ADP1048 Analog Devices, ADP1048 Datasheet - Page 10

• Manufacturer Part Number: ADP1048
• Description: Digital Power Factor Correction Controller with accurate AC Power Metering
• Manufacturer: Analog Devices

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