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参数资料
| 型号： | TPS65023QRSBRQ1 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PQCC40 |
| 封装： | 5 X 5 MM, GREEN, PLASTIC, WQFN-40 |
| 文件页数： | 15/54页 |
| 文件大小： | 1546K |
| 代理商： | TPS65023QRSBRQ1 |
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RESPWRON
VRTC
LDO
VCC
VRTC
Vref
priority
#3
priority
#2
priority
#1
EN
V_VSYSIN
V_VBACKUP
VBACKUP
V_VBACKUP
VSYSIN
V_VSYSIN
SLVS927C – MARCH 2009 – REVISED MAY 2010
www.ti.com
A.
V_VSYSIN, V_VBACKUP thresholds: falling = 2.55 V, rising = 2.65 V ±3%
B.
RESPWRON thresholds: falling = 2.4 V, rising = 2.52 V ±3%
Figure 26.
Step-Down Converters, VDCDC1, VDCDC2, and VDCDC3
The TPS65023 incorporates three synchronous step-down converters operating typically at 2.25 MHz fixed
frequency pulse width modulation (PWM) at moderate to heavy load currents. At light load currents, the
converters automatically enter the power save mode (PSM), and operate with pulse frequency modulation (PFM).
The VDCDC1 converter is capable of delivering 1.5 A output current, the VDCDC2 converter is capable of
delivering 1.2 A and the VDCDC3 converter is capable of delivering up to 1 A.
The converter output voltages can be programmed via the DEFDCDC1, DEFDCDC2 and DEFDCDC3 pins. The
pins can either be connected to GND, VCC, or to a resistor divider between the output voltage and GND. The
VDCDC1 converter defaults to 1.2 V or 1.6 V depending on the DEFDCDC1 configuration pin. If DEFDCDC1 is
tied to ground, the default is 1.2 V. If it is tied to VCC, the default is 1.6 V. When the DEFDCDC1 pin is
connected to a resistor divider, the output voltage can be set in the range of 0.6 V to VINDCDC1 V. See the
application information section for more details. The core voltage can be reprogrammed via the serial interface in
the range of 0.8 V to 1.6 V with a programmable slew rate. The converter is forced into PWM operation whilst
any programmed voltage change is underway, whether the voltage is being increased or decreased. The
DEFCORE and DEFSLEW registers are used to program the output voltage and slew rate during voltage
transitions.
The VDCDC2 converter defaults to 1.8 V or 3.3 V depending on the DEFDCDC2 configuration pin. If DEFDCDC2
is tied to ground, the default is 1.8 V. If it is tied to VCC, the default is 3.3 V. When the DEFDCDC2 pin is
connected to a resistor divider, the output voltage can be set in the range of 0.6 V to VINDCDC2 V.
The VDCDC3 converter defaults to 1.8 V or 3.3 V depending on the DEFDCDC3 configuration pin. If DEFDCDC3
is tied to ground the default is 1.8 V. If it is tied to VCC, the default is 3.3 V. When the DEFDCDC3 pin is
connected to a resistor divider, the output voltage can be set in the range of 0.6 V to VINDCDC3 V.
The step-down converter outputs (when enabled) are monitored by power good (PG) comparators, the outputs of
which are available via the serial interface. The outputs of the dc-dc converters can be optionally discharged via
on-chip 300-
resistors when the dc-dc converters are disabled.
22
Copyright 2009–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS65023-Q1
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相关代理商/技术参数 |
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| TPS65023RSBG4 | 制造商:Texas Instruments 功能描述: |
| TPS65023RSBR | 功能描述:电池管理 6Ch Pwr Mgmt IC RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| TPS65023RSBRG4 | 功能描述:电池管理 6Ch Pwr Mgmt IC RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| TPS65023RSBT | 功能描述:电池管理 6-Channel Power Management IC RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| TPS65023RSBT | 制造商:Texas Instruments 功能描述:Power Management IC |
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