Rev. 1.00 1 March 08, 2018 Rev. 1.00 PB March 08, 2018

HT45B0016Wireless Charger Transmitter’s Power Stage

Features• IntegratedLowSideNMOS:RDSON=12mΩ@

VCC=5V• IntegratedHighSideNMOS:RDSON=30mΩ@

VCC=5V• IntegratedOCPfunctionwithovercurrent triggerpointadjustableusinganexternalresistor

• IntegratedOTPfunction• Enablepin(EN)controlstheoutputstatus• Packagetype:23-pinQFN

General DescriptionTheHT45B0016isa two-in-onepowerhalf-bridgechip developed byHoltek forwireless chargerapplications.The half-bridge power stagewithintegratedNMOS,canworkwiththeHT66FW2230orHT66FW2350 to achieve completewirelesschargersolutions.TheVINinputrangeis4.5V~25Vcovering various wireless charger transmittertypes.TheHT45B0016chipcanbe flexiblyusedindifferenct architectures, a single chip forhalf-bridgedriverLCseriesresonanceandtwochipsforfull-bridgedriverLCseries resonance.Combinedwith theHT66FW2230orHT66FW2350softwarearhcitecture,ahalf-bridgesolutioncanbeusedforlowpowerapplicationswhileafull-bridgesolutioncanbeusedformediumpowerapplications.

TheHT45B0016 is supplied in the 23-pinQFNpackage type.ThePCBlayoutandother importantinformationareprovidedinthefollowingsections.

Pin Assignment

HT45B001623 QFN-A

6

5

4

3

2

1

12

13

14

15

16

17OCSET

EN

AGND

PWM

LX

LX

PGND

PGND

PGND

PGNDVIN LX

24 25EN

VIN

7 8 9 10 11

VIN

VIN

LX LX

VCC

VIN

PVCC

PGND LX

181920212223

BST

VIN

Order Number Marking Temp. Range Package (Green)HT45B0016QT1U HT45B0016 -40˚C to +85˚C 23QFN (4mm×4mm)

Note:QT:QFN4X4-23; 1:BondingCode; U:Tape&Reel;

Green:LeadFree/HalogenFree.

Rev. 1.00 2 March 08, 2018

HT45B0016

Pin DescriptionNo. Pin Name Description

1 OCSET OCP setup; connects a resistor to ground for OCP trigger setup.2, 3 EN Enable pin. High=enable; Low=disable. Can not be floating.4 AGND Analog ground5 PWM Driver PWM input6, 7, 8, 9, 22, 24 VIN Power supply

10, 11, 16, 17, 18, 25 LX High side and low side MOSFET node. PWM output voltage connects the output LC resonance circuit.12, 13, 14, 15, 19 PGND Power supply ground20 BST Boost capacitor connection; externally connects a capacitor to LX.21 PVCC Driver power supply

23 VCC Analog power supply for internal circuits; connects a bypass capacitor to AGND.

Absolute Maximum RatingsVINtoAGND.........................................-0.3Vto30V

VCCtoAGND..........................................-0.3Vto6V

PVCCtoAGND........................................-0.3Vto6V

EN,OCSET,PWMtoAGND...................-0.3Vto6V

BSTtoPGND.........................................-0.3Vto35V

LXtoBST.................................................-6Vto0.3V

ThermalResistanceof Juntion toAmbient, (θJA)QFN4X4-23.................................................... 25˚C/W

JunctionTemperature..........................................150˚C

StorageTemperature........................... -65˚Cto150˚C

ReflowTemperature(soldering,10seconds).....300˚C

Note:Thesearestressratingsonly.Stressesexceedingtherangespecifiedunder"AbsoluteMaximumRatings"maycausesubstantialdamagetothedevice.Functionaloperationofthedeviceatotherconditionsbeyondthoselistedin thespecificationisnot impliedandprolongedexposuretoextremeconditionsmayaffectdevicesreliability.

Electrical CharacteristicsThedeviceisnotguaranteedtofunctionoutsideitsoperatingconditions.ParameterswithMin.and/orMax.limitsare100%testedat+25˚C,unlessotherwisespecifed.

