MC33937APEK - 3-Phase FET Pre-Driver, 1.5A, 40V, SPI | NXP
部品番号: MC33937APEK ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $6.96 | $6.96 |
| 10 | $6.27 | $62.70 |
| 100 | $5.4 | $540.00 |
| 500 | $4.62 | $2,310.00 |
| 1,000 | $3.78 | $3,780.00 |
MC33937APEK 概要
A Field Effect Transistor pre-driver is an interface IC that sits between a low-power microcontroller and high-current power switches; the pre-driver level-shifts logic-level PWM signals to the high-voltage, high-current gate-drive rails required to switch the power stage efficiently. In the system hierarchy it belongs to motor drivers -> gate drivers -> power management ICs -> mixed-signal semiconductors. The MC33937 family is purpose-built for automotive ECUs such as electric power steering, water/oil pumps, and HVAC blowers.
Key features include three high-side and three low-side gate-drive outputs with programmable dead-time insertion to prevent shoot-through, integrated VLS and VLS_CAP charge-pump-generated gate supply rails that hold the high-side drivers above the phase node, programmable desaturation (VDS) short-circuit detection on each phase, and configurable over-current shutdown. The wide 6 V to 40 V (load-dump tolerant on VPS) input range accommodates 12 V and 24 V automotive buses. The exposed pad of the SOIC-EP-54 package provides a low thermal resistance path, and SPI-accessible registers let designers tune dead-time, blanking time, fault thresholds, and reset behavior from firmware.
Typical applications include automotive 12 V three-phase brushless DC motor drives, electric water and oil pumps, electric power steering (EPS) auxiliary drives, HVAC blower controllers, and industrial three-phase motor pre-driver stages where galvanic isolation between control and power domain is not required. The integrated protection features reduce external component count and PCB area versus discrete gate-drive designs, which is critical under-the-hood where space and reliability are paramount.
When designing with this part, keep decoupling capacitors close to VDD, VLS, and VLS_CAP pins and follow the datasheet PCB layout guidelines to keep the high-current gate-drive loops short. SPI clock speed and CS timing must comply with the timing table in the datasheet.
This page synthesizes distributor pricing, drop-in compatible alternatives, SPI register notes, and practical design tips that go beyond the manufacturer datasheet.
ドロップイン代替品: MC33937APEK — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: MC33937APEK （同一形状・フットプリント） — 相違点: Charge Pump, Package.
クイック比較ツール — 並列比較する代替部品を選択:
MC33937APEFR2
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC33937AEF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC33937TEF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC33937AEF-R2
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC33937PEF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC33937APEK 最大定格＆電気的特性
| Product Type | 3-phase FET pre-driver (gate driver) |
| 出力数 | 6 (3 high-side + 3 low-side) |
| Supply Voltage (Vdd) | 5 V typical logic supply |
| Battery / VPS Voltage Range | 6 V to 40 V (load-dump tolerant) |
| Gate Drive Current | greater than 1.5 A peak |
| インターフェース | SPI (Serial Peripheral Interface) |
| Integrated Protections | FET short-circuit / desaturation, over-current, undervoltage |
| 出力構成 | Three half-bridge gate drivers for external N-channel MOSFETs |
| Dead-Time Control | Programmable via SPI |
| Charge Pump | Integrated for high-side gate supply (VLS, VLS_CAP) |
| 動作温度範囲 | -40 C to +125 C |
| パッケージ | 54-pin SOIC-EP (exposed pad) |
| 実装タイプ | Surface Mount |
| Technology | SMARTMOS mixed-signal |
| Automotive Qualification | AEC-Q100 qualified (per NXP product family page) |
MC33937APEK 54-pin soic-ep (exposed pad) ピン配置ガイド
MC33937APEK (54-pin soic-ep (exposed pad) パッケージ) のピン配置。 このパワーデバイスは、ゲート、ドレイン、ソース端子を備えています。非極性パッケージの場合、正確なピン1の向きとフットプリントの詳細については、メーカーのデータシートを参照してください。主な用途には、電源設計、モータ駆動、負荷スイッチングがあります。
詳細なピン配置データはありません: MC33937APEK.
