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THV3058_Rev.1.00_E

THV3058

3CH (Buck/Boost) 2CH CP 1CH HVLDO Controller

Description

THV3058 is a controller IC for multi-channel power

supply system with 3 channel PWM DC/DC convert-

ers(CH-1 Boost/CH-2, CH-3 Buck) and 2 channel

charge pump circuits.

THV3058 contains internal soft start, under voltage

protection, over voltage protection and over current

protection, which helps reducing the number of exter-

nal component count and increasing reliability.

Built-in positive and negative charge pump cir-

cuits(VGL/VGH) achieve enhanced performance.

Ceramic capacitors are available for output, that pro-

vides space-saving and low cost system.

THV3058 is ideal for TFT-LCD bias power supply

system.

Features

• QFN 36 pin package

• Input Voltage range : 9 ~ 15V

• Push Pull output for direct Power MOS driving

• Optimized for ceramic output capacitor

• Complete PWM mode controller

• Positive/Negative charge pumps

(PFM mode controller)

• Switching Frequency : 500kHz

• Under Voltage Protection (Timer Latch )

• DC/DC Over Voltage Protection

(CH-2, CH-3 : Timer Latch )

• DC/DC Over Current Protection

• UVLO function

• CH-1 Boost Converter

• CH-2 Buck Converter (Reference Voltage:0.85V)

• CH-3 Buck Converter (Output Voltage : 3.3V)

• High Voltage LDO

Application

½

TFT-LCD Bias power supply

Pin Assignment

OUT_HLDO

LSW_OUT

INV_HLDO

SYSUVLO

OUT_L2

28

VCC

INV2

FB2

36

35

34

33

32

31

30

29

CS2

OUT1

CS1

VREG5

VGH_OK

INV1

FB1

PC3

SGND

VO3_IN

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

27

26

OUT_H2

LL2

BST2

OUT_VGH

V_VGH

V_VGL

OUT_VGL

PGND_CP

NON_VGL

QFN 36PIN

Exposed Pad

(TOP VIEW)

25

24

23

22

21

20

19

18

INV_VGH

37GNDEXP

PGND

LL3

OUT3

BST3

VREF

TEST1

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THine Electronics, Inc.

TEST2

CS3

THV3058_Rev.1.00_E

Output Channel Description

Output Channel

CH-1

CH-2

CH-3

VGH

VGL

HVLDO

LSW_OUT

VGH_OK

PWM Boost converter

PWM Buck converter

(NMOS transistor drive for synchronous rectifier / available for diode rectification)

Description

PWM Buck converter fixed 3.3V

Positive charge pump

Negative charge pump

High voltage LDO

Output for the external load switch.

Output for VGH Power Good Signal.

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THine Electronics, Inc.

