TEA19051BAAT/1J Datasheet TEA19051BAAT/1J | P16-P18

NXP Semiconductors

TEA19051BT

USB-PD 2.0/USB-PD 3.0/QC 2.0/QC 3.0/QC 4 (+) controller for SMPS

Product data sheet Rev. 1 — 13 February 2018

16 / 36

8.10.6 MTP configuration

The TEA19051BT is configurable via MTP. The different types are defined in Section 15.

Table 4 gives an overview of the programmability with their minimum/maximum values.

Table 4. MTP configuration options

Function Options minimum

level

maximum

level

step size

default output voltage - 3 V 10 V 50 mV

default maximum output current - 0.3 A 5 A 20 mA

GPIO1 disable; NTC;

NTC with OTP

[1]

; Supply

- - -

GPIO1 protection level - 62 °C 111 °C variable but

< 5 °C

GPIO2 disable; NTC;

NTC with OTP

[1]

; Supply

- - -

GPIO2 protection level - 62 °C 111 °C variable but

< 5 °C

OTP internal - 27 °C 135 °C 4.3 °C

external sense resistor(R

sns

) - 2 mΩ 22 mΩ 0.02 mΩ

external resistor divider VCC/

VSNS (=DIV)

[2]

8.325; 2.5; 5.476 - - -

cable compensation

[3]

- 0 mV/A R

sns

* DIV * 8

V/A

variable

CC mode or OCP mode OCP-mode/CC-mode - - -

PDO1 5 V

3 A

- - -

PDO2; PDO3; PDO4; PDO5;

PDO6; PDO7

3 V

0.3 A

20 V

10 A

0.05 V

0.01 A

OVP level (PDO)

[4]

120 %; 125 %; 130 % - - -

UVP level (PDO)

[4]

off; 60 %; 70 %; 80 % - - -

UVP level (APDO)

[4]

off; 70 %; 80 %; 90 % - - -

PDO QC enable

[4]

TRUE/FALSE - - -

PDO PPS enable

[5]

TRUE/FALSE - - -

QC3.0 cable compensation

enable

TRUE/FALSE - - -

QC3.0 maximum power - 0 W 102.3 W 0.1 W

USB3.0 enable TRUE/FALSE - - -

power limit PPS TRUE/FALSE - - -

minimum voltage APDO - 3.3 V 20 V -

[1] The NTC readout and OTP levels are defined with an NTC of 47 kΩ and a B-constant of 4108.

[2] Maximum output voltage for 5.476 is 13 V. Maximum output voltage for 2.5 V is 6 V.

[3] Cable compensation above 200 mV/A is not recommended.

[4] Can be selected for each PDO individually.

[5] Maximum 4 PDOs can be an APDO.

NXP Semiconductors

TEA19051BT

USB-PD 2.0/USB-PD 3.0/QC 2.0/QC 3.0/QC 4 (+) controller for SMPS

Product data sheet Rev. 1 — 13 February 2018

17 / 36

8.11 Protections

Table 5 gives an overview of the available protections. All protections except the OGP

operate in safe restart mode. All protections except UVP are implemented in hardware.

When a fault condition occurs, the load switch is immediately opened. When the fault

condition is removed, the load switch is closed again. The VCC is set to default and the

minimum delay defined in MTP is passed.

8.11.1 Protections overview

Table 5. Overview of protections

Protection Description Implementation Default filter

UVLO undervoltage lockout hardware -

OVP overvoltage protection hardware 30 μs

OCP overcurrent protection hardware 20 ms

OTP (internal) overtemperature

protection

hardware -

2 times OTP

(external)

overtemperature protection hardware -

OGP open-ground protection hardware -

UVP undervoltage protection software -

OSUP open-supply (VCC) protection hardware -

OV_DP_DM overvoltage protection DP and DM pins hardware 127 μs

OV_CC1_CC2 overvoltage protection CC1 and CC2 pins hardware 127 μs

8.11.2 Secondary side safe restart protection

When a safe restart protection is triggered, the load switch is immediately turned off.

The voltage loop is kept on and is regulated to the initial value (5 V typical). As the

load switch is immediately turned off before the regulation reduces the output power,

the VCC voltage may increase. To ensure that the VCC voltage has dropped to a safe

value, before the load switch is turned on again, V

is discharged via an internal current

source of 20 mA if it exceeds the level of 1.05 × V

default

When the protection is triggered, the safe restart timer is started. After 1 s (default

value), a restart sequence is performed, which reinitializes all circuits. Optionally, most

protections can be changed to latched protections in MTP.

8.11.3 UnderVoltage LockOut (UVLO)

The level at which the UVLO protection is triggered is fixed. When V

drops to below

the UVLO level, the load switch is immediately turned off. All settings are reset to their

initial values. Internal circuitries are disabled.

NXP Semiconductors

TEA19051BT

USB-PD 2.0/USB-PD 3.0/QC 2.0/QC 3.0/QC 4 (+) controller for SMPS

Product data sheet Rev. 1 — 13 February 2018

18 / 36

8.11.4 OverVoltage Protection (OVP)

The OVP level is set as a percentage of the requested output voltage level. The OVP

level is set to default 125 % (V < 9 V) or 120 % (V ≥ 9 V) of the programmed output

voltage. When V

continuously exceeds this level for longer than the minimum OVP

time (default 30 μs), the OVP protection is triggered.

8.11.5 OverCurrent Protection (OCP)

The default TEA19051BT setting is CC mode. In CC mode, the current loop defines the

maximum current. Instead, the OCP mode can be selected via MTP. The OCP level can

be programmed individually for each PDO. OCP is only triggered if the OCP mode is

set for the corresponding PDO and the output current is continuously higher than the

programmed current level for more than the programmed OCP blanking time.

8.11.6 OverTemperature Protection (OTP)

8.11.6.1 Internal OTP

When the internally measured temperature exceeds the programmed OTP setting, OTP

is triggered, unless the protection is disabled in MTP. The temperature level can be

defined in MTP. The default value is 113 °C.

Furthermore, the internal temperature sensor can be used to measure the temperature.

The measured temperature can be sent via USB-PD.

8.11.6.2 External OTP

When the mode "NTC+OTP" is selected for GPIO1 (cable connector temperature) or

GPIO2 (adapter temperature) in the MTP and the externally measured temperature

exceeds the programmed OTP setting, OTP is triggered. The temperature level can be

defined in MTP. The default value is 90 °C (see Section 15 and Table 4).

8.11.7 Open-Ground Protection (OGP)

An open-ground event is detected by monitoring the difference in voltage between

the GND and SGND pins. When the difference is greater than the specified maximum

voltage difference, OGP is triggered, unless the protection is disabled.

This feature protects the application from supplying high currents to the load when the

ground pins of the sense resistor are not properly connected.

8.11.8 Open-SUpply Protection (OSUP)

When the IC is not supplied via the VCC pin any more, the voltage on the OPTO pin is

used to open the external load switch. Opening the external load switch prevents that the

load is damaged if the VCC pin is disconnected.

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