詳細は データシート をご参照ください。
主な用途
MC33937APEK の用途: 6 件s: Automotive 12V BLDC Water / Oil Pump, Electric Power Steering (EPS) Auxiliary Drive, HVAC Blower Motor Controller, Industrial 24V Three-Phase Motor Pre-Driver Stage, Battery-Powered Cordless Power Tool Motor Drive, Three-Phase PFC / Inverter Pre-Driver.
Automotive 12V BLDC Water / Oil Pump
The MC33937APEK is purpose-built for automotive 12 V BLDC water and oil pumps where reliability under load-dump transients is critical. Its >1.5 A gate-drive current switches the external N-channel MOSFETs at PWM frequencies up to the SPI-configured limit, and the integrated VDS desaturation short-circuit detection protects the pump windings from a stuck-rotor event. With VPS rated to 40 V and AEC-Q100 qualification to 125 C, the device survives under-hood temperatures and inductive kick-back. Designers typically place the pre-driver between the MCU and a three-phase bridge of 30 V / 60 V MOSFETs, sized for 10-30 A continuous. The 54-pin SOIC-EP package's exposed pad must be soldered to a copper pour to keep junction rise under 1.5 W gate-drive dissipation.
おすすめ
Electric Power Steering (EPS) Auxiliary Drive
EPS auxiliary motors require a hardened three-phase pre-driver that can survive reverse-battery and load-dump events while delivering clean PWM to the bridge. The MC33937APEK's 40 V VPS tolerance and integrated over-current shutdown suit EPS sub-systems such as column adjustment or variable-ratio drives. The SPI interface lets the EPS MCU reconfigure dead-time and fault blanking on the fly to match temperature and battery voltage. A typical circuit places the part between an ASIL-rated MCU and a 40 V MOSFET half-bridge, with the SOIC-EP exposed pad tied to a large ground pour for thermal relief under continuous torque demand.
おすすめ
HVAC Blower Motor Controller
HVAC blower modules in modern vehicles demand quiet, efficient variable-speed BLDC control. The MC33937APEK's configurable dead-time and programmable desaturation blanking time let designers tune acoustic performance (low switching losses, smooth commutation) while still protecting the power MOSFETs from shoot-through. Operating from a 12 V battery with 40 V transient tolerance, it pairs naturally with 30 V/40 V N-channel MOSFETs in the blower stage. Designers add a small heatsink or copper pour under the SOIC-EP pad to dissipate the 1-2 W typical gate-drive loss at 20 kHz PWM.
おすすめ
Industrial 24V Three-Phase Motor Pre-Driver Stage
Industrial servo and pump drives on 24 V buses use the MC33937APEK as a pre-driver between an industrial MCU (such as a Kinetis or STM32) and a three-phase IGBT or MOSFET bridge. The 40 V VPS rating gives sufficient headroom above the nominal 24 V bus plus reverse-polarity and inductive transients. The SPI registers let designers program dead-time precisely to the IGBT's turn-off delay, minimizing losses. The exposed pad of the SOIC-EP-54 provides low theta-JA, important in enclosed industrial cabinets where ambient is high.
おすすめ
Battery-Powered Cordless Power Tool Motor Drive
High-power cordless tools that use 18 V to 36 V battery packs need a robust three-phase FET pre-driver; the MC33937APEK's 40 V VPS tolerance accommodates the inductive transients generated when the motor is braked or reversed. The >1.5 A gate drive can switch large TO-220 or DFN MOSFETs at high PWM frequency, allowing compact tool designs. SPI access to fault registers supports tool diagnostics (over-current, short-circuit). The SOIC-EP package keeps the board height low for in-handle placement.
