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參數(shù)資料
| 型號(hào)： | APC12MK03-9MAJ |
| 英文描述： | Non-Isolated DC/DC Power Module Tiny SMT Footprint - 1.8V-12V Input, 0.9V to 3.6V Output |
| 中文描述： | 非隔離DC / DC電源模塊微型貼片足跡- 1.8 - 12V輸入，0.9V至3.6V的輸出 |
| 文件頁(yè)數(shù)： | 11/23頁(yè) |
| 文件大?。?/td> | 684K |
| 代理商： | APC12MK03-9MAJ |
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Technical Reference Notes
APC12 Centauri II
Trim Function
(continued)
Method 2: External DC Source
By connecting an external DC supply across P4 (Enable) and P3 (GND) through a limiting resistor Rt, (see Figure 5), output
voltage adjustment can also be achieved. Equation 3 provides the relationship between the External DC supply, Vt, and Vo
(where Vo is the desired output voltage).
MODEL: APC12 SERIES
JANUARY 6, 2002 REVISION A (PRELIMINARY)
SHEET 11 OF 23
Given:
Rt
= 10k
Vo Adjustment to Lower Voltages.
This method does not limit the recommended lower Vo adjustment to 2% as mentioned
on previous sections re: Vo adjustment through external trim resistor.
Example:
Module version: APC08G03-9 (3V to 6Vin, 2.5Vo).
Requiring to adjust the output voltage from Vo = 2.5V to 1.8V
Vo = 1.8V, V
ref
= 0.87V, R
1
= 3.09k
, R
2
= 1.69k
(from Table 1). Based on Equation (3), Vt = 3.0V.
Example:
Module version: APC08G03-9 (3V to 6Vin, 2.5Vo).
Requiring to adjust the output voltage from Vo = 2.5V to 0.9V
Vo = 0.9V, V
ref
= 0.87V, R
1
= 3.09k
, R
2
= 1.69k
(from Table 1). Based on Equation (3), Vt = 5.9V.
Vo Adjustment to Higher Voltages
Example:
Module version: APC08G03-9 (3V to 6Vin, 2.5Vo).
Requiring to adjust the output voltage from Vo = 2.5V to 3.3V
Vo = 3.3V, V
ref
= 0.87V, R
1
= 3.09k
, R
2
= 1.69k
(from Table 1). Based on Equation (3), Vt = -1.84V.
If application of negative voltage is not desired, the limiting resistor
Rt
can either be changed to a lower value (
Rt
=
1k
, such
that Vt = 0.60V per Equation 3), or use Method 1.
Vo
R
Rt
Vref
R
Rt
R
Rt
Vt
1
2
1
1
+
+
=
Equation (3)
Figure 5. External DC source for output trim adjust.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| APC12MK08-9J | 制造商:ASTEC 制造商全稱:Astec America, Inc 功能描述:Non-Isolated DC/DC Power Module Tiny SMT Footprint - 1.8V-12V Input, 0.9V to 3.6V Output |
| APC12MK08-9MAJ | 制造商:ASTEC 制造商全稱:Astec America, Inc 功能描述:Non-Isolated DC/DC Power Module Tiny SMT Footprint - 1.8V-12V Input, 0.9V to 3.6V Output |
| APC-12S | 制造商:ASTRODYNE 制造商全稱:Astrodyne Corporation 功能描述:5 Watt Ultraminiature Modular Switching Power Supplies |
| APC-12S-DN | 制造商:ARCH 制造商全稱:ARCH 功能描述:AC-DC Switching Power Supply |
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