TI TPS25865-Q1: 高效汽车级双USB Type-A充电端口转换器

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TI-TPS25865-Q1和TPS25864-Q1是专为汽车应用设计的高性能双USB Type-A充电端口转换器，由Texas Instruments (TI)公司制造。这些器件具有显著的特性，包括： 1. **严格的行业标准符合性**：符合AEC-Q100标准，达到温度等级1，工作温度范围宽广（-40°C至+125°C），同时具备高电磁兼容性（EMI）等级，如HBMESD分类等级H2和CDMESD分类等级C5。它们还满足CISPR255类标准，通过HotRod封装减少开关节点振铃，展频技术有助于降低峰值发射。 2. **高效能转换器**：TPS25865-Q1支持高达95.2%的效率，即使在400kHz工作频率下，当VIN=13.5V，两个USB端口（IPA_BUS=2.4A，IPB_BUS=2.4A）满载时也能实现。它配备了低阻抗的MOSFET，工作电压范围广泛，能承受高达36V的输入，并可调整频率在200kHz至800kHz（TPS25865-Q1）或200kHz至3MHz（TPS25864-Q1）。 3. **内置电源管理**：内部设计有低RDS(ON)的USB功率MOSFET，提供高精度的USB电流控制，最大电流可达2.73A，误差在±10%以内。此外，还有5.1V的辅助负载电源（OUT）和线性压降补偿，可在2.4A负载下保持90mV的电压损失。 4. **USB标准兼容性**：设备内置了多种USB功能，如自动DCP模式，支持BC1.2和YD/T15912009标准的短路保护，以及1.2V和2.7V分压器模式。还具备甩负荷和可编程温度适应能力，确保在极端条件下稳定工作。 5. **小型化封装**：两种型号均采用VQFN-HR(25)封装，尺寸紧凑，仅为3.50mm×4.50mm，适合空间受限的应用。 6. **简化版原理图**：文档提供了简化版原理图，帮助用户理解和应用这些器件，特别是针对不同负载电流的效率曲线。 TI-TPS25865-Q1和TPS25864-Q1是理想的汽车电子解决方案，适用于需要高效、低EMI和严格温度控制的USB充电端口应用，如车载充电和媒体中心。其集成的设计减少了外部组件的需求，简化了系统设计，提高了系统的可靠性和整体性能。

8.4 Thermal Information

THERMAL METRIC

(1)

(2)

TPS2586x-Q1

UNITRPQ (VQFN)

25 PINS

θJA

Junction-to-ambient thermal resistance 37.7 °C/W

θJC(top)

Junction-to-case (top) thermal resistance 17.2 °C/W

θJB

Junction-to-board thermal resistance 8.8 °C/W

Junction-to-top characterization parameter 0.3 °C/W

Junction-to-board characterization parameter 8.8 °C/W

θJC(bot)

Junction-to-case (bottom) thermal resistance 20.3 °C/W

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report.

(2) Power rating at a specific ambient temperature T

should be determined with a maximum junction temperature of 150 °C.

8.5 Electrical Characteristics

Limits apply over the recommended operating junction temperature (T

) range of -40°C to +150°C; V

= 13.5 V, f

= 400

kHz, VSET short to GND unless otherwise stated. Minimum and maximum limits are specified through test, design or

statistical correlation. Typical values represent the most likely parametric norm at T

= 25°C, and are provided for reference

purposes only.

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

SUPPLY VOLTAGE (IN PIN)

Shutdown quiescent current;

measured at IN pin.

VEN/UV = 0, -40℃ ≤ T

≤ 85℃

34 63 uA

Operating quiescent current (DCDC

disable)

= V

SENSE

, CFG1&CFG3 = open,

-40℃ ≤ T

≤ 85℃

200 µA

OVLO_R

Voltage on VIN pin when buck

regulator stops switching

26.6 27.5 28.4 V

OVLO_HYS

Hysteresis 0.5 V

ENABLE AND UVLO (EN/UVLO PIN)

