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ADP1047DC1-EVALZ View Datasheet(PDF) - Analog Devices

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ADP1047DC1-EVALZ Datasheet PDF : 84 Pages
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ADP1047/ADP1048
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
Data Sheet
AGND 1
24 VDD
VAC 2
23 RES
VFB 3
22 RTD
OVP 4
PGND 5
ILIM 6
NC 7
ADP1047
TOP VIEW
(Not to Scale)
21 ADD
20 SDA
19 SCL
18 SYNC
CS– 8
17 INRUSH
CS+ 9
16 PGOOD
DGND 10
15 AC_OK
PSON 11
14 PWM2
VCORE 12
13 PWM
NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.
Figure 3. ADP1047 Pin Configuration
AGND 1
24 VDD
VAC 2
23 RES
VFB 3
22 RTD
OVP 4
PGND 5
ILIM 6
IBAL 7
ADP1048
TOP VIEW
(Not to Scale)
21 ADD
20 SDA
19 SCL
18 SYNC
CS– 8
17 INRUSH
CS+ 9
16 PGOOD
DGND 10
15 AC_OK
PSON 11
14 PWM2
VCORE 12
13 PWM
Figure 4. ADP1048 Pin Configuration
Table 4. Pin Function Descriptions
Pin No. Mnemonic Description
1
AGND
Analog Ground. AGND should be connected directly to DGND.
2
VAC
Input Line Voltage Sense. The VAC signal is referred to PGND.
3
VFB
Feedback Voltage Sense. The VFB signal is referred to PGND. VFB is the feedback signal for PFC power circuit
regulation. It is used as the analog voltage input to the VFB ADC.
4
OVP
Overvoltage Protection. The OVP signal is referred to PGND. This signal is used for redundant overvoltage protection.
5
PGND
Power Ground. PGND is the connection for the ground line of the power rail. There should be a low impedance
path between PGND and AGND.
6
ILIM
Fast Current Limiting. This pin is referred to PGND.
7
NC/IBAL ADP1047: No Connect. Do not connect to this pin.
ADP1048: Current Balancing Input for Interleaved Operation. The IBAL input is referred to PGND.
8
CS−
Differential Current Sense Negative Input. The CS− signal is used for current measurement, monitoring, and
protection. A 0.1%, 10 kΩ resistor must be used to connect to this circuit.
9
CS+
Differential Current Sense Positive Input. The CS+ signal is used for current measurement, monitoring, and
protection. A 0.1%, 10 kΩ resistor must be used to connect to this circuit.
10
DGND
Digital Ground. DGND should be connected directly to AGND.
11
PSON
Power Supply Enable Signal. The PSON signal is used to enable/disable the PFC controller. The PSON signal is
referred to DGND.
12
VCORE
Output of 2.5 V Regulator. Connect a 100 nF capacitor from VCORE to DGND.
13
PWM
PWM Output for PFC Regulation. The PWM signal is referred to AGND.
14
PWM2
Auxiliary PWM Output (ADP1047) or Interleaved PWM Output (ADP1048). The PWM2 signal is referred to AGND.
15
AC_OK
Open-Drain Output. User-configurable signal from a combination of flags. The AC_OK signal is referred to AGND.
16
PGOOD
Open-Drain Output. User-configurable signal from a combination of flags. The PGOOD signal is referred to AGND.
17
INRUSH
Inrush Current Control Signal to an External Inrush Driver. This open-drain output is referred to AGND.
18
SYNC
Allows parallel PFC controllers to synchronize to reduce interference. This pin is referred to DGND.
19
SCL
I2C Serial Clock Input. The SCL signal is referred to DGND.
20
SDA
I2C Serial Data Input and Output (Open-Drain). The SDA signal is referred to DGND.
21
ADD
Address Select Input. Connect a resistor from ADD to AGND (see the PMBus Address section).
22
RTD
Thermistor Input. A thermistor is placed from RTD to AGND. The RTD signal is referred to AGND.
23
RES
Internal Voltage Reference. Connect a 0.1%, 50 kΩ resistor from RES to AGND.
24
VDD
Positive Supply Input. The range is from 3.0 V to 3.6 V. The VDD signal is referred to AGND.
Rev. 0 | Page 10 of 84
 

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