DC DC Converters

Part Number	Description / PDF	Quantity
CPZ4A36NS Semiconductor Circuits, Inc.	DC DC CONVERTER 5V 20W	4
CP40B1180036P Semiconductor Circuits, Inc.	DC DC CONVERTER 5V 40W	0
CP15C1130018N Semiconductor Circuits, Inc.	DC DC CONVERTER 5V 15W	10
CPT7B48N Semiconductor Circuits, Inc.	DC DC CONVERTER 12V 84W	25
CPT3L48PB Semiconductor Circuits, Inc.	18V 3A 36-75VIN 16TH POS ENB BP	2
CPE4D36PB Semiconductor Circuits, Inc.	24V 4A 18-72VIN 8TH POS ENB W/BA	10
CPE5D48N Semiconductor Circuits, Inc.	DC DC CONVERTER 24V 120W	4
CPE15A18NS Semiconductor Circuits, Inc.	5V 15A 9-36VIN 8TH NEG ENB W/SMT	0
CPE14B48N Semiconductor Circuits, Inc.	12V 14A 36-75VIN 8TH NEG ENB	10
CP30C1775018N Semiconductor Circuits, Inc.	DC DC CONVERTER 3.3V 25W	2
CPE6D24NS Semiconductor Circuits, Inc.	24V 6A 18-36VIN 8TH NEG ENB W/SM	0
CPT3D48NB Semiconductor Circuits, Inc.	24V 3A 36-75VIN 16TH NEG ENB BP	4
CPT20F48P Semiconductor Circuits, Inc.	DC DC CONVERTER 3.3V 66W	2
CPE5R48PB Semiconductor Circuits, Inc.	29.8V 5A 36-75VIN 8TH POS ENB W/	2
CPT15F18NB Semiconductor Circuits, Inc.	3V3 15A 9-36VIN 16TH NEG ENB W/B	10
CPT3L48NB Semiconductor Circuits, Inc.	18V 3A 36-75VIN 16TH NEG ENB BP	2
CPE8B18PS Semiconductor Circuits, Inc.	12V 8A 9-36VIN 8TH POS ENB W/SMT	0
CPT3D48NS Semiconductor Circuits, Inc.	24V 3A 36-75VIN 16TH NEG ENB SMT	0
CPT12F48PS Semiconductor Circuits, Inc.	3V3 12A 36-75VIN 16TH POS ENB W/	0
CPT4L48NS Semiconductor Circuits, Inc.	18V 4A 36-75VIN 16TH NEG ENB SMT	0

DC DC Converters

1. Overview

Board Mount DC-DC Converters are electronic devices that convert direct current (DC) from one voltage level to another through switching technology. They enable voltage regulation and power distribution in embedded systems, providing galvanic isolation, voltage matching, and efficiency optimization. These converters are critical in modern electronics for enabling compact designs, improving energy efficiency, and ensuring stable power delivery in applications ranging from consumer devices to industrial equipment.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Non-Isolated Converters	Shared ground reference, high efficiency (85-95%), low cost	Point-of-load regulation in servers
Isolated Converters	Galvanic isolation (1-6kV), reinforced safety, wide input range	Medical equipment power supplies
Step-Down (Buck)	Converts higher input to lower output voltage	12V to 3.3V for microprocessors
Step-Up (Boost)	Increases input voltage to higher output levels	5V to 12V for display backlighting
Bidirectional	Supports power flow in both directions	Energy storage systems in EVs

3. Structure and Components

Typical construction includes:

Input EMI filter (common-mode choke + capacitors)
Power MOSFET/IGBT switching stage
Planar transformer (for isolation types)
PWM controller IC with feedback loop
Synchronous rectifier (for high-efficiency designs)
Output LC filter (inductor + ceramic capacitors)

4. Key Technical Specifications

Parameter	Importance
Input Voltage Range	Determines compatibility with power sources
Output Voltage Accuracy	Ensures stable power for sensitive circuits
Efficiency (Typ. 80-97%)	Impacts thermal performance and energy costs
Power Density (W/in )	Key metric for space-constrained applications
Operating Temperature	Defines performance in harsh environments
Isolation Voltage	Safety compliance for medical/industrial use

5. Application Fields

Major industries include:

Telecommunications (5G base stations, optical networking equipment)
Industrial Automation (PLCs, robotics controllers)
Medical Devices (patient monitoring systems, imaging equipment)
Consumer Electronics (gaming consoles, VR headsets)
Renewable Energy (solar inverters, energy storage systems)

6. Leading Manufacturers and Products

Manufacturer	Product Series	Key Features
TI (Texas Instruments)	LM5145	65V input, 2.5A output, 95% efficiency
Monolithic Power	MPQ4420	45V input, 2A output, 3x3mm QFN package
Vicor	DCM3114	48V to 12V, 180W, 342W/in power density
CUI Inc	VX78-1000	1000V isolation, 10W output, medical grade

7. Selection Guidelines

Key factors to consider:

Input/output voltage requirements and transient response
Load current profile (continuous vs peak demands)
Thermal management capabilities
Form factor constraints (e.g., 1/16th brick standard)
Protection features (OVP, OCP, OTP)
Compliance certifications (CE, UL, IEC 60601-1)

8. Industry Trends

Current development directions include:

Adoption of GaN/SiC wide bandgap semiconductors for >97% efficiency
Digital control loops for dynamic voltage scaling
3D packaging to achieve >500W/in power density
Integrated magnetics for reduced component count
Smart converters with PMBus interface for telemetry