EN/UVLO_R

Rising threshold for not in External

UVLO

EN/UV

rising threshold 1.26 1.3 1.34 V

EN/UVLO_HYS

Hysteresis V

EN/UVLO

falling 100 mV

BOOTSTRAP

BTST_UVLO

Bootstrap voltage UVLO threshold 2.2 V

BOOT

Bootstrap pull-up resistence VSENSE - BOOT = 0.1 V 7.7

Ω

BUCK REGULATOR

L-SC-HS

High-side current limit BOOT - SW = 5 V 10.2 11.4 12.6 A

L-SC-LS

Low-side current limit SENSE = 5 V 8.5 10 11.5 A

L-NEG-LS

Low-side negative current limit SENSE = 5 V -7 -5 -3 A

Zero current detector threshold 0.01 A

SENSE

BUCK Output voltage

CFG1 or CFG3 pulldown resistance =

5.1KΩ, VSET float or pull up to

SENSE

, T

= 25℃

-1% 5.1 +1% V

CFG1 or CFG3 pulldown resistance =

5.1KΩ, VSET short to AGND, T

25℃

-1% 5.17 +1% V

CFG1 or CFG3 pulldown resistance =

5.1KΩ, R

VSET

= 40.2KΩ, T

= 25℃

-1% 5.3 +1% V

CFG1 or CFG3 pulldown resistance =

5.1KΩ, R

VSET

= 80.6KΩ, T

= 25℃

-1% 5.4 +1% V

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TPS25865-Q1, TPS25864-Q1

ZHCSMS4B – NOVEMBER 2020 – REVISED SEPTEMBER 2021

Submit Document Feedback

Product Folder Links: TPS25865-Q1 TPS25864-Q1

8.5 Electrical Characteristics (continued)

Limits apply over the recommended operating junction temperature (T

) range of -40°C to +150°C; V

= 13.5 V, f

= 400

kHz, VSET short to GND unless otherwise stated. Minimum and maximum limits are specified through test, design or

statistical correlation. Typical values represent the most likely parametric norm at T

= 25°C, and are provided for reference

purposes only.

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

SENSE

BUCK Output voltage accuracy

CFG1 or CFG3 pulldown resistance =

, -40℃ ≤ T

≤ 150℃

–2

2 %

DCDC_UVLO_R

SENSE input level to enable DCDC

switching

SENSE

rising, CFG1 or CFG3 pull

down resistance = 5.1KΩ

3.85 4 4.15 V

DCDC_UVLO_HYS

Hysteresis

SENSE

falling, CFG1 or CFG3 pull

down resistance = 5.1KΩ

0.4 V

DROP

Dropout voltage ( V

-V

SENSE

)

= V

SENSE

+ V

DROP,

SENS

= 5.1 V,

PA_BUS

= 2.4A, I

PB_BUS

= 2.4A

300 mV

DS-ON-HS

High-side MOSFET ON-resistance

PA_BUS

= 2.4 A, I

PB_BUS

= 2.4 A, BOOT

- SW = 5 V, -40℃≤ T

≤ 150℃

18 34

mΩ

DS-ON-LS

Low-side MOSFET ON-resistance

PA_BUS

= 2.4 A, I

PB_BUS

= 2.4 A,

SENSE

= 5 V, -40℃ ≤ T

≤150℃

9.5 18.5

mΩ

POWER SWITCH AND CURRENT LIMIT

DS-ON_USB

USB Load Switch MOSFET ON-

resistance

PA_BUS

= 2.4 A, I

PB_BUS

= 2.4 A; -40℃

≤ T

≤ 150℃

6.8 11.73

mΩ

DS-ON_OUT

OUT Load Switch MOSFET ON-

resistance

OUT

= 0.3 A 230

mΩ

USBLS_UVLO_R

Voltage on SENSE pin that will enable

the USB Load Switch

3.95 4.1 4.25 V

USBLS_UVLO_HYS

Hysteresis 200 mV

OS_HI

BUS output short-circuit secondary

current limit

3938 4376 4814 mA

= 25℃

4157 4376 4595 mA

OS_BUS

BUS output short-circuit current limit

2461 2735 3009 mA

= 25℃

2598 2735 2872 mA

OS_OUT

OUT output short-circuit current limit Short circuit current limit 390 450 495 mA

CABLE COMPENSATION VOLTAGE

DROP_COM

Cable compensation voltage

PA_BUS

or I

PB_BUS

= 2.4A, VSET= GND

(set 5.17V output)

70 90 110 mV

BC 1.2 DOWNSTREAM CHARGING PORT

DPM_SHORT

DP and DM shorting resistance 70 200

DIVIDER 3 MODE

DP_DIV3

DP output voltage 2.57 2.7 2.84 V

DM_DIV3

DM output voltage 2.57 2.7 2.84 V

DP_DIV3

DP output impedance

DP_IN

= –5 µA

24 30 36

kΩ

DM_DIV3

DM output impedance

DM_IN

= –5 µA

24 30 36

kΩ

1.2-V MODE

DP_1.2V

DP output voltage 1.12 1.2 1.26 V

DM_1.2V

DM output voltage 1.12 1.2 1.26 V

DP_1.2V

DP output impedance

DP_IN

= –5 µA

84 100 126

kΩ

DM_1.2V

DM output impedance

DM_IN

= –5 µA

84 100 126

kΩ

FREQ/SYNC THRESHOLD

IH_FREQ/SYNC

FREQ/SYNC high threshold for

external clock synchronization

Amplitude of SYNC clock AC signal

(measured at FREQ/SYNC pin)

