M63155FP Renesas Electronics Corporation., M63155FP Datasheet - Page 14

• Manufacturer Part Number: M63155FP
• Description: 3 Phase Brushless Motor Controller
• Manufacturer: Renesas Electronics Corporation.

M63155FP
Function Explanation
1. VM terminal (VM)
2. VCC terminals (VCC1, VCC2)
3. Hall Input Terminals (HU, HV, HW)
4. Output Terminals (UT, VT, WT, U, V, W, UB, VB, WB)
Rev.1.0, Sep.16.2003, page 14 of 40
The power supply for the M63155FP is connected between this terminal and GND.
The 5V power supply for the M63155FP is connected between these terminals and GND.
The VCC1 supplies small signal 5V, and the VCC2 supplies big signal 5V (for Charge Pump).
*Notes: In order to ensure proper coast/braking operation even after detecting power loss, it is necessary to make
These terminals are connected to the Hall effect commutation IC’s output of the brushless motor, which have open-
collector outputs.
These terminals are the gate drive outputs for the external MOS FETs. UT, VT and WT are the gate drive outputs
for the top side external MOS FETs. U, V and W are connected to the motor output terminals and the source
terminals of the top side external MOS FETs. UB, VB and WB are the gate drive outputs for the bottom side
external MOS FETs.
The calculation method of a minimum value for Cvcc1, given a minimum hold-up time requirement (t).
Coarse hold-up calculation
Cvcc1(min) = t x iss / [Vcc1(nom) - Vcc1(min)]
for C in farads:
The state of the fault latch and the guaranteed function of other shutdown circuits is maintained by the charge
held on Cvcc1. Therefore, the length of this extended operation is determined by the value of Cvcc1.
the VCC1 supplies maintain externally.
t = hold-up time (sec)
iss = steady-state Vcc1 node current in fault mode (A)
V = delta V from nominal to minimum (volts)