TPS22998 [TI]
5.5V、10A、导通电阻为 4mΩ 的负载开关;型号: | TPS22998 |
厂家: | TEXAS INSTRUMENTS |
描述: | 5.5V、10A、导通电阻为 4mΩ 的负载开关 开关 |
文件: | 总22页 (文件大小:1650K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
TPS22998
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
TPS22998 5.5V、10A、导通电阻为4mΩ 的负载开关
1 特性
3 说明
• 输入电压范围(VIN):0.2 V 至5.5V
• 偏置电压范围:2.2 V 至5.5V
• 最大持续电流:10A
• 导通电阻(RON):4mΩ(典型值)
• 带三态引脚的可调压摆率
• 快速输出放电(QOD):50Ω
• 热关断
TPS22998 是一款单通道负载开关,具有可配置上升时
间,从而可更大限度地降低浪涌电流。此器件包含一个
可在 0.2V 至 5.5V 输入电压范围内运行的 N 沟道
MOSFET,并且支持10A 的最大连续电流。
开关可由一个打开和关闭输入 (ON) 控制,此输入可与
低压控制信号 (VIH = 0.9V) 直接连接。TPS22998 在开
关关闭时具有固定快速输出放电,将输出下拉至接地。
• 低功耗:
TPS22998 采用 10 引脚 WQFN 封装 (RYZ)(1.5mm
× 2mm,间距为 0.5mm)并可在自然通风条件下的 –
40°C 至+105°C 温度范围运行。
– 导通状态(IQ):15μA(典型值)
– 关闭状态(ISD):3μA(典型值)
2 应用
器件信息
封装(1)
• 固态硬盘
器件型号
TPS22998
封装尺寸(标称值)
• PC 和笔记本电脑
• 工业PC
• 光学模块
WQFN (10)
1.5mm × 2.0mm
(1) 要了解所有可用封装,请参见产品说明书末尾的可订购产品附
录。
TPS22998 典型应用
TPS22998 方框图
本文档旨在为方便起见,提供有关TI 产品中文版本的信息,以确认产品的概要。有关适用的官方英文版本的最新信息,请访问
www.ti.com,其内容始终优先。TI 不保证翻译的准确性和有效性。在实际设计之前,请务必参考最新版本的英文版本。
English Data Sheet: SLVSG05
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
Table of Contents
7.2 Functional Block Diagram......................................... 11
7.3 Feature Description...................................................11
7.4 Device Functional Modes..........................................12
8 Application and Implementation..................................13
8.1 Application Information............................................. 13
8.2 Typical Application.................................................... 13
9 Power Supply Recommendations................................15
10 Layout...........................................................................15
10.1 Layout Guidelines................................................... 15
10.2 Layout Example...................................................... 15
11 Device and Documentation Support..........................16
11.1 接收文档更新通知................................................... 16
11.2 支持资源..................................................................16
11.3 Trademarks............................................................. 16
11.4 Electrostatic Discharge Caution..............................16
11.5 术语表..................................................................... 16
12 Mechanical, Packaging, and Orderable
1 特性................................................................................... 1
2 应用................................................................................... 1
3 说明................................................................................... 1
4 Revision History.............................................................. 2
5 Pin Configuration and Functions...................................3
6 Specifications.................................................................. 4
6.1 Absolute Maximum Ratings........................................ 4
6.2 ESD Ratings............................................................... 4
6.3 Recommended Operating Conditions.........................4
6.4 Thermal Information....................................................4
6.5 Electrical Characteristics (VBIAS = 5 V)..................... 5
6.6 Electrical Characteristics (VBIAS = 3.3 V).................. 5
6.7 Electrical Characteristics (VBIAS = 2.2 V).................. 6
6.8 Switching Characteristics (VBIAS = 2.2 V to 5 V).......7
6.9 Timing Diagram...........................................................8
6.10 Typical Characteristics..............................................9
7 Detailed Description......................................................11
7.1 Overview................................................................... 11
Information.................................................................... 17
4 Revision History
注:以前版本的页码可能与当前版本的页码不同
Changes from Revision * (October 2021) to Revision A (December 2021)
Page
• 将数据表状态从“预告信息”更改为“量产数据”.............................................................................................1
Copyright © 2022 Texas Instruments Incorporated
2
Submit Document Feedback
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
5 Pin Configuration and Functions
图5-1. TPS22998 RYZ Package, 10-Pin WQFN (Top View)
表5-1. Pin Functions
PIN
I/O(1)
DESCRIPTION
NAME
NO.
