TB62217AFG datasheet(55/61 Pages) TOSHIBA

Part #	TB62217AFG

Description	PWM drive Stepping Motor Driver / Brush DC Motor Driver Selectable, DC-DC Converter and Reset function IC

Download	61 Pages

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Manufacturer	TOSHIBA [Toshiba Semiconductor]

Direct Link	http://www.semicon.toshiba.co.jp/eng

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55 / 61 page

TB62217AFG

2004-11-12

55

VSD Threshold Change Timing During DC-DC Converter Block Current Limiter

Operation

When the limiter enters an operating state, the VSD circuit starts operating if this state continues for 3 OSC_D

periods.

OSC_D

OSC_D_CLK

(Internal signal)

Limiter

operating state

VSD threshold

change (L:

−15%)

Limiter

operating state

VSD threshold

change (L:

−15%)

Limiter

operating state

VSD threshold

change (L:

−15%)

Limiter

operating state

VSD threshold

change (L:

−15%)

Case 1

Case 2

Case 3

Case 4

(3)

(1)

(2)

(1)

(2)

(3)

(1)

(2)

(4)

VSD detected

→ shut-down

Normal operation continued

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TB62217AFG Datasheet(PDF) 55 Page - Toshiba Semiconductor

TB62217AFG Datasheet(HTML) 55 Page - Toshiba Semiconductor

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