Specifications
| Type | Description |
|---|---|
| Part Number | UCC21520 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package / Case | DW 16-pin SOIC, 10.30 mm x 7.50 mm nominal body size |
| Peak source output current | 4 A; output driver capability |
| Peak sink output current | 6 A; output driver capability |
| Isolation rating | 5.7 kVRMS; reinforced isolation barrier, UL 1577 for 1 minute |
| Maximum switching frequency | Up to 5 MHz; designed to drive MOSFETs, IGBTs, and SiC MOSFETs |
| Typical propagation delay | 33 ns; switching parameter |
| Minimum pulse width | 20 ns; switching parameter |
| Maximum pulse-width distortion | 6 ns; switching parameter |
| Common-mode transient immunity | >125 V/ns; minimum CMTI |
| Surge immunity | Up to 10 kV; isolation surge immunity |
| Input supply voltage range | 3 V to 18 V; VCCI operating range |
| Output drive supply voltage | Up to 25 V; VDD output drive supply |
| Driver configuration modes | Two low-side drivers, two high-side drivers, or half-bridge driver; programmable dead time available |
| Channel-to-channel working voltage | Up to 1500 VDC; between secondary-side drivers via internal functional isolation |
| Junction temperature range | -40°C to +150°C; operating junction temperature |
| VCCI absolute maximum voltage | -0.3 V to 20 V; input bias pin supply voltage VCCI to GND |
| Driver bias supply absolute maximum | -0.3 V to 30 V; VDDA-VSSA, VDDB-VSSB |
| Output signal voltage absolute maximum | -0.3 V to VDDA/B + 0.3 V; OUTA to VSSA, OUTB to VSSB |
| Output transient voltage absolute maximum | -2 V to VDDA/B + 0.3 V; OUTA to VSSA, OUTB to VSSB, transient for 200 ns |
| Input signal voltage absolute maximum | -0.3 V to VCCI + 0.3 V; INA, INB, DIS, DT to GND |
| Input transient voltage absolute maximum | -5 V to VCCI + 0.3 V; INA, INB transient for 50 ns |
| Channel-to-channel voltage absolute maximum | 1500 V; VSSA-VSSB, VSSB-VSSA |
| Storage temperature range | -65°C to +150°C; Tstg |
| HBM ESD rating | ±2000 V; ANSI/ESDA/JEDEC JS-001 |
| CDM ESD rating | ±1000 V; JEDEC JESD22-C101 |
| Recommended VCCI input supply voltage | 3 V to 18 V; over operating free-air temperature range |
| Recommended VDDA/VDDB supply voltage, UCC21520A | 6.5 V to 25 V; 5-V UVLO version |
| Recommended VDDA/VDDB supply voltage, UCC21520 | 9.2 V to 25 V; 8-V UVLO version |
| Junction-to-ambient thermal resistance | 69.8 °C/W; DW-16 SOIC package |
| Maximum total power dissipation | 950 mW; both sides |
| External clearance | >8 mm; shortest terminal-to-terminal distance through air |
| External creepage | >8 mm; shortest terminal-to-terminal distance across package surface |
| Comparative tracking index | >600 V; DIN EN 60112 / IEC 60112 |
| Maximum repetitive peak isolation voltage | 2121 VPK; AC voltage bipolar, DIN EN IEC 60747-17 |
| Maximum isolation working voltage | 1500 VRMS / 2121 VDC; AC sine wave TDDB test / DC voltage |
| Maximum impulse voltage | 7692 VPK; tested in air, 1.2/50-us waveform per IEC 62368-1 |
| Maximum transient isolation voltage | 8000 VPK; VIOTM qualification and production test |
| Maximum surge isolation voltage | 10000 VPK; tested in oil, 1.2/50-us waveform per IEC 62368-1 |
| Datasheet Status | request_only |
Product Overview
The UCC21520 is a Texas Instruments isolated dual-channel gate driver for Power_Management designs using MOSFETs, IGBTs, and SiC MOSFETs. The driver supports two low-side drivers, two high-side drivers, or a half-bridge driver configuration, with programmable dead time available.
Output drive capability is specified at 4 A peak source current and 6 A peak sink current. Switching-related parameters include operation up to 5 MHz, 33 ns typical propagation delay, 20 ns minimum pulse width, and 6 ns maximum pulse-width distortion. Minimum common-mode transient immunity is specified above 125 V/ns.
The device uses a reinforced isolation barrier rated at 5.7 kVRMS for 1 minute under UL 1577, with surge immunity up to 10 kV. The secondary-side drivers support up to 1500 VDC channel-to-channel working voltage through internal functional isolation.
UCC21520 is supplied in a DW 16-pin SOIC package with 10.30 mm x 7.50 mm nominal body size. Recommended supplies include 3 V to 18 V VCCI and 9.2 V to 25 V VDDA/VDDB for the UCC21520 8-V UVLO version.
Key Features
- 4 A peak source output current
- 6 A peak sink output current
- 5.7 kVRMS reinforced isolation barrier
- Switching frequency up to 5 MHz
- 33 ns typical propagation delay
- 20 ns minimum pulse width
- 6 ns maximum pulse-width distortion
- Minimum CMTI greater than 125 V/ns
- 3 V to 18 V VCCI input supply
- Up to 25 V output drive supply
- 1500 VDC channel-to-channel working voltage
- -40°C to +150°C junction temperature range
Typical Applications
- MOSFET gate drive circuits
- IGBT gate drive circuits
- SiC MOSFET gate drive circuits
- Half-bridge driver configurations
- Dual low-side driver configurations
- Dual high-side driver configurations
- Reinforced-isolation power stages
- High-CMTI switching power designs
Procurement Notes
When requesting a quote for UCC21520, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
What output current capability does the UCC21520 provide?
The UCC21520 provides 4 A peak source output current and 6 A peak sink output current. These values describe the output driver capability for driving MOSFETs, IGBTs, and SiC MOSFETs.
What isolation rating is specified for the UCC21520?
The device has a 5.7 kVRMS reinforced isolation barrier rated under UL 1577 for 1 minute. The extracted isolation data also lists surge immunity up to 10 kV and maximum surge isolation voltage of 10000 VPK.
Which driver configurations does the UCC21520 support?
The UCC21520 can be configured as two low-side drivers, two high-side drivers, or a half-bridge driver. Programmable dead time is available for configuration control.
What supply voltage ranges apply to UCC21520 operation?
The recommended VCCI input supply range is 3 V to 18 V. For the UCC21520 8-V UVLO version, the recommended VDDA and VDDB supply range is 9.2 V to 25 V.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.