TI-TPS55162-Q1：36V，1A，汽车级同步升降压稳压器

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"TI-TPS55162-Q1.pdf" TI的TPS5516x-Q1系列是一款专为汽车应用设计的高效36V、1A、2MHz单电感同步升压和降压稳压器。这款集成电路在-40°C至+125°C的宽环境温度范围内工作，并符合AEC-Q100一级标准，具有良好的ESD保护性能。该系列包括TPS55160-Q1、TPS55162-Q1和TPS55165-Q1三款产品，每款都有其特定的输出电压配置。 TPS55162-Q1允许输入电压范围从2V到36V，支持5V或12V的固定输出电压，以及TPS55160-Q1和TPS55162-Q1的5.7V至9V可调输出电压。该器件在5V输出电压且输入电压高于5.3V时，能提供高达1A的输出电流。在更低的输入电压下，输出电流会相应减小，例如在3.8V输入电压时可提供0.8A，在2.3V输入电压时则为0.4A。 TPS5516x-Q1系列的一大特点是高效率，最高可达85%，这使得它们在电源管理中非常节能。此外，该器件还包括一个电源保持功能（Power Latch），能够在断电后保持输出状态，以及低功耗模式，有助于在不需全功率运行时节省能源。电路设计中，BST1和BST2是内部开关的栅极驱动信号，L1和L2是用于升压和降压转换的电感器。VINP和VINL是输入电源引脚，VOUT是输出电压引脚，PG是电源良好信号，VOUT_SENSE是输出电压检测引脚，SS_EN是软启动输入，VREG和VREG_Q是内部基准电压，VOS_FB则是反馈电压比较器的输入。此外，还有PGND、GND、PG_DLY等控制和接地引脚，以及电容、电阻等元件用于滤波和稳定电路。在实际应用中，如图所示，需要配合外部电容（如4.7μF和22μF）以及小值电容（100nF和0.1μF）来确保稳定性和瞬态响应。100kΩ的RDLY电阻用于调整电源延迟时间。用户手册SLVSD46提供了详细的电路配置和应用信息，帮助设计者正确使用此芯片以满足不同系统需求。 TPS55162-Q1是适用于汽车电子系统的高性能电源解决方案，其灵活性和高效性使其在各种电压转换场景中都能表现出色。结合适当的外围电路，它能为设计者提供可靠的电源管理方案。

TPS55160-Q1

TPS55162-Q1

TPS55165-Q1

ZHCSH41 –NOVEMBER 2017

www.ti.com.cn

Electrical Characteristics — Buck-Boost (continued)

Over operating free air temperature range –40°C ≤ T

≤ 125°C and maximum junction temperature T

= 150°C and

recommended operating input supply range (unless otherwise noted)

(1)

POS PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

3.1a

OUT_5V

Max output current in

normal operation for

VOUT in 5-V setting

TPS55165-Q1 with

VOS_FB pin

connected to GND

6 V ≤ V

; DCR ≤ 40 mΩ 1 A

3.1b 3.8 V ≤ V

≤ 6 V; DCR ≤ 40 mΩ 800

mA3.1c 2.3 V ≤ V

< 3.8 V; DCR ≤ 40 mΩ 400

3.1d 2 V ≤ V

< 2.3 V; DCR ≤ 40 mΩ 200

3.1e

OUT_12V

Max output current in

normal operation for

VOUT in 12-V setting

TPS55165-Q1 with

VOS_FB pin

connected to

VREG

14 V ≤ V

; DCR ≤ 40 mΩ 800

3.1f 9.2 V≤ V

≤ 14 V; DCR ≤ 40 mΩ 600

3.1g 5.6 V≤ V

< 9.2 V; DCR ≤ 40 mΩ 300

3.1h 4 V ≤ V

< 5.6 V; DCR ≤ 40 mΩ 150

3.2a

OUT_adj_VoutH

Max output current in

normal operation for

adjustable

configuration, 8V <

OUT

≤ 9V

TPS55160-Q1 and

TPS55162-Q1,

8V < V

OUT

≤ 9V

OUT

+ 2V) ≤ V

; DCR ≤ 40 mΩ 800

3.2b

0.76 * V

OUT

≤ V

≤ (V

OUT

+ 2V);

DCR ≤ 40 mΩ

600 mA

3.2c

0.46 * V

OUT

≤ V

< 0.76 * V

OUT

;

DCR ≤ 40 mΩ

300 mA

3.2d

3.6 V ≤ V

< 0.46 * V

OUT

; DCR ≤

40 mΩ

150 mA

3.2e

OUT_adj_VoutL

Max output current in

normal operation for

adjustable

configuration, 5.7V ≤

OUT

≤ 8V

TPS55160-Q1 and

TPS55162-Q1,

5.7V ≤ V

OUT

≤ 8V

OUT

+ 1V) ≤ V

; DCR ≤ 40 mΩ 800

3.2f

0.76 * V

OUT

≤ V

< (V

OUT

+ 1V);

DCR ≤ 40 mΩ

600

3.2g

3.6 V ≤ V

< 0.76 * V

OUT

; DCR ≤

40 mΩ

300

3.11 I

OUT_PS

Max output current in

low-power mode

3.3

dson_

BUCK_HS

On-resistance buck-

stage high-side (HS)

FET

150 300 mΩ

3.4

dson_

BUCK_LS

On-resistance buck-

stage low-side (LS)

