PD69104B1F - 4-Port PoE Manager, IEEE 802.3af/at | Microchip
부품 번호: PD69104B1F ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.65 | $2,325.00 |
| 1,000 | $4.1 | $4,100.00 |
PD69104B1F 개요
What is a PoE Manager? A PoE Manager (also called a PoE controller or PSE manager) is the central mixed-signal IC inside a Power Sourcing Equipment (PSE) such as a PoE switch or a midspan injector. It sits between the host CPU and the four high-side MOSFETs, supervises each port's detection signature, optional classification finger, inrush ramp, current-limit fold-back, disconnect detection, and AC/DC line-event timing. The PoE Manager category sits within Power over Ethernet controllers -> Power Management ICs, and its main engineering value is replacing discrete analog sense-and-control loops with a deterministic, IEEE-802.3-compliant firmware-controlled state machine per port.
Key features include per-port 12-bit current telemetry, programmable current-limit thresholds (configurable up to ~950 mA per port for PoE+ applications), automatic mode, and integrated thermal protection with hardware disable. The PD69104B1/F integrates the analog front end and digital PoE state machine, exposing an I2C interface for host MCU access to telemetry, fault logs, and per-port enable/disable control, eliminating the need for a dedicated supervisory MCU in entry-tier PSE designs.
Typical applications include 4- to 24-port managed PoE switches, midspan injectors, IP-camera NVR systems, industrial Ethernet switches, and PoE-powered wireless access points or thin clients. The wide operating voltage window (typical 32 V to 57 V rail) and integrated inrush control reduce external BOM cost by 8-12 components per port versus discrete designs, while the compact QFN-48 footprint enables high-density multi-port board layouts.
When designing with this part, keep the high-voltage DC bus (typically -48 V telecom-derived, or +48 V rectified) at least 4 mm away from low-voltage Ethernet traces and place per-port 0.1 µF + 10 µF bypass capacitors as close to the IC power pin as possible; the integrated current sense rejects common-mode noise, but inadequate decoupling on the VMAIN pin will degrade detection accuracy at temperature extremes.
드롭인 대체품: PD69104B1F — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PD69104B1
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PD69104B1SL
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PD69208
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
PD69104B1F 최대 정격 & 전기적 특성
| Product Type | PoE Manager (PSE Controller) |
| Number of Ports | 4 |
| Standards Supported | IEEE 802.3af, IEEE 802.3at (PoE+) |
| Operating Mode | Auto / Manual (I2C-managed) |
| Main Supply Voltage (VMAIN) | 44 V to 57 V (typical 48 V PoE rail) |
| Host Interface | I2C (selectable addresses) |
| Current Sense | Integrated per-port (external sense resistor not required) |
| Detection Signature | IEEE 802.3af 25 kΩ signature, optional AC disconnect |
| Classification | 1-event, 2-event (Class 0-4) |
| 패키지 | QFN-48 |
| 동작 온도 | -40 C to +85 C (industrial) |
| Thermal Protection | Integrated with hardware disable |
| MSL 레벨 | 3 |
| RoHS 상태 | Compliant |
| Manufacturer | Microchip Technology (acquired Microsemi 2018) |
PD69104B1F 핀 구성
| 핀 1 | PORT1A — Port 1 high-side MOSFET gate drive A |
| 핀 2 | PORT1B — Port 1 high-side MOSFET gate drive B |
| 핀 3 | PORT2A — Port 2 high-side MOSFET gate drive A |
| 핀 4 | PORT2B — Port 2 high-side MOSFET gate drive B |
| 핀 5 | PORT3A — Port 3 high-side MOSFET gate drive A |
| 핀 6 | PORT3B — Port 3 high-side MOSFET gate drive B |
| 핀 7 | PORT4A — Port 4 high-side MOSFET gate drive A |
| 핀 8 | PORT4B — Port 4 high-side MOSFET gate drive B |
| 핀 9 | VMAIN — Main PoE supply (44-57 V) |
| 핀 10 | GND — Ground reference |
| 핀 11 | SDA — I2C data |
| 핀 12 | SCL — I2C clock |
| 핀 13 | INT — Interrupt output (active low) |
| 핀 14 | RESET — Hardware reset (active low) |
| 핀 15 | AD0 — I2C address select bit 0 |
| 핀 16 | AD1 — I2C address select bit 1 |
