MAX5069
High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers
2.5MHz, Universal-Input, Dual-Output PWM Controller with Precision-Programmable Switching Frequency and Start/Stop Voltage
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Overview
Features and Benefits
- Current-Mode Control with 47µA (typ) Startup Current
- Oscillator Frequency Programmable to 2.5MHz
- Resistor-Programmable ±4.5% Accurate Switching Frequency
- Dual Gate-Drive Output for Half/Full-Bridge or Push-Pull Applications
- Rectified 85VAC to 265VAC, or 36VDC to 72VDC Input (MAX5069A/B)
- Input Directly Driven from 10.8V to 24V (MAX5069C/D/E)
- Programmable Dead Time and Slope Compensation
- Programmable Startup Voltage (UVLO)
- Programmable UVLO Hysteresis (MAX5069B/C/E)
- Frequency Synchronization Input (MAX5069A/D)
- -40°C to +125°C Automotive Temperature Range
- 16-Pin Thermally Enhanced TSSOP-EP Package
Product Details
The MAX5069 is a high-frequency, current-mode, pulse-width modulation (PWM) controller (with dual MOSFET drivers) that integrates all the building blocks necessary for implementing AC-DC or DC-DC fixed-frequency power supplies. Isolated or nonisolated pushpull and half/full-bridge power supplies are easily constructed using either primary- or secondary-side regulation. Current-mode control with leading-edge blanking simplifies control-loop design and a programmable internal slope-compensation circuit stabilizes the current loop when operating at duty cycles above 50%.
An input undervoltage lockout (UVLO) programs the input-supply startup voltage and ensures proper operation during brownout conditions.
A single external resistor programs the oscillator frequency from 50kHz to 2.5MHz. The MAX5069A/D provide a SYNC input for synchronization to an external clock. The maximum FET-driver duty cycle for the MAX5069 is 50%. Programmable dead time allows additional flexibility in optimizing magnetic design and overcoming parasitic effects. Programmable hiccup current limit provides additional protection under severe faults.
The MAX5069 is specified over the -40°C to +125°C automotive temperature range and is available in a 16-pin thermally enhanced TSSOP-EP package. Refer to the MAX5068 data sheet for single FET-driver applications.
Warning: The MAX5069 is designed to work with high voltages. Exercise caution.
Applications
- Industrial Power Conversion
- Isolated Telecom Power Supplies
- Networking System Power Supplies
- Server Power Supplies
- Universal-Input AC Power Supplies
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Documentation & Resources
Product Recommendations
MAX5069 Companion Parts
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| MAX5069AAUE+ | Material Declaration | Reliability Data | 16-TSSOP_4.4_EP-4.4_MM | |
| MAX5069BAUE+ | Material Declaration | Reliability Data | 16-TSSOP_4.4_EP-4.4_MM | |
| MAX5069BAUE+T | Material Declaration | Reliability Data | 16-TSSOP_4.4_EP-4.4_MM | |
| MAX5069CAUE+ | Material Declaration | Reliability Data | 16-TSSOP_4.4_EP-4.4_MM | |
| MAX5069CAUE+T | Material Declaration | Reliability Data | 16-TSSOP_4.4_EP-4.4_MM | |
| MAX5069DAUE+ | Material Declaration | Reliability Data | 16-TSSOP_4.4_EP-4.4_MM | |
| MAX5069DAUE+T | Material Declaration | Reliability Data | 16-TSSOP_4.4_EP-4.4_MM | |
| Wafer Fabrication Data |
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.