FET

150 300 mΩ

3.5

dson_

BOOST_HS

On-resistance boost-

stage HS FET

150 300 mΩ

3.6

dson_

BOOST_LS

On-resistance boost-

stage LS FET

150 300 mΩ

3.7 I

SW_limit

Peak current limit for

HS buck, LS buck, and

LS boost

Device in normal operating mode 2 3.5 4.5 A

3.9 I

CoilAvglimit

Average coil current

limit

Device in normal operating mode; L = 4.7 µH 2 2.8 A

3.20a V

TLDSR_5V_100

Transient load step

response for VOUT in

5-V setting

TPS55165-Q1: Measured at VOUT_SENSE pin;

VOS_FB pin connected to GND; V

= 12 V, I

OUT

= 0.1

A to 0.5 A, T

= T

= 1 µs, C

OUT

= 47 µF

3.20b V

TLDSR_5V_500

Transient load step

response for VOUT in

5-V setting

TPS55165-Q1: Measured at VOUT_SENSE pin;

VOS_FB pin connected to GND; V

= 12 V, I

OUT

= 0.5

A to 1 A, T

= T

= 1 µs, C

OUT

= 47 µF

3.21a V

RIPPLE_5V

Output ripple for VOUT

in 5-V setting

TPS55165-Q1: Measured at VOUT_SENSE pin;

VOS_FB pin connected to GND; V

= 12V, I

OUT

= 1 A,

SS_EN = low

5.5 mVpp

3.21b V

RIPPLE_12V

Output ripple for VOUT

in 12-V setting

TPS55165-Q1: Measured at VOUT_SENSE pin;

VOS_FB pin connected to VREG; V

= 14V, I

OUT

= 0.8

A, SS_EN = low

5 mVpp

TPS55160-Q1

TPS55162-Q1

TPS55165-Q1

www.ti.com.cn

ZHCSH41 –NOVEMBER 2017

(1) The term V

refers to the voltage on all supply pins VINP and VINL (unless otherwise noted).

7.9 Electrical Characteristics — Undervoltage and Overvoltage Lockout

Over operating free air temperature range –40°C ≤ T

≤ 125°C and maximum junction temperature T

= 150°C and

recommended operating input supply range (unless otherwise noted)

(1)

POS PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

4.1a

UVLO

Undervoltage (UV)

lockout threshold

voltage decreasing;

Device turned-off when

< UVLO

Device is in normal

operating mode

TPS55165-Q1 with

VOS_FB pin connected to

GND

1.8 2 V

4.1b

TPS55165-Q1 with

VOS_FB pin connected to

VREG

3.6 4 V

4.1c UVLO

Undervoltage (UV)

lockout threshold

voltage decreasing;

Device turned-off when

< UVLO

Device is in normal

operating mode

TPS55160-Q1 and

TPS55162-Q1

1.8 2 V

4.2 OVLO

Overvoltage (OV)

lockout threshold

voltage increasing; Device stops switching when

> OVLO, and recovers when V

< OVLO and IGN

= 1

Device is in normal operating mode

36 40 V

4.9 V

OUT_PROT_OV

VOUT OV protection Device is in normal operating mode 110% 125%

(1) The term V

refers to the voltage on all supply pins VINP and VINL (unless otherwise noted).

7.10 Electrical Characteristics — IGN Wakeup

Over operating free air temperature range –40°C ≤ T

≤ 125°C and maximum junction temperature T

= 150°C and

recommended operating input supply range (unless otherwise noted)

(1)

POS PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

5.1a IGN

WAKE

IGN wake-up threshold V

IGN

voltage increasing to wake-up device 2.5 3.1 3.7 V

5.1b IGN

IGN power-down threshold

IGN

voltage decreasing to power-down

device

1.5 2.1 2.7 V

5.2 IGN

HYST

IGN wake-up hysteresis 0.76 1 1.35 V

5.3a I_IGN

36V

IGN pin forward input current

at 36 V

IGN

= 36 V 11 17 30 µA

5.3b I_IGN

12V

IGN pin forward input current

at 12 V

IGN

= 12 V 2.3 3.7 7.1 µA

5.5 I_IGN

rev

IGN pin reverse current V

IGN

= –7 V 370 650 µA

(1) The term V

refers to the voltage on all supply pins VINP and VINL (unless otherwise noted).

7.11 Electrical Characteristics — Logic Pins PS, IGN_PWRL, SS_EN

Over operating free air temperature range –40°C ≤ T

≤ 125°C and maximum junction temperature T

= 150°C and

recommended operating input supply range (unless otherwise noted)

(1)

POS PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

6.1 V

LOGIC_IN_HIGH

Logic input low-to-high

threshold for pins

IGN_PWRL PS, and SS_EN

Device in power-up condition 2 V

6.2 V

LOGIC_IN_LOW

Logic Input high-to-low

threshold for pins

IGN_PWRL, PS, and SS_EN

Device in power-up condition 0.74 V

6.3 V

LOGIC_IN_HYST

Logic input hysteresis for

pins IGN_PWRL, PS, and

SS_EN

Device in power-up condition 0.15 0.39 V

6.4 R

LOGIC_IN_PD

Pulldown resistance on PS

pin to GND

35 70 111 kΩ

6.5 I

pull-up_SS_EN

Pullup current on SS_EN pin 85 266 µA

6.6 I

pull-up_IGN_PWRL

Pullup current on

IGN_PWRL pin

1 8 µA

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