Pbm27a210mvr Diagram [portable] Full -

Component Overview

• Part Number: PBM27A210MVR
• Manufacturer: Microchip Technology (SMSC)
• Description: USB 2.0 Hub Controller (often found in legacy or industrial computing boards).
• Package Type: Typically a 100-pin LQFP (Low-profile Quad Flat Package) or similar surface-mount format.

Quadrant 3: Gate Driver ICs (Top/Center-Right)

• Typically 3x bootstrap driver ICs (e.g., IR2136, FAN7382, or custom ASIC).
• High-side floating supplies – bootstrap diodes and capacitors (10µF to 47µF).
• Input logic from the main controller: PWM signals (HI1, LI1, HI2, LI2, HI3, LI3).
• Fault output – open-drain "nFAULT" pin.

4. System Control & Configuration

• RESET#: Active low reset pin (usually pulled high with a resistor).
• XTAL1 / XTAL2: Connected to an external crystal oscillator (typically 12 MHz or 24 MHz) to generate the internal clock.
• EE_CLK, EE_CS, EE_DATA: Pins used to interface with an external EEPROM (SPI Interface). This is critical for the hub to load its configuration (like Vendor ID/Product ID).

Q1: Can I use the PBM27A210MVR to get 5V output from 27V?

Yes. Change the feedback resistors so that VOUT * (R_FB2 / (R_FB1+R_FB2)) = 0.8V. For 5V output, if R_FB2 = 1kΩ, then R_FB1 = 5.25kΩ.