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UBA2081 Dataheets PDF



Part Number UBA2081
Manufacturers NXP
Logo NXP
Description Half-bridge driver IC
Datasheet UBA2081 DatasheetUBA2081 Datasheet (PDF)

UBA2080; UBA2080A; UBA2081 Half-bridge driver IC Rev. 3 — 18 June 2012 Product data sheet 1. General description The UBA2080(A) and UBA2081 are high voltage monolithic integrated circuits made using the latch-up free Silicon-On-Insulator (SOI) process. The circuit is designed for driving MOSFETs in a half-bridge configuration. 2. Features and benefits  Latch-up free and robust half bridge driver  Output driver capability: IO(sink) = 400 mA and IO(source) = 200 mA  Maximum frequency 800 k.

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UBA2080; UBA2080A; UBA2081 Half-bridge driver IC Rev. 3 — 18 June 2012 Product data sheet 1. General description The UBA2080(A) and UBA2081 are high voltage monolithic integrated circuits made using the latch-up free Silicon-On-Insulator (SOI) process. The circuit is designed for driving MOSFETs in a half-bridge configuration. 2. Features and benefits  Latch-up free and robust half bridge driver  Output driver capability: IO(sink) = 400 mA and IO(source) = 200 mA  Maximum frequency 800 kHz  UBA2080:  Outputs in phase with HIN and LIN inputs  Overlap protection  UBA2081:  Outputs in phase with CLK input  Adjustable dead-time  Low active shutdown input 3. Applications  Driver (via external MOSFETs) for any kind of load in a half-bridge configuration  UBA2080A:  Selectable between UBA2080 and UBA2081 functionality  Thermally enhanced package for high frequency operation. 4. Ordering information Table 1. Ordering information Type number Package Name Description UBA2080P DIP8 plastic dual in-line package; 8 leads UBA2081P UBA2080T SO8 plastic small outline package; 8 leads UBA2081T UBA2080AT SO14 plastic small outline package; 14 leads Version SOT97-1 SOT96-1 SOT108-1 NXP Semiconductors 5. Block diagram UBA2080; UBA2080A; UBA2081 Half-bridge driver IC FS VDD ULVO ULVO R1 R2 S HS DRIVER GH HIN LOGIC LEVEL SHIFTER SH LIN LS DRIVER GL OVERLAP PROTECTION GND SEL Fig 1. Block diagram (UBA2080 and UBA2080A with select = GND) aaa-001102 FS VDD ULVO ULVO R1 R2 S HS DRIVER GH CLK LOGIC LEVEL SHIFTER SH SD Vref NON-OVERLAP LS DRIVER GL GND SEL aaa-001107 Fig 2. Block diagram (UBA2080A and UBA2081 with select = VDD) Refer to Figure 7 and Figure 8 for detailed information on the required application components. UBA2080_UBA2081 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 3 — 18 June 2012 © NXP B.V. 2012. All rights reserved. 2 of 15 NXP Semiconductors 6. Pinning information 6.1 Pinning UBA2080; UBA2080A; UBA2081 Half-bridge driver IC VDD 1 GND 2 LIN 3 HIN 4 8 GL UBA2080 7 SH 6 GH 5 FS aaa-001121 Fig 3. UBA2080: Pin configuration DIP8 and SO8 package GND 1 GND 2 SD/LIN 3 GND 4 CLK/HIN 5 FS 6 GH 7 14 SEL 13 GND 12 VDD UBA2080A 11 GL 10 GND 9 GND 8 SH aaa-001134 Fig 4. UBA2080A: Pin configuration SO14 package VDD 1 GND 2 SD 3 CLK 4 8 GL UBA2081 7 SH 6 GH 5 FS aaa-001126 Fig 5. UBA2081: Pin configuration DIP8 and SO8 package 6.2 Pin description Table 2. Symbol VDD GND LIN SD HIN CLK FS GH SH GL Pin description UBA2080/UBA2081 DIP8 and SO8 Pin Description UBA2080 UBA2081 (DIP8/SO8) (DIP8/SO8) 1 IC supply 2 IC ground and low-side driver return 3- low-side driver logic input - 3 low active analog shutdown input and non-overlap time setting 4- high-side driver logic input - 4 clock logic input 5 floating supply voltage 6 high-side MOSFET gate 7 high-side MOSFET source 8 low-side MOSFET gate Table 3. Symbol GND SD/LIN CLK/HIN FS SH Pin description UBA2080AT (SO14) Pin Description 1, 2, 4, 9, 10, 13 IC ground and low side driver return 3 low-side driver logic input or low active shutdown and non-overlap time setting 5 high-side driver logic input or clock logic input 6 floating supply voltage 8 high-side MOSFET source UBA2080_UBA2081 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 3 — 18 June 2012 © NXP B.V. 2012. All rights reserved. 3 of 15 NXP Semiconductors UBA2080; UBA2080A; UBA2081 Half-bridge driver IC Table 3. Symbol GH GL VDD SEL Pin description UBA2080AT (SO14) …continued Pin Description 7 high-side MOSFET gate 11 low-side MOSFET gate 12 IC supply 14 select UBA2080 or UBA2081 functionality; only connect to GND or VDD 7. Functional description 7.1 Start-up state The IC enters the start-up state when the supply voltage on pin VDD increases. In the start-up state, the high-side power transistor is non-conducting and the low-side power transistor is switched on. The internal circuit is reset and the capacitor on the bootstrap pin FS is charged. The start-up state is defined until the value of VDD = the VDD(start) value. After which the IC switches to the oscillation state. The circuit enters the start-up state again when the voltage on pin VDD < VDD(stop). 7.2 UBA2080 oscillation state In the oscillation state, the output voltage of the GL and GH drivers depend on the logical signals HIN and LIN (see Table 4). To prevent cross conduction in the half-bridge MOSFETs, the combination HIN = LIN = 1 is not allowed. Both GL and GH are LOW under this condition. Table 4. UBA2080 Logic table State HIN Start-up - Oscillation 0 Oscillation 0 Oscillation 1 Oscillation 1 LIN GH - LOW 0 LOW 1 LOW 0 HIGH 1 LOW GL HIGH LOW HIGH LOW LOW 7.3 UBA2081 oscillation state In the oscillation state, the output voltage of the GL and GH drivers depend on the logical signals CLK and SD (see Table 5). Table 5. .


UBA2080A UBA2081 C1618


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