TB6584AFNG(O,C8,EL Toshiba, TB6584AFNG(O,C8,EL Datasheet - Page 10

• Manufacturer Part Number: TB6584AFNG(O,C8,EL
• Description: Motor / Motion / Ignition Controllers & Drivers Brushless Motor DRVR 3-Phase 1A 45V
• Manufacturer: Toshiba
• Type: 3 Phase BLDC Motor Controllerr

Specifications of TB6584AFNG(O,C8,EL

• Rohs: yes
• Product: Brushless DC Motor Controllers
• Operating Supply Voltage: 16.5 V
• Supply Current: 2 mA
• Package / Case: SSOP-30

Functional Description
1. Basic Operation
2. Voltage Command (V
During startup, the motor is driven by square-wave commutation signals that are generated according to
the position signals. When the position signals indicate a rotational speed (f) of 5 Hz, the TB6584AFNG
estimates the rotor positions from the position signals and modulate them. The TB6584AFNG then
generates sine-wave by comparing the modulated signals against a triangular waveform.
(1)
(2)
(3)
(4)
From startup to 5 Hz: square-wave drive (120° commutation); f = f
5 Hz to: Sine-wave PWM drive (180° commutation); f will be approximately 5.7 Hz when f
When V
The commutation signal outputs are disabled (i.e., gate protection is activated).
When 1.0 V < V
The low-side transistors are turned on at a regular (PWM carrier) frequency. (The conduction duty
cycle is approx. 8%.)
When 2.1 V < V
During sine-wave PWM drive, the commutation signals directly appear externally. During
square-wave drive, the low-side transistors are forced on at a regular (PWM carrier) frequency. (The
conduction duty cycle is approx. 8%.)
When 8.2 V ≤ V
The TB6584AFNG drives in sine-wave drive mode with lead angle of zero. However, it drives in
square-wave mode in detecting reverse rotation.
When V
The PWM duty cycle is calculated as
(5.4 V≦ V
SP
SP
SP
≤ 1.0 V:
reaches 7.9 V (typ.), lead angle switches to zero.
(typ.)).
SP
SP
SP
95%
PWM duty cycle
≤ 2.1 V:
≤ 7.3 V:
≤ 10 V (test mode):
SP
) Signal and Bootstrap Voltage Regulation
(1)
1.0 V
(2)
2.1 V
PWM_carrier_frequency
10
(3)
5.4 V
7.3 V 8.2 V
(4)
× 92% (typ.) and kept the constant value
10 V
osc
/ (2
V SP
12
× 32 × 6)
TB6584AFNG
osc
2010-05-27
= 4.5 MHz