tb62300fg TOSHIBA Semiconductor CORPORATION, tb62300fg Datasheet

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tb62300fg

Manufacturer Part Number
tb62300fg
Description
Dual Full-bridge Driver For Dc Motor
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
Dual Full-Bridge Driver for DC Motor
The TB62300FG is a dual brushed DC motors driver IC
employing a chopper-based forward/reverse full-bridge
mechanism. It controls two brushed DC motors at high precision.
The motor supply voltage is up to 40 V and the V
voltage is 5.0 V.
Features
A single IC can drive two brushed DC motors.
Monolithic Bi-CMOS IC
Low ON-resistance (R
Selectable current control: PWM current control using the
PHASE pin or serial control
5-bit DA converter for specifying current value and 2-bit DA converter for determining torque
MIXED DECAY mode enables specification of current decay rate in four steps.
Self-oscillation chopping frequency with external resistor and capacitor
High-speed chopping at 100 kHz or higher
ISD, TSD, and POR (V
Charge pump circuit (two external capacitors) for driving output
36-pin package: HSOP36 with heat sink
Output voltage: 40 V (max)
Output current: 2.5 A max (in steady-state phase) or 8 A max (pulsed output)
Note: The values specified in this document are designed values, which are not guaranteed.
on
DD
) = 0.3 Ω (T
/V
M
) protection circuits
TOSHIBA BiCD IC Silicon Monolithic
j
TB62300FG
= 25°C at 2.0 A typ.)
DD
supply
1
Weight: 0.79 g (typ.)
TB62300FG
2005-04-04

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tb62300fg Summary of contents

Page 1

... Dual Full-Bridge Driver for DC Motor The TB62300FG is a dual brushed DC motors driver IC employing a chopper-based forward/reverse full-bridge mechanism. It controls two brushed DC motors at high precision. The motor supply voltage and the V voltage is 5.0 V. Features A single IC can drive two brushed DC motors. • ...

Page 2

... Analog data IC pin 16-bit latch Current value controller (5-bit D/A) Output control circuit R comparator S circuit Mixed decay control Output circuit (H-bridge) Out X Brushed DC Motor 2 TB62300FG V DD Chopping reference circuit Chopping waveform generator circuit Waveform squaring circuit MODE PHASE ENABLE Output pre driver BRAKE ...

Page 3

... IC to break down OUT, P-GND, V and TB62300FG SLEEP 34 ENABLE B 33 ENABLE A 32 PHASE B 31 PHASE A 30 DATA B 29 DATA A 28 ...

Page 4

... Data input: referred to rising edge Data input: Data input: PWM signal input pin: PWM signal input pin:: L: output stopped L: output stopped Internal logic cleared and charge pump stopped Reference pin for B-axis supply voltage Logic ground Logic ground 4 TB62300FG Remarks 2005-04-04 ...

Page 5

... DD Toshiba test mode Does not affect normal operation of the IC. Does not affect normal operation of the IC. 5 TB62300FG Output Operation at Low Does not affect normal operation of the IC. Does not affect normal operation of the IC. Normal operation mode Does not affect normal operation of the IC ...

Page 6

... TB62300FG Logic Note: When PWM control is selected, serial data bits are valid while D7 to D13 are invalid. All internal circuits, including charge pumps, are stopped. Output transistors turned on Output transistors turned off PHASE and ENABLE pins disabled ...

Page 7

... Set current Switch phase ⎯ ⎯ ⎯ D10 A11 A10 TB62300FG Recovery Time = 2.0 ms (typ.)/4.0 ms (max) = 2.0 ms (typ.)/4.0 ms (max) = 2.0 ms (typ.)/4.0 ms (max) = 2.0 ms (typ.)/4.0 ms (max) Initial When PWM is Initial State Value Operating 0 1 ÷ fchop ÷ 16 × 7 Enabled 25% Enabled ...

Page 8

... Torque Torque Function Mode 1 Mode TB62300FG TBlank 0 Setting TBlank (typ.) 1 ÷ f ÷ 16 × Chop 1 ÷ f ÷ 16 × Chop 1 ÷ f ÷ 16 × Chop 1 ÷ f ÷ 16 × Chop 1 ÷ f ÷ 16 × 5 ...

Page 9

... Function Phase 0 Negative 1 Positive 9 TB62300FG Current 1 Current 0 Setting Current 32% ...

Page 10

... Consequently, the blanking time as viewed from outside the IC is within the range from one fcr cycle (TBlank (000)) to eight fcr cycles (TBlank (111 phase difference between PHASE and fcr (up to two fcr cycles ・・・・・ 10 TB62300FG 2005-04-04 ...

Page 11

... open (Hi-Z) is less likely to damage the IC, although it is not recommended. (Ω) ) × Current (%) RS (GAIN):V attenuation ratio. ref ref = f /16 [Hz] CR chop = 270 pF and R = 3.9 kΩ: f OSC OSC 11 TB62300FG Rating Unit − 0 8.0 A 2.5 A − 0 ± ...

Page 12

... V RS (MH) TORQUE = 10 = 75% set (gain) = 1/3.0 V ref ref V RS (ML) TORQUE = 01 = 50% set (gain) = 1/3.0 ref ref V RS (L) TORQUE = 00 = 25% set 12 TB62300FG = 5 25℃) DD opr Min Typ. Max ⎯ ⎯ 2.0 ⎯ ⎯ 0.8 ⎯ ⎯ 1.0 ⎯ ⎯ 1.0 ⎯ ⎯ 200.0 ⎯ ...

