TS51111-M22WCSR Datasheet TS51111-M22WCSR, TS51111-M22QFNR | P13-P15

TS51111

Final Datasheet Rev 2.2

April 17, 2015

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Functional Description (continued)

Charge Termination

To allow for accurate charge termination in a charging

application, the TS51111 load switch can be recongured

to operate as a voltage regulator. In this mode, the switch

source voltage will be regulated to the voltage set by the

VOUTSET<6:0> bits. The switch is put into this mode by

asserting the EN_TOP bit of the conguration register.

Available voltage settings and the corresponding codes are

shown. To support indirect charge applications, the EN_TOP

and IND_SET bits must both be set hi. The output voltage

will still be determined by the VOUTSET<6:0> bits. The

VOUT setpoints are 3.0V to 5.54V in 20mV steps. In addition,

VOUTSET<6:0>=0x64 will select a 5.0V setpoint.

AMUX

To reduce the number of connections required between the

microprocessor and the TS51111, all analog outputs from

the TS51111 are measured from the same analog pin and

selectable via the AMUX register. Signals on the AMUX pin

are buered using an internal unity gain amplier. When

unselected, the AMUX pin will be high impedance.

AMUX<2:0> Analog Signal

000 ----

001 PDC_DIV

010 IOSENSE

011 IBSENSE

100 TEMP

101 PACKP_DIV

110 USB_DIV

111 THERM_DIV

Thermistor Driver

An integrated thermistor driver allows system temperature

measurement. When enabled, the thermistor drive will drive

the VREF voltage onto the THERM pin. When disabled, the

THERM pin will be high impedance to allow external drive of

the same thermistor. In the automatic mode, the thermistor

driver is enabled whenever battery charging is enabled. This

is whenever EN_SW or EN_PRE are active. The voltage on the

THERM pin can be measured using the internal voltage divider

and will be visible on the AMUX pin.

TCTRL<1:0> Thermistor Operation

00 Disable

01 Enable

10 Auto

TS51111

Final Datasheet Rev 2.2

April 17, 2015

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Control Registers

REG R/W Description

LSON R/W Forces on both LS FETs when hi. Allows normal synchronous rectier operation when lo.

VAC_CONFIG R/W Congures VAC_DET output pin behavior. Totem pole conguration when hi. Open-drain conguration

when lo.

HSYNC R/W Forces half-synchronous rectier operation (LS FET only switching) when lo. Allows synchronous rectier

operation when hi. (ASYNC has priority when lo)

ASYNC R/W Disables synchronous rectier operation when lo. Allows synchronous rectier operation when hi. (Has

priority over HSYNC when lo)

EN_VREF R/W Enables VREF reference for external analog-to-digital converters when hi. Disables VREF reference when lo.

EN_TOP,

EN_SW

R/W EN_TOP = 0, EN_SW = 0 Load switch is disabled

EN_TOP = 1, EN_SW = x Load switch is enabled as an LDO

EN_TOP = 0, EN_SW = 1 Load switch is enabled as a switch

EN_PRE R/W Enables the precharge current source when hi. Current source is disabled when lo.

IND_SET R/W Congures part for indirect charge operation when hi. Congures part for topo or direct charge operation

when lo.

PACKP_LD_EN R/W Enables an internal 500 Ohm resistive load on PACKP when hi. Load is disconnected when lo.

OVP_ON R/W Forces the OVP FET to turn on as dened by the OVP_CS bit when hi. OVP is triggered only by high voltage

on PDC when lo.

EN_MOD R/W Turns on the MOD FETs when hi. Turns o the MOD FETs when lo.

PRESET <2:0> R/W Sets the level of the pre-charge current

AMUX <2:0> R/W Congures measurement point for AMUX pin

PDC_DIV_SEL R/W Changes the ratio of the PDC divider

ILIMSET <3:0> R/W Congures the indirect charging internal current limit

TCTRL <1:0> R/W Congures the behavior of the Thermistor driver (THERM pin)

DIS_VREF R/W Force the VREF output o

OVP_CS R/W Congures the OVP FET as 30mA current source (hi) or a switch (lo)

AMUX_10K_PLDN R/W Enable a 10K pull down load resistor on AMUX buer

VCORE_indset R/W Optimizes VCORE regulator for indirect charge mode.

HI_R R/W Increases the Ron for HS switches in the synchronous rectier

IB <2:0> R/W Congures the gain of the IBSENSE amplier (000=10X, 001=20X,…111=80X)

IO <2:0> R/W Congures the gain of the IOSENSE amplier (000=10X, 001=20X,…111=80X)

VOUTSET <6:0> R/W Congures the VOUT voltage setting for charge termination

PACKP_OVP R On-die over-voltage sensor status bit. Bit is hi during a PACKP over-voltage condition.

OVP R On-die over-voltage sensor status bit. Bit is hi during a PDC over-voltage condition.

TSD R On-die thermal sensor over-temperature status bit. Bit is hi during an over-temperature condition.

USBDET R Status bit that indicates voltage applied to USB pin. Bit is hi when USB voltage is detected.

ILIM R On-die current limit status bit. Bit is hi when current-limit is active.

TS51111

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April 17, 2015

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REG AD R/W B7 B6 B5 B4 B3 B2 B1 B0

CNFG 0x0 R/W 0x00 VAC_CNFG HSYNC ASYNC EN_VREF EN_TOP EN_PRE EN_SW

CNFG2 0x1 R/W 0x00 IND_SET

PACKP_LD_

OVP_ON EN_MOD

PRESET 0x2 R/W 0x00 PRESET<2> PRESET<1> PRESET<0>

AMUX 0x3 R/W 0x00

PDC_DIV_

SEL

AMUX<2> AMUX<1> AMUX<0>

0x4 R/W 0x00 ILIMSET<3> ILIMSET<2> ILIMSET<1> ILIMSET<0>

TCTRL 0x5 R/W 0x00 HI_R

VCORE_

indset

AMUX_10K_

PLDN

EN_OVP_CS DIS_VREF TCTRL<1> TCTRL<0>

ISET 0x6 R/W 0x00 IB<2> IB<1> IB<0> IO<2> IO<1> IO<0>

0x7 R/W 0x00

FAULT 0x8 R -- PACKP_OVP OVP TSD USBDET ILIM

Device address is 0x48

C Interface Timing Requirements

Symbol Parameter

Standard Mode Fast Mode(1)

Unit

Min Max Min Max

fscl I

C clock frequency 0 100 0 400 kHz

tsch I

C clock high time 4 0.6 μs

tscl I

C clock low time 4.7 1.3 μs

tsp

(2)

C tolerable spike time 0 50 0 50 ns

tsds I

C serial data setup time 250 250 ns

tsdh I

C serial data hold time 0 0 μs

ticr

(2)

C input rise time 1000 300 ns

ticf

(2)

C input fall time 300 300 ns

tocf

(2)

C output fall time; 10 pF to 400 pF bus 300 300 ns

tbuf I

C bus free time between Stop and Start 4.7 1.3 μs

tsts I

C Start or repeated Start condition setup time 4.7 0.6 μs

tsth I

C Start or repeated Start condition hold time 4 0.6 μs

tsps

(2)

C Stop condition setup time 4 0.6 μs

(1) The I²C interface will operate in either standard or fast mode.

(2) Parameters not tested in production.

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P22

TS51111-M22WCSR

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Manufacturer:

Semtech

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Wireless Charging ICs WirelessPWR Receiver Direct Charging IC

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TS51111-M22WCSR

TS51111-M22WCSR

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