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参数资料
| 型号： | ADE7166ASTZF16 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 32/152页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METER 1PHASE 64LQFP |
| 标准包装： | 1 |
| 输入阻抗： | * |
| 测量误差： | * |
| 电压 - 高输入/输出： | * |
| 电压 - 低输入/输出： | * |
| 电流 - 电源： | * |
| 电源电压： | * |
| 测量仪表类型： | * |
| 工作温度： | * |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-LQFP |
| 供应商设备封装： | 64-LQFP（10x10） |
| 包装： | 托盘 |
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ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/ADE7569
POWER SUPPLY ARCHITECTURE
Each ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/
ADE7569 has two power supply inputs, V DD and V BAT , which
require only a single 3.3 V power supply at V DD for full operation.
A battery backup, or secondary power supply, with a maximum
of 3.7 V can be connected to the V BAT input. Internally, the
ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/ADE7569
connect V DD or V BAT to V SWOUT , which is used to derive power for
the device circuitry. The V SWOUT output pin reflects the voltage at
the internal power supply (V SWOUT ) and has a maximum output
current of 6 mA. This pin can also be used to power a limited
number of peripheral components. The 2.5 V analog supply (V INTA )
and the 2.5 V supply for the core logic (V INTD ) are derived by on-
chip linear regulators from V SWOUT . Figure 32 shows the power
supply architecture of the ADE7116/ADE7156/ADE7166/
ADE7169/ADE7566/ADE7569.
The battery switchover functionality provided by the ADE7116/
ADE7156/ADE7166/ADE7169/ADE7566/ADE7569 allows a
seamless transition from V DD to V BAT . An automatic battery
switchover option ensures a stable power supply to the device, as
long as the external battery voltage is above 2.75 V. It allows
continuous code execution even while the internal power
supply is switching from V DD to V BAT and back. Note that the
energy metering ADCs are not available when V BAT is being
used for V SWOUT .
Power supply monitor (PSM) interrupts can be enabled to
indicate when battery switchover occurs and when the V DD
power supply is restored (see the Power Supply Management
(PSM) Interrupt section.)
V DD to V BAT
The following three events switch the internal power supply
(V SWOUT ) from V DD to V BAT :
The ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/
ADE7569 provide automatic battery switchover between V DD
and V BAT based on the voltage level detected at V DD or V DCIN . In
addition, the BCTRL input can be used to trigger a battery
switchover. The conditions for switching V SWOUT from V DD to
V BAT and back to V DD are described in the Battery Switchover
section. V DCIN is an input pin that can be connected to a 0 V to
3.3 V dc signal. This input is intended for power supply super-
visory purposes and does not provide power to the ADE7116/
ADE7156/ADE7166/ADE7169/ADE7566/ADE7569 circuitry.
V DCIN V DD V BAT V SWOUT
?
?
?
V DCIN < 1.2 V. When V DCIN falls below 1.2 V, V SWOUT
switches from V DD to V BAT . This event is enabled when the
BATPRG[1:0] bits in the battery switchover configuration
SFR (BATPR, Address 0xF5) = 0b01. Setting these bits
disables switchover based on V DCIN . Battery switchover on
low V DCIN is disabled by default.
V DD < 2.75 V. When V DD falls below 2.75 V, V SWOUT
switches from V DD to V BAT . This event is enabled when the
BATPRG[1:0] bits in the BATPR SFR are cleared.
Falling edge on BCTRL. When the battery control pin,
BCTRL, goes low, V SWOUT switches from V DD to V BAT . This
BCTRL
POWER SUPPLY
MANAGEMENT
ADC
V SW
*
LDO
LDO
V INTD
V INTA
MCU
ADE
external switchover signal can trigger a switchover to V BAT
at any time. Setting the INT1PRG bits to X01 in the
interrupt pins configuration SFR (INTPR, Address 0xFF)
enables the battery control pin (see Table 17).
ADC
*
SPI/I 2 C
Switching from V BAT to V DD
To switch V SWOUT from V BAT to V DD , all of the following events
SCRATCH PAD LCD
TEMPERATURE ADC
*
RTC
3.3V
UART
2.5V
must be true:
? V DD > 2.75 V. V SWOUT switches back to V DD after V DD remains
above 2.75 V.
*NOT AVAILABLE IN THE ADE7116.
Figure 32. Power Supply Architecture
BATTERY SWITCHOVER
The ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/
ADE7569 monitor V DD , V BAT , and V DCIN . Automatic battery switch-
over from V DD to V BAT can be configured based on the status of
?
?
V DCIN > 1.2 V and V DD > 2.75 V. If the low V DCIN condition
is enabled, V SWOUT switches to V DD after V DCIN remains
above 1.2 V and V DD remains above 2.75 V.
Rising edge on BCTRL. If the battery control pin is enabled,
V SWOUT switches back to V DD after BCTRL is high, and the
first or second bullet point is satisfied.
the V DD , V DCIN , or BCTRL pin. Battery switchover is enabled by
default. Setting Bit 1 in the Battery Switchover Configuration SFR
(BATPR, Address 0xF5) disables battery switchover so that V DD
is always connected to V SWOUT (see Table 19). The source of
V SWOUT is indicated by Bit 6 in the Peripheral Configuration SFR
(PERIPH, Address 0xF4), which is described in Table 20. Bit 6 is
set when V SWOUT is connected to V DD and cleared when V SWOUT is
connected to V BAT .
Rev. B | Page 32 of 15 2
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