Page 13

... M DD (GAIN) SLEEP T TSD ISD Vpor Vpor (max). 13 TB62300FG = 5 25℃) DD opr Min Typ. Max − 5.0 ⎯ 5.0 = 1.5 A) − 5.0 ⎯ 5 ⎯ 0.3 0 ⎯ 0.3 0 ⎯ 0.4 0. ⎯ 0.4 0.55 = 5.0 V, ⎯ ...

Page 14

... AC t pLZ t pHZ t pZL t pZH = 270 pF osc f chop (min) f chop (typ.) f chop (max) f When f = 480 kHz chop ONG 14 TB62300FG 6.8 mH/5.7 Ω) Min Typ. Max 1.0 ⎯ 25.0 ⎯ ⎯ 40.0 ⎯ ⎯ 20.0 20.0 ⎯ ⎯ 40.0 ⎯ ⎯ ⎯ ⎯ 20.0 ⎯ ⎯ 20.0 t ⎯ ⎯ ...

Page 15

... SLEEP A LGND ( PHASE A PHASE ENABLE ENABLE B MODE A MODE B P-GND BRAKE A BRAKE B Ccp 1 Ccp 2 Ccp 3 Ccp 2 Ccp 1 0.022 µ F 0.22 µ TB62300FG I ref A I LGND ref A LGND 0.22 Ω ...

Page 16

... IN PHASE A B PHASE B B ENABLE ENABLE B MODE A MODE B P-GND BRAKE A BRAKE B Ccp 1 Ccp 2 Ccp 3 Ccp 2 Ccp 1 0.022 µ F 0.22 µ ONG 16 TB62300FG I ref A LGND LGND 1.0 Ω OUT1 Motor M DC Motor A 1.0 Ω ...

Page 17

... AC Test Waveforms DATA DATA 15 t hDATA t sDATA CLOCK t sSTROBE STROBE SLEEP PHASE Out A PHASE ENABLE Out A 50% t dCLOOK 50% t wSTROBE 50% t wSLEEP 50% t pLH 50% t pZL t t pZH pHZ 17 TB62300FG DATA 0 DATA CLK) 50 pHL t pLZ 2005-04-04 ...

Page 18

... OFF OFF (Note) Load PGND Slow mode U2 L1 OFF OFF OFF OFF ON OFF OFF 18 TB62300FG f chop pin S U1 OFF (Note) Load L1 ON OFF PGND Fast mode OFF L2 OFF ON ON 2005-04- ...

Page 19

... V , applying a signal to the SLEEP pin at the above timing reaches more voltage within the rating are applied, output is turned off by internal reset TB62300FG until operable pin, the drops to the level below while M MR time after power on ...

Page 20

... Ta (Package power dissipation) D Transient thermal resistance (1) HSOP36 R without a board (96°C/W) th (j-a) (2) When mounted on a board (140 mm × × 1.6 mm: 38°C/W: typ.) Note 8.5°C/W th (j-a) P – 3.5 (2) 3 2.5 2 1.5 ( 100 125 Ambient temperature Ta (°C) 20 TB62300FG 150 2005-04-04 ...

Page 21

... Recommended operation area Usable area Supply voltage V (V) M Charge pump voltage Ccp A) ( (Maximum rating TB62300FG V M voltage Maximum rating (40 V)) 2005-04-04 40 ...

Page 22

... Ccp 1 is charged from Ccp 2 via Di2. r2 and V (Ccp A pin voltage = charge pump voltage switching and the potential of V chop Output switching Steady-state phase (2) (3) (4) ( TB62300FG = Ccp (2) Ccp B Ccp 2 (2) 0.022 µ F Ccp 1 0.22 µ F ...

Page 23

... When the voltage does not increase sufficiently, R lower than the reference value, which raises the temperature. Thus, use the capacitors under the capacitor combination conditions (Ccp 1 = 0.22 µF, Ccp 2 = 0.022 µF) recommended by Toshiba. t ONG or longer before driving the motors. ONG 23 TB62300FG Ccp 1 voltage + ...

Page 24

... Some capacitors exhibit a large change in capacitance according to the temperature. Make sure the above capacitance is obtained under the IC ambient temperature 150 kHz under the conditions chop Ccp 1 – Ccp 2 0.05 Applicable range 0.045 0.04 0.035 0.03 0.025 0.02 Recommended 0.015 0.01 0.005 0 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Ccp 1 capacitance (µF) 24 TB62300FG M value 2005-04- and ...

Page 25

... CLK B R DATA SLEEP A LGND PHASE A B PHASE B B ENABLE ENABLE B MODE A MODE B P-GND BRAKE A BRAKE B Ccp 1 Ccp 2 Ccp 3 Ccp 2 Ccp 1 0.022 µ F 0.22 µ TB62300FG LGND 0.11 Ω Motor M DC Motor 0.11 Ω PGND LGND 2005-04-04 ...

Page 26

... NC 10 TEST A NC TEST B 11 TEST BRAKE A 14 BRAKE OUT A − 17 PGND 18 OUT Signal from central unit 26 TB62300FG 0.5 Ω SLEEP 35 ENABLE B 34 ENABLE A 33 PHASE B 32 PHASE A 31 DATA B 30 DATA A 29 CLK B 28 LGND CLK A ...

Page 27

... Package Dimensions HSOP36-P-450-0.65 Weight: 0.79 g (typ.) 27 TB62300FG Unit: mm 2005-04-04 ...

Page 28

... The products described in this document are subject to the foreign exchange and foreign trade laws. • TOSHIBA products should not be embedded to the downstream products which are prohibited to be produced and sold, under any law and regulations. 28 TB62300FG 030619EBA 2005-04-04 ...

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