Parameter Conditions Min. Typ. Max. UnitVIN Input Voltage Range VIN 4.5 — 25 VVCC Input Voltage Range VCC 4.5 5 5.5 VQuiescent Supply Current (VCC) EN=High, PWM=Low — 210 250 μAShutdown Current (VCC) EN=Low — — 1 μAVCC Rising POR Threshold — 3.7 4.0 4.3 VVCC POR Hysteresis — 150 200 250 mVZero Current Detect LX-PGND -5 — 5 mVOCSET Current Source — 9 10 11 μAThermal Shutdown Threshold Hysteresis=45˚C — 145 — ˚CHigh Side Switch Resistance BST-LX forced to 5V, VCC=5V — 30 — mΩLow Side Switch Resistance VCC=5V — 12 — mΩ

PWM Input Logic ThresholdPWM Rising (VTH_PWM_R) 3.6 3.9 4.1

VPWM Falling (VTH_PWM_F) 1.0 1.2 1.4

Tri-state Input Rising Logic ThresholdPWM Rising (VTH_PWM_R) 1.0 1.3 1.6 VHysteresis 140 280 420 mV

Rev. 1.00 3 March 08, 2018

HT45B0016

Parameter Conditions Min. Typ. Max. Unit

Tri-state Input Falling Logic ThresholdPWM Falling (VTH_PWM_F) 3.4 3.7 4.0 VHysteresis 85 170 255 mV

Logic Input High Voltage EN 2.0 — — VLogic Input Low Voltage EN — — 0.8 VPWM to High Side Gate (tPD_OFF_DH) PWM High to Low to DH High to Low — 20 — nsPWM to Low Side Gate (tPD_OFF_DL) PWM Low to High to DL High to Low — 20 — nsLow to High Side Gate Deadtime (tPD_ON_DH) DL High to Low to DH Low to High — 20 — nsHigh to Low Side Gate Deadtime (tPD_ON_DL) DH High to Low to DL Low to High — 20 — ns

PWM Timing Diagram

EN

PWM

DL

DH

tPD_OFF_DLtPD_ON_DL

tPD_ON_DL

tPD_OFF_DL

PWM Logic Output vs. EN Status

EN PWM DH DLL x L LH H H LH L L H

Note: L=Low; H=High; x=Don’t care.

Output Truth Table

Rev. 1.00 4 March 08, 2018

HT45B0016

Application Circuits

15W Wireless Charger TX MP-A2 Type

J3

OC

DS

RS

E1

0.05R

C13

10n/50v

R6

33k/1%

C4

10uF/25v

D2

LED(G

)

C8

47nF/250V/NPO

C22

0.1uF/25v

C20

4.7nF/16v

C3

0.1uF/250V/NPO

C18

10uF/10v

D1

BAV21WS C

10.1uF/25v

C21

220PF/16v

R30

1k

R22

1k/1%

C10

0.1uF/25v

R18

10K Temp.

C9

NC

C12

680pFD

3LED

(R)