おすすめ
Three-Phase PFC / Inverter Pre-Driver
For three-phase power-factor correction or solar inverter front-ends that build on a low-voltage MCU, the MC33937APEK can pre-drive the IGBT bridge connected to the DC bus. The integrated charge pump (VLS/VLS_CAP) supplies the high-side gate drivers without external bootstrap diodes, simplifying the BOM. AEC-Q100 qualification indicates that even grid-tied industrial inverters in harsh environments benefit from the automotive-grade robustness. Designers must respect the 40 V VPS limit and add a pre-regulator when the DC bus exceeds this.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MC33937APEK — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | MC33937APEFR2 | MC33937AEF | MC33937TEF | MC33937AEF-R2 | MC33937PEF |
|---|---|---|---|---|---|---|
| Package | 54-pin SOIC-EP | 54-pin SOIC-EP - same | 54-pin SOIC-EP - same | 54-pin SOIC-EP - same | 54-pin SOIC-EP - same | 54-pin SOIC-EP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Output Configuration | 3-phase, 6 outputs (HS+LS) | 3-phase, 6 outputs (HS+LS) | 3-phase, 6 outputs (HS+LS) | 3-phase, 6 outputs (HS+LS) | 3-phase, 6 outputs (HS+LS) | 3-phase, 6 outputs (HS+LS) |
| Gate Drive Current | greater than 1.5 A | greater than 1.5 A | greater than 1.5 A | greater than 1.5 A | greater than 1.5 A | greater than 1.5 A |
| VPS Battery Voltage | 6 V to 40 V | 6 V to 40 V | 6 V to 40 V | 6 V to 40 V | 6 V to 40 V | 6 V to 40 V |
| Interface | SPI | SPI | SPI | SPI | SPI | SPI |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C |
| Shipping Format | Tape & Reel (APEK) | Reel R2 | Tube (AEF) | Tube (TEF) | Reel R2 | Tube (PEF) |
主な差別化要因
- Integrated charge pump for high-side gate supply （vs MC33939)
- Greater than 1.5 A peak gate drive （vs IRS2334 (28-SOIC, 0.2 A peak))
- SPI-configurable fault and timing thresholds （vs Fixed-threshold gate drivers)
設計ノート
Estimated: PCB layout for the MC33937APEK should place a 0.47 uF ceramic decoupling capacitor on VDD, a 2.2 uF on VLS, and a 2.2 uF on VLS_CAP as close as possible to the respective pins (within 2-3 mm). The SOIC-EP exposed pad must be soldered to a continuous copper pour - at least 1 square inch of 2 oz copper - to keep theta-JA low and dissipate the gate-drive losses. Keep the high-current gate-drive loops (gate-source of the driven MOSFET) short to minimize parasitic inductance that otherwise causes ringing and possible shoot-through.
Estimated: at 20 kHz PWM into a MOSFET with 50 nC Qg, the gate-drive loss per channel is roughly VLS x Qg x fsw = 12 V x 50 nC x 20 kHz = 12 mW per channel, or 72 mW total for six channels. With reasonable PCB layout (1 sq inch copper pour) this is well within the SOIC-EP's thermal envelope. As the switching frequency rises above 50 kHz or the MOSFET Qg exceeds 100 nC, evaluate additional heatsinking or copper area.
Avoid hot-plugging the VPS battery supply to a powered-down MC33937APEK; always allow the VDD logic supply to be present before VPS exceeds 6 V to enter normal regulation. Configure the dead-time, blanking time, and fault masks via SPI before enabling any gate drive output. Per NXP datasheet, the integrated charge pump needs the values stated above for VDD, VLS, and VLS_CAP to guarantee start-up - deviations can prevent the high-side outputs from turning on cleanly.
コンプライアンス情報
AEC-Q100 qualification per NXP MC33937 family documentation. RoHS/REACH status was not confirmed in the verified web data; verify on the manufacturer PCN before committing to production. Lead-free process per NXP SMARTMOS family standards. Conflict-minerals compliance per NXP corporate policy.
