TOSHIBA TB6556F, TB6556FG Technical data

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TB6556F/FG

TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic

TB6556F/FG

3-Phase Full-Wave Sine-Wave PWM Brushless Motor Controller

Features

•Sine-wave PWM control

•Built-in triangular-wave generator (carrier cycle = fosc/252 (Hz))

•Built-in lead angle control function (0° to 58° in 32 steps) External setting/automatic internal setting

•Built-in dead time function (setting 2.6 µs or 3.8 µs)

•Supports bootstrap circuit

•Overcurrent protection signal input pin

•	Built-in regulator (Vrefout = 5 V (typ.), 30 mA (max))	Weight: 0.33 g (typ.)
•	Operating supply voltage range: VCC = 6 V to 10 V

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TB6556FG:

TB6556FG is a Pb-free product.

The following conditions apply to solderability: *Solderability

1.Use of Sn-63Pb solder bath *solder bath temperature = 230˚C *dipping time = 5 seconds *number of times = once

*use of R-type flux

2.Use of Sn-3.0Ag-0.5Cu solder bath *solder bath temperature = 245˚C *dipping time = 5 seconds

*the number of times = once *use of R-type flux

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.DataSheet4U	et4U
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com						TB6556F/FG
Block Diagram
Gin	Gout	PH	LPF	LA	UL	LL
24	25	26	27	28	30	29

com.DataSheet4U

				Peak hold	+	Filter		Upper limit
								Lower limit
Xin	14	System clock						6-bit triangular
Xout	15	generator						wave generator
				5-bit AD
HU	21								Phase U	Comparator
HV	20	Position detector		Counter
HW	19					Output		Data	Phase V	Comparator
						waveform	.DataSheet4U	select
		Internal		Phase		generator
GND	13									Charger	and
Ve	2	reference		matching					Phase W	Comparator
		voltage
VCC
	1	Regulator
										120/180	Switching
											120°/180°
Vrefout	23		Rotating				com	Comparator	PWM		gate block
		FG									protection
		Power-on	direction						HU		on/off
		reset
									HV
RES	11									120°-
									HW
										turn-on
Idc	3			ST/SP						matrix

CW/CCW

CW/CCW	18	Protection	ERR
		&	GB
SS	22	reset
FG	17
EV	16

Setting dead time

10 Td

9 U 6 X

8 V 5 Y

7 W 4 Z

12 OS

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TB6556F/FG

Pin Description

Pin No.

Symbol

Description

Remarks

21

HU

Positional signal input pin U

When positional signal is HHH or LLL, gate block protection operates.

20

HV

Positional signal input pin V

With built-in pull-up resistor, built-in digital filter ( − 500 ns)

19

HW

Positional signal input pin W

18

CW/CCW

Rotation direction signal input

L: Forward

pin

H: Reverse

L: Reset (output is non-active)

11

RES

Reset-signal-input pin

operation/halt operation, also used for gate protection,

built-in pull-up resistor

2

Ve

Voltage command signal

With built-in pull-down resistor

24

Gin

Gain setting

Idc signal level at a gain that optimizes the LA

25

Gout

26

PH

Peak hold

Connect the peak-hold capacitor and discharge resistor to GND, parallel

to each other

27

LPF

RC low-pass filter

Connect the low-pass filter capacitor (built-in 100 kΩ resistor)

28

LA

Lead angle setting signal

Sets 0° to 58° in 32 steps

input pin

29

LL

Lower limit for LA

Set lower limit for LA (LL = 0 V to 5.0 V)

30

UL

Upper limit for LA

Set upper limit for LA (UL = 0 V to 5.0 V)

12

OS

Inputs output logic select

L: Active LOW

signal

H: Active HIGH

et4U.com

Inputs overcurrent protection

Inputs DC link current.

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3

Idc

Reference voltage: 0.5 V

signal

With built-in filter ( 1 µs), built-in digital filter ( −

1 µs)

14

Xin

Inputs clock signal

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With built-in feedback resistor

15

Xout

Outputs clock signal

23

Vrefout

Outputs reference voltage

5 V (typ.), 30 mA (max)

signal

17

FG

FG signal output pin

Outputs 3 PPR of positional signal

16

REV

Reverse rotation detection

Detects reverse rotation.

signal

9

U

Outputs turn-on signal

8

V

Outputs turn-on signal

7

W

Outputs turn-on signal

Select active HIGH or active LOW using the output logic select pin.

