SBASB99 November 2025 AMC1200C
PRODUCTION DATA
- 1
- 1 Features
- 2 Applications
- 3 Description
- 4 Pin Configuration and Functions
-
5 Specifications
- 5.1 Absolute Maximum Ratings
- 5.2 ESD Ratings
- 5.3 Recommended Operating Conditions
- 5.4 Thermal Information?(DWV Package)
- 5.5 Thermal Information?(DUB Package)
- 5.6 Power Ratings
- 5.7 Insulation Specifications
- 5.8 Safety-Related Certifications
- 5.9 Safety Limiting Values (DWV Package)
- 5.10 Safety Limiting Values (DUB Package)
- 5.11 Electrical Characteristics
- 5.12 Switching Characteristics
- 5.13 Timing Diagram
- 5.14 Insulation Characteristics Curves
- 5.15 Typical Characteristics
- 6 Detailed Description
- 7 Application and Implementation
- 8 Device and Documentation Support
- 9 Revision History
- 10Mechanical, Packaging, and Orderable Information
7.4 Power Supply Recommendations
In a typical application, the high-side power supply (VDD1) for the AMC1200C is generated from the low-side supply (VDD2) by an isolated DC/DC converter. A low-cost option is based on the push-pull driver SN6501 and a transformer that supports the desired isolation voltage ratings.
The AMC1200C does not require any specific power-up sequencing. The high-side power supply (VDD1) is decoupled with a low-ESR, 100nF capacitor (C1) parallel to a low-ESR, 1μF capacitor (C2). The low-side power supply (VDD2) is equally decoupled with a low-ESR, 100nF capacitor (C3) parallel to a low-ESR, 1μF capacitor (C4). Place all four capacitors (C1, C2, C3, and C4) as close to the device as possible. Figure 7-5 shows a decoupling diagram for the AMC1200C.
Figure 7-5 Decoupling of the AMC1200CVerify capacitors provide adequate effective capacitance under the applicable DC bias conditions experienced in the application. Multilayer ceramic capacitors (MLCC) typically exhibit only a fraction of the nominal capacitance under real-world conditions. Consider this factor when selecting these capacitors. This issue is especially acute in low-profile capacitors, where the dielectric field strength is higher than in taller components. Reputable capacitor manufacturers provide capacitance versus DC bias curves that greatly simplify component selection.