VBIAS
1
I
I
Device bias supply
VIN
GND
VOUT
CT
2, 3, 4
Switch input
5
6, 7, 8
9
G
O
I
Device ground
Switch output
Slew rate control –can be pulled up, left floating, or tie to ground
ON
10
I
Enable pin
(1) I = Input, O = Output, I/O = Input or Output, G = Ground, P = Power.
Copyright © 2022 Texas Instruments Incorporated
Submit Document Feedback
3
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)(1)
MIN
–0.3
–0.3
–0.3
MAX
6
UNIT
VIN
Input Voltage
V
V
V
A
VBIAS
VON, VCT
IMAX
Bias Voltage
6
Control Pin Voltage
Maximum Current
6
10
Internally
Limited
TJ
Junction temperature
Storage temperature
°C
°C
Tstg
150
–65
(1) Operation outside the Absolute Maximum Ratings may cause permanent device damage. Absolute Maximum Ratings do not imply
functional operation of the device at these or any other conditions beyond those listed under Recommended Operating Conditions. If
used outside the Recommended Operating Conditions but within the Absolute Maximum Ratings, the device may not be fully
functional, and this may affect device reliability, functionality, performance, and shorten the device lifetime.
6.2 ESD Ratings
VALUE
UNIT
Human body model (HBM), per ANSI/ESDA/
JEDEC JS-001(1)
±2000
V(ESD)
Electrostatic discharge
V
Charged device model (CDM), per ANSI/ESDA/
JEDEC JS-002(2)
±1000
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
0.2
2.2
0
NOM
MAX
5.5
UNIT
V
VIN
Input Voltage
VBIAS
VCT
TA
Bias Voltage
5.5
V
Control Pin Voltage
Ambient Temperature
5.5
V
105
°C
–40
6.4 Thermal Information
TPS22998
THERMAL METRIC (1)
RYZ (WQFN)
10 PINS
84.1
UNIT
RθJA
RθJC(top)
RθJB
ΨJT
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
°C/W
°C/W
°C/W
°C/W
°C/W
77.5
16.6
Junction-to-top characterization parameter
Junction-to-board characterization parameter
4.0
YJB
16.0
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
Copyright © 2022 Texas Instruments Incorporated
4
Submit Document Feedback
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
6.5 Electrical Characteristics (VBIAS = 5 V)
Over operating free-air temperature range (unless otherwise noted). Typical values are at TA = 25°C.
PARAMETER
TEST CONDITIONS
TA
MIN
TYP
MAX UNIT
Power Consumption
25°C
3
uA
ISD,VBIA
5
6
uA
uA
uA
uA
uA
uA
uA
uA
uA
VBIAS Shutdown Current
ON = 0 V
–40°C to 85°C
–40°C to 105°C
25°C
S
15
20
20
IQ,VBIAS VBIAS Quiescent Current
ISD,VIN VIN Shutdown Current
ON > VIH
–40°C to 85°C
–40°C to 105°C
25°C
0.1
1
2
ON = 0 V
–40°C to 85°C
–40°C to 105°C
–40°C to 105°C
ION
ON pin leakage
ON = VBIAS
0.1
4
Performance
25°C
mΩ
mΩ
mΩ
V
RON
On-Resistance
VIN = 0.2 V to 5 V
6
7
–40°C to 85°C
–40°C to 105°C
–40°C to 105°C
–40°C to 105°C
VIH
VIL
Turn on threshold, rising
Turn off threshold, falling
0.765
0.595
0.9
0.7
1.035
0.805
V
VON,
ON pin hysteresis
0.2
V
–40°C to 105°C
–40°C to 105°C
HYST
tON,DEG
On pin deglitch time
2
5
7
us
LITCH
25°C
50
Ω
Ω
RQOD
QOD Resistance
VOUT = VIN
40
60
–40°C to 105°C
Protection
TSD
Thermal Shutdown
-
-
130
150
20
180
°C
°C
TSDHYS Thermal Shutdown Hysteresis
6.6 Electrical Characteristics (VBIAS = 3.3 V)
Over operating free-air temperature range (unless otherwise noted). Typical values are at TA = 25°C.