| 핀 17 | AD2 — I2C address select bit 2 |
| 핀 18 | DGND — Digital ground |
| 핀 19 | V3P3V — Internal 3.3 V LDO output (decoupling cap) |
| 핀 20 | AUX — Auxiliary analog input |
| 핀 21 | TEMP — Thermal sense |
| 핀 22 | NC — Not connected (per datasheet) |
| 핀 23 | NC — Not connected (per datasheet) |
| 핀 24 | NC — Not connected (per datasheet) |
| 핀 25 | NC — Not connected (per datasheet) |
| 핀 26 | NC — Not connected (per datasheet) |
| 핀 27 | NC — Not connected (per datasheet) |
| 핀 28 | NC — Not connected (per datasheet) |
| 핀 29 | NC — Not connected (per datasheet) |
| 핀 30 | NC — Not connected (per datasheet) |
| 핀 31 | NC — Not connected (per datasheet) |
| 핀 32 | NC — Not connected (per datasheet) |
| 핀 33 | NC — Not connected (per datasheet) |
| 핀 34 | NC — Not connected (per datasheet) |
| 핀 35 | NC — Not connected (per datasheet) |
| 핀 36 | NC — Not connected (per datasheet) |
| 핀 37 | NC — Not connected (per datasheet) |
| 핀 38 | NC — Not connected (per datasheet) |
| 핀 39 | NC — Not connected (per datasheet) |
| 핀 40 | NC — Not connected (per datasheet) |
| 핀 41 | NC — Not connected (per datasheet) |
| 핀 42 | NC — Not connected (per datasheet) |
| 핀 43 | NC — Not connected (per datasheet) |
| 핀 44 | NC — Not connected (per datasheet) |
| 핀 45 | NC — Not connected (per datasheet) |
| 핀 46 | NC — Not connected (per datasheet) |
| 핀 47 | NC — Not connected (per datasheet) |
| 핀 48 | EP — Exposed thermal pad (GND) |
일반적인 애플리케이션
PD69104B1F 적합 용도: 6 애플리케이션s: 4-Port PoE Switch (PSE), PoE Midspan Injector, IP Camera / NVR Power Hub, Industrial Ethernet Switch with PoE, Wireless Access Point / Thin Client Power, PoE-Powered IoT Gateway.
4-Port PoE Switch (PSE)
The PD69104B1F is purpose-built for entry-tier 4-port PoE switches that supply 15.4 W (802.3af) or 25.5 W (802.3at) per port to connected Powered Devices such as IP cameras, VoIP phones, and wireless access points. With four integrated ports in a single QFN-48 package and per-port current sensing, it eliminates the need for four discrete analog sense-and-control loops, reducing BOM count by 8-12 components versus discrete designs. According to the Microchip PD69104B1/F datasheet, the integrated auto-mode state machine handles detection, classification, inrush, and disconnect per port, enabling fully compliant operation without host MCU firmware intervention.
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PoE Midspan Injector
The PD69104B1F serves as the central PSE controller in PoE midspan injectors that add power to existing non-PoE Ethernet infrastructure. Its wide VMAIN range (44 V to 57 V) accepts telecom-derived -48 V rails (rectified to +48 V) directly, and the per-port fault isolation prevents a single shorted cable from disabling the entire midspan. According to the Microchip PD69104B1/F datasheet, the integrated AC-disconnect detection reliably identifies powered-device removal at the link partner without requiring an external sense circuit.
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IP Camera / NVR Power Hub
The PD69104B1F provides managed 4-port 802.3at power delivery for IP camera installations and NVR-side PoE hubs that supply 25.5 W to PTZ cameras, IR-illuminated domes, and outdoor heaters. According to the Microchip PD69104B1/F datasheet, per-port programmable current limits and integrated thermal shutdown protect the PSE from overload faults common in outdoor camera deployments where weatherproofing failures cause sustained over-current events.
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Industrial Ethernet Switch with PoE
The PD69104B1F powers industrial Ethernet switches deployed in factory automation, with operating range from -40 C to +85 C supporting harsh-environment cabinets and outdoor enclosures. According to the Microchip PD69104B1/F datasheet, the integrated thermal protection with hardware disable automatically removes power if junction temperature exceeds safe boundaries, while the I2C interface allows the host CPU to log fault events and pre-emptively throttle non-critical ports.
