Document
TPD4121K
TOSHIBA Intelligent Power Device High Voltage Monolithic Silicon Power IC
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TPD4121K
The TPD4121K is a DC brushless motor driver using high-voltage PWM control. It is fabricated using a high-voltage SOI process. The device contains PWM circuit, 3-phase decode logic, level shift high-side driver, low-side driver, IGBT outputs, FRDs, over-current and under-voltage protection circuits, and a thermal shutdown circuit. It is easy to control a DC brush less motor by applying a signal from a motor controller and a Hall amp/ Hall IC to the TPD4121K.
HDIP26-P-1332-2.00
Features
• • • • • • • • • • High voltage power side and low voltage signal side terminal are separated. Bootstrap circuits give simple high-side supply. Bootstrap diodes are built in. PWM and 3-phase decoder circuit are built in. Outputs Rotation pulse signals. 3-phase bridge output using IGBTs. FRDs are built in.
Weight: 3.8 g (typ.)
Incorporating over-current and under-voltage protection, and thermal shutdown. Package: 26-pin DIP. Compatible with Hall amp input and Hall IC input.
This product has a MOS structure and is sensitive to electrostatic discharge. When handling this product, ensure that the environment is protected against electrostatic discharge.
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TPD4121K
Pin Assignment
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Marking
Lot Code. (Weekly code)
TPD4123K TPD4121K
Part No. (or abbreviation code)
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Block Diagram
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VCC 11
17 BSU 22 BSV 24 BSW 6V regulator Under- Under- Undervoltage voltage voltage protect- protect- protection ion ion 23 VBB
VREG 10
Under-voltage protection HU+ 2 HU- 3 HV+ 4 HV- 5 HW+ 6 HW- 7 Hall Amp 3-phase distribution logic
Level shift high-side driver Thermal shutdown 18 U 21 V 25 W Low-side driver
FR 8 FG 9 VS 14 RREF 13 OS 12 Triangular wave PWM Over-current protection
26 IS2 20 IS1 15 RS 1/16 GND
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Pin Description
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Symbol GND HU+ HUHV+ HVHW+ HWFR FG VREG VCC OS RREF VS RS GND BSU U NC IS1 V BSV VBB BSW W IS2 Ground pin. U-phase Hall amp signal input pin. (Hall IC can be used.) U-phase Hall amp signal input pin. (Hall IC can be used.) V-phase Hall amp signal input pin. (Hall IC can be used.) V-phase Hall amp signal input pin. (Hall IC can be used.) W-phase Hall amp signal input pin. (Hall IC can be used.) W-phase Hall amp signal input pin. (Hall IC can be used.) Forward/Reverse selection pin. Rotation pulse output pin. 6 V regulator output pin. Control power supply pin. PWM triangular wave oscillation frequency setup pin. (Connect a capacitor to this pin.) PWM triangular wave oscillation frequency setup pin. (Connect a resistor to this pin.) Speed control signal input pin. (PWM reference voltage input pin.) Over current detection pin. Ground pin. U-phase bootstrap capacitor connecting pin. U-phase output pin. Unused pin, which is not connected to the chip internally. IGBT emitter/FRD anode pin. V-phase output pin. V-phase bootstrap capacitor connecting pin. High-voltage power supply input pin. W-phase bootstrap capacitor connecting pin. W-phase output pin. IGBT emitter/FRD anode pin. Pin Description
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TPD4121K
Internal Circuit diagrams
Internal circuit diagram of HU+, HU-, HV+, HV-, HW+, HW- input pins
VCC To internal circuit HU+, HU-, HV+, HV-, HW+, HW-, 4 kΩ 19.5 V 2 kΩ
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Internal circuit diagram of VS pin
VCC To internal circuit VS 4 kΩ 19.5 V 25 kΩ 225 kΩ
Internal circuit diagram of FG pin
FG
To internal circuit 250 kΩ
Internal circuit diagram of RS pin
VCC To internal circuit RS 4 kΩ 19.5 V 452 kΩ 10 pF
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Timing Chart
HU
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Hall amp input
HV
HW
VU
Output voltage
VV
VW
Rotation pulse
FG
Note: Hall amp input logic high (H) refers to H*+>H*-.(*:U/V/W)
Truth Table
Hall amp Input FR H H H H H H H H L L L L L L L L HU H H H L L L L H H H H L L L L H HV L L H H H L L H L L H H H L L H HW H L L L H H L H H L L L H H L H U Phase V Phase W Phase FG L H L H L H L L H L H L H L L L High side Low side High side Low side High side Low side ON ON OFF OFF OFF OFF OFF OFF OFF OFF OFF ON ON OFF OFF OFF OFF OFF OFF ON ON OFF OFF OFF ON ON OFF OFF OFF OFF OFF OFF OFF OFF ON ON OFF OFF OFF OFF ON OFF OFF OFF OFF ON OFF OFF ON OFF OFF OFF OFF ON OFF OFF OFF OFF ON ON OFF OFF OFF OFF OFF OFF OFF OFF ON ON OFF OFF OFF ON ON OFF OFF OFF OFF OFF OFF ON ON OFF OFF OFF OFF OFF OFF OFF OFF OFF ON ON OFF OFF
Note: Hall amp input logic high (H) refers to H*+>H*-.(*: U/V/W)
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Absolute Maximum Ratings (Ta = 25°C)
Characteristics Power supply voltage Output current (DC) Output current (pulse) Input voltage (except VS) Input voltage (only VS) VREG current Power dissipation (Tc = 25°C) Operating junction temperature Junction temperature Storage temperature Symbol VBB VCC Iout Ioutp VIN VVS IREG PC Tjopr Tj Tstg Rating 250 20 1 2 -0.5 to VREG + 0..