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参数资料
| 型号： | ADP1043A-USB-Z |
| 厂商： | Analog Devices Inc |
| 文件页数： | 9/72页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD DIG POWER SUPPLY |
| 标准包装： | 1 |
| 附件类型： | 连接 USB 至 I2C 的接收器 |
| 适用于相关产品： | ADP1043A |
| 相关产品： | ADP1043AACPZ-RLDKR-ND - IC SECONDARY SIDE CTRLR 32LFCSP ADP1043AACPZ-RLCT-ND - IC SECONDARY SIDE CTRLR 32LFCSP ADP1043AACPZ-RLTR-ND - IC SECONDARY SIDE CTRLR 32LFCSP |
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ADP1043A
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
VS2
1
24
SHAREi
AGND
VS1
CS2–
CS2+
ACSNS
CS1
PGND
2
3
4
5
6
7
8
PIN 1
INDICATOR
TOP VIEW
(Not to Scale)
23
22
21
20
19
18
17
SHAREo
PGOOD1
PGOOD2
FLAGIN
PSON
SDA
SCL
NOTES
1. THE ADP1043A HAS AN EXPOSED THERMAL PAD ON THE UNDERSIDE
OF THE PACKAGE. FOR INCREASED RELIABILITY OF THE SOLDER
JOINTS AND MAXIMUM THERMAL CAPABILITY, IT IS RECOMMENDED
THAT THE PAD BE SOLDERED TO THE PCB GROUND PLANE.
Figure 3. Pin Configuration
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
Mnemonic
VS2
AGND
VS1
CS2?
CS2+
ACSNS
CS1
PGND
SR1
SR2
OUTA
OUTB
OUTC
OUTD
OUTAUX
GATE
SCL
SDA
Description
Power Supply Output Sense Input. This signal is referred to PGND. Input to a low frequency Σ-Δ ADC. Nominal
voltage at this pin should be 1 V. The resistor divider on this input must have a tolerance specification of 0.5%
or better to allow for trimming.
Analog Ground. This pin is the ground for the analog circuitry of the ADP1043A. Star connect to DGND.
Local Voltage Sense Input. This signal is referred to PGND. Input to a high frequency Σ-Δ ADC. Nominal voltage
at this pin should be 1 V. The resistor divider on this input must have a tolerance specification of 0.5% or
better to allow for trimming.
Inverting Differential Current Sense Input. Nominal voltage at this pin should be 1 V for best operation. When
using high-side current sensing in a 12 V application, place a 110 kΩ resistor between the sense resistor and
this pin. When using low-side current sensing, place a 10 kΩ resistor between the sense resistor and this pin.
When using high-side current sensing, use the formula R = (V COMMONMODE ? 1)/100 μA. A 0.1% resistor must be
used to connect this circuit.
Noninverting Differential Current Sense Input. Nominal voltage at this pin should be 1 V for best operation.
When using high-side current sensing in a 12 V application, place a 110 kΩ resistor between the sense resistor
and this pin. When using low-side current sensing, place a 10 kΩ resistor between the sense resistor and this
pin. When using high-side current sensing, use the formula R = (V COMMONMODE ? 1)/100 μA. A 0.1% resistor must
be used to connect this circuit.
AC Sense Input. This input is connected upstream of the main inductor through a resistor divider network.
The nominal voltage for this circuit is 0.45 V. This signal is referred to PGND.
Primary Side Current Sense Input. This pin is the current transformer input to measure and control the primary
side current. This signal is referred to PGND. The resistors on this input must have a tolerance specification of
0.5% or better to allow for trimming.
Power Ground. This pin is the ground connection for the main power rail of the power supply. Star connect
to AGND.
Synchronous Rectifier Output. This PWM output connects to the input of a FET driver. This pin can be disabled
when not in use. This signal is referred to AGND.
Synchronous Rectifier Output. This PWM output connects to the input of a FET driver. This pin can be disabled
when not in use. This signal is referred to AGND.
PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND.
PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND.
PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND.
PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND.
Auxiliary PWM Output. This pin can be disabled when not in use. This signal is referred to AGND.
OrFET Gate Drive Output (Open Drain). This signal is referred to AGND.
I 2 C Serial Clock Input. This signal is referred to AGND.
I 2 C Serial Data Input and Output (Open Drain). This signal is referred to AGND.
Rev. 0 | Page 9 of 72
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