PARAMETER
TEST CONDITIONS
TA
MIN
TYP
MAX UNIT
Power Consumption
25°C
3
uA
ISD,VBIA
5
5
uA
uA
uA
uA
uA
uA
uA
uA
uA
VBIAS Shutdown Current
ON = 0 V
–40°C to 85°C
–40°C to 105°C
25°C
S
15
0.1
0.1
20
20
IQ,VBIAS VBIAS Quiescent Current
ISD,VIN VIN Shutdown Current
ON > VIH
–40°C to 85°C
–40°C to 105°C
25°C
1
3
1
ON = 0 V
–40°C to 85°C
–40°C to 105°C
–40°C to 105°C
ION
ON pin leakage
ON = VBIAS
Performance
Copyright © 2022 Texas Instruments Incorporated
Submit Document Feedback
5
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
6.6 Electrical Characteristics (VBIAS = 3.3 V) (continued)
Over operating free-air temperature range (unless otherwise noted). Typical values are at TA = 25°C.
PARAMETER
TEST CONDITIONS
TA
MIN
TYP
MAX UNIT
25°C
4
mΩ
RON
On-Resistance
VIN = 0.2 V to 3.3 V
7
7
–40°C to 85°C
–40°C to 105°C
–40°C to 105°C
–40°C to 105°C
mΩ
mΩ
V
VIH
VIL
ON pin turn on threshold, rising
ON pin turn off threshold, falling
0.765
0.595
0.9
0.7
1.035
0.805
V
VON,
ON pin hysteresis
0.2
V
–40°C to 105°C
–40°C to 105°C
HYST
tON,DEG
On pin deglitch time
2
5
6.5
us
LITCH
25°C
50
Ω
Ω
RQOD
QOD Resistance
VOUT = VIN
40
60
–40°C to 105°C
Protection
TSD
Thermal Shutdown
-
-
130
150
20
180
°C
°C
TSDHYS Thermal Shutdown Hysteresis
6.7 Electrical Characteristics (VBIAS = 2.2 V)
Over operating free-air temperature range (unless otherwise noted). Typical values are at TA = 25°C.
PARAMETER
TEST CONDITIONS
TA
MIN
TYP
MAX UNIT
Power Consumption
25°C
3
uA
ISD,VBIA
5
5
uA
uA
uA
uA
uA
uA
uA
uA
uA
VBIAS Shutdown Current
ON = 0 V
–40°C to 85°C
–40°C to 105°C
25°C
S
15
20
20
IQ,VBIAS VBIAS Quiescent Current
ISD,VIN VIN Shutdown Current
ON > VIH
–40°C to 85°C
–40°C to 105°C
25°C
0.1
1
3
1
ON = 0 V
–40°C to 85°C
–40°C to 105°C
–40°C to 105°C
ION
ON pin leakage
ON = VBIAS
0.1
4.3
Performance
25°C
mΩ
mΩ
mΩ
V
RON
On-Resistance
VIN = 0.2 V to 2.2 V
7
7
–40°C to 85°C
–40°C to 105°C
–40°C to 105°C
–40°C to 105°C
VIH
VIL
ON pin turn on threshold, rising
ON pin turn off threshold, falling
0.765
0.595
0.9
0.7
1.035
0.805
V
VON,
ON pin hysteresis
0.2
V
–40°C to 105°C
–40°C to 105°C
HYST
tON,DEG
On pin deglitch time
2
4.5
50
6.5
us
LITCH
25°C
Ω
Ω
RQOD
QOD Resistance
VOUT = VIN
40
60
–40°C to 105°C
Protection
TSD Thermal Shutdown
-
130
150
180
°C
Copyright © 2022 Texas Instruments Incorporated
6
Submit Document Feedback
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
Over operating free-air temperature range (unless otherwise noted). Typical values are at TA = 25°C.
