ZHCSD50D December   2014  – February 2017 TPS62170-Q1 , TPS62171-Q1 , TPS62172-Q1

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Enable / Shutdown (EN)
      2. 8.3.2 Softstart
      3. 8.3.3 Power Good (PG)
      4. 8.3.4 Under Voltage Lockout (UVLO)
      5. 8.3.5 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Pulse Width Modulation (PWM) Operation
      2. 8.4.2 Power Save Mode Operation
      3. 8.4.3 100% Duty-Cycle Operation
      4. 8.4.4 Current Limit and Short Circuit Protection
      5. 8.4.5 Operation Above TJ = 125°C
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical TPS62170-Q1 Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Custom Design With WEBENCH® Tools
        2. 9.2.2.2 Programming the Output Voltage
        3. 9.2.2.3 External Component Selection
          1. 9.2.2.3.1 Inductor Selection
          2. 9.2.2.3.2 Capacitor Selection
            1. 9.2.2.3.2.1 Output Capacitor
            2. 9.2.2.3.2.2 Input Capacitor
        4. 9.2.2.4 Output Filter and Loop Stability
      3. 9.2.3 Application Performance Plots
    3. 9.3 System Examples
      1. 9.3.1 Inverting Power Supply
      2. 9.3.2 Various Output Voltages
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Thermal Considerations
  12. 12器件和文档支持
    1. 12.1 器件支持
      1. 12.1.1 开发支持
        1. 12.1.1.1 使用 WEBENCH® 工具定制设计方案
      2. 12.1.2 Third-Party Products Disclaimer
    2. 12.2 文档支持
      1. 12.2.1 相关文档　
    3. 12.3 相关链接
    4. 12.4 商标
    5. 12.5 静电放电警告
    6. 12.6 接收文档更新通知
    7. 12.7 社区资源
    8. 12.8 Glossary
  13. 13机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

7 Specifications

7.1 Absolute Maximum Ratings

over operating junction temperature range (unless otherwise noted) (1)
MIN MAX UNIT
Pin voltage(2) VIN –0.3 20 V
EN –0.3 VIN+0.3
SW -0.3 VIN+0.3 V
FB, PG, VOS –0.3 7 V
Power Good sink current PG 10 mA
Operating junction temperature range, TJ –40 150 °C
Storage temperature range, Tstg –65 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltages are with respect to network ground terminal.

7.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human body model (HBM), per AEC Q100-002(1) ±2000 V
Charged device model (CDM), per AEC Q100-011 ±500
(1) AEC Q100-002 indicates HBM stressing is done in accordance with the ANSI/ESDA/JEDEC JS-001 specification.

7.3 Recommended Operating Conditions

over operating junction temperature range (unless otherwise noted)
MIN TYP MAX UNIT
VIN Supply voltage 3 17 V
VOUT Output voltage range 0.9 6 V
TJ Operating junction temperature –40 125 °C

7.4 Thermal Information

THERMAL METRIC(1) TPS6217x-Q1 UNIT
DSG (8 PINS)
RθJA Junction-to-ambient thermal resistance 65.5 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 66.4 °C/W
RθJB Junction-to-board thermal resistance 35.5 °C/W
ψJT Junction-to-top characterization parameter 1.7 °C/W
ψJB Junction-to-board characterization parameter 35.8 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance 8.4 °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, .

7.5 Electrical Characteristics

over junction temperature range (TJ = –40°C to +125°C), typical values at VIN = 12 V and TJ = 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY
VIN Input voltage range(1) 3 17 V
IQ Operating quiescent current EN = High, IOUT = 0 mA, Device not switching 17 30 µA
ISD Shutdown current(2) EN = Low 1.8 25 µA
VUVLO Undervoltage lockout threshold Falling input voltage 2.6 2.7 2.82 V
Hysteresis 180 mV
TSD Thermal shutdown temperature 160 °C
Thermal shutdown hysteresis 20
CONTROL (EN, PG)
VEN_H High-level input threshold voltage (EN) 0.9 V
VEN_L Low-level input threshold voltage (EN) 0.3 V
ILKG_EN Input leakage current (EN) EN = VIN or GND 0.01 1 µA
VTH_PG Power Good threshold voltage Rising (%VOUT) 92% 95% 98%
Falling (%VOUT) 87% 90% 93%
VOL_PG Power Good output low IPG = –2 mA 0.07 0.3 V
ILKG_PG Input leakage current (PG) VPG = 1.8 V 1 400 nA
POWER SWITCH
RDS(ON) High-side MOSFET ON-resistance VIN ≥ 6 V 300 600 mΩ
VIN = 3 V 430
Low-side MOSFET ON-resistance VIN ≥ 6 V 120 200 mΩ
VIN = 3 V 165
ILIMF High-side MOSFET forward current limit(3) VIN = 12 V, TA = 25°C 0.85 1.05 1.35 A
OUTPUT
VREF Internal reference voltage 0.8 V
ILKG_FB Pin leakage current (FB) TPS62170-Q1, VFB = 1.2 V 5 400 nA
VOUT Output voltage range TPS62170-Q1, VIN ≥ VOUT 0.9 6.0 V
Feedback voltage accuracy(4) PWM Mode operation, VIN ≥ VOUT + 1 V –3% 3%
Power Save Mode operation, COUT = 22 µF(5) –3.5% 4%
DC output voltage load regulation(6) VIN = 12 V, VOUT = 3.3 V, PWM Mode operation 0.05 % / A
DC output voltage line regulation (6) 3 V ≤ VIN ≤ 17 V, VOUT = 3.3 V, IOUT = 0.5 A,
PWM Mode operation 		0.02 % / V
(1) The device is still functional down to Under Voltage Lockout (see parameter VUVLO).
(2) Current into VIN pin.
(3) This is the static current limit. It can be temporarily higher in applications due to internal propagation delay (see Current Limit and Short Circuit Protection).
(4) For fixed voltage versions, the (internal) resistive feedback divider is included.
(5) The accuracy in Power Save Mode can be improved by increasing the COUT value, reducing the output voltage ripple.
(6) Line and load regulation are depending on external component selection and layout (see Figure 14 and Figure 15).

7.6 Typical Characteristics

At VIN = 12 V, VOUT = 3.3 V and TJ = 25°C (unless otherwise noted)
TPS62170-Q1 TPS62171-Q1 TPS62172-Q1 SLVSCK6_IQ.gif
Figure 1. Quiescent Current
TPS62170-Q1 TPS62171-Q1 TPS62172-Q1 SLVSCK6_RDSonHS.gif
Figure 3. High-Side Static Drain-Source-Resistance (RDSon)
TPS62170-Q1 TPS62171-Q1 TPS62172-Q1 SLVSCK6_ISD.gif
Figure 2. Shutdown Current
TPS62170-Q1 TPS62171-Q1 TPS62172-Q1 SLVSCK6_RDSonLS.gif
Figure 4. Low-Side Static Drain-Source-Resistance (RDSon)