THV3058_Rev.1.00_E

Block Diagram

THV 3058

Vin=12V

TFT Multi Channel controller

VCC

VREG5

5 V REG

SYSUVLO

VO1

UVLO

TSD

VO1

VLS

Max Duty

INV1

-

+

VREG5

op

+

Comp

-

STOP

+

-

OUT1

CS1

PGND

SS

SS_OK2

SS_OK1

VREF

OSC

FB1

-

+

OVP1

TEST1

-

+

UVP1

V_ VGL

LSW_ OUT

TEST2

PG_ VGL

SS

SS_OK_LSW

VO3

VO3_IN

VREG5

VO3 =3.3V

gm

+

-

+

Comp

-

STOP

BST3

VREF

OSC

OUT3

LL3

PC3

-

+

-

+

OVP3

Max Duty

UVP3

+

-

CS3

VO2

VREG5

INV2

VO2

-

+

op

+

Comp

-

STOP

BST2

SS

UVLO

SS_OK2

0.85V

OSC

OUT_H2

LL2

FB2

Max Duty

OVP2

-

+

-

+

OUT_L2

UVP2

+

-

CS2

VGH

V_ VGH

VLS

INV_ VGH

-

+

OUT_VGH

OSC

PG_ VGH

SS_OK_LSW

VGH

VREF

5 msec

Delay

STOP

VGL

-

+

V_ VGL

NON_ VGL

-

+

VO1

VGL

OUT_VGL

SS_OK1

VREF

-

+

PG_ VGL

STOP

OSC

V_ VGH

VREF

-

+

PGND_CP

STOP

UVLO

VCC

VREF

Vref

UVP1, 2, 3

OVP2, 3

OUT_HLDO

Timer

Latch

Error

Detection

P_GOOD

VGH_OK

cur_ limit

INV_HLDO

SGND

PG_VGL, VGH

OSC

PG_VGH

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THV3058_Rev.1.00_E

Pin Description

Pin#

1

2

29

14

3

4

5

31

6

32

7

8

9

26

11

10

25

12

13

20

15

16

17

18

19

Symbol

OUT1

CS1

CS2

CS3

VREG5

VGH_OK

INV1

INV2

FB1

FB2

PC3

SGND

VO_3IN

LL2

LL3

OUT3

BST2

BST3

PGND

PGND_CP

VREF

TEST1

TEST2

INV_VGH

NON_VGL

Function

CH-1 output

CH-1, CH-2, CH-3

over current sense

Description

Boost driver pin for CH-1 external device. Output range is 0~5V.

Connect CS1 to sence registance connected Low side NMOS source.

Connect CS2 to sence registance connected Low side NMOS source or

diode anode.

Connect CS3 to sence registance connected diode anode.

5V regulator output pin. Power supply for low voltage output.

Connect an external capacitor(Typ:4.7μF) between this pin.

Open drain output. Connect an approximately 100k ohm pull-up resistor.

When VGH has generated normally, the output is fixed to High level.

CH-1, CH-2 error amp inverting inputs. The voltage on INV1 is 1.2V,

and INV2 is 0.85V, in the normal operation.

CH-1, CH-2 error amplifier outputs for phase compensation by connect-

ing resistors and capacitors between FB1,2 and INV1,2.

Connect a capacitor between this pin for phase compensation.

Ground for control circuit.

CH-3 output voltage feedback pin.

CH-2, CH-3 node connection to inductor.

Driver pin for CH-3 High side transistor.

CH-2, CH-3 power supply for High side driver output.

Bootstrap diodes are built-in.

Ground for power supply

Reference voltage(1.2V). Connect an external capacitor(0.01μF)

between this pin for stability. Maximum load current is 1mA.

Connect to Ground or open in normal use..

VGH comparator inverting input

VGL comparator non-inverting input

VGL drive output for negative voltage charge pump. V_VGL is used as

input power supply. In PFM mode, this pin can be used as PMOS gate

drive.

VGL output voltage supply.

VGH output voltage supply.

VGH drive output for positive voltage charge pump. V_VGH is used as

power supply. In PFM mode, this pin can be used as NMOS gate drive.

5V regulator output

VGH power good signal

CH-1,CH-2 error amplifier

inverting input

CH-1,CH-2

error amplifier output

CH-3 phase compensation

Signal Ground

CH-3 output voltage feedback

CH-2, CH-3 node

connection to inductor

CH-3 output

CH-2, CH-3 High side capac-

itor connection

Power Ground

Reference voltage

Test pin

VGH comparator inverting

input

VGL comparator non-invert-

ing input

VGL

(charge pump -)output

VGL output voltage supply

VGH output voltage supply

VGH

(charge pump +)output

21

22

23

24

OUT_VGL

V_VGL

V_VGH

OUT_VGH

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THV3058_Rev.1.00_E

Pin#

27

28

Symbol

OUT_H2

OUT_L2

Function

CH-2 High side drive output

CH-2 Low side driver output

Description

CH-2 High side NMOS transistor drive for synchronous rectifier.

CH-2 Low side NMOS transistor drive for synchronous rectifier.

Available even without Low side NMOS transistor.

SYSUVLO pin shuts down the IC, when the power supply voltage (Vin) is

lower than the predetermined voltage. The threshold voltage is 3.5V, the

release voltage is 5.46V. by internal setting. The threshold voltage also can

be set optionally by changing the external resistance value.

HVLDO inverting input. The voltage on this pin is 1.2V in the normal oper-

ation.

HVLDO output. Connect to an external capacitor(Typ:2.2μF).

Gate control pin for CH-1 external switch.

Soft start function is built-in.

Power supply for control.

30

SYSUVLO

System UVLO input

33

34

35

36

INV_HLDO

OUT_HLD

O

LSW_OUT

VCC

HVLDO amplifier inverting

input

HVLDO output

Output for CH-1 switch con-

trol

Power supply

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THine Electronics, Inc.

THV3058

THV3058概述

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