PARAMETER
TEST CONDITIONS
TA
MIN
TYP
MAX UNIT
TSDHYS Thermal Shutdown Hysteresis
-
20
°C
6.8 Switching Characteristics (VBIAS = 2.2 V to 5 V)
Over operating free-air temperature range (unless otherwise noted), CIN=47uF. Typical values are at TA = 25°C, CL = 0.1μF,
and a current load of 1mA.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIN = 5 V
tON
Turn ON time
CT = Open
CT = VBIAS
CT = GND
CT = Open
CT = VBIAS
CT = GND
CT = Open
CT = VBIAS
CT = GND
CT = Open
CT = Open
250
1870
3728
225
1838
3697
26
us
us
us
us
us
us
us
us
us
us
us
tON
Turn ON time
Turn ON time
Rise time
tON
tRISE
tRISE
tRISE
tD
Rise time
Rise time
Delay time
Delay time
Delay time
Fall time
tD
31
tD
31
tFALL
tOFF
11
Turn OFF time
3
VIN = 3.3 V
tON
tON
tON
tRISE
tRISE
tRISE
tD
Turn ON time
CT = Open
CT = VBIAS
CT = GND
CT = Open
CT = VBIAS
CT = GND
CT = Open
CT = VBIAS
CT = GND
CT = Open
CT = Open
175
1261
3586
150
1232
2478
26
us
us
us
us
us
us
us
us
us
us
us
Turn ON time
Turn ON time
Rise time
Rise time
Rise time
Delay time
Delay time
Delay time
Fall time
tD
29
tD
29
tFALL
tOFF
11
Turn OFF time
3
VIN = 1.8 V
tON
tON
tON
tRISE
tRISE
tRISE
tD
Turn ON time
CT = Open
CT = VBIAS
CT = GND
CT = Open
CT = VBIAS
CT = GND
CT = Open
CT = VBIAS
CT = GND
CT = Open
CT = Open
102
664
1302
75
us
us
us
us
us
us
us
us
us
us
us
Turn ON time
Turn ON time
Rise time
Rise time
634
1272
27
Rise time
Delay time
Delay time
Delay time
Fall time
tD
29
tD
30
tFALL
tOFF
11
Turn OFF time
3
VIN = 0.6 V
tON Turn ON time
tON Turn ON time
CT = Open
CT = VBIAS
51
us
us
213
Copyright © 2022 Texas Instruments Incorporated
Submit Document Feedback
7
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
6.8 Switching Characteristics (VBIAS = 2.2 V to 5 V) (continued)
Over operating free-air temperature range (unless otherwise noted), CIN=47uF. Typical values are at TA = 25°C, CL = 0.1μF,
and a current load of 1mA.