R15

33K

R11

1k

L2WPC_L

R14

6.8K

C2

10uF/25v

L1WPC_L

R31

1k

C19

0.1uF/25v

R33

130k

R16

100K

C11

5.6n/50v

C6

0.1uF/250V/NPO

C5

10uF/25v

R12

100K

GND

GND

R1

300k/1%

C7

0.1uF/25v DetectV

in

Isen

Idemo

5V5V

5V

FODtem

p

R13

1.5kOCDSC

KOCDSD

AVdem

oDEM

O1A

P

PLLCOML

R24

100kC

160.1uF/25v

J1Vin=12v

J2GND 5V

Vdem

o

GND

TP_2TestPoint

V-D

emodulation

Full-Bridge R

esonance

Tem

perature Sensor

R37

3k

C25

10n/25v

C23

15nF/25v

R39

10k

R38

620k

R40

10k

R41

10k C264.7n/10v

C27

0.1u/10v

Idemo

TP_6TestPoint

I-Dem

odulation

C32

10uF/25v

C33

0.1uF/50v

LHB

RHB

C36

10uF/10v

C3747nF/250v

R26

33k

R29

20k

Current Sensor

Vin

OSC

1

OSC

2

C38

10p/10vC

3510p/10v

13

2

4

Y18M

Hz

Vin

2

GND1 Vout

3U4

LDOH

T7550-1

GND

5V

5V

DEM

O0A

P

DEM

O0A

N

DEMO0CX

Vin

PLLCOML

OSC

2OSC

1

Vin

AVDD

AVDD

AVSS

AVSS

VD

D

VSS

Isen

Idemo

LED1

LED2

LED1

LED2

Vr

D6

RB160M

-40

Vr

VrL

R341k

TP_8

TestPoint

Resonant V

oltage Detect

MC

U C

ontrol

Input Power

PC1/D

EMO1A

X1

PC2/D

EMO1C

P2

PC3/D

EMO1C

N3

PC4/D

EMO1C

X4

PC5/STC

K/DEM

O0/A

N5/V

REFI

5

PC6/STP/A

N4/V

REF

6

PA0/A

N0/STPB

/ICPD

A7

PA2/C

TCK/AN2/IC

PCK

8

PB3/D

EMO0A

X24

PB2/D

EMO0A

N23

PB1/D

EMO0A

P22

PB0/O

CP

21

PD2/PTC

K/OSC

120

PD1/PTP/O

SC2

19

PD0/PTPI/IN

T1/SCL/FSK

D18

PC7/IN

T0/SDA/DEM

O1

17

PA7/PWM316PA6/PWM215PA5/PWM114PA4/PWM013VDD12VSS11PA3/AN3/CTPB10PA1/AN1/CTP/STPI9 PC0/DEMO1AN 32

PB7/DEMO1AP 31

PB6/DEMO0CX 30

PB5/DEMO0CN 29

AVSS 28

PLLCOM 27

AVDD 26

PB4/DEMO0CP 25

Lead0

U3

HT66FW

235032QFN

OCDSC

KOCDSD

A

TP_5

TestPointTP_7TestPoint

FODtem

p

PWM2

PWM0VDDVSSVrL

DEM

O0A

X

DEM

O0C

P

DEM

O0C

N

DetectVinDEMO1AP

DEM

O1A

X

DEMO1AN

DEM

O1C

P

DEM

O1C

XDEM

O1C

NDEM

O0A

PDEM

O0A

NDEM

O0A

X

DEMO0CP

DEMO0CN

J5DC2.1

VSS

C39

2.2nF/50V

R52

10R

C40

2.2nF/50V

R53

10R

GND

GND

G

S D

Q1NC

R59

NC

RS

E2

0.05R

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

R19

100K

C17

NC

R23

NC

C14

100nF/10v

R21

NC

R25

NC

R20

2M

DEM

O1A

N

DEM

O1A

X

DEM

O1C

P

DEM

O1C

N

DEM

O1C

X

R17

NCC15N

C

TP_3TestPoint

GND

GND

GND

C43

0.1uF/25v

C440.1uF/25v

GND

GND

GND

C41

2.2nF/50V

R54

10R

C42

2.2nF/50V

R55

10R

CsNC

GNDTP_1TestPoint

TP_4TestPoint

TP_9TestPoint

C45

0R

GND

GND

J4GND

C460R

R57

NC

R56

NC

5V

GND

D11

SS14

5V

G

S D

Q6

2N7002

R60

NC

5V

G

S D

Q7

2N7002

R61

220R

R62

3R

GND

R63

10K

R64

10K

GND

R65

0R

R66

0RDEM

O1C

P

DEM

O1C

N

DEM

O1C

X

AN5

R68

33k/1%

R67NC

C47

0.1uF/25v

AN5

LHB

VIN_B

US

VIN_B

US

R69

300k/1%

GND

C48

NC

R70

0R

GND

R71

NC

GND

Q8

SIA453ED

J

R72

10K

R73

10KGND