2 V

IL_FREQ/SYNC

FREQ/SYNC low threshold for

external clock synchronization

Amplitude of SYNC clock AC signal

(measured at FREQ/SYNC pin)

0.8 V

TPS25865-Q1, TPS25864-Q1

ZHCSMS4B – NOVEMBER 2020 – REVISED SEPTEMBER 2021

www.ti.com.cn

10 Submit Document Feedback

Product Folder Links: TPS25865-Q1 TPS25864-Q1

8.5 Electrical Characteristics (continued)

Limits apply over the recommended operating junction temperature (T

) range of -40°C to +150°C; V

= 13.5 V, f

= 400

kHz, VSET short to GND unless otherwise stated. Minimum and maximum limits are specified through test, design or

statistical correlation. Typical values represent the most likely parametric norm at T

= 25°C, and are provided for reference

purposes only.

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

TEMPERATURE SENSING

WARN_HIGH

Temperature warning threshold rising As percentage to V

SENSE

0.475 0.5 0.525 V/V

WARN_HYS

Hysteresis As percentage to V

SENSE

0.1 V/V

HOT_HIGH

Temperature Hot assert threshold

rising to reduce SENS voltage

As percentage to V

SENSE

0.618 0.65 0.683 V/V

HOT_HYS

Hysteresis As percentage to V

SENSE

0.1 V/V

R_VSENS

SENSE

voltage decay when

Temperature Hot assert

TS pin voltage rise above 0.65 *

SENSE

4.77 V

THERMAL SHUTDOWN

LS_SD

USB Load Switch Over Temperature

Shutdown threshold 160 °C

Recovery threshold 150 °C

Thermal shutdown

Shutdown threshold 166 °C

Recovery threshold 154 °C

8.6 Timing Requirements

Over the recommended operating junction temperature range of -40 °C to 150 °C (unless otherwise noted)

MIN NOM MAX UNIT

BUS DISCHARGE

POWER SWITCH TIMING

IOS_HI_DEG

Deglitch time for USB power switch current

limit enable

USB port enter overcurrent 1.228 2.048 2.867 ms

IOS_HI_RST

MFI OCP reset timing 9.6 16 22.4 ms

r_USB

PA_BUS, PB_BUS voltage rise time

= 1 µF, R

= 100 Ω (measured from 10%

to 90% of final value)

1.67 ms

f_USB

PA_BUS, PB_BUS voltage fall time

= 1 µF, R

= 100 Ω (measured from 90%

to 10% of final value)

0.49 ms

on_USB

PA_BUS, PB_BUS voltage turnon-time

= 1 µF, R

= 100 Ω

2.59 ms

off_USB

PA_BUS, PB_BUS voltage turnoff-time

= 1 µF, R

= 100 Ω

2.07 ms

IOS_USB

PA_BUS, PB_BUS short-circuit response

time

= 1 µF, R

= 1 Ω

1 us

r_OUT

OUT voltage rise time

= 1 µF, R

= 100 Ω (measured from 10%

to 90% of final value)

0.12 0.2 0.28 ms

f_OUT

OUT voltage fall time

= 1 µF, R

= 100 Ω (measured from 90%

to 10% of final value)

0.16 0.22 0.28 ms

on_OUT

OUT voltage turnon-time

= 1 µF, R

= 100 Ω

0.6 1.1 1.65 ms

off_OUT

OUT voltage turnoff-time

= 1 µF, R

= 100 Ω

0.45 0.54 0.62 ms

IOS_OUT

OUT short-circuit response time

= 1 µF, R

= 1 Ω

1.4 4 us

HICCUP MODE

HICP_ON

OUT, PA_BUS, PB_BUS output hiccup mode

ON time

OC, V

OUT

, V

PA_BUS

, V

PB_BUS

drop 10% 2.94 4.1 5.42 ms

HICP_OFF

OUT, PA_BUS, PB_BUS output hiccup mode

OFF time

OC, OUT, PA_BUS, PB_BUS connect to

GND

367 524 715 ms

www.ti.com.cn

TPS25865-Q1, TPS25864-Q1

ZHCSMS4B – NOVEMBER 2020 – REVISED SEPTEMBER 2021

Submit Document Feedback

Product Folder Links: TPS25865-Q1 TPS25864-Q1

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