PARAMETER
TEST CONDITIONS
MIN
TYP
393
23
MAX
UNIT
us
tON
tRISE
tRISE
tRISE
tD
Turn ON time
CT = GND
CT = Open
CT = VBIAS
CT = GND
CT = Open
CT = VBIAS
CT = GND
CT = Open
CT = Open
Rise time
us
Rise time
183
365
27
us
Rise time
us
Delay time
Delay time
Delay time
Fall time
us
tD
29
us
tD
29
us
tFALL
tOFF
10
us
Turn OFF time
4
us
VIN = 0.285 V
tON
tON
tON
tRISE
tRISE
tRISE
tD
Turn ON time
CT = Open
CT = VBIAS
CT = GND
CT = Open
CT = VBIAS
CT = GND
CT = Open
CT = VBIAS
CT = GND
CT = Open
CT = Open
37
96
158
11
us
us
us
us
us
us
us
us
us
us
us
Turn ON time
Turn ON time
Rise time
Rise time
66
128
27
29
30
9
Rise time
Delay time
Delay time
Delay time
Fall time
tD
tD
tFALL
tOFF
Turn OFF time
4
6.9 Timing Diagram
图6-1. TPS22998 Timing Diagram
Copyright © 2022 Texas Instruments Incorporated
8
Submit Document Feedback
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
6.10 Typical Characteristics
20
19
18
17
16
15
14
13
12
11
10
20
19
18
17
16
15
14
13
12
11
10
–40C
25C
–40C
25C
85C
85C
105C
105C
2
2.5
3
3.5
4
4.5
5
5.5
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Bias Voltage (V)
Input Voltage (V)
VIN = VBIAS
VOUT = Open
VBIAS = 5 V
VOUT = Open
图6-3. Quiescent Current vs Bias Voltage
图6-2. Quiescent Current vs Input Voltage
5
4.5
4
4
3.6
3.2
2.8
2.4
2
3.5
3
2.5
2
1.6
1.2
0.8
0.4
0
1.5
1
–40C
25C
–40C
25C
85C
105C
85C
0.5
0
105C
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
2
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Bias Voltage (V)
VBIAS = 5 V
VOUT = 0 V
VIN = VBIAS
VOUT = 0 V
图6-4. VBIAS Shutdown Current vs Input Voltage
图6-5. VBIAS Shutdown Current vs Bias Voltage
6
60
58
56
54
52
50
48
46
44
42
40
–40C
5.4
4.8
4.2
3.6
3
25C
85C
105C
2.4
1.8
1.2
0.6
0
–40C
25C
85C
105C
2
2.5
3
3.5
4
4.5
5
5.5
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Bias Voltage (V)
Input Voltage (V)
VIN = VBIAS
图6-7. QOD Resistance vs Bias Voltage
VBIAS = 5 V
ILOAD = 200 mA
图6-6. On-Resistance vs Input Voltage
Copyright © 2022 Texas Instruments Incorporated
Submit Document Feedback
9
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
6.10 Typical Characteristics (continued)
250
225
200
175
150
125
100
75
30
29
28
27
26
25
24
23
22
21
20
–40C
25C
–40C
25C
85C
105C
50
85C
25
105C
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Input Voltage (V)
Input Voltage (V)
VBIAS = 5 V
CL = 0.1 µF
CT = Floating
VBIAS = 5 V
CL = 0.1 µF
CT = Floating
图6-8. Rise Time vs Input Voltage
图6-9. Delay Time vs Input Voltage
275
250
225
200
175
150
125
100
75
14
13
12
11
10
9
8
7
6
5
4
3
2
1
–40C
25C
–40C
25C
85C
50
85C
105C
105C
25
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Input Volage (V)
Input Voltage (V)
VBIAS = 5 V
CL = 0.1 µF
CT = Floating
VBIAS = 5 V
CL = 0.1 µF
CT = Floating
图6-10. Turn-On Time vs Input Voltage
图6-11. Fall Time vs Input Voltage
6
5.4
4.8
4.2
3.6
3
–40C
25C
85C
105C
2.4
1.8
1.2
0.6
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Input Voltage (V)
VBIAS = 5 V
CL = 0.1 µF
图6-12. Off Time vs Input Voltage
CT = Floating
Copyright © 2022 Texas Instruments Incorporated
10
Submit Document Feedback
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
7 Detailed Description
7.1 Overview
The TPS22998 device is a single-channel load switch with a 4-mΩ power MOSFET designed to operate up to 10
A. The voltage range is 0.2 V to 5.5 V. A configurable rise time provides flexibility for power sequencing and
minimizes inrush current for high capacitance loads.
