Texas Instruments SN6505A-Q1 | Demoboard PMP22992

Description

This isolated power supply provides dual +15-V outputs at 120 mA each. This power supply is designed for biasing a MOSFET-based power stage that generates excitation for a separately excited synchronous motor (SSM). This design uses a combination of the LMR50410-Q1 buck pre-regulator and the SN6505-Q1 open-loop transformer driver with spread-spectrum modulation. The wide-input voltage range and flexibility make this a versatile design for wide range of applications where isolated power is necessary. This internal reference design is an alternative to the PMP22760 which uses a single-chip solution based on LM5180-Q1.

Features

• AEC-Q100 (Grade 1) qualified for automotive applications
• Device temperature grade 1:–40°C to +125°C, TA
• Functional Safety-Capable
• Documentation available to aid functional safety system design:SN6505A-Q1, SN6505B-Q1, SN6505D-Q1
• Push-pull driver for transformers
• Wide input voltage range:2.25 V to 5.5 V
• High output drive: 1 A at 5 V supply
• Low RON 0.25 Ω max at 4.5 V supply
• Reduced conducted and radiated EMI
• Spread spectrum clocking
• Precision internal oscillator options:160 kHz (SN6505A-Q1) and 420 kHz (SN6505B-Q1 and SN6505D-Q1)
• Synchronization of multiple devices with external clock input
• Slew-rate control
• 1.7 A Current-limit
• Low shutdown current:<1uA
• Thermal shutdown
• Small 6-Pin SOT23 (DBV) package
• Soft-start enabled (SN6505A-Q1 and SN6505BQ1) to reduce in-rush current and soft-start disabled (SN6505D-Q1) for fast start-up

Typical applications

• Isolated power supplies for–Traction inverter and motor control–DC/DC converter–Battery management system (BMS)–On-board charger (OBC)

More information

• Datasheet
• IC product information