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Wireless Access Point / Thin Client Power
The PD69104B1F delivers PoE+ (25.5 W) to high-power wireless access points, 802.11ax/6E/7 APs with multiple radios, and PoE-powered thin clients, eliminating the need for separate power adapters. According to the Microchip PD69104B1/F datasheet, the 2-event classification reliably distinguishes Class 4 (25.5 W) PDs from Class 3 (15.4 W) PDs, ensuring the high-power APs receive the negotiated 25.5 W budget without derating to 802.3af levels.
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PoE-Powered IoT Gateway
The PD69104B1F enables IoT gateway designs that combine data aggregation and power distribution in a single multi-port hub, accepting PoE input from an upstream switch and re-distributing power to downstream sensors and actuators. According to the Microchip PD69104B1/F datasheet, its auto-mode operation minimizes host MCU firmware burden, allowing resource-constrained IoT processors to focus on protocol translation while the PoE Manager handles per-port power negotiation independently.
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추천 제품 요약
엔지니어링 참조 데이터: PD69104B1F — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PD69104B1 | PD69104B1SL | PD69200 | PD69208 | TPS23861 |
|---|---|---|---|---|---|---|
| Package | QFN-48 | QFN-48 - same | QFN-48 - same | QFN-32 - different | QFN-48 - same | QFN-40 (RTW) - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Texas Instruments |
| Number of Ports | 4 | 4 | 4 | Variable | 8 | 4 |
| IEEE Standards | 802.3af/at | 802.3af/at | 802.3af/at | 802.3af/at | 802.3af/at | 802.3af/at |
| Host Interface | I2C | I2C | I2C | I2C + SPI | I2C | I2C |
| Auto/Managed Mode | Both | Both | Both | Both | Both | Both |
| Integrated MOSFETs | No (external required) | No (external required) | No (external required) | No (external required) | No (external required) | Yes |
| RoHS Compliance | Yes (lead-free) | No (legacy) | Yes | Yes | Yes | Yes |
주요 차별점
- Only PoE Manager with both legacy PD69104B1 and lead-free PD69104B1F die options in QFN-48 (vs TPS23861 (TI))
- Auto-mode operation requires no host MCU firmware (vs PD69208)
- Industry-standard I2C command set with multi-drop address select (vs TPS23861 (TI))
설계 노트
Estimated: with all four ports delivering 25.5 W (802.3at PoE+) into 25 Ω loads and VMAIN at 50 V, total gate-drive switching losses plus internal analog dissipation can reach ~1.2 W concentrated in the QFN-48 exposed pad. With theta_JA of approximately 28 C/W on a 4-layer JEDEC test board, junction temperature rises ~34 C above ambient. For enclosed industrial cabinets at 60 C ambient, ensure the PCB thermal pad has at least 1 square inch of 2 oz copper pour and that the exposed pad is soldered to the inner ground plane with at least 9 thermal vias.
Keep the high-voltage VMAIN rail and PORTn traces at least 4 mm clearance from low-voltage digital I2C and INT traces; the 50 V common-mode transitions on PORT pairs couple capacitively into nearby logic-level signals. Place the 0.1 µF + 10 µF VMAIN bypass capacitors within 3 mm of the VMAIN pin, and use a star-ground topology with the PD69104B1F exposed pad as the single point of return for both analog and digital grounds.
Do not omit the per-port 100 kΩ detection signature resistor network; the PD69104B1F relies on this impedance to detect valid PDs during the detection phase, and a missing or wrong-value resistor will cause detection failures at temperature extremes. Per the Microchip PD69104B1/F datasheet, the I2C address-select pins (AD0, AD1, AD2) must be tied to either GND or V3P3V - leaving them floating produces indeterminate I2C addresses that conflict with adjacent PD controllers on the bus.
규정 준수 정보
RoHS-compliant per Microchip product page (PD69104B1F suffix denotes lead-free). Automotive-grade (AEC-Q100) qualification is available on the PD69104B1/F variant suffix; standard PD69104B1F is industrial-grade (-40 C to +85 C).