An enable pin (ON) controls the switch, which is capable of interfacing directly with low voltage GPIO signals.
The TPS22998 device uses quick output discharge when switch turns off, pulling the output down to 0 V through
an internal 50-Ω resistor.
7.2 Functional Block Diagram
7.3 Feature Description
7.3.1 ON and OFF Control
The ON pin controls the state of the switch. The ON pin is compatible with standard GPIO logic threshold so it
can be used in a wide variety of applications. When the pin pull high, the device enables, and when it is low, the
device disables.
7.3.2 Adjustable Slew Rate
The CT pin is a tri-state pin, meaning that it has three different slew rates depending on the connection to the
pin. The CT pin can be grounded, pulled high, or left floating. Floating defines as an effective resistance to GND
or other pins greater than 10 MΩ.
Copyright © 2022 Texas Instruments Incorporated
Submit Document Feedback
11
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
7.3.3 Thermal Shutdown
When the device temperature reaches 150°C (typical), the device shuts itself off to prevent thermal damage.
After it cools off by about 20°C, the device turns back on. If the device is kept in a thermally stressful
environment, then the device oscillates between these two states until it can keep its temperature below the
thermal shutdown point.
7.4 Device Functional Modes
The below table summarizes the device functional modes:
ON
L
Fault Condition
VOUT State
None
None
QOD to GND
H
Connected to VIN
QOD to GND
H
Thermal shutdown
Copyright © 2022 Texas Instruments Incorporated
12
Submit Document Feedback
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
8 Application and Implementation
备注
Information in the following applications sections is not part of the TI component specification, and TI
does not warrant its accuracy or completeness. TI’s customers are responsible for determining
suitability of components for their purposes, as well as validating and testing their design
implementation to confirm system functionality.
8.1 Application Information
This section highlights some of the design considerations when implementing this device in various applications.
8.2 Typical Application
This typical application demonstrates how to use the TPS22998 device to limit startup inrush current.
图8-1. TPS22998 Basic Application
8.2.1 Design Requirements
For this example, the values below are used as the design parameters.
表8-1. Design Parameters
PARAMETER
VBIAS
VALUE
3.3 V
VIN
1.8 V
Load capacitance
470 μF
Maximum inrush current
1 A
Copyright © 2022 Texas Instruments Incorporated
Submit Document Feedback
13
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
8.2.2 Detailed Design Procedure
When the switch enables, the charge up the output capacitance from 0 V to the set value (1.8 V in this example).
This charge arrives in the form of inrush current. Calculate inrush current using 方程式1.
Inrush Current = CL × dVOUT/dt
(1)
Where:
• CL is the output capacitance.
• dVOUT is the change in VOUT during the ramp up of the output voltage when device is enabled. Because
rise time is 10% of VOUT to 90% of VOUT, this is 80% of the VIN value.
• dt is the rise time in VOUT during the ramp up of the output voltage when the device is enabled.
The TPS22998 offers an adjustable rise time for VOUT, allowing the user to control the inrush current during turn
on. Calculate the appropriate rise time using the design requirements and the inrush current equation as shown
below.
1A = 470 µF × (1.8 V × 80%) / dt
dt = 677µs
(2)
(3)
To ensure an inrush current of less than 1 A, a CT setting that yields a rise time of more than 677 µs must be
chosen. By pulling the CT pin high, a rise time of 900 μs is selected, limiting the inrush current to below 1 A.
8.2.3 Application Performance Plots
The below scope shot shows the TPS22998 turning on into a 470-μF load with the CT pin tied to VBIAS.
图8-2. TPS22998 Turn-On into 470 μF (CT = VBIAS
)
Copyright © 2022 Texas Instruments Incorporated
14
Submit Document Feedback
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
9 Power Supply Recommendations
The TPS22998 device is designed to operate with a VIN range of 0.2 V to 5.5 V. Regulate the VIN power supply
well and place as close to the device terminal as possible. The power supply must be able to withstand all
transient load current steps. In most situations, using an input capacitance (CIN) of 1 μF is sufficient to prevent
the supply voltage from dipping when the switch is turned on. In cases where the power supply is slow to
respond to a large transient current or large load current step, additional bulk capacitance can be required on the
input.
10 Layout
10.1 Layout Guidelines
For best performance, all traces must be as short as possible. To be most effective, place the input and output
capacitors close to the device to minimize the effects that parasitic trace inductances can have on normal
operation. Using wide traces for VIN, VOUT, and GND helps minimize the parasitic electrical effects.
10.2 Layout Example
图10-1. TPS22998 Layout Example
Copyright © 2022 Texas Instruments Incorporated
Submit Document Feedback
15
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
11 Device and Documentation Support
TI offers an extensive line of development tools. Tools and software to evaluate the performance of the device,
generate code, and develop solutions are listed below.
11.1 接收文档更新通知
要接收文档更新通知,请导航至 ti.com 上的器件产品文件夹。点击订阅更新 进行注册,即可每周接收产品信息更
改摘要。有关更改的详细信息,请查看任何已修订文档中包含的修订历史记录。
11.2 支持资源
TI E2E™ 支持论坛是工程师的重要参考资料,可直接从专家获得快速、经过验证的解答和设计帮助。搜索现有解
答或提出自己的问题可获得所需的快速设计帮助。
链接的内容由各个贡献者“按原样”提供。这些内容并不构成 TI 技术规范,并且不一定反映 TI 的观点;请参阅
TI 的《使用条款》。
11.3 Trademarks
TI E2E™ is a trademark of Texas Instruments.
所有商标均为其各自所有者的财产。
11.4 Electrostatic Discharge Caution
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled
with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric changes could cause the device not to meet its published
specifications.
11.5 术语表
TI 术语表
本术语表列出并解释了术语、首字母缩略词和定义。
Copyright © 2022 Texas Instruments Incorporated
16
Submit Document Feedback
Product Folder Links: TPS22998
TPS22998
www.ti.com.cn
ZHCSMV6A –OCTOBER 2021 –REVISED DECEMBER 2021
12 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
Copyright © 2022 Texas Instruments Incorporated
Submit Document Feedback
17
Product Folder Links: TPS22998
PACKAGE OPTION ADDENDUM
www.ti.com
24-Feb-2022
PACKAGING INFORMATION
Orderable Device
Status Package Type Package Pins Package
Eco Plan
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
Samples
Drawing
Qty
(1)
(2)
(3)
(4/5)
(6)
TPS22998RYZR
ACTIVE
WQFN-HR
RYZ
10
3000 RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 105
1LF
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6)
Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two
lines if the finish value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 1
PACKAGE OUTLINE
RYZ0010A
WQFN-HR - 0.8 mm max height
SCALE 7.000
PLASTIC QUAD FLATPACK - NO LEAD
1.6
1.4
B
A
2.1
1.9
PIN 1 INDEX AREA
0.8
0.7
C
SEATING PLANE
0.08 C
0.05
0.00
(0.12)
TYP
0.475
0.275
6X
5
0.1
C A B
C
0.05
4
6
SYMM
2X
1.5
0.3
0.2
10X
9
1
6X 0.5
10
0.725
0.525
4X
PIN 1 ID
(45 X 0.1)
SYMM
0.1
C A B
C
0.05
4226834/B 06/2021
NOTES:
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing
per ASME Y14.5M.