6

X

Outputs turn-on signal

5

Y

Outputs turn-on signal

4

Z

Outputs turn-on signal

1

VCC

Power supply voltage pin

VCC = 6 to 10 V

10

Td

Inputs setting dead time

L: 3.8 µs, H or OPEN: 1.9 µs

22

SS

120°/180° select signal

L: 120° turn-on mode, H or OPEN: 180° turn-on mode

13

GND

Ground pin

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Input/Output Equivalent Circuits

	Pin Description	Symbol	Input/Output Signal
			Digital
	Positional signal input pin U	HU	With Schmitt trigger
			Hysteresis 300 mV (typ.)
	Positional signal input pin V	HV
			Digital filter: 500 ns (typ.)
	Positional signal input pin W	HW
			L: 0.8 V (max)
			H: Vrefout − 1 V (min)

Forward/reverse switching	Digital
input pin	CW/CCW
L: Forward (CW)	L: 0.8 V (max)
H: Reverse (CCW)	H: Vrefout − 1 V (min)

.com	Reset input		Digital
		RES
et4U	L: Stops operation (reset)		L: 0.8 V (max)
	H: Operates		H: Vrefout − 1 V (min)

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	Digital
120°/180° select signal	With Schmitt trigger
SS	Hysteresis: 300 mV (typ.)
L: 120° turn-on mode
H: 180° turn-on mode	L: 0.8 V (max)
(OPEN)	H: Vrefout − 1 V (min)

Voltage command signal		Analog
1.0 V < Ve ≤ 2.1 V	Ve	Input voltage range 0 to 5.4 V
Refresh operation
(X, Y, Z pins: ON duty of		Input voltage of 5.4 V or higher is
		clipped to 5.4 V.
8%)

TB6556F/FG

Input/Output Internal Circuit

Vrefout Vrefout

200 kΩ

2.0 kΩ

Vrefout Vrefout

100 kΩ

2.0 kΩ

Vrefout Vrefout

100 kΩ

2.0 kΩ

Vrefout Vrefout

200 kΩ

2.0 kΩ

VCC

100 Ω

150 kΩ

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					TB6556F/FG
	Pin Description	Symbol	Input/Output Signal	Input/Output Internal Circuit
			When LA is fixed externally, connect
			LL to GND and UL to Vrefout, and then	VCC
			input the setting voltage to the LA pin.
	Lead angle setting signal		Input voltage range: 0 V to 5.0 V
	input pin
			(Vrefout)	100 Ω
	0 V: 0°	LA
			Input voltage of Vrefout or higher is
				kΩ
	5 V: 58°
	(5-bit AD)		clipped to Vrefout.	200	Automatic LA
			When LA is fixed automatically, open
					circuit
			the LA pin. In this state, the LA pin is
			used only for confirmation of LA width.
				VCC	VCC
			Non-inverted amplifier	100 Ω
	Gain setting signal input	Gin	25 dB (max)
			Gout output voltage	Gin	Gout
	(LA setting)	Gout
			LOW: GND
			HIGH: VCC − 1.7 V
				Idc	To peak
					hold circuit
				VCC
.com			Connect the peak-hold capacitor and
et4U	Peak hold	PH	discharge resistor to GND, parallel to		100 Ω
	(LA setting)		each other.
			100 kΩ/0.1µF recommended		100 Ω
			DataSheet4U.com

VCC

Low-pass filter

Connect the low-pass filter capacitor

100 kΩ

LPF

(built-in 100 kΩ resistor)

(LA setting)

0.1µF recommended

100 Ω

VCC

Clip lower limit for LA

100 Ω

Lower limit for LA

LL

LL = 0 V to 5.0 V

When LL > UL, LA is fixed at LL value.

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Pin Description

Symbol

Input/Output Signal

Clip upper limit for LA

Upper limit for LA UL UL = 0 V to 5.0 V

When LL > UL, LA is fixed at LL value.

Setting dead time input pin		Digital
L: 3.8 µs	Td	L: 0.8 V (max)
H or OPEN: 1.9 µs		H: Vrefout − 1 V (min)

	Output logic select signal	Digital
	input pin	OS
.com	L: Active LOW	L: 0.8 V (max)
	H: Active HIGH	H: Vrefout − 1 V (min)
et4U
		DataSheet4U.com
		Analog
	Overcurrent protection	Digital filter: 1 µs (typ.)
	signal input pin	Idc
		Gate protected at 0.5 V or higher
		(released at carrier cycle)

Clock signal input pin

Xin

Operating range

2 MHz to 8 MHz (crystal oscillation)

Clock signal output pin

Xout

TB6556F/FG

Input/Output Internal Circuit

VCC

100 Ω

Vrefout Vrefout

100 kΩ

2 kΩ

Vrefout Vrefout

100 kΩ

2 kΩ

VCC 100 Ω

		Gout
	200 kΩ	Gin
		Comparator
	5 pF	0.5 V

Vrefout Vrefout

Xin Xout

360 kΩ

DataShe

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TB6556F/FG

Pin Description

Symbol

Input/Output Signal

Input/Output Internal Circuit

VCC VCCVCC

Reference voltage signal	Vrefout 5 ± 0.5 V (max 30 mA)
output pin

Vrefout

Vrefout

Reverse-rotation-detection

Digital

REV

signal output pin

Push-pull output: ± 1 mA (max)

100 Ω

.com
et4U	DataShe
Vrefout	Vrefout

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Digital

FG signal output pin FG

Push-pull output: ± 1 mA (max) 100 Ω

Vrefout

Turn-on signal output pin U

U

Analog

Turn-on signal output pin V

V

Push-pull output: ± 2 mA (max)

Turn-on signal output pin W

W

Turn-on signal output pin X

X

100 Ω

Turn-on signal output pin Y

Y

L: 0.78 V (max)

Turn-on signal output pin Z

Z

H: Vrefout − 0.78 V (min)

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