Amp
Rf = 390 kΩ
TA = 25°C

TPS5100
TRIPLE-CHANNEL PWM CONTROL CIRCUITS

SLVS169 – JANUARY 2000

10

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

MECHANICAL DATA

PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE

4040064/E 08/96

14 PIN SHOWN

Seating Plane

1,20 MAX

1

A

7

14

0,19

4,50
4,30

8

6,20

6,60

0,30

0,75
0,50

0,25

Gage Plane

0,15 NOM

0,65

M

0,10

0°–8°

0,10

PINS **

A MIN

A MAX

DIM

2,90

3,10

8

4,90

5,10

14

6,60

6,404,90

5,10

16

7,70

20

7,90

24

9,60

9,80

28

0,15
0,05

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-153

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T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
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subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.

TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.

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DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
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In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.

TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
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Copyright  2000, Texas Instruments Incorporated