2. This drawing is subject to change without notice.
www.ti.com
EXAMPLE BOARD LAYOUT
RYZ0010A
WQFN-HR - 0.8 mm max height
PLASTIC QUAD FLATPACK - NO LEAD
SYMM
10
4X (0.825)
6X (0.575)
9
1
10X (0.25)
SYMM
(1.825)
6X (0.5)
4
6
(R0.05) TYP
5
(1.075)
(1.325)
LAND PATTERN EXAMPLE
EXPOSED METAL SHOWN
SCALE:30X
0.05 MAX
ALL AROUND
0.05 MIN
ALL AROUND
SOLDER MASK
OPENING
METAL
EXPOSED
METAL
SOLDER MASK
EXPOSED
OPENING
METAL
METAL
UNDER
SOLDER MASK
NON SOLDER MASK
DEFINED
SOLDER MASK
DEFINED
(PREFERRED)
SOLDER MASK DETAILS
NOT TO SCALE
4226834/B 06/2021
NOTES: (continued)
3. For more information, see Texas Instruments literature number SLUA271 (www.ti.com/lit/slua271).
www.ti.com
EXAMPLE STENCIL DESIGN
RYZ0010A
WQFN-HR - 0.8 mm max height
PLASTIC QUAD FLATPACK - NO LEAD
SYMM
10
4X (0.825)
6X (0.575)
1
9
10X (0.25)
SYMM
(1.825)
6X (0.5)
4
6
(R0.05) TYP
5
(1.075)
(1.325)
SOLDER PASTE EXAMPLE
BASED ON 0.1 mm THICKNESS
SCALE: 30X
4226834/B 06/2021
NOTES: (continued)
5. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate
design recommendations.
www.ti.com
重要声明和免责声明
TI“按原样”提供技术和可靠性数据(包括数据表)、设计资源(包括参考设计)、应用或其他设计建议、网络工具、安全信息和其他资源,
不保证没有瑕疵且不做出任何明示或暗示的担保,包括但不限于对适销性、某特定用途方面的适用性或不侵犯任何第三方知识产权的暗示担
保。
这些资源可供使用 TI 产品进行设计的熟练开发人员使用。您将自行承担以下全部责任:(1) 针对您的应用选择合适的 TI 产品,(2) 设计、验
证并测试您的应用,(3) 确保您的应用满足相应标准以及任何其他功能安全、信息安全、监管或其他要求。
这些资源如有变更,恕不另行通知。TI 授权您仅可将这些资源用于研发本资源所述的 TI 产品的应用。严禁对这些资源进行其他复制或展示。
您无权使用任何其他 TI 知识产权或任何第三方知识产权。您应全额赔偿因在这些资源的使用中对 TI 及其代表造成的任何索赔、损害、成
本、损失和债务,TI 对此概不负责。
TI 提供的产品受 TI 的销售条款或 ti.com 上其他适用条款/TI 产品随附的其他适用条款的约束。TI 提供这些资源并不会扩展或以其他方式更改
TI 针对 TI 产品发布的适用的担保或担保免责声明。
TI 反对并拒绝您可能提出的任何其他或不同的条款。IMPORTANT NOTICE
邮寄地址:Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2022,德州仪器 (TI) 公司
相关型号:
TPS2300IPW
DUAL HOT-SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER AND POWER-GOOD REPORTING
TI
TPS2300IPWG4
DUAL HOT-SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER AND POWER-GOOD REPORTING
TI
TPS2300IPWR
DUAL HOT-SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER AND POWER-GOOD REPORTING
TI
TPS2300IPWRG4
DUAL HOT-SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER AND POWER-GOOD REPORTING
TI
TPS2300PW
DUAL HOT SWAP POWER CONTROLLER WITH INDEPENDENT CIRCUIT BREAKER AND POWER-GOOD REPORTING
TI
TPS2301IPW
DUAL HOT-SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER AND POWER-GOOD REPORTING
TI
TPS2301IPWG4
DUAL HOT-SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER AND POWER-GOOD REPORTING
TI
TPS2301IPWR
DUAL HOT-SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER AND POWER-GOOD REPORTING
TI
TPS2301IPWRG4
DUAL HOT-SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER AND POWER-GOOD REPORTING
TI
©2020 ICPDF网 联系我们和版权申明