5VC

3010uF/25v

C34

0.1uF/50v

5V

GND

PWM0

PWM2

R50

3.3K

C29

0.1uF/25v

C31

0.1uF/25v

Driver_en

Driver_en

Driver_en

R51

3.3K

OCSET

1EN

2

VIN 6

EN3

AGND4

PWM

5

VIN 7

VIN

8,9,22,24

LX10,11,16,17,18,25

PGND

12,13,14,15,19

BST

20

PVCC

21V

CC

23

Q9

HT45B

0016

OCSET

1EN

2

VIN 6

EN3

AGND4

PWM

5

VIN 7

VIN

8,9,22,24

LX10,11,16,17,18,25

PGND

12,13,14,15,19

BST

20

PVCC

21V

CC

23

Q10

HT45B

0016

Rev. 1.00 5 March 08, 2018

HT45B0016

Layout Guide

Layout Reference Circuit

ComponentReference:

CVCC 0.1μF/0603

CIN 10μF/0805

CBST 0.1μF/0805

ROCSET 0603

LayoutConsiderations:

1.TheinputcapacitorCINshouldbeplacedasclosetotheVINpinaspossible.ThepowerflowsthroughCINfirstandthenenterstheVINpin.

2.TheinductorshouldbeplacedasclosetotheLXpinaspossibletoreducesystemnoiseinteferenceresultingfromthecopper.

3.Allanalogsignalsshouldbeasfarawayfromthehighvoltageswitching(LX,BST,etc)aspossible.

Rev. 1.00 6 March 08, 2018

HT45B0016

Package Information

Notethat thepackageinformationprovidedhereisforconsultationpurposesonly.Asthis informationmaybeupdatedatregularintervalsusersareremindedtoconsulttheHoltekwebsiteforthelatestversionofthepackageinformation.

Additionalsupplementaryinformationwithregardtopackagingislistedbelow.Clickontherelevantsectiontobetransferredtotherelevantwebsitepage.

• FurtherPackageInformation(includeOutlineDimensions,ProductTapeandReelSpecifications)

• PackingMeterialsInformation

• Cartoninformation

http://www.holtek.com.tw/en/homehttp://www.holtek.com.tw/en/255http://www.holtek.com.tw/en/255

Rev. 1.00 7 March 08, 2018

HT45B0016

SAW Type 23-pin QFN (4mm×4mm×0.8mm) Outline Dimensions

E2

A3b e

A

A1E

D2

E1

D1

LD

3D

4

D

D5

D1

E1

SymbolDimensions in inch

Min. Nom. Max.A 0.028 0.031 0.035

A1 0.000 — 0.002 A3 — 0.008 BSC —b 0.008 0.010 0.012 D 0.156 0.157 0.159 E 0.156 0.157 0.159 e — 0.020 BSC —

D1 — 0.012 BSC —

E1 — 0.012BSC —

D2 0.098 0.102 0.106 E2 0.098 0.102 0.106 D3 0.033 0.035 0.037 D4 0.014 0.016 0.018 D5 0.049 0.051 0.053 L 0.014 0.016 0.018

SymbolDimensions in mm

Min. Nom. Max.A 0.70 0.80 0.90

A1 0.00 — 0.05A3 — 0.20 BSC —b 0.20 0.25 0.30D 3.95 4.00 4.05E 3.95 4.00 4.05e — 0.50 BSC —

D1 — 0.30 BSC —E1 — 0.30 BSC —D2 2.50 2.60 2.70E2 2.50 2.60 2.70D3 0.85 0.90 0.95D4 0.35 0.40 0.45D5 1.25 1.30 1.35L 0.35 0.40 0.45

Rev. 1.00 8 March 08, 2018

HT45B0016

Copyright© 2018 by HOLTEK SEMICONDUCTOR INC.

The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek's products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw/en/home.

FeaturesGeneral DescriptionPin AssignmentPin DescriptionAbsolute Maximum RatingsElectrical CharacteristicsPWM Timing DiagramApplication CircuitsLayout GuidePackage InformationSAW Type 23-pin QFN (4mm×4mm×0